diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..1c6314a
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,12 @@
+root = true
+
+[*]
+indent_style = tab
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.yml]
+indent_style = space
+indent_size = 2
diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..6313b56
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+* text=auto eol=lf
diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..0ca3baa
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,13 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
+
+version: 2
+updates:
+  - package-ecosystem: "npm" # See documentation for possible values
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "daily"
+    allow:
+      - dependency-name: "@slangroom/*"
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..c81f099
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,16 @@
+name: 🧪 & 📣
+on:
+  - push
+  - pull_request
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+    steps:
+      - uses: actions/checkout@v4
+      - uses: oven-sh/setup-bun@v1
+        with:
+          bun-version: latest
+      - run: bun i
+      - run: make tests
diff --git a/Makefile b/Makefile
index 65bed85..1211d38 100644
--- a/Makefile
+++ b/Makefile
@@ -1,19 +1,30 @@
 .PHONY: help
 
+SOURCES = $(shell find src -type f -name '*.ts')
+LIBS = node_modules
+
 DEPS = bun
 K := $(foreach exec,$(DEPS),\
         $(if $(shell which $(exec)),some string,$(error "🥶 `$(exec)` not found in PATH please install it")))
 
-help: ## 🛟 Show this help message
-	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf " \033[36m 👉🏻 %-7s\033[0m %s\n", $$1, $$2}'
+help: ## 🛟  Show this help message
+	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf " \033[36m 👉 %-14s\033[0m %s\n", $$1, $$2}'
 
 
-slangroom-exec: index.ts ## 🛠️ Build slangroom-exec
-	bun build ./index.ts --compile --outfile slangroom-exec
+slangroom-exec: $(SOURCES) $(LIBS) ## 🛠️  Build slangroom-exec
+	bun build ./src/index.ts --compile --outfile slangroom-exec
 
 clean: ## 🧹 Clean the build
 	@rm -f slangroom-exec
 	@echo "🧹 Cleaned the build"
 
 tests: slangroom-exec ## 🧪 Run tests
-	./test/bats/bin/bats test/test.bats
+	./test/bats/bin/bats -j 15 test/*.bats
+	bun test --coverage
+
+$(LIBS): package.json
+	bun i
+
+video:
+	PATH=docs:$$PATH
+	cd docs && vhs slangroom-exec.tape
diff --git a/README.md b/README.md
deleted file mode 100644
index 1e82858..0000000
--- a/README.md
+++ /dev/null
@@ -1,15 +0,0 @@
-# slangroom-exec
-
-To install dependencies:
-
-```bash
-bun install
-```
-
-To run:
-
-```bash
-bun run index.ts
-```
-
-This project was created using `bun init` in bun v1.1.7. [Bun](https://bun.sh) is a fast all-in-one JavaScript runtime.
