From c3dad6309a19cad057067deb635c3a035ac1173a Mon Sep 17 00:00:00 2001
From: Adam <adam@desktop>
Date: Sat, 2 Dec 2023 11:31:29 +1100
Subject: [PATCH] Initial SDK implementation

---
 Cargo.toml                   |   8 +-
 LICENSE copy                 | 201 -----------------------------------
 README.md                    |  33 ++++--
 src/client/accounts.rs       |  87 +++++++++++++++
 src/client/addresses.rs      | 111 +++++++++++++++++++
 src/client/asset.rs          |  83 +++++++++++++++
 src/client/asset_policy.rs   |  71 +++++++++++++
 src/client/block_info.rs     |  60 +++++++++++
 src/client/config.rs         |  23 ++++
 src/client/datum.rs          |  12 +++
 src/client/ecosystem.rs      |  13 +++
 src/client/epochs.rs         |  21 ++++
 src/client/general.rs        |  38 +++++++
 src/client/linear_vesting.rs |  52 +++++++++
 src/client/maestro.rs        |  76 +++++++++++++
 src/client/mod.rs            |  16 +++
 src/client/pools.rs          | 106 ++++++++++++++++++
 src/client/scripts.rs        |  14 +++
 src/client/transactions.rs   | 107 +++++++++++++++++++
 src/client/txmanager.rs      |  38 +++++++
 src/lib.rs                   |   4 +
 src/main.rs                  |   3 -
 src/models/accounts.rs       | 100 +++++++++++++++++
 src/models/addresses.rs      | 107 +++++++++++++++++++
 src/models/asset.rs          |  81 ++++++++++++++
 src/models/asset_policy.rs   |  85 +++++++++++++++
 src/models/common.rs         |   8 ++
 src/models/datum.rs          |  15 +++
 src/models/epochs.rs         |  17 +++
 src/models/general.rs        |  92 ++++++++++++++++
 src/models/linear_vesting.rs |  24 +++++
 src/models/mod.rs            |  13 +++
 src/models/pools.rs          | 144 +++++++++++++++++++++++++
 src/models/scripts.rs        |  23 ++++
 src/models/transactions.rs   |  96 +++++++++++++++++
 src/models/txmanager.rs      |   9 ++
 src/utils/last_updated.rs    |   8 ++
 src/utils/mod.rs             |   4 +
 src/utils/parameters.rs      |  67 ++++++++++++
 39 files changed, 1855 insertions(+), 215 deletions(-)
 delete mode 100644 LICENSE copy
 create mode 100644 src/client/accounts.rs
 create mode 100644 src/client/addresses.rs
 create mode 100644 src/client/asset.rs
 create mode 100644 src/client/asset_policy.rs
 create mode 100644 src/client/block_info.rs
 create mode 100644 src/client/config.rs
 create mode 100644 src/client/datum.rs
 create mode 100644 src/client/ecosystem.rs
 create mode 100644 src/client/epochs.rs
 create mode 100644 src/client/general.rs
 create mode 100644 src/client/linear_vesting.rs
 create mode 100644 src/client/maestro.rs
 create mode 100644 src/client/mod.rs
 create mode 100644 src/client/pools.rs
 create mode 100644 src/client/scripts.rs
 create mode 100644 src/client/transactions.rs
 create mode 100644 src/client/txmanager.rs
 create mode 100644 src/lib.rs
 delete mode 100644 src/main.rs
 create mode 100644 src/models/accounts.rs
 create mode 100644 src/models/addresses.rs
 create mode 100644 src/models/asset.rs
 create mode 100644 src/models/asset_policy.rs
 create mode 100644 src/models/common.rs
 create mode 100644 src/models/datum.rs
 create mode 100644 src/models/epochs.rs
 create mode 100644 src/models/general.rs
 create mode 100644 src/models/linear_vesting.rs
 create mode 100644 src/models/mod.rs
 create mode 100644 src/models/pools.rs
 create mode 100644 src/models/scripts.rs
 create mode 100644 src/models/transactions.rs
 create mode 100644 src/models/txmanager.rs
 create mode 100644 src/utils/last_updated.rs
 create mode 100644 src/utils/mod.rs
 create mode 100644 src/utils/parameters.rs

diff --git a/Cargo.toml b/Cargo.toml
index 55279dd..4187d27 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,8 +1,10 @@
 [package]
-name = "rust-sdk"
+name = "maestro"
 version = "0.1.0"
 edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+license = "Apache-2.0"
 
 [dependencies]
+reqwest = "0.11"
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
\ No newline at end of file
diff --git a/LICENSE copy b/LICENSE copy
deleted file mode 100644
index 339a45e..0000000
--- a/LICENSE copy	
+++ /dev/null
@@ -1,201 +0,0 @@
-                                 Apache License
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-                        http://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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-   5. Submission of Contributions. Unless You explicitly state otherwise,
-      any Contribution intentionally submitted for inclusion in the Work
-      by You to the Licensor shall be under the terms and conditions of
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-      Notwithstanding the above, nothing herein shall supersede or modify
-      the terms of any separate license agreement you may have executed
-      with Licensor regarding such Contributions.
-
-   6. Trademarks. This License does not grant permission to use the trade
-      names, trademarks, service marks, or product names of the Licensor,
-      except as required for reasonable and customary use in describing the
-      origin of the Work and reproducing the content of the NOTICE file.
-
-   7. Disclaimer of Warranty. Unless required by applicable law or
-      agreed to in writing, Licensor provides the Work (and each
-      Contributor provides its Contributions) on an "AS IS" BASIS,
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-      whether in tort (including negligence), contract, or otherwise,
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-      result of this License or out of the use or inability to use the
-      Work (including but not limited to damages for loss of goodwill,
-      work stoppage, computer failure or malfunction, or any and all
-      other commercial damages or losses), even if such Contributor
-      has been advised of the possibility of such damages.
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-      the Work or Derivative Works thereof, You may choose to offer,
-      and charge a fee for, acceptance of support, warranty, indemnity,
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-      on Your own behalf and on Your sole responsibility, not on behalf
-      of any other Contributor, and only if You agree to indemnify,
-      defend, and hold each Contributor harmless for any liability
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-      of your accepting any such warranty or additional liability.
-
-   END OF TERMS AND CONDITIONS
-
-   APPENDIX: How to apply the Apache License to your work.
-
-      To apply the Apache License to your work, attach the following
-      boilerplate notice, with the fields enclosed by brackets "[]"
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-   Copyright 2023 Maestro Blockchain Inc.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
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-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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diff --git a/README.md b/README.md
index fad096c..c59da98 100644
--- a/README.md
+++ b/README.md
@@ -31,9 +31,10 @@
 # Getting Started
 
 ## Prerequisites
-* [Rust](https://www.rust-lang.org/tools/install)
-* [Clippy](https://github.com/rust-lang/rust-clippy)
-* [Audit](https://docs.rs/cargo-audit/latest/cargo_audit/)
+
+- [Rust](https://www.rust-lang.org/tools/install)
+- [Clippy](https://github.com/rust-lang/rust-clippy)
+- [Audit](https://docs.rs/cargo-audit/latest/cargo_audit/)
 
 ## Installation
 
@@ -46,21 +47,37 @@
 ## Usage
 
 ```rust
-// TODO
+use maestro::Maestro;
+
+let maestro_client = Maestro::new("<PROJECT_API_KEY>", "<NETWORK>")
 ```
 
-* To generate an API key, create a free account [here](https://dashboard.gomaestro.org/)!
-* Network options: `mainnet`, `preprod`, `preview`
+- To generate an API key, create a free account [here](https://dashboard.gomaestro.org/)!
