fix: Fixed "oneOf" toolChoice for google language model (#5834)

timurrakhimzhan · Timur R · web-flow · commit 59760c1d10b7 · 2025-12-10T17:01:59.000-05:00
Co-authored-by: Timur R &lt;timur.rakhimzhan@gmail.com&gt;
diff --git a/.changeset/eight-ears-sink.md b/.changeset/eight-ears-sink.md
@@ -0,0 +1,5 @@
+---
+"@effect/ai-google": patch
+---
+
+Fixed "oneOf" toolChoice for google language model
diff --git a/packages/ai/google/src/GoogleLanguageModel.ts b/packages/ai/google/src/GoogleLanguageModel.ts
@@ -945,7 +945,7 @@ const prepareTools: (options: LanguageModel.ProviderOptions, config: Config.Serv
     toolConfig = {
       functionCallingConfig: {
         mode: options.toolChoice.mode === "auto" ? "AUTO" : "ANY",
-        allowedFunctionNames: Array.from(allowedTools)
+        allowedFunctionNames: options.toolChoice.mode === "auto" ? undefined : Array.from(allowedTools)
       }
     }
   }

-Original file line number
+Diff line change
@@ @@ -0,0 +1,5 @@ @@
 +---
 +"@effect/ai-google": patch
 +---
++
 +Fixed "oneOf" toolChoice for google language model
Original file line number	Diff line number	Diff line change
`@@ -945,7 +945,7 @@ const prepareTools: (options: LanguageModel.ProviderOptions, config: Config.Serv`
`945`	`945`	`toolConfig = {`
`946`	`946`	`functionCallingConfig: {`
`947`	`947`	`mode: options.toolChoice.mode === "auto" ? "AUTO" : "ANY",`
`948`		`- allowedFunctionNames: Array.from(allowedTools)`
	`948`	`+ allowedFunctionNames: options.toolChoice.mode === "auto" ? undefined : Array.from(allowedTools)`
`949`	`949`	`}`
`950`	`950`	`}`
`951`	`951`	`}`