fix: sync Gemini tool-call JSON and Messages container from Python any-llm

[cursor]

Sync with mozilla-ai/any-llm main through c1f167b (6 new commits since 909d26e). One PR for the applicable library changes.

Ported

• #1330: reject malformed Gemini tool-call arguments. Serialized arguments that are not valid JSON now raise InvalidRequestError instead of being wrapped as { arguments: "..." }. Empty strings and already-parsed objects still become {} / the object. Tool schemas with JSON Schema type unions ({"type": ["string", "null"]}) already go through parametersJsonSchema in this port, so the Python OpenAPI Schema.type enum path is not used. Vertex AI inherits the same conversion.
• #1329: add Messages container for continuing a previous top-level Anthropic code-execution container. Native Anthropic-family adapters forward it. The completions bridge rejects it with UnsupportedOperationError. Meta and Otari reject it with UnsupportedParameterError (Otari SDK 0.3.0 drops the field; Meta does not document it).

Skipped (not applicable)

• #1353: native xAI protobuf finish-reason mapping. This port's xAI is an OpenAI-compatible registry row and already passes finish reasons through.
• #1326: native xAI protobuf tool-call ID reconstruction. OpenAI-compatible xAI already preserves tool-call IDs.
• #1355: Python docstring default corrections. listBatches already takes optional limit.
• #1363: Python pre-commit pin bump.

Tracked source SHA is now c1f167bc0d24d6321e2e02a61cf4363ccb6c3246. oxfmt and oxlint were run after the changes.

  

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Note

Medium Risk
Gemini now throws on malformed tool-call JSON (behavior change for callers that relied on silent wrapping), and Messages container is a new request surface with provider-specific accept/reject rules.

Overview
Syncs the TypeScript port with Python any-llm at 2388f59 (patch changeset).

Gemini tool-call arguments: Serialized assistant tool function.arguments that are not valid JSON (strings, buffers) now fail at request build time with InvalidRequestError and a message naming the function, instead of silently wrapping bad input as { arguments: "..." }. Empty encoded args still become {}; valid JSON and plain objects are unchanged. Provider name is threaded through message/batch conversion for error attribution.

Messages container: Adds optional container on MessagesParams for continuing a prior Anthropic top-level code-execution container. Native Anthropic forwards it on messages.create. The default completions-backed messages() path rejects it with UnsupportedOperationError; Meta and Otari reject with UnsupportedParameterError. Docs and parity manifest/commit pins are updated; tests cover forwarding and rejection paths.

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Project	Deployment	Actions	Updated
any-llm-ts	Ready	Preview	Sep 5, 2026 3:33am UTC