+- Network options: `mainnet`, `preprod`, `preview`
 
 ## Example
 
 ```rust
-// TODO
+use maestro::Maestro;
+
+#[tokio::main]
+async fn main() {
+    let maestro_client = Maestro::new(
+        String::from("<PROJECT_API_KEY>"),
+        String::from("<NETWORK>"),
+    );
+
+    match maestro_client.block_info(9005859).await {
+        Ok(block_info) => println!("{}", block_info.data.absolute_slot),
+        Err(e) => eprint!("Failed to retrieve block info {}", e),
+    }
+}
 ```
 
 # Documentation
 
-* [Maestro public docs](https://docs.gomaestro.org/)
+- [Maestro public docs](https://docs.gomaestro.org/)
 
 # Contributing
+
 Meastro welcomes all contributors! Please see our [contributing guidelines](CONTRIBUTING.md) and [code of conduct](CODE_OF_CONDUCT.md).
diff --git a/src/client/accounts.rs b/src/client/accounts.rs
new file mode 100644
index 0000000..91a65d0
--- /dev/null
+++ b/src/client/accounts.rs
@@ -0,0 +1,87 @@
+use super::maestro::Maestro;
+use crate::{
+    models::accounts::{
+        AccountAddresses, AccountAssets, StakeAccountHistory, StakeAccountInformation,
+        StakeAccountRewards, StakeAccountUpdates,
+    },
+    utils::Parameters,
+};
+use std::error::Error;
+
+impl Maestro {
+    pub async fn account_addresses(
+        &self,
+        stake_addr: &str,
+        params: Option<Parameters>,
+    ) -> Result<AccountAddresses, Box<dyn Error>> {
+        let formatted_params = params.map(|p| p.format()).unwrap_or_default();
+        let url = format!("/accounts/{}/addresses{}", stake_addr, formatted_params);
+        let resp = self.get(&url).await?;
+        let account_addresses =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(account_addresses)
+    }
+
+    pub async fn account_assets(
+        &self,
+        stake_addr: &str,
+        params: Option<Parameters>,
+    ) -> Result<AccountAssets, Box<dyn Error>> {
+        let formatted_params = params.map(|p| p.format()).unwrap_or_default();
+        let url = format!("/accounts/{}/assets{}", stake_addr, formatted_params);
+        let resp = self.get(&url).await?;
+        let account_assets =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(account_assets)
+    }
+
+    pub async fn stake_account_history(
+        &self,
+        stake_addr: &str,
+        params: Option<Parameters>,
+    ) -> Result<StakeAccountHistory, Box<dyn Error>> {
+        let formatted_params = params.map(|p| p.format()).unwrap_or_default();
+        let url = format!("/accounts/{}/history{}", stake_addr, formatted_params);
+        let resp = self.get(&url).await?;
+        let stake_account_history =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(stake_account_history)
+    }
+
+    pub async fn stake_account_information(
+        &self,
+        stake_addr: &str,
+    ) -> Result<StakeAccountInformation, Box<dyn Error>> {
+        let url = format!("/accounts/{}", stake_addr);
+        let resp = self.get(&url).await?;
+        let stake_account_information =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(stake_account_information)
+    }
+
+    pub async fn stake_account_rewards(
+        &self,
+        stake_addr: &str,
+        params: Option<Parameters>,
+    ) -> Result<StakeAccountRewards, Box<dyn Error>> {
+        let formatted_params = params.map(|p| p.format()).unwrap_or_default();
+        let url = format!("/accounts/{}/rewards{}", stake_addr, formatted_params);
+        let resp = self.get(&url).await?;
+        let stake_account_rewards =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(stake_account_rewards)
+    }
+
+    pub async fn stake_account_updates(
+        &self,
+        stake_addr: &str,
+        params: Option<Parameters>,
+    ) -> Result<StakeAccountUpdates, Box<dyn Error>> {
+        let formatted_params = params.map(|p| p.format()).unwrap_or_default();
+        let url = format!("/accounts/{}/updates{}", stake_addr, formatted_params);
+        let resp = self.get(&url).await?;
+        let stake_account_updates =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(stake_account_updates)
+    }
+}
diff --git a/src/client/addresses.rs b/src/client/addresses.rs
new file mode 100644
index 0000000..5cc5904
--- /dev/null
+++ b/src/client/addresses.rs
@@ -0,0 +1,111 @@
+use super::maestro::Maestro;
+use crate::{
+    models::addresses::{
+        AddressTransactionCount, AddressTransactions, DecodedAddress, UtxoReferencesAtAddress,
+        UtxosAtAddress,
+    },
+    utils,
+};
+use std::error::Error;
+
+impl Maestro {
+    pub async fn decode_address(&self, address: &str) -> Result<DecodedAddress, Box<dyn Error>> {
+        let url = format!("/addresses/{}/decode/", address);
+        let resp = self.get(&url).await?;
+        let decoded_address =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(decoded_address)
+    }
+
+    pub async fn address_transaction_count(
+        &self,
+        address: &str,
+    ) -> Result<AddressTransactionCount, Box<dyn Error>> {
+        let url = format!("/addresses/{}/transactions/count", address);
+        let resp = self.get(&url).await?;
+        let transaction_count =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(transaction_count)
+    }
+
+    pub async fn address_transactions(
+        &self,
+        address: &str,
+        params: Option<&utils::Parameters>,
+    ) -> Result<AddressTransactions, Box<dyn Error>> {
+        let formatted_params = params.map(|p| p.format()).unwrap_or_default();
+        let url = format!("/addresses/{}/transactions{}", address, formatted_params);
+        let resp = self.get(&url).await?;
+        let address_transactions =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(address_transactions)
+    }
+
+    pub async fn payment_credential_transactions(
+        &self,
+        payment_credential: &str,
+        params: Option<utils::Parameters>,
+    ) -> Result<AddressTransactions, Box<dyn Error>> {
+        let formatted_params = params.map(|p| p.format()).unwrap_or_default();
+        let url = format!(
+            "/addresses/cred/{}/transactions{}",
+            payment_credential, formatted_params
+        );
+        let resp = self.get(&url).await?;
+        let address_transactions =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(address_transactions)
+    }
+
+    pub async fn utxo_references_at_address(
+        &self,
+        address: &str,
+        params: Option<utils::Parameters>,
+    ) -> Result<UtxoReferencesAtAddress, Box<dyn Error>> {
+        let formatted_params = params.map(|p| p.format()).unwrap_or_default();
+        let url = format!("/addresses/{}/utxo_refs{}", address, formatted_params);
+        let resp = self.get(&url).await?;
+        let utxo_references =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(utxo_references)
+    }
+
+    pub async fn utxos_at_address(
+        &self,
+        address: &str,
+        params: Option<utils::Parameters>,
+    ) -> Result<UtxosAtAddress, Box<dyn Error>> {
+        let formatted_params = params.map(|p| p.format()).unwrap_or_default();
+        let url = format!("/addresses/{}/utxos{}", address, formatted_params);
+        let resp = self.get(&url).await?;
+        let utxos = serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(utxos)
+    }
+
+    pub async fn utxos_at_addresses(
+        &self,
+        addresses: Vec<String>,
+        params: Option<utils::Parameters>,
+    ) -> Result<UtxosAtAddress, Box<dyn Error>> {
+        let formatted_params = params.map(|p| p.format()).unwrap_or_default();
+        let url = format!("/addresses/utxos{}", formatted_params);
+        let resp = self.post(&url, addresses).await?;
+        let utxos = serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(utxos)
+    }
+
+    pub async fn utxos_by_payment_credential(
+        &self,
+        payment_credential: &str,
+        params: Option<utils::Parameters>,
+    ) -> Result<UtxosAtAddress, Box<dyn Error>> {
+        let formatted_params = params.map(|p| p.format()).unwrap_or_default();
+        let url = format!(
+            "/addresses/cred/{}/utxos{}",
+            payment_credential, formatted_params
+        );
+        let resp = self.get(&url).await?;
+        let utxos = serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(utxos)
+    }
+}
