{ "type": "object", "properties": { "signed_url": { "type": "string", "description": "The signed url associated with this record." }, "expires_at": { "type": "string", "description": "The expires at associated with this record." } }, "required": [ "signed_url", "expires_at" ], "additionalProperties": false, "description": "Structured signed url output schema for MCP tools.", "$schema": "http://json-schema.org/draft-07/schema#"}