diff --git a/bun.lockb b/bun.lockb
index 680d5bb..cb054a7 100755
Binary files a/bun.lockb and b/bun.lockb differ
diff --git a/bunfig.toml b/bunfig.toml
new file mode 100644
index 0000000..e5133e9
--- /dev/null
+++ b/bunfig.toml
@@ -0,0 +1,2 @@
+[test]
+coverageThreshold = 0.9
diff --git a/docs/readme.md b/docs/readme.md
new file mode 100644
index 0000000..5a3d1bd
--- /dev/null
+++ b/docs/readme.md
@@ -0,0 +1,6 @@
+Generate the video with https://github.com/charmbracelet/vhs
+by running
+
+```bash
+vhs slangroom-exec.tape
+```
diff --git a/docs/simple_slangroom.slang b/docs/simple_slangroom.slang
new file mode 120000
index 0000000..8f10708
--- /dev/null
+++ b/docs/simple_slangroom.slang
@@ -0,0 +1 @@
+../test/fixtures/simple_slangroom.slang
\ No newline at end of file
diff --git a/docs/slangroom-exec.gif b/docs/slangroom-exec.gif
new file mode 100644
index 0000000..9673671
Binary files /dev/null and b/docs/slangroom-exec.gif differ
diff --git a/docs/slangroom-exec.tape b/docs/slangroom-exec.tape
new file mode 100644
index 0000000..8845253
--- /dev/null
+++ b/docs/slangroom-exec.tape
@@ -0,0 +1,17 @@
+Output slangroom-exec.gif
+
+Set Shell fish
+Type "cat simple_slangroom.slang"
+Sleep 500ms
+Enter
+Sleep 10.5s
+Escape
+Type "cat simple_slangroom.slang | slexfe"
+Sleep 2s
+Enter
+Sleep 6.5s
+Type "cat simple_slangroom.slang | slexfe | slangroom-exec"
+Sleep 1.5s
+Enter
+Sleep 3.5s
+
diff --git a/docs/slexfe b/docs/slexfe
new file mode 120000
index 0000000..8fc0cb9
--- /dev/null
+++ b/docs/slexfe
@@ -0,0 +1 @@
+../src/slexfe
\ No newline at end of file
diff --git a/index.ts b/index.ts
deleted file mode 100644
index cf57a22..0000000
--- a/index.ts
+++ /dev/null
@@ -1,61 +0,0 @@
-import { Slangroom } from "@slangroom/core";
-import { ethereum } from "@slangroom/ethereum";
-import { fs } from "@slangroom/fs";
-import { git } from "@slangroom/git";
-import { helpers } from "@slangroom/helpers";
-import { http } from "@slangroom/http";
-import { JSONSchema } from "@slangroom/json-schema";
-import { oauth } from "@slangroom/oauth";
-import { pocketbase } from "@slangroom/pocketbase";
-import { qrcode } from "@slangroom/qrcode";
-import { redis } from "@slangroom/redis";
-import type { ZenParams } from "@slangroom/shared";
-import { shell } from "@slangroom/shell";
-import { timestamp } from "@slangroom/timestamp";
-import { wallet } from "@slangroom/wallet";
-import { zencode } from "@slangroom/zencode";
-
-const the_input = await Bun.stdin.text();
-const s = new Slangroom([
-  ethereum,
-  fs,
-  git,
-  helpers,
-  http,
-  JSONSchema,
-  oauth,
-  pocketbase,
-  qrcode,
-  redis,
-  shell,
-  timestamp,
-  wallet,
-  zencode,
-]);
-
-const decode_and_trim = (r: string) =>
-  Buffer.from(r, "base64").toString().trim();
-const decode = (r: string) => Buffer.from(r, "base64").toString();
-const decode_and_json = (r: string) => JSON.parse(decode(r));
-type Names = "conf" | "data" | "keys" | "extra";
-
-const decode_param = (source: string, name: Names, fn: Function) => {
-  if (source && source !== "") {
-    try {
-      opts[name] = fn(source);
-    } catch (e) {
-      console.error(`${name} is malformed`);
-      process.exit(2);
-    }
-  }
-};
-
-const [c, sl, d, k, e, cx] = the_input.split("\n");
-const opts: ZenParams = { data: {}, keys: {} };
-const contract = decode(sl);
-decode_param(c, "conf", decode_and_trim);
-decode_param(d, "data", decode_and_json);
-decode_param(k, "keys", decode_and_json);
-decode_param(e, "extra", decode_and_json);
-const { result } = await s.execute(contract, opts);
-await Bun.write(Bun.stdout, JSON.stringify(result));
diff --git a/license b/license
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/license
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
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+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
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+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
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+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
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+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
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+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
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+
+      "Contribution" shall mean any work of authorship, including
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+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
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+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
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+      Work and such Derivative Works in Source or Object form.
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+   3. Grant of Patent License. Subject to the terms and conditions of
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+      or a Contribution incorporated within the Work constitutes direct
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+
+   4. Redistribution. You may reproduce and distribute copies of the
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+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   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
+      this License, without any additional terms or conditions.