diff --git a/src/client/asset.rs b/src/client/asset.rs
new file mode 100644
index 0000000..4323c5c
--- /dev/null
+++ b/src/client/asset.rs
@@ -0,0 +1,83 @@
+use super::maestro::Maestro;
+use crate::{
+    models::asset::{
+        AccountsHoldingAsset, AddressesHoldingAsset, AssetInformations, AssetTransactions,
+        AssetUpdates, AssetUtxos,
+    },
+    utils::Parameters,
+};
+use std::error::Error;
+
+impl Maestro {
+    pub async fn accounts_holding_asset(
+        &self,
+        asset_id: &str,
+        params: Option<&Parameters>,
+    ) -> Result<AccountsHoldingAsset, Box<dyn Error>> {
+        let formatted_params = params.map_or_else(|| "".to_string(), |p| p.format());
+        let url = format!("/assets/{}/accounts{}", asset_id, formatted_params);
+        let resp = self.get(&url).await?;
+        let accounts_holding_asset =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(accounts_holding_asset)
+    }
+
+    pub async fn address_holding_asset(
+        &self,
+        asset_id: &str,
+        params: Option<&Parameters>,
+    ) -> Result<AddressesHoldingAsset, Box<dyn Error>> {
+        let formatted_params = params.map_or_else(|| "".to_string(), |p| p.format());
+        let url = format!("/assets/{}/addresses{}", asset_id, formatted_params);
+        let resp = self.get(&url).await?;
+        let addresses_holding_asset =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(addresses_holding_asset)
+    }
+
+    pub async fn asset(&self, asset_id: &str) -> Result<AssetInformations, Box<dyn Error>> {
+        let url = format!("/assets/{}", asset_id);
+        let resp = self.get(&url).await?;
+        let asset_information =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(asset_information)
+    }
+
+    pub async fn asset_transactions(
+        &self,
+        asset_id: &str,
+        params: Option<&Parameters>,
+    ) -> Result<AssetTransactions, Box<dyn Error>> {
+        let formatted_params = params.map_or_else(|| "".to_string(), |p| p.format());
+        let url = format!("/assets/{}/txs{}", asset_id, formatted_params);
+        let resp = self.get(&url).await?;
+        let asset_transactions =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(asset_transactions)
+    }
+
+    pub async fn asset_updates(
+        &self,
+        asset_id: &str,
+        params: Option<&Parameters>,
+    ) -> Result<AssetUpdates, Box<dyn Error>> {
+        let formatted_params = params.map_or_else(|| "".to_string(), |p| p.format());
+        let url = format!("/assets/{}/updates{}", asset_id, formatted_params);
+        let resp = self.get(&url).await?;
+        let asset_updates =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(asset_updates)
+    }
+
+    pub async fn asset_utxos(
+        &self,
+        asset_id: &str,
+        params: Option<&Parameters>,
+    ) -> Result<AssetUtxos, Box<dyn Error>> {
+        let formatted_params = params.map_or_else(|| "".to_string(), |p| p.format());
+        let url = format!("/assets/{}/utxos{}", asset_id, formatted_params);
+        let resp = self.get(&url).await?;
+        let asset_utxos = serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(asset_utxos)
+    }
+}
diff --git a/src/client/asset_policy.rs b/src/client/asset_policy.rs
new file mode 100644
index 0000000..2d6ddfc
--- /dev/null
+++ b/src/client/asset_policy.rs
@@ -0,0 +1,71 @@
+use super::maestro::Maestro;
+use crate::{
+    models::asset_policy::{
+        AccountsHoldingPolicy, AddressesHoldingPolicy, PolicyInformation, PolicyTransactions,
+        UtxosContainingPolicy,
+    },
+    utils,
+};
+use std::error::Error;
+
+impl Maestro {
+    pub async fn accounts_holding_policy(
+        &self,
+        policy: &str,
+        params: Option<utils::Parameters>,
+    ) -> Result<AccountsHoldingPolicy, Box<dyn Error>> {
+        let formatted_params = params.map(|p| p.format()).unwrap_or_default();
+        let url = format!("/assets/policy/{}/accounts?{}", policy, formatted_params);
+        let resp = self.get(&url).await?;
+        let response = serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(response)
+    }
+
+    pub async fn addresses_holding_policy(
+        &self,
+        policy: &str,
+        params: Option<utils::Parameters>,
+    ) -> Result<AddressesHoldingPolicy, Box<dyn Error>> {
+        let formatted_params = params.map(|p| p.format()).unwrap_or_default();
+        let url = format!("/assets/policy/{}/addresses?{}", policy, formatted_params);
+        let resp = self.get(&url).await?;
+        let response = serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(response)
+    }
+
+    pub async fn specific_policy_informations(
+        &self,
+        policy: &str,
+        params: Option<utils::Parameters>,
+    ) -> Result<PolicyInformation, Box<dyn Error>> {
+        let formatted_params = params.map(|p| p.format()).unwrap_or_default();
+        let url = format!("/assets/policy/{}/?{}", policy, formatted_params);
+        let resp = self.get(&url).await?;
+        let response = serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(response)
+    }
+
+    pub async fn transactions_moving_policy(
+        &self,
+        policy: &str,
+        params: Option<utils::Parameters>,
+    ) -> Result<PolicyTransactions, Box<dyn Error>> {
+        let formatted_params = params.map(|p| p.format()).unwrap_or_default();
+        let url = format!("/assets/policy/{}/txs?{}", policy, formatted_params);
+        let resp = self.get(&url).await?;
+        let response = serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(response)
+    }
+
+    pub async fn utxos_containing_policy(
+        &self,
+        policy: &str,
+        params: Option<utils::Parameters>,
+    ) -> Result<UtxosContainingPolicy, Box<dyn Error>> {
+        let formatted_params = params.map(|p| p.format()).unwrap_or_default();
+        let url = format!("/assets/policy/{}/utxos?{}", policy, formatted_params);
+        let resp = self.get(&url).await?;
+        let response = serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(response)
+    }
+}
diff --git a/src/client/block_info.rs b/src/client/block_info.rs
new file mode 100644
index 0000000..2b7da0d
--- /dev/null
+++ b/src/client/block_info.rs
@@ -0,0 +1,60 @@
+use super::maestro::Maestro;
+use crate::utils;
+use serde::{Deserialize, Serialize};
+use std::error::Error;
+
+#[derive(Serialize, Deserialize)]
+pub struct OperationalCertificate {
+    pub hot_vkey: String,
+    pub kes_period: i64,
+    pub kes_signature: String,
+    pub sequence_number: i64,
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct TotalExUnits {
+    pub mem: i64,
+    pub steps: i64,
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct BlockInfoData {
+    pub absolute_slot: i64,
+    pub block_producer: String,
+    pub confirmations: i64,
+    pub epoch: i64,
+    pub epoch_slot: i64,
+    pub era: String,
+    pub hash: String,
+    pub height: i64,
+    pub operational_certificate: OperationalCertificate,
+    pub previous_block: String,
+    pub protocol_version: Vec<i32>,
+    pub script_invocations: i32,
+    pub size: i32,
+    pub timestamp: String,
+    pub total_ex_units: TotalExUnits,
+    pub total_fees: i64,
+    pub total_output_lovelace: String,
+    pub tx_hashes: Vec<String>,
+    pub vrf_key: String,
+}
+
+#[derive(Deserialize)]
+pub struct BlockInfo {
+    pub data: BlockInfoData,
+    pub last_updated: utils::last_updated::LastUpdated,
+}
+
+impl Maestro {
+    pub async fn block_info(&self, block_height: i64) -> Result<BlockInfo, Box<dyn Error>> {
+        let url = format!("/blocks/{}", block_height);
+
+        let response = self.get(&url).await?;
+
+        let block_info =
+            serde_json::from_str(&response).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+
+        Ok(block_info)
+    }
+}
diff --git a/src/client/config.rs b/src/client/config.rs
new file mode 100644
index 0000000..c5fbcfc
--- /dev/null
+++ b/src/client/config.rs
@@ -0,0 +1,23 @@
+use serde::Deserialize;
+
+#[derive(Deserialize)]
+pub struct ClientConfig {
+    pub version: String,
+    pub timeout: i64,
+}
+
+#[derive(Deserialize)]
+pub struct Config {
+    pub client: ClientConfig,
+}
+
+impl Config {
+    pub fn get_config() -> Config {
+        Config {
+            client: ClientConfig {
