fix: default tool call type to function for Mistral compatibility#744
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iBotPeaches merged 1 commit intoopenai-php:mainfrom Feb 25, 2026
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The Mistral API currently omits the `type` attribute in its tool call responses, which causes an `Undefined array key "type"` exception. This commit defaults the missing `type` to `'function'` (the standard supported type per OpenAI documentation) to prevent runtime errors and ensure broader compatibility with OpenAI-compatible APIs. Fixes openai-php#397
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Debated in my head - fine with defaulting this to function
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What:
Description:
The Mistral API currently omits the
typeattribute in its tool call responses, which causes anUndefined array key "type"exception. This commit defaults the missingtypeto'function'(the standard supported type per OpenAI documentation) to prevent runtime errors and ensure broader compatibility with OpenAI-compatible APIs.Related:
Fixes #397