+      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,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      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.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      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
+      incurred by, or claims asserted against, such Contributor by reason
+      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 "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   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
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/package.json b/package.json
index f76423a..a5a2bc8 100644
--- a/package.json
+++ b/package.json
@@ -24,6 +24,7 @@
     "@slangroom/shell": "^1.30.0",
     "@slangroom/timestamp": "^1.30.0",
     "@slangroom/wallet": "^1.30.0",
-    "@slangroom/zencode": "^1.30.0"
+    "@slangroom/zencode": "^1.30.0",
+    "type-fest": "^4.18.2"
   }
 }
\ No newline at end of file
diff --git a/readme.md b/readme.md
new file mode 100644
index 0000000..e52dc85
--- /dev/null
+++ b/readme.md
@@ -0,0 +1,65 @@
+# slangroom-exec
+
+The missing slangroom executor. We are working the .wasm transpile of the
+slangroom, but in the meantime this repo could be used similar to the `zencode-exec`
+to embed [https://dyne.org/slangroom](slangroom) into other languages.
+
+`slangroom-exec` is a simple utility that reads from STDIN the following content
+
+1. conf
+1. slangroom-contract
+1. data
+1. keys
+1. extra
+1. context
+
+separated each per new-line and encoded in `base64` and outputs the slangroom execution to stoud.
+
+### Demo
+
+![Slangroom-exec Demo](./docs/slangroom-exec.gif)
+
+## SLangroom-EXec Format Encoder
+
+This script is used to encode the format of the slangroom-exec command into a string that can be used in the slangroom-exec command.
+
+The script accepts the six parameters that are used in the slangroom-exec command and encodes them into a string. The encoded string is then printed to stdout.
+
+### Usage
+
+For each of the parameters, the script also has option flags:
+
+-c or --conf for conf
+-s or --slangroom-contract for slangroom-contract
+-d or --data for data
+-k or --keys for keys
+-e or --extra for extra
+-x or --context for context
+-F or --filename lookup files based on a prefix
+-h or --help to print the help message
+
+#### The named convention `-F` option flag
+
+When you have a suite of files if you follow the formal slangroom name convention as such:
+
+conf: `${prefix}.conf`
+slangroom-contract: `${prefix}.slang`
+data: `${prefix}.data.json`
+keys: `${prefix}.keys.json`
+extra: `${prefix}.extra.json`
+context: `${prefix}.context`
+
+you can just run
+
+#### STDIN
+
+if you just pass something in `/dev/stdin` is interpreted as the contract.
+This also overwrites the `--slangroom-contract` option flag if passed as a duplicate.
+
+## Examples
+
+To encode a slangroom-contract and data, you can run:
+
+To encode parameters from a file, you can run:
+
+Where myParameters.txt is a file containing your parameters.