+                version: "v1".to_string(),
+                timeout: 10,
+            },
+        }
+    }
+}
diff --git a/src/client/datum.rs b/src/client/datum.rs
new file mode 100644
index 0000000..1c3b8d3
--- /dev/null
+++ b/src/client/datum.rs
@@ -0,0 +1,12 @@
+use super::maestro::Maestro;
+use crate::models::datum::DatumFromHash;
+use std::error::Error;
+
+impl Maestro {
+    pub async fn datum_from_hash(&self, hash: &str) -> Result<DatumFromHash, Box<dyn Error>> {
+        let url = format!("/data/{}", hash);
+        let resp = self.get(&url).await?;
+        let datum = serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(datum)
+    }
+}
diff --git a/src/client/ecosystem.rs b/src/client/ecosystem.rs
new file mode 100644
index 0000000..3f0d011
--- /dev/null
+++ b/src/client/ecosystem.rs
@@ -0,0 +1,13 @@
+use super::maestro::Maestro;
+use crate::models::common::BasicResponse;
+use std::error::Error;
+
+impl Maestro {
+    pub async fn resolve_ada_handle(&self, handle: &str) -> Result<BasicResponse, Box<dyn Error>> {
+        let url = format!("/ecosystem/adahandle/{}", handle);
+        let resp = self.get(&url).await?;
+
+        let ada_handle = serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(ada_handle)
+    }
+}
diff --git a/src/client/epochs.rs b/src/client/epochs.rs
new file mode 100644
index 0000000..d2b8909
--- /dev/null
+++ b/src/client/epochs.rs
@@ -0,0 +1,21 @@
+use super::maestro::Maestro;
+use crate::models::epochs::EpochResp;
+use std::error::Error;
+
+impl Maestro {
+    pub async fn current_epoch(&self) -> Result<EpochResp, Box<dyn Error>> {
+        let url = "/epochs/current";
+        let resp = self.get(url).await?;
+        let current_epoch =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(current_epoch)
+    }
+
+    pub async fn specific_epoch(&self, epoch_no: i32) -> Result<EpochResp, Box<dyn Error>> {
+        let url = format!("/epochs/{}/info", epoch_no);
+        let resp = self.get(&url).await?;
+        let specific_epoch =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(specific_epoch)
+    }
+}
diff --git a/src/client/general.rs b/src/client/general.rs
new file mode 100644
index 0000000..4aed104
--- /dev/null
+++ b/src/client/general.rs
@@ -0,0 +1,38 @@
+use super::maestro::Maestro;
+use crate::models::{
+    common::BasicResponse,
+    general::{ChainTip, EraHistory, ProtocolParameters},
+};
+use std::error::Error;
+
+impl Maestro {
+    pub async fn chain_tip(&self) -> Result<ChainTip, Box<dyn Error>> {
+        let url = "/chain-tip";
+        let resp = self.get(url).await?;
+        let chain_tip = serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(chain_tip)
+    }
+
+    pub async fn era_history(&self) -> Result<EraHistory, Box<dyn Error>> {
+        let url = "/era-history";
+        let resp = self.get(url).await?;
+        let era_history = serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(era_history)
+    }
+
+    pub async fn protocol_parameters(&self) -> Result<ProtocolParameters, Box<dyn Error>> {
+        let url = "/protocol-params";
+        let resp = self.get(url).await?;
+        let protocol_params =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(protocol_params)
+    }
+
+    pub async fn block_chain_start_time(&self) -> Result<BasicResponse, Box<dyn Error>> {
+        let url = "/system-start";
+        let resp = self.get(url).await?;
+        let blockchain_start_time =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(blockchain_start_time)
+    }
+}
diff --git a/src/client/linear_vesting.rs b/src/client/linear_vesting.rs
new file mode 100644
index 0000000..31982c8
--- /dev/null
+++ b/src/client/linear_vesting.rs
@@ -0,0 +1,52 @@
+use super::maestro::Maestro;
+use crate::models::linear_vesting::{CollectTransaction, LockTransaction, VestingState};
+use serde::{Deserialize, Serialize};
+use std::error::Error;
+
+#[derive(Serialize, Deserialize)]
+pub struct LockBody {
+    pub sender: String,
+    pub beneficiary: String,
+    pub asset_policy_id: String,
+    pub asset_token_name: String,
+    pub total_vesting_quantity: i64,
+    pub vesting_period_start: i64,
+    pub vesting_period_end: i64,
+    pub first_unlock_possible_after: i64,
+    pub total_installments: i64,
+}
+
+impl Maestro {
+    pub async fn lock_assets(
+        &self,
+        lock_body: LockBody,
+    ) -> Result<LockTransaction, Box<dyn Error>> {
+        let url = "/contracts/vesting/lock";
+        let resp = self.post(url, lock_body).await?;
+        let lock_transaction =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(lock_transaction)
+    }
+
+    pub async fn state_of_vesting_assets(
+        &self,
+        beneficiary: &str,
+    ) -> Result<Vec<VestingState>, Box<dyn Error>> {
+        let url = format!("/contracts/vesting/state/{}", beneficiary);
+        let resp = self.get(&url).await?;
+        let vesting_states =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(vesting_states)
+    }
+
+    pub async fn collect_assets(
+        &self,
+        beneficiary: &str,
+    ) -> Result<CollectTransaction, Box<dyn Error>> {
+        let url = format!("/contracts/vesting/collect/{}", beneficiary);
+        let resp = self.post(&url, beneficiary).await?;
+        let collect_transaction =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(collect_transaction)
+    }
+}
diff --git a/src/client/maestro.rs b/src/client/maestro.rs
new file mode 100644
index 0000000..9f42b93
--- /dev/null
+++ b/src/client/maestro.rs
@@ -0,0 +1,76 @@
+use super::config::Config;
+use reqwest::RequestBuilder;
+use serde::Serialize;
+
+pub struct Maestro {
+    api_key: String,
+    http_client: reqwest::Client,
+    pub base_url: String,
+}
+
+impl Maestro {
+    pub fn new(api_key: String, network: String) -> Self {
+        let cfg = Config::get_config();
+        let base_url = format!(
+            "https://{}.gomaestro-api.org/{}",
+            &network, &cfg.client.version
+        );
+        let http_client = reqwest::Client::builder()
+            .timeout(std::time::Duration::from_secs(300))
+            .build()
+            .expect("Failed to create HTTP client");
+
+        Maestro {
+            api_key,
+            http_client,
+            base_url,
+        }
+    }
+
+    async fn send_request(
+        &self,
+        req: RequestBuilder,
+        response_body: &mut String,
+    ) -> Result<(), Box<dyn std::error::Error>> {
+        let req = req
+            .header("Accept", "application/json")
+            .header("api-key", &self.api_key)
+            .build()?;
+
+        let response = self.http_client.execute(req).await?;
+
+        if response.status().is_success() {
+            *response_body = response.text().await?;
+            Ok(())
+        } else {
+            Err(format!("Error: {}", response.status()).into())
+        }
+    }
+
+    pub async fn get(&self, url: &str) -> Result<String, Box<dyn std::error::Error>> {
+        let req = self.http_client.get(format!("{}{}", &self.base_url, url));
+        let mut response_body = String::new();
+        self.send_request(req, &mut response_body).await?;
+        Ok(response_body)
+    }
+
+    pub async fn post<T: Serialize>(
+        &self,
+        url: &str,
+        body: T,
+    ) -> Result<String, Box<dyn std::error::Error>> {
+        let json_body = serde_json::to_string(&body)?;
+
+        let req = self
+            .http_client
+            .post(format!("{}{}", &self.base_url, url))
+            .header("Accept", "application/json")
+            .header("api-key", &self.api_key)
+            .header("Content-Type", "application/json")
+            .body(json_body);
+
+        let mut response_body = String::new();
+        self.send_request(req, &mut response_body).await?;
+        Ok(response_body)
+    }
+}
diff --git a/src/client/mod.rs b/src/client/mod.rs
new file mode 100644
index 0000000..495fccc
--- /dev/null
+++ b/src/client/mod.rs
@@ -0,0 +1,16 @@
+pub mod accounts;
+pub mod addresses;
+pub mod asset;
+pub mod asset_policy;
+pub mod block_info;
+mod config;
+pub mod datum;
+pub mod ecosystem;
+pub mod epochs;
+pub mod general;
+pub mod linear_vesting;
+pub mod maestro;
+pub mod pools;
+pub mod scripts;
+pub mod transactions;
+pub mod txmanager;
diff --git a/src/client/pools.rs b/src/client/pools.rs
