# Google gemini-3-api helper API response error

**URL:** https://meta.discourse.org/t/google-gemini-3-api-helper-api-response-error/389019
**Category:** Bug
**Tags:** ai, ai-bot
**Created:** [November 19, 2025, 1:48pm UTC](https://meta.discourse.org/t/google-gemini-3-api-helper-api-response-error/389019 "2025-11-19T13:48:08Z")
**Posts on this page:** 1
**Showing post:** 1

<div class="post-metadata">

### Author: ![honeymoose](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/honeymoose/32/198718_2.png) [@honeymoose](https://meta.discourse.org/u/honeymoose)
#### Post date: [November 19, 2025, 1:48pm UTC](https://meta.discourse.org/t/google-gemini-3-api-helper-api-response-error/389019/1 "2025-11-19T13:48:08Z")

</div>

Try to test gemini-3-api.

Got error when try to use Helper.

```plaintext
{
“error”: {
“code”: 400,
“message”: “Function call is missing a thought_signature in functionCall parts. This is required for tools to work correctly, and missing thought_signature may lead to degraded model performance. Additional data, function call default_api:search , position 2. please refer to https://ai.google.dev/gemini-api/docs/thought-signatures for more details.”,
“status”: “INVALID_ARGUMENT”
}
}

```

## Creative OK

 ![4b92c5c24fec3938db0fba34d7ffc6396ff275f0](https://global.discourse-cdn.com/meta/original/4X/4/b/9/4b92c5c24fec3938db0fba34d7ffc6396ff275f0.png)  
 ![919a0179bc271708383b1189825395c3efc087bb](https://global.discourse-cdn.com/meta/original/4X/9/1/9/919a0179bc271708383b1189825395c3efc087bb.jpeg)  
Model URL for gemini - 3 is: `https://generativelanguage.googleapis.com/v1beta/models/gemini-3-pro-preview`

Any suggestion?

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