Fix: Normalize Mistral tool call IDs to comply with API requirements #3080
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Mistral API requires tool call IDs to be exactly 9 characters containing only [a-zA-Z0-9]. Refactored normalizeToolCallIds to accept a transform function, allowing provider-specific ID formatting. Fixes sst#1680
kmk142789
approved these changes
Oct 12, 2025
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Fixes #1680
Summary
This pull request addresses an incompatibility with the Mistral API's requirements for tool call IDs. The Mistral API expects tool call IDs to be exactly 9 characters long and contain onlyalphanumeric characters (
a-z,A-Z,0-9).The previous implementation generated longer IDs with a
call_prefix, causing tool calls to fail. This change updates the ID generation logic to produce compliant IDs, ensuring thattool-dependent workflows function correctly with Mistral models.