new file mode 100644
index 0000000..b1714f0
--- /dev/null
+++ b/src/client/pools.rs
@@ -0,0 +1,106 @@
+use super::maestro::Maestro;
+use crate::{
+    models::pools::{
+        PoolMintedBlocks, RegisteredPools, StakePoolDelegators, StakePoolHistory,
+        StakePoolInformation, StakePoolMetadata, StakePoolRelays, StakePoolUpdates,
+    },
+    utils::Parameters,
+};
+use std::error::Error;
+
+impl Maestro {
+    pub async fn list_of_registered_pools(
+        &self,
+        params: Option<Parameters>,
+    ) -> Result<RegisteredPools, Box<dyn Error>> {
+        let formatted_params = params.map(|p| p.format()).unwrap_or_default();
+        let url = format!("/pools{}", formatted_params);
+        let resp = self.get(&url).await?;
+        let registered_pools =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(registered_pools)
+    }
+
+    pub async fn stake_pool_minted_blocks(
+        &self,
+        pool_id: &str,
+        params: Option<Parameters>,
+    ) -> Result<PoolMintedBlocks, Box<dyn Error>> {
+        let formatted_params = params.map(|p| p.format()).unwrap_or_default();
+        let url = format!("/pools/{}/blocks{}", pool_id, formatted_params);
+        let resp = self.get(&url).await?;
+        let pool_minted_blocks =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(pool_minted_blocks)
+    }
+
+    pub async fn stake_pool_delegators(
+        &self,
+        pool_id: &str,
+        params: Option<Parameters>,
+    ) -> Result<StakePoolDelegators, Box<dyn Error>> {
+        let formatted_params = params.map(|p| p.format()).unwrap_or_default();
+        let url = format!("/pools/{}/delegators{}", pool_id, formatted_params);
+        let resp = self.get(&url).await?;
+        let stake_pool_delegators =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(stake_pool_delegators)
+    }
+
+    pub async fn stake_pool_history(
+        &self,
+        pool_id: &str,
+        params: Option<Parameters>,
+    ) -> Result<StakePoolHistory, Box<dyn Error>> {
+        let formatted_params = params.map(|p| p.format()).unwrap_or_default();
+        let url = format!("/pools/{}/history{}", pool_id, formatted_params);
+        let resp = self.get(&url).await?;
+        let stake_pool_history =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(stake_pool_history)
+    }
+
+    pub async fn stake_pool_information(
+        &self,
+        pool_id: &str,
+    ) -> Result<StakePoolInformation, Box<dyn Error>> {
+        let url = format!("/pools/{}/info", pool_id);
+        let resp = self.get(&url).await?;
+        let stake_pool_information =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(stake_pool_information)
+    }
+
+    pub async fn stake_pool_metadata(
+        &self,
+        pool_id: &str,
+    ) -> Result<StakePoolMetadata, Box<dyn Error>> {
+        let url = format!("/pools/{}/metadata", pool_id);
+        let resp = self.get(&url).await?;
+        let stake_pool_metadata =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(stake_pool_metadata)
+    }
+
+    pub async fn stake_pool_relays(
+        &self,
+        pool_id: &str,
+    ) -> Result<StakePoolRelays, Box<dyn Error>> {
+        let url = format!("/pools/{}/relays", pool_id);
+        let resp = self.get(&url).await?;
+        let stake_pool_relays =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(stake_pool_relays)
+    }
+
+    pub async fn stake_pool_updates(
+        &self,
+        pool_id: &str,
+    ) -> Result<StakePoolUpdates, Box<dyn Error>> {
+        let url = format!("/pools/{}/updates", pool_id);
+        let resp = self.get(&url).await?;
+        let stake_pool_updates =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(stake_pool_updates)
+    }
+}
diff --git a/src/client/scripts.rs b/src/client/scripts.rs
new file mode 100644
index 0000000..a9f1f76
--- /dev/null
+++ b/src/client/scripts.rs
@@ -0,0 +1,14 @@
+use super::maestro::Maestro;
+use crate::models::scripts::ScriptByHash;
+use std::error::Error;
+
+impl Maestro {
+    pub async fn script_by_hash(&self, hash: &str) -> Result<ScriptByHash, Box<dyn Error>> {
+        let url = format!("/scripts/{}", hash);
+        let resp = self.get(&url).await?;
+
+        let script_by_hash =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(script_by_hash)
+    }
+}
diff --git a/src/client/transactions.rs b/src/client/transactions.rs
new file mode 100644
index 0000000..8fcf4c9
--- /dev/null
+++ b/src/client/transactions.rs
@@ -0,0 +1,107 @@
+use super::maestro::Maestro;
+use crate::models::{
+    common::BasicResponse,
+    transactions::{
+        EvaluateTx, RedeemerEvaluation, TransactionDetails, TransactionOutputFromReference,
+        TransactionOutputsFromReferences,
+    },
+};
+use std::{collections::HashMap, error::Error};
+
+impl Maestro {
+    pub async fn address_by_output_reference(
+        &self,
+        tx_hash: &str,
+        index: i32,
+    ) -> Result<BasicResponse, Box<dyn Error>> {
+        let url = format!("/transactions/{}/outputs/{}/address", tx_hash, index);
+        let resp = self.get(&url).await?;
+        let address_by_output_reference =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(address_by_output_reference)
+    }
+
+    pub async fn submit_tx(&self, cbor: &str) -> Result<BasicResponse, Box<dyn Error>> {
+        let url = "/submit/tx";
+        let resp = self.post(url, cbor.to_string()).await?;
+        let submit_tx = serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(submit_tx)
+    }
+
+    pub async fn transaction_cbor(&self, tx_hash: &str) -> Result<BasicResponse, Box<dyn Error>> {
+        let url = format!("/transactions/{}/cbor", tx_hash);
+        let resp = self.get(&url).await?;
+        let transaction_cbor =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(transaction_cbor)
+    }
+
+    pub async fn transaction_details(
+        &self,
+        tx_hash: &str,
+    ) -> Result<TransactionDetails, Box<dyn Error>> {
+        let url = format!("/transactions/{}", tx_hash);
+        let resp = self.get(&url).await?;
+        let transaction_details =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(transaction_details)
+    }
+
+    pub async fn transaction_output_from_reference(
+        &self,
+        tx_hash: &str,
+        index: i32,
+        params: Option<HashMap<String, String>>,
+    ) -> Result<TransactionOutputFromReference, Box<dyn Error>> {
+        let formatted_params = params.map_or("".to_string(), |p| {
+            p.iter()
+                .map(|(k, v)| format!("{}={}", k, v))
+                .collect::<Vec<String>>()
+                .join("&")
+                .to_string()
+        });
+        let url = format!(
+            "/transactions/{}/outputs/{}/txo{}",
+            tx_hash, index, formatted_params
+        );
+        let resp = self.get(&url).await?;
+        let transaction_output_from_reference =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(transaction_output_from_reference)
+    }
+
+    pub async fn transaction_outputs_from_references(
+        &self,
+        references: Vec<String>,
+        params: Option<HashMap<String, String>>,
+    ) -> Result<TransactionOutputsFromReferences, Box<dyn Error>> {
+        let formatted_params = params.map_or("".to_string(), |p| {
+            p.iter()
+                .map(|(k, v)| format!("{}={}", k, v))
+                .collect::<Vec<String>>()
+                .join("&")
+                .to_string()
+        });
+        let url = format!("/transactions/outputs{}", formatted_params);
+        let resp = self.post(&url, references).await?;
+        let transaction_outputs_from_references =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(transaction_outputs_from_references)
+    }
+
+    pub async fn evaluate_tx(
+        &self,
+        tx_cbor: &str,
+        additional_utxos: Vec<String>,
+    ) -> Result<Vec<RedeemerEvaluation>, Box<dyn Error>> {
+        let url = "/transactions/evaluate";
+        let body = EvaluateTx {
+            cbor: tx_cbor.to_string(),
+            additional_utxos,
+        };
+        let resp = self.post(url, &body).await?;
+        let redeemer_evaluations =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(redeemer_evaluations)
+    }
+}
diff --git a/src/client/txmanager.rs b/src/client/txmanager.rs
