@ai-sdk/google - npm Package Compare versions

Comparing version 3.0.98 to 3.0.99

package.json

 {
   "name": "@ai-sdk/google",
-  "version": "3.0.98",
+  "version": "3.0.99",
   "license": "Apache-2.0",
@@ -5,0 +5,0 @@ "sideEffects": false,

src/convert-to-google-generative-ai-messages.ts

@@ -316,2 +316,4 @@ import {
 
+        let modelResponseHasSignedFunctionCall = false;
+
         contents.push({
@@ -379,14 +381,23 @@ role: 'model',
                       : undefined;
-
-                  // For Gemini 3, every replayed functionCall part must carry a
-                  // thoughtSignature or the API returns HTTP 400. If the upstream
-                  // serialization layer dropped the signature, inject the
-                  // documented sentinel so the request still succeeds.
+                  const isServerToolCall =
+                    serverToolCallId != null && serverToolType != null;
+                  const shouldSkipMissingSignatureMitigation =
+                    // Gemini 3 returns a single signature for a parallel
+                    // function-call response on the first standard function
+                    // call. Subsequent standard function calls in the same
+                    // model response legitimately have no signature.
+                    !isServerToolCall &&
+                    thoughtSignature == null &&
+                    modelResponseHasSignedFunctionCall;
                   const effectiveThoughtSignature =
                     thoughtSignature ??
-                    (isGemini3Model
+                    (isGemini3Model && !shouldSkipMissingSignatureMitigation
                       ? injectSkipSignature(part.toolName)
                       : undefined);
 
-                  if (serverToolCallId && serverToolType) {
+                  if (!isServerToolCall && thoughtSignature != null) {
+                    modelResponseHasSignedFunctionCall = true;
+                  }
+
+                  if (isServerToolCall) {
                     return {
@@ -393,0 +404,0 @@ toolCall: {

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Total package byte prevSize

3115578

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Lines of code

34078

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No dependency changes