diff --git a/src/index.ts b/src/index.ts
new file mode 100644
index 0000000..14f531e
--- /dev/null
+++ b/src/index.ts
@@ -0,0 +1,5 @@
+import { slangroom_exec } from "./lib";
+
+const the_input = await Bun.stdin.text();
+const the_output = await slangroom_exec(the_input);
+await Bun.write(Bun.stdout, the_output);
diff --git a/src/lib.ts b/src/lib.ts
new file mode 100644
index 0000000..491bbbd
--- /dev/null
+++ b/src/lib.ts
@@ -0,0 +1,101 @@
+import { Slangroom } from "@slangroom/core";
+import { ethereum } from "@slangroom/ethereum";
+import { fs } from "@slangroom/fs";
+import { git } from "@slangroom/git";
+import { helpers } from "@slangroom/helpers";
+import { http } from "@slangroom/http";
+import { JSONSchema } from "@slangroom/json-schema";
+import { oauth } from "@slangroom/oauth";
+import { pocketbase } from "@slangroom/pocketbase";
+import { qrcode } from "@slangroom/qrcode";
+import { redis } from "@slangroom/redis";
+import { shell } from "@slangroom/shell";
+import { timestamp } from "@slangroom/timestamp";
+import { wallet } from "@slangroom/wallet";
+import { zencode } from "@slangroom/zencode";
+
+import type { ZenParams } from "@slangroom/shared";
+import type { StringKeyOf } from "type-fest";
+type ZenParamKey = StringKeyOf<ZenParams>;
+
+export const decode = (r: string) => Buffer.from(r, "base64").toString();
+export const decode_and_trim = (r: string) => decode(r).trim();
+export const decode_and_json = (r: string) => {
+	try {
+		return JSON.parse(decode(r));
+	} catch (e) {
+		console.error("JSON is malformed");
+		process.exit(3);
+	}
+};
+
+export const slangroom_exec = async (input: string) => {
+	const s = new Slangroom([
+		ethereum,
+		fs,
+		git,
+		helpers,
+		http,
+		JSONSchema,
+		oauth,
+		pocketbase,
+		qrcode,
+		redis,
+		shell,
+		timestamp,
+		wallet,
+		zencode,
+	]);
+
+	const [c, sl, d, k, e, cx] = input.split("\n");
+
+	if (sl.trim().length === 0) {
+		console.error("Slangroom contract is empty");
+		process.exit(1);
+	}
+
+	const opts: ZenParams = { data: {}, keys: {} };
+	const contract = decode(sl);
+
+	const decode_slangroom_param = (
+		source: string,
+		key: ZenParamKey,
+		fn: Function
+	) => {
+		if (source && source !== "") {
+			try {
+				opts[key] = fn(source);
+			} catch (e) {
+				console.error(`${key.toUpperCase()} is malformed`);
+				process.exit(2);
+			}
+		}
+	};
+
+	decode_slangroom_param(c, "conf", decode_and_trim);
+	decode_slangroom_param(d, "data", decode_and_json);
+	decode_slangroom_param(k, "keys", decode_and_json);
+	decode_slangroom_param(e, "extra", decode_and_json);
+	const { result } = await s.execute(contract, opts);
+	return JSON.stringify(result);
+};
+
+export const encode = (
+	conf?: string,
+	contract?: string,
+	data?: string,
+	keys?: string,
+	extra?: string,
+	ctx?: string
+) => {
+	const b64 = (source: string) => Buffer.from(source).toString("base64");
+
+	return [
+		b64(conf ?? ""),
+		b64(contract ?? ""),
+		b64(data ?? ""),
+		b64(keys ?? ""),
+		b64(extra ?? ""),
+		b64(ctx ?? ""),
+	].join("\n");
+};
diff --git a/src/slexfe b/src/slexfe
new file mode 100755
index 0000000..d2d994f
--- /dev/null
+++ b/src/slexfe
@@ -0,0 +1,95 @@
+#!/bin/env bash
+# SLangroom-EXec Format Encoder
+# This script is used to encode the format of the slangroom-exec command
+# into a string that can be used in the slangroom-exec command
+
+print_help() {
+    echo -e "\033[1mUsage:\033[0m"
+    echo -e "  $0 [options]\n"
+    echo -e "\033[1mOptions:\033[0m"
+    echo -e "  -c, --conf               conf filename to read"
+    echo -e "  -s, --slangroom-contract slangroom-contract filename to read"
+    echo -e "  -d, --data               data filename to read"
+    echo -e "  -k, --keys               keys filename to read"
+    echo -e "  -e, --extra              extra filename to read"
+    echo -e "  -x, --context            context filename to read"
+    echo -e "  -F, --filename           lookup files based on a prefix"
+    echo -e "  -h, --help               Print this help message"
+    echo -e "\nEncode the parameters into a base64 string."