new file mode 100644
index 0000000..d86926b
--- /dev/null
+++ b/src/client/txmanager.rs
@@ -0,0 +1,38 @@
+use super::maestro::Maestro;
+use crate::models::{common::BasicResponse, txmanager::TxManagerState};
+use std::error::Error;
+
+impl Maestro {
+    pub async fn tx_manager_history(&self) -> Result<Vec<TxManagerState>, Box<dyn Error>> {
+        let url = "/txmanager/history";
+        let resp = self.get(url).await?;
+        let tx_manager_states =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(tx_manager_states)
+    }
+
+    pub async fn tx_manager_submit(&self, cbor: &str) -> Result<BasicResponse, Box<dyn Error>> {
+        let url = "/txmanager";
+        let resp = self.post(url, cbor.to_string()).await?;
+        let submit_tx = serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(submit_tx)
+    }
+
+    pub async fn tx_manager_submit_turbo(
+        &self,
+        cbor: &str,
+    ) -> Result<BasicResponse, Box<dyn Error>> {
+        let url = "/txmanager/turbosubmit";
+        let resp = self.post(url, cbor.to_string()).await?;
+        let submit_tx = serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(submit_tx)
+    }
+
+    pub async fn tx_manager_state(&self, tx_hash: &str) -> Result<TxManagerState, Box<dyn Error>> {
+        let url = format!("/txmanager/{}/state", tx_hash);
+        let resp = self.get(&url).await?;
+        let tx_manager_state =
+            serde_json::from_str(&resp).map_err(|e| Box::new(e) as Box<dyn Error>)?;
+        Ok(tx_manager_state)
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..5e1e068
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,4 @@
+pub mod client;
+pub use client::maestro::Maestro;
+pub mod models;
+pub mod utils;
diff --git a/src/main.rs b/src/main.rs
deleted file mode 100644
index e7a11a9..0000000
--- a/src/main.rs
+++ /dev/null
@@ -1,3 +0,0 @@
-fn main() {
-    println!("Hello, world!");
-}
diff --git a/src/models/accounts.rs b/src/models/accounts.rs
new file mode 100644
index 0000000..e291f14
--- /dev/null
+++ b/src/models/accounts.rs
@@ -0,0 +1,100 @@
+use crate::utils;
+use serde::Deserialize;
+
+#[derive(Deserialize)]
+pub struct AccountAddresses {
+    pub data: Vec<String>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
+
+#[derive(Deserialize)]
+pub struct AccountAsset {
+    pub amount: i64,
+    pub unit: String,
+}
+
+#[derive(Deserialize)]
+pub struct AccountAssets {
+    pub data: Vec<AccountAsset>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
+
+#[derive(Deserialize)]
+pub struct StakeAccountHistoryItem {
+    pub active_stake: i64,
+    pub epoch_no: i64,
+    pub pool_id: String,
+}
+
+#[derive(Deserialize)]
+pub struct StakeAccountHistory {
+    pub data: Vec<StakeAccountHistoryItem>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
+
+#[derive(Deserialize)]
+pub struct AccountInformation {
+    pub delegated_pool: String,
+    pub registered: bool,
+    pub rewards_available: i64,
+    pub stake_address: String,
+    pub total_balance: i64,
+    pub total_rewarded: i64,
+    pub total_withdrawn: i64,
+    pub utxo_balance: i64,
+}
+
+#[derive(Deserialize)]
+pub struct StakeAccountInformation {
+    pub data: AccountInformation,
+    pub last_updated: utils::LastUpdated,
+}
+
+#[derive(Deserialize)]
+pub enum StakeRewardType {
+    Member,
+    Leader,
+    Refund,
+}
+
+#[derive(Deserialize)]
+pub struct StakeAccountReward {
+    pub amount: i64,
+    pub earned_epoch: i64,
+    pub pool_id: String,
+    pub spendable_epoch: i64,
+    pub r#type: StakeRewardType,
+}
+
+#[derive(Deserialize)]
+pub struct StakeAccountRewards {
+    pub data: Vec<StakeAccountReward>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
+
+#[derive(Deserialize)]
+pub enum StakeUpdateAction {
+    Registration,
+    Deregistration,
+    Delegation,
+    Withdrawal,
+}
+
+#[derive(Deserialize)]
+pub struct StakeAccountUpdate {
+    pub absolute_slot: i64,
+    pub action: StakeUpdateAction,
+    pub epoch_no: i64,
+    pub tx_hash: String,
+}
+
+#[derive(Deserialize)]
+pub struct StakeAccountUpdates {
+    pub data: Vec<StakeAccountUpdate>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
diff --git a/src/models/addresses.rs b/src/models/addresses.rs
new file mode 100644
index 0000000..755c35e
--- /dev/null
+++ b/src/models/addresses.rs
@@ -0,0 +1,107 @@
+use crate::utils;
+use serde::Deserialize;
+use std::collections::HashMap;
+
+#[derive(Deserialize)]
+pub enum Network {
+    Mainnet,
+    Testnet,
+}
+
+#[derive(Deserialize)]
+pub enum CredentialKind {
+    Key,
+    Script,
+}
+
+#[derive(Deserialize)]
+pub struct PaymentCredential {
+    pub bech32: String,
+    pub hex: String,
+    pub kind: CredentialKind,
+}
+
+#[derive(Deserialize)]
+pub struct StakingCredential {
+    pub bech32: String,
+    pub hex: String,
+    pub kind: CredentialKind,
+    pub pointer: Option<HashMap<String, serde_json::Value>>,
+    pub reward_address: String,
+}
+
+#[derive(Deserialize)]
+pub struct DecodedAddress {
+    pub bech32: String,
+    pub hex: String,
+    pub network: Network,
+    pub payment_cred: PaymentCredential,
+    pub staking_cred: StakingCredential,
+}
+
+#[derive(Deserialize)]
+pub struct AddressTransactionCount {
+    pub data: i32,
+    pub last_updated: utils::LastUpdated,
+}
+
+#[derive(Deserialize)]
+pub struct Transaction {
+    pub input: bool,
+    pub output: bool,
+    pub slot: i64,
+    pub tx_hash: String,
+}
+
+#[derive(Deserialize)]
+pub struct AddressTransactions {
+    pub data: Vec<Transaction>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
+
+#[derive(Deserialize)]
+pub struct UtxoReference {
+    pub index: i64,
+    pub tx_hash: String,
+}
+
+#[derive(Deserialize)]
+pub struct UtxoReferencesAtAddress {
+    pub data: Vec<UtxoReference>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
+
+#[derive(Deserialize)]
+pub struct Asset {
+    pub amount: i64,
+    pub unit: String,
+}
+
+#[derive(Deserialize)]
+pub struct Utxo {
+    pub address: String,
+    pub assets: Vec<Asset>,
+    pub datum: Option<HashMap<String, serde_json::Value>>,
+    pub index: i64,
+    pub reference_script: ReferenceScript,
+    pub tx_hash: String,
+    pub slot: i64,
+    pub tx_out_cbor: String,
+}
+
+#[derive(Deserialize)]
+pub struct ReferenceScript {
+    pub bytes: String,
+    pub hash: String,
+    pub json: HashMap<String, serde_json::Value>,
+    pub r#type: String,
+}
+
+#[derive(Deserialize)]
+pub struct UtxosAtAddress {
+    pub data: Vec<Utxo>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
diff --git a/src/models/asset.rs b/src/models/asset.rs
new file mode 100644
index 0000000..5bd9f8c
--- /dev/null
+++ b/src/models/asset.rs
@@ -0,0 +1,81 @@
+use super::asset_policy::{AssetInformation, PolicyTransaction};
+use crate::utils;
+use serde::Deserialize;
+use std::collections::HashMap;
+
+#[derive(Deserialize)]
+pub struct AccountHoldingAsset {
+    pub account: String,
+    pub amount: i64,
+}
+
+#[derive(Deserialize)]
+pub struct AccountsHoldingAsset {
+    pub data: Vec<AccountHoldingAsset>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
+
+#[derive(Deserialize)]
+pub struct AddressHoldingAsset {
+    pub address: String,
+    pub amount: i64,
+}
+
+#[derive(Deserialize)]
+pub struct AddressesHoldingAsset {
+    pub data: Vec<AddressHoldingAsset>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
+
+#[derive(Deserialize)]
+pub struct AssetInformations {
+    pub data: AssetInformation,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
+
+#[derive(Deserialize)]
+pub struct AssetTransactions {
+    pub data: Vec<PolicyTransaction>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
+
+#[derive(Deserialize)]
+pub struct Metadata {
+    pub json: Option<HashMap<String, serde_json::Value>>,
+    pub key: Option<HashMap<String, serde_json::Value>>,
+}
+
+#[derive(Deserialize)]
+pub struct AssetUpdate {
+    pub block_timestamp: i64,
+    pub metadata: Metadata,
+    pub mint_amount: i64,
+    pub tx_hash: String,
+}
+
+#[derive(Deserialize)]
+pub struct AssetUpdates {
+    pub data: Vec<AssetUpdate>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
+
+#[derive(Deserialize)]
+pub struct AssetUtxo {
+    pub address: String,
+    pub amount: i64,
+    pub index: i64,
+    pub slot: i64,
+    pub tx_hash: String,
