[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"glossary-function-schema::en":3,"gloss-cluster-function-schema::en":17,"gloss-next-function-schema::en":9},{"slug":4,"category":5,"name":6,"definition":7,"meta_desc":8,"faq":9,"schema_markup":9,"related":10},"function-schema","integration","Function Schema","A function schema is the machine-readable description of a tool: its name, what it does, and a JSON Schema for its parameters, including which are required and what values are allowed. It is what a model reads before deciding whether and how to call something.\n\nIt does two jobs at once, which is why it is worth writing carefully. It is documentation aimed at a reader that cannot ask clarifying questions, and it is a validation contract your own code can enforce before executing anything. Enums beat free-text strings, required fields beat optional ones with defaults, and a parameter that can only sensibly take three values should say so in the schema rather than in the description.\n\nThe common failure is a schema that is technically valid and semantically vague. \"query: string\" gives the model no idea what a good query looks like; \"query: string — a full-text search over invoice line items, e.g. 'unpaid invoices from March'\" produces calls you can actually serve.\n\nVersion schemas the way you version an API. A field that changes meaning silently breaks every prompt that learned the old meaning.","A function schema is the JSON contract that tells a model what a tool takes — the same document constrains the call and validates it.",null,[11,14],{"slug":12,"name":13},"api","API",{"slug":15,"name":16},"structured-output","Structured Output",[18,22,25,28,31,35,38,41,44,47,50,53],{"slug":19,"category":5,"name":20,"updated_at":21},"backend-for-frontend","Backend for Frontend (BFF)","2026-08-24T02:46:38+00:00",{"slug":23,"category":5,"name":24,"updated_at":21},"concurrency-limit","Concurrency Limit",{"slug":26,"category":5,"name":27,"updated_at":21},"event-ordering","Event Ordering",{"slug":29,"category":5,"name":30,"updated_at":21},"field-mapping","Field Mapping",{"slug":32,"category":5,"name":33,"updated_at":34},"grpc","gRPC","2026-08-24T02:46:37+00:00",{"slug":36,"category":5,"name":37,"updated_at":21},"integration-marketplace","Integration Marketplace",{"slug":39,"category":5,"name":40,"updated_at":21},"ip-allowlist","IP Allowlist",{"slug":42,"category":5,"name":43,"updated_at":21},"json-web-token","JSON Web Token (JWT)",{"slug":45,"category":5,"name":46,"updated_at":21},"mcp-server","MCP Server",{"slug":48,"category":5,"name":49,"updated_at":21},"mutual-tls","Mutual TLS (mTLS)",{"slug":51,"category":5,"name":52,"updated_at":21},"oauth-scopes","OAuth Scopes",{"slug":54,"category":5,"name":55,"updated_at":21},"openapi-specification","OpenAPI Specification"]