diff --git a/packages/geoprocessing/src/aws/GeoprocessingHandler.ts b/packages/geoprocessing/src/aws/GeoprocessingHandler.ts
index c521650819..3a063ae01c 100644
--- a/packages/geoprocessing/src/aws/GeoprocessingHandler.ts
+++ b/packages/geoprocessing/src/aws/GeoprocessingHandler.ts
@@ -435,20 +435,19 @@ export class GeoprocessingHandler<
   }
 
   /**
-   * Parses request event and returns GeoprocessingRequest.
+   * Parses event and returns GeoprocessingRequestModel object.
    */
   parseRequest<G>(event: APIGatewayProxyEvent): GeoprocessingRequestModel<G> {
     let request: GeoprocessingRequestModel<G>;
-    if ("geometry" in event) {
-      // POST request or aws console, so already in internal model form
+    if ("geometry" in event || "geometryUri" in event) {
+      // Is direct aws invocation, so should already be in internal model form
       request = event as GeoprocessingRequestModel<G>;
     } else if (
       event.queryStringParameters &&
       event.queryStringParameters["geometryUri"]
     ) {
-      // GET request with query string parameters to merge
-
-      // Extract extraParams from query string if necessary, though gateway lambda integration seems to do it for us
+      // Is GET request with query string parameters
+      // parse extraParams object from query string if necessary, though gateway lambda integration seems to do it for us
       const extraString = event.queryStringParameters["extraParams"];
       let extraParams: P | undefined;
       if (typeof extraString === "string") {
@@ -465,6 +464,7 @@ export class GeoprocessingHandler<
         extraParams,
       };
     } else if (event.body && typeof event.body === "string") {
+      // Is POST request
       request = JSON.parse(event.body);
     } else {
       throw new Error("Could not interpret incoming request");
diff --git a/packages/geoprocessing/src/datasources/seasketch.ts b/packages/geoprocessing/src/datasources/seasketch.ts
index 8be2c97017..f049f5f65b 100644
--- a/packages/geoprocessing/src/datasources/seasketch.ts
+++ b/packages/geoprocessing/src/datasources/seasketch.ts
@@ -5,8 +5,8 @@ import {
   Sketch,
   SketchCollection,
   Geometry,
+  GeoprocessingRequest,
 } from "../types/index.js";
-import { GeoprocessingRequest } from "../types/index.js";
 import isHostedOnLambda from "./isHostedOnLambda.js";
 // Seasketch client
 
diff --git a/packages/geoprocessing/src/types/service.ts b/packages/geoprocessing/src/types/service.ts
index 3e5acbd2c0..12f3f393c6 100644
--- a/packages/geoprocessing/src/types/service.ts
+++ b/packages/geoprocessing/src/types/service.ts
@@ -1,6 +1,17 @@
 import { JSONValue } from "./base.js";
-import { Polygon, LineString, Point, Feature } from "./geojson.js";
-import { Sketch, SketchProperties } from "./sketch.js";
+import {
+  Polygon,
+  MultiPolygon,
+  LineString,
+  Point,
+  Feature,
+} from "./geojson.js";
+import {
+  Sketch,
+  SketchCollection,
+  SketchGeometryTypes,
+  SketchProperties,
+} from "./sketch.js";
 
 interface ClientCode {
   uri: string; // public bundle location
@@ -99,13 +110,15 @@ export interface PreprocessingHandlerOptions {
 }
 
 /**
- * Represents geoprocessing request via HTTP method, fully packed
+ * Represents geoprocessing request via HTTP method, fully packed (stringified JSON) parameters
  */
-export interface GeoprocessingRequest<G = Polygon | LineString | Point> {
+export interface GeoprocessingRequest<
+  G = Polygon | MultiPolygon | LineString | Point,
+> {
   /** URL to fetch Sketch JSON */
   geometryUri?: string; // must be https
   /** Sketch JSON */
-  geometry?: Sketch<G>;
+  geometry?: Sketch<G> | SketchCollection<G>;
   /** Additional runtime parameters, as escaped JSON string */
   extraParams?: string;
   token?: string;
@@ -118,13 +131,13 @@ export interface GeoprocessingRequest<G = Polygon | LineString | Point> {
 export type GeoprocessingRequestParams = Record<string, JSONValue>;
 
 /**
- * Represents geoprocessing request internally, fully unpacked
+ * Represents geoprocessing request internally, fully unpacked parameters
  */
-export interface GeoprocessingRequestModel<G = Polygon | LineString | Point> {
+export interface GeoprocessingRequestModel<G = SketchGeometryTypes> {
   /** URL to fetch Sketch JSON */
   geometryUri?: string; // must be https
   /** Sketch JSON */
-  geometry?: Sketch<G>;
+  geometry?: Sketch<G> | SketchCollection<G>;
   /** Additional runtime parameters */
   extraParams?: GeoprocessingRequestParams;
   token?: string;