+}
+
+#[derive(Deserialize)]
+pub struct AssetUtxos {
+    pub data: Vec<AssetUtxo>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
diff --git a/src/models/asset_policy.rs b/src/models/asset_policy.rs
new file mode 100644
index 0000000..8c44f5e
--- /dev/null
+++ b/src/models/asset_policy.rs
@@ -0,0 +1,85 @@
+use super::addresses::Utxo;
+use crate::utils;
+use serde::Deserialize;
+use std::collections::HashMap;
+
+#[derive(Deserialize)]
+pub struct AssetNameAndAmount {
+    pub name: String,
+    pub amount: i64,
+}
+
+#[derive(Deserialize)]
+pub struct AccountHolding {
+    pub account: String,
+    pub assets: Vec<AssetNameAndAmount>,
+}
+
+#[derive(Deserialize)]
+pub struct AccountsHoldingPolicy {
+    pub data: Vec<AccountHolding>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
+
+#[derive(Deserialize)]
+pub struct AddressHolding {
+    pub address: String,
+    pub assets: Vec<AssetNameAndAmount>,
+}
+
+#[derive(Deserialize)]
+pub struct AddressesHoldingPolicy {
+    pub data: Vec<AddressHolding>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
+
+#[derive(Deserialize)]
+pub struct Standards {
+    pub cip25_metadata: HashMap<String, serde_json::Value>,
+    pub cip68_metadata: HashMap<String, serde_json::Value>,
+}
+
+#[derive(Deserialize)]
+pub struct AssetInformation {
+    pub asset_name: String,
+    pub asset_name_ascii: String,
+    pub asset_standards: Standards,
+    pub burn_tx_count: i64,
+    pub fingerprint: String,
+    pub first_mint_time: i64,
+    pub first_mint_tx: String,
+    pub latest_mint_tx_metadata: HashMap<String, serde_json::Value>,
+    pub mint_tx_count: i64,
+    pub token_registry_metadata: HashMap<String, serde_json::Value>,
+    pub total_supply: i64,
+}
+
+#[derive(Deserialize)]
+pub struct PolicyInformation {
+    pub data: Vec<AssetInformation>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
+
+#[derive(Deserialize)]
+pub struct PolicyTransaction {
+    pub block_height: i64,
+    pub epoch_no: i64,
+    pub tx_hash: Option<String>,
+}
+
+#[derive(Deserialize)]
+pub struct PolicyTransactions {
+    pub data: Vec<PolicyTransaction>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
+
+#[derive(Deserialize)]
+pub struct UtxosContainingPolicy {
+    pub data: Vec<Utxo>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
diff --git a/src/models/common.rs b/src/models/common.rs
new file mode 100644
index 0000000..a7738f6
--- /dev/null
+++ b/src/models/common.rs
@@ -0,0 +1,8 @@
+use crate::utils::LastUpdated;
+use serde::Deserialize;
+
+#[derive(Deserialize)]
+pub struct BasicResponse {
+    pub data: String,
+    pub last_updated: LastUpdated,
+}
diff --git a/src/models/datum.rs b/src/models/datum.rs
new file mode 100644
index 0000000..450181f
--- /dev/null
+++ b/src/models/datum.rs
@@ -0,0 +1,15 @@
+use crate::utils;
+use serde::{Deserialize, Serialize};
+use serde_json::Value;
+
+#[derive(Serialize, Deserialize)]
+pub struct Datum {
+    pub bytes: String,
+    pub json: Value,
+}
+
+#[derive(Deserialize)]
+pub struct DatumFromHash {
+    pub data: Datum,
+    pub last_updated: utils::LastUpdated,
+}
diff --git a/src/models/epochs.rs b/src/models/epochs.rs
new file mode 100644
index 0000000..b1e4019
--- /dev/null
+++ b/src/models/epochs.rs
@@ -0,0 +1,17 @@
+use crate::utils;
+use serde::Deserialize;
+
+#[derive(Deserialize)]
+pub struct Epoch {
+    pub blk_count: i32,
+    pub epoch_no: i32,
+    pub fees: i32,
+    pub start_time: i32,
+    pub tx_count: i32,
+}
+
+#[derive(Deserialize)]
+pub struct EpochResp {
+    pub data: Epoch,
+    pub last_updated: utils::LastUpdated,
+}
diff --git a/src/models/general.rs b/src/models/general.rs
new file mode 100644
index 0000000..6bd98c2
--- /dev/null
+++ b/src/models/general.rs
@@ -0,0 +1,92 @@
+use crate::utils;
+use serde::Deserialize;
+
+#[derive(Deserialize)]
+pub struct ChainTipData {
+    pub block_hash: String,
+    pub height: i64,
+    pub slot: i64,
+}
+
+#[derive(Deserialize)]
+pub struct ChainTip {
+    pub data: ChainTipData,
+    pub last_updated: utils::LastUpdated,
+}
+
+#[derive(Deserialize)]
+pub struct EraTimeStamp {
+    pub epoch: i64,
+    pub slot: i64,
+    pub time: i64,
+}
+
+#[derive(Deserialize)]
+pub struct EraParams {
+    pub epoch_length: i64,
+    pub safe_zone: i64,
+    pub slot_length: i64,
+}
+
+#[derive(Deserialize)]
+pub struct Era {
+    pub end: EraTimeStamp,
+    pub parameters: EraParams,
+    pub start: EraTimeStamp,
+}
+
+#[derive(Deserialize)]
+pub struct EraHistory {
+    pub data: Vec<Era>,
+    pub last_updated: utils::LastUpdated,
+}
+
+#[derive(Deserialize)]
+pub struct ProtocolParameters {
+    pub data: ProtocolParams,
+    pub last_updated: utils::LastUpdated,
+}
+
+#[derive(Deserialize)]
+pub struct ExUnits {
+    pub memory: i64,
+    pub steps: i64,
+}
+
+#[derive(Deserialize)]
+pub struct StringExUnits {
+    pub memory: String,
+    pub steps: String,
+}
+
+#[derive(Deserialize)]
+pub struct ProtocolVersion {
+    pub major: i64,
+    pub minor: i64,
+}
+
+#[derive(Deserialize)]
+pub struct ProtocolParams {
+    pub coins_per_utxo_byte: i64,
+    pub collateral_percentage: i64,
+    pub cost_models: serde_json::Value,
+    pub desired_number_of_pools: i64,
+    pub max_block_body_size: i64,
+    pub max_block_header_size: i64,
+    pub max_collateral_inputs: i64,
+    pub max_execution_units_per_block: ExUnits,
+    pub max_execution_units_per_transaction: ExUnits,
+    pub max_tx_size: i64,
+    pub max_value_size: i64,
+    pub min_fee_coefficient: i64,
+    pub min_fee_constant: i64,
+    pub min_pool_cost: i64,
+    pub monetary_expansion: String,
+    pub pool_deposit: i64,
+    pub pool_influence: String,
+    pub pool_retirement_epoch_bound: i64,
+    pub prices: StringExUnits,
+    pub protocol_version: ProtocolVersion,
+    pub stake_key_deposit: i64,
+    pub treasury_expansion: String,
+}
diff --git a/src/models/linear_vesting.rs b/src/models/linear_vesting.rs
new file mode 100644
index 0000000..aac97d2
--- /dev/null
+++ b/src/models/linear_vesting.rs
@@ -0,0 +1,24 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize)]
+pub struct LockTransaction {
+    pub cbor_hex: String,
+    pub tx_hash: String,
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct VestingState {
+    pub asset_name: String,
+    pub asset_symbol: String,
+    pub remaining_vesting_quantity: i64,
+    pub total_installments: i64,
+    pub total_vesting_quantity: i64,
+    pub vesting_period_start: i64,
+    pub vesting_period_end: i64,
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct CollectTransaction {
+    pub cbor_hex: String,
+    pub tx_hash: String,
+}
diff --git a/src/models/mod.rs b/src/models/mod.rs
new file mode 100644
index 0000000..8eeb790
--- /dev/null
+++ b/src/models/mod.rs
@@ -0,0 +1,13 @@
+pub mod accounts;
+pub mod addresses;
+pub mod asset;
+pub mod asset_policy;
+pub mod common;
+pub mod datum;
+pub mod epochs;
+pub mod general;
+pub mod linear_vesting;
+pub mod pools;
+pub mod scripts;
+pub mod transactions;
+pub mod txmanager;
diff --git a/src/models/pools.rs b/src/models/pools.rs
new file mode 100644
index 0000000..d879f5b
--- /dev/null
+++ b/src/models/pools.rs
@@ -0,0 +1,144 @@
+use crate::utils;
+use serde::Deserialize;
+
+#[derive(Deserialize)]
+pub struct Pool {
+    pub pool_id_bech32: String,
+    pub ticker: String,
+}
+
+#[derive(Deserialize)]
+pub struct RegisteredPools {
+    pub data: Vec<Pool>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
+
+#[derive(Deserialize)]
+pub struct Block {
+    pub abs_slot: i64,
+    pub block_hash: String,
+    pub block_height: i64,
+    pub block_time: i64,
+    pub epoch_no: i64,
+    pub epoch_slot: i64,
+}
+
+#[derive(Deserialize)]
+pub struct PoolMintedBlocks {
+    pub data: Vec<Block>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
+
+#[derive(Deserialize)]
+pub struct StakePoolDelegator {
+    pub active_epoch_no: i64,
+    pub amount: String,
+    pub latest_delegation_tx_hash: String,
+    pub stake_address: String,
+}
+
+#[derive(Deserialize)]
+pub struct StakePoolDelegators {
+    pub data: Vec<StakePoolDelegator>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
+
+#[derive(Deserialize)]
+pub struct StakePoolHistoryData {
+    pub active_stake: i64,
+    pub active_stake_pct: String,
+    pub block_cnt: i64,