+    exit 1
+}
+
+# Function to encode to base64
+encode_base64() {
+    cat "$1" 2>/dev/null | base64 -w 0
+}
+
+encode_json_base64() {
+    jq -c . "$1" 2>/dev/null | base64 -w 0
+}
+
+# check that jq and getopt are installed
+
+if ! command -v jq &> /dev/null; then
+    echo "jq is not installed. Please install jq to use this script."
+    exit 1
+fi
+
+if ! command -v getopt &> /dev/null; then
+    echo "getopt is not installed. Please install getopt to use this script."
+    exit 1
+fi
+
+# Default values for options
+conf=""
+slangroom_contract=""
+data=""
+keys=""
+extra=""
+context=""
+
+OPTIONS=$(getopt -o c:s:d:k:e:x:F:h --long conf:,slangroom-contract:,data:,keys:,extra:,context:,filename:,help -n 'parse-options' -- "$@")
+if [ $? -ne 0 ]; then
+    echo "Failed to parse options." >&2
+    exit 1
+fi
+eval set -- "$OPTIONS"
+
+while true; do
+    case "$1" in
+        -c|--conf)
+            conf=$(encode_base64 "$2"); shift 2 ;;
+        -s|--slangroom-contract)
+            slangroom_contract=$(encode_base64 "$2"); shift 2 ;;
+        -d|--data)
+            data=$(encode_json_base64 "$2"); shift 2 ;;
+        -k|--keys)
+            keys=$(encode_json_base64 "$2"); shift 2 ;;
+        -e|--extra)
+            extra=$(encode_json_base64 "$2"); shift 2 ;;
+        -x|--context)
+            context=$(encode_base64 "$2"); shift 2 ;;
+        -F|--filename)
+            conf=$(encode_base64 "${2}.conf")
+            slangroom_contract=$(encode_base64 "${2}.slang")
+            data=$(encode_json_base64 "${2}.data.json")
+            keys=$(encode_json_base64 "${2}.keys.json")
+            extra=$(encode_json_base64 "${2}.extra.json")
+            context=$(encode_base64 "${2}.context")
+            shift 2 ;;
+        -h|--help)
+            print_help ;;
+        --)
+            shift; break ;;
+        *)
+            echo "Internal error!"; exit 1 ;;
+    esac
+done
+
+# if slangroom-contract is empty, read it from stdin
+if [ -z "$slangroom_contract" ]; then
+    slangroom_contract=$(encode_base64 -)
+fi
+
+# Print the encoded string
+echo -e "${conf}\n${slangroom_contract}\n${data}\n${keys}\n${extra}\n${context}"
\ No newline at end of file
diff --git a/test/test.bats b/test/e2e.bats
similarity index 71%
rename from test/test.bats
rename to test/e2e.bats
index 259601d..8a1bef2 100644
--- a/test/test.bats
+++ b/test/e2e.bats
@@ -34,4 +34,18 @@ setup() {
     run_slangroom_exec
     assert_output --partial "Do you know who greets you? 🥒"
     assert_success
+}
+
+@test "should fail on empty slangroom" {
+    load_fixture "broken_conf"
+    run_slangroom_exec
+    assert_output "Slangroom contract is empty"
+    assert_failure 1
+}
+
+@test "should fail on broken slangroom" {
+    load_fixture "broken_slangroom"
+    run_slangroom_exec
+    assert_output --partial "Invalid Zencode prefix 1: 'Gibberish'"
+    assert_failure 1
 }
\ No newline at end of file
diff --git a/test/fixtures/broken_conf.conf b/test/fixtures/broken_conf.conf
new file mode 100644
index 0000000..d68664b
--- /dev/null
+++ b/test/fixtures/broken_conf.conf
@@ -0,0 +1,6 @@
+aosijoaij
+
+
+
+
+
