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fc67416d08
* ♊ fix: Resolve Local JSON Pointer Refs & Sanitize Tool Search Schema for Gemini Gemini/Vertex agents fail when MCP tools are attached, in two ways: 1. MCP servers with OpenAPI-derived schemas can emit local JSON pointer refs (e.g. `#/properties/body/properties/start`). `resolveJsonSchemaRefs` only resolves `#/$defs` and `#/definitions` refs, so these survive into the request payload and Vertex rejects it with 400 'Invalid JSON payload received. Unknown name "$ref"'. Resolve any local `#/...` pointer against the schema root (RFC 6901 unescaping, cycle protection), and strip still-unresolvable `$ref` keys in `sanitizeGeminiSchema` as a safety net. 2. When deferred tools are enabled, the injected `tool_search` schema declares `mcp_server` as `oneOf: [string, string[]]`, which `zod_to_gemini_parameters` rejects ('Gemini cannot handle union types'). `buildToolClassification` now accepts the agent provider and collapses the union via `sanitizeGeminiSchema` for Google/Vertex only — the tool's runtime (`normalizeServerFilter`) already accepts both forms. Complements #13623, which sanitizes MCP tool schemas but not the injected tool_search definition, and did not cover non-$defs local pointers. Underlying converter limitation: langchain-ai/langchainjs#9691. * style: format tool search schema assignment * style: sort tool classification imports --------- Co-authored-by: Danny Avila <danny@librechat.ai> |
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