diff --git a/frontend/src/lib/components/copilot/chat/app/core.ts b/frontend/src/lib/components/copilot/chat/app/core.ts
index 39a0e9ceae..ec305c51a4 100644
--- a/frontend/src/lib/components/copilot/chat/app/core.ts
+++ b/frontend/src/lib/components/copilot/chat/app/core.ts
@@ -237,7 +237,8 @@ const getSetBackendRunnableToolDef = memo(() =>
 	createToolDef(
 		getSetBackendRunnableSchema(),
 		'set_backend_runnable',
-		'Create or update a backend runnable. Use type "inline" for custom code, or reference existing workspace/hub scripts/flows. Returns lint diagnostics (errors and warnings).'
+		'Create or update a backend runnable. Use type "inline" for custom code, or reference existing workspace/hub scripts/flows. Returns lint diagnostics (errors and warnings).',
+		{ strict: false }
 	)
 )
 
@@ -294,7 +295,6 @@ const getListWorkspaceRunnablesSchema = memo(() =>
 		query: z.string().describe('The search query to find workspace scripts and flows'),
 		type: z
 			.enum(['all', 'scripts', 'flows'])
-			.optional()
 			.describe(
 				'Filter by type: "scripts" for scripts only, "flows" for flows only, "all" for both. Defaults to "all".'
 			)
diff --git a/frontend/src/lib/components/copilot/chat/shared.ts b/frontend/src/lib/components/copilot/chat/shared.ts
index 286197ecd0..ac92350a68 100644
--- a/frontend/src/lib/components/copilot/chat/shared.ts
+++ b/frontend/src/lib/components/copilot/chat/shared.ts
@@ -506,7 +506,8 @@ export interface ToolCallbacks {
 export function createToolDef(
 	zodSchema: z.ZodSchema,
 	name: string,
-	description: string
+	description: string,
+	{ strict = true }: { strict?: boolean } = {} // we sometimes have to set strict to false for open ai models to avoid issues with complex properties
 ): ChatCompletionFunctionTool {
 	// console.log('creating tool def for', name, zodSchema)
 	let parameters = z.toJSONSchema(zodSchema)
@@ -516,7 +517,7 @@ export function createToolDef(
 	return {
 		type: 'function',
 		function: {
-			strict: true,
+			strict,
 			name,
 			description,
 			parameters