This is not an MCP server, it is a Python SDK for a third-party REST API (QianYuan). The four tools are thin wrappers around httpx calls with no MCP protocol implementation visible. Tool descriptions are present but generic (avg ~80 chars). Input schemas are inferred from function signatures, not explicitly registered. No output schemas documented. No error recovery guidance. No tool annotations. This submission appears to be a misclassification; it should be evaluated as a REST client library, not an MCP server.

• Implement MCP protocol: wrap this SDK in an MCP server that exposes these four tools via the MCP transport (HTTP+SSE or Streamable HTTP). Register tools with explicit JSON Schema input/output definitions.
• Document output schemas for all tools. E.g., register returns {id: string, token: string}; query_trust returns {entries: array, footprint: object}. Include these in tool definitions.
• Add error recovery guidance. Instead of raw QianYuanError, return structured errors with actionable next steps: 'Agent not found. Call register() to create a new identity.' or 'Rate limited. Retry after 60 seconds.'
• Move bearer_token to server-side configuration (environment variable or vault). Accept it via MCP initialization, not as a tool parameter. Prevents credential leakage in logs.
• Add parameter validation and enums. E.g., kind parameter in retrieve_result should be an enum (library, cache, etc.). Document constraints in descriptions.