+    pub deleg_rewards: i64,
+    pub delegator_cnt: i64,
+    pub epoch_no: i64,
+    pub epoch_ros: String,
+    pub fixed_cost: i64,
+    pub margin: i64,
+    pub pool_fees: i64,
+    pub saturation_pct: serde_json::Value,
+}
+
+#[derive(Deserialize)]
+pub struct StakePoolHistory {
+    pub data: Vec<StakePoolHistoryData>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
+
+#[derive(Deserialize)]
+pub struct Relay {
+    pub dns: String,
+    pub ipv4: String,
+    pub ipv6: String,
+    pub port: i64,
+    pub srv: String,
+}
+
+#[derive(Deserialize)]
+pub struct StakePoolDetails {
+    pub active_epoch_no: i64,
+    pub active_stake: i64,
+    pub block_count: i64,
+    pub fixed_cost: i64,
+    pub live_delegators: i64,
+    pub live_pledge: i64,
+    pub live_saturation: String,
+    pub live_stake: i64,
+    pub margin: i64,
+    pub meta_hash: serde_json::Value,
+    pub meta_json: serde_json::Value,
+    pub meta_url: serde_json::Value,
+    pub op_cert: String,
+    pub op_cert_counter: i64,
+    pub owners: Vec<String>,
+    pub pledge: i64,
+    pub pool_id_bech32: String,
+    pub pool_id_hex: String,
+    pub pool_status: String,
+    pub relays: Vec<Relay>,
+    pub retiring_epoch: serde_json::Value,
+    pub reward_addr: String,
+    pub sigma: String,
+    pub vrf_key_hash: String,
+}
+
+#[derive(Deserialize)]
+pub struct StakePoolInformation {
+    pub data: StakePoolDetails,
+    pub last_updated: utils::LastUpdated,
+}
+
+#[derive(Deserialize)]
+pub struct Poolmetadata {
+    pub meta_hash: String,
+    pub meta_json: serde_json::Value,
+    pub meta_url: String,
+    pub pool_id_bech32: String,
+}
+
+#[derive(Deserialize)]
+pub struct StakePoolMetadata {
+    pub data: Poolmetadata,
+    pub last_updated: utils::LastUpdated,
+}
+
+#[derive(Deserialize)]
+pub struct RelaysAndId {
+    pub pool_id_bech32: String,
+    pub relays: Vec<Relay>,
+}
+
+#[derive(Deserialize)]
+pub struct StakePoolRelays {
+    pub data: Vec<RelaysAndId>,
+    pub last_updated: utils::LastUpdated,
+}
+
+#[derive(Deserialize)]
+pub struct StakePoolUpdates {
+    pub data: Vec<StakePoolDetails>,
+    pub last_updated: utils::LastUpdated,
+}
diff --git a/src/models/scripts.rs b/src/models/scripts.rs
new file mode 100644
index 0000000..36fcc13
--- /dev/null
+++ b/src/models/scripts.rs
@@ -0,0 +1,23 @@
+use crate::utils;
+use serde::Deserialize;
+use serde::Serialize;
+
+#[derive(Serialize, Deserialize)]
+pub enum ScriptVersion {
+    PlutusV1,
+    PlutusV2,
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct Script {
+    pub bytes: String,
+    pub hash: String,
+    pub json: serde_json::Value,
+    pub r#type: ScriptVersion,
+}
+
+#[derive(Deserialize)]
+pub struct ScriptByHash {
+    pub data: Script,
+    pub last_updated: utils::LastUpdated,
+}
diff --git a/src/models/transactions.rs b/src/models/transactions.rs
new file mode 100644
index 0000000..fa717d7
--- /dev/null
+++ b/src/models/transactions.rs
@@ -0,0 +1,96 @@
+use crate::utils;
+use serde::{Deserialize, Serialize};
+
+use super::{addresses::Utxo, scripts::Script};
+
+#[derive(Deserialize)]
+pub struct Certificates {
+    pub mir_transfers: Vec<serde_json::Value>,
+    pub pool_registrations: Vec<serde_json::Value>,
+    pub pool_retirements: Vec<serde_json::Value>,
+    pub stake_delegations: Vec<serde_json::Value>,
+    pub stake_deregistrations: Vec<serde_json::Value>,
+    pub stake_registrations_reserves: Vec<serde_json::Value>,
+}
+
+#[derive(Deserialize)]
+pub struct Redeemers {
+    pub certificates: Vec<serde_json::Value>,
+    pub mints: Vec<serde_json::Value>,
+    pub spends: Vec<serde_json::Value>,
+    pub withdrawals: Vec<serde_json::Value>,
+}
+
+#[derive(Deserialize)]
+pub struct TransactionDetail {
+    pub additional_signers: Vec<String>,
+    pub block_absolute_slot: i64,
+    pub block_hash: String,
+    pub block_height: i64,
+    pub block_timestamp: i64,
+    pub block_tx_index: i64,
+    pub certificates: Certificates,
+    pub collateral_inputs: Vec<Utxo>,
+    pub collateral_return: serde_json::Value,
+    pub deposit: i64,
+    pub fee: i64,
+    pub inputs: Vec<Utxo>,
+    pub invalid_before: i64,
+    pub invalid_hereafter: i64,
+    pub metadata: serde_json::Value,
+    pub mint: Vec<serde_json::Value>,
+    pub outputs: Vec<Utxo>,
+    pub redeemers: Vec<Redeemers>,
+    pub reference_inputs: Vec<serde_json::Value>,
+    pub scripts_executed: Vec<Script>,
+    pub scripts_succesful: bool,
+    pub size: i64,
+    pub tx_hash: String,
+    pub withdrawals: Vec<serde_json::Value>,
+}
+
+#[derive(Deserialize)]
+pub struct TransactionDetails {
+    pub data: TransactionDetail,
+    pub last_updated: utils::LastUpdated,
+}
+
+#[derive(Deserialize)]
+pub struct TransactionOutputFromReference {
+    pub data: Utxo,
+    pub last_updated: utils::LastUpdated,
+}
+
+#[derive(Deserialize)]
+pub struct TxoReference {
+    pub tx_hash: String,
+    pub index: i32,
+}
+
+#[derive(Deserialize)]
+pub struct TransactionOutputsFromReferences {
+    pub data: Vec<Utxo>,
+    pub last_updated: utils::LastUpdated,
+    pub next_cursor: Option<String>,
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct EvaluateTx {
+    pub cbor: String,
+    pub additional_utxos: Vec<String>,
+}
+
+#[derive(Deserialize)]
+pub struct ExecutionUnits {
+    pub mem: i64,
+    pub steps: i64,
+}
+
+#[derive(Deserialize)]
+pub struct RedeemerEvaluation {
+    pub ex_units: ExecutionUnits,
+    pub redeemer_index: i32,
+    pub redeemer_tag: String,
+}
+
+pub type EvaluateTxResponse = Vec<RedeemerEvaluation>;
diff --git a/src/models/txmanager.rs b/src/models/txmanager.rs
new file mode 100644
index 0000000..7036107
--- /dev/null
+++ b/src/models/txmanager.rs
@@ -0,0 +1,9 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize)]
+pub struct TxManagerState {
+    pub block: String,
+    pub state: String,
+    pub timestamp: String,
+    pub transaction_hash: String,
+}
diff --git a/src/utils/last_updated.rs b/src/utils/last_updated.rs
new file mode 100644
index 0000000..ef4cfeb
--- /dev/null
+++ b/src/utils/last_updated.rs
@@ -0,0 +1,8 @@
+use serde::Deserialize;
+
+#[derive(Deserialize)]
+pub struct LastUpdated {
+    pub block_hash: String,
+    pub block_slot: i64,
+    pub timestamp: String,
+}
diff --git a/src/utils/mod.rs b/src/utils/mod.rs
new file mode 100644
index 0000000..6c5fb7a
--- /dev/null
+++ b/src/utils/mod.rs
@@ -0,0 +1,4 @@
+pub mod last_updated;
+pub use last_updated::LastUpdated;
+pub mod parameters;
+pub use parameters::Parameters;
diff --git a/src/utils/parameters.rs b/src/utils/parameters.rs
new file mode 100644
index 0000000..3948990
--- /dev/null
+++ b/src/utils/parameters.rs
@@ -0,0 +1,67 @@
+pub struct Parameters {
+    params: Vec<String>,
+}
+
+impl Default for Parameters {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl Parameters {
+    pub fn new() -> Self {
+        Parameters { params: Vec::new() }
+    }
+
+    pub fn format(&self) -> String {
+        if self.params.is_empty() {
+            String::new()
+        } else {
+            format!("?{}", self.params.join("&"))
+        }
+    }
+
+    pub fn count(&mut self, amount: i32) {
+        self.params.push(format!("count={}", amount));
+    }
+
+    pub fn cursor(&mut self, cursor: &str) {
+        self.params.push(format!("cursor={}", cursor));
+    }
+
+    pub fn policy(&mut self, policy: &str) {
+        self.params.push(format!("policy={}", policy));
+    }
+
+    pub fn epoch_no(&mut self, epoch_no: i64) {
+        self.params.push(format!("epoch_no={}", epoch_no));
+    }
+
+    pub fn from(&mut self, from: i64) {
+        self.params.push(format!("from={}", from));
+    }
+
+    pub fn to(&mut self, to: i64) {
+        self.params.push(format!("to={}", to));
+    }
+
+    pub fn set_asc_order(&mut self) {
+        self.params.push("order=asc".to_string());
+    }
+
+    pub fn set_desc_order(&mut self) {
+        self.params.push("order=desc".to_string());
+    }
+
+    pub fn with_cbor(&mut self) {
+        self.params.push("with_cbor=true".to_string());
+    }
+
+    pub fn resolve_datums(&mut self) {
+        self.params.push("resolve_datums=true".to_string());
+    }
+
+    pub fn from_height(&mut self, height: i64) {
+        self.params.push(format!("from_height={}", height));
+    }
+}