diff --git a/test/fixtures/broken_slangroom.slang b/test/fixtures/broken_slangroom.slang
new file mode 100644
index 0000000..c803eb1
--- /dev/null
+++ b/test/fixtures/broken_slangroom.slang
@@ -0,0 +1 @@
+Gibberish
\ No newline at end of file
diff --git a/test/fixtures/simple_slangroom.slang b/test/fixtures/simple_slangroom.slang
index e9656f2..5f84eed 100644
--- a/test/fixtures/simple_slangroom.slang
+++ b/test/fixtures/simple_slangroom.slang
@@ -1,4 +1,4 @@
 Rule unknown ignore
 Given I fetch the local timestamp in seconds and output into 'timestamp'
 Given I have a 'number' named 'timestamp'
-Then print the 'timestamp'
+Then print the 'timestamp'
\ No newline at end of file
diff --git a/test/test_helper/common-setup.bash b/test/test_helper/common-setup.bash
index 85acca2..aef6f5c 100644
--- a/test/test_helper/common-setup.bash
+++ b/test/test_helper/common-setup.bash
@@ -14,46 +14,12 @@ _common_setup() {
 }
 
 load_fixture() {
-    name=$1
-
-    conf_file="test/fixtures/${name}.conf"
-    zencode_file="test/fixtures/${name}.slang"
-    keys_file="test/fixtures/${name}.keys.json"
-    data_file="test/fixtures/${name}.data.json"
-    extra_file="test/fixtures/${name}.extra.json"
-    context_file="test/fixtures/${name}.context.json"
-
-    conf=""
-    zencode=""
-    keys=""
-    data=""
-    extra=""
-    context=""
-
-    if [ -f "$conf_file" ]; then
-        conf=$(cat "$conf_file")
-    fi
-    if [ -f "$zencode_file" ]; then
-        zencode=$(base64 -w 0 "$zencode_file")
-    fi
-    if [ -f "$keys_file" ]; then
-        keys=$(jq -c . "$keys_file" | base64 -w 0)
-    fi
-    if [ -f "$data_file" ]; then
-        data=$(jq -c . "$data_file" | base64 -w 0)
-    fi
-    if [ -f "$extra_file" ]; then
-        extra=$(jq -c . "$extra_file" | base64 -w 0)
-    fi
-    if [ -f "$context_file" ]; then
-        context=$(jq -c . "$context_file" | base64 -w 0)
-    fi
-
-    printf -v slang_input '%s\n%s\n%s\n%s\n%s\n%s' "$conf" "$zencode" "$keys" "$data" "$extra" "$context"
+    encoded=$(src/slexfe -F test/fixtures/$1)
+    printf -v slang_input '%s' "$encoded"
 }
 
 
 run_slangroom_exec() {
     bats_require_minimum_version 1.5.0
-    run -0 bats_pipe echo "$slang_input" \| ./slangroom-exec
+    run bats_pipe echo "$slang_input" \| ./slangroom-exec
 }
\ No newline at end of file
diff --git a/test/unit.test.ts b/test/unit.test.ts
new file mode 100644
index 0000000..d792c1b
--- /dev/null
+++ b/test/unit.test.ts
@@ -0,0 +1,14 @@
+import { expect, test } from "bun:test";
+import { encode } from "../src/lib";
+
+test("the encode() utility should work ok", () => {
+	const conf = "";
+	const slang = `Rule unknown ignore
+Given I fetch the local timestamp in seconds and output into 'timestamp'
+Given I have a 'number' named 'timestamp'
+Then print the 'timestamp'`;
+	const have = encode(conf, slang, "", "", "");
+	const want =
+		"\nUnVsZSB1bmtub3duIGlnbm9yZQpHaXZlbiBJIGZldGNoIHRoZSBsb2NhbCB0aW1lc3RhbXAgaW4gc2Vjb25kcyBhbmQgb3V0cHV0IGludG8gJ3RpbWVzdGFtcCcKR2l2ZW4gSSBoYXZlIGEgJ251bWJlcicgbmFtZWQgJ3RpbWVzdGFtcCcKVGhlbiBwcmludCB0aGUgJ3RpbWVzdGFtcCc=\n\n\n\n";
+	expect(have).toBe(want);
+});