This MCP server exposes a single dynamically-generated tool ('dynamic_graphql_operations') whose definition is inferred from GraphQL operation files rather than explicitly declared in code. The tool has NO description in the source code (tool/tools.go shows Description: ""), making it impossible for LLMs to understand when or why to select it. The InputSchema is extracted programmatically from GraphQL variables but not validated or documented. Tool annotations (readOnlyHint, destructiveHint, idempotentHint) are present and correctly set based on operation type, but this does not offset the absence of descriptive metadata. The server does not handle error responses beyond basic error messages, and there is no pagination or output schema documentation. The tool name 'dynamic_graphql_operations' is generic and does not follow verb_noun convention (e.g., 'execute_graphql_query', 'run_graphql_operation'). Overall, this server prioritizes GraphQL introspection and dynamic loading over user-facing definition quality.

• Add a meaningful tool description in tool/tools.go. Example: 'Execute any registered GraphQL query or mutation from your operations library. Pass the operation name and variables. Queries are read-only; mutations may modify data. Use get_operation_list first to discover available operations.'
• Rename the tool to 'execute_graphql_operation' to follow verb_noun convention and clarify intent
• Document the InputSchema returned from ExtractInputSchema(), include per-parameter descriptions, types, and format constraints extracted from GraphQL variable definitions
• Add an output schema section to the tool description explaining what fields the GraphQL result contains and how to interpret them
• Implement pagination support: accept 'limit' and 'offset' parameters (or cursor-based pagination if the GraphQL schema supports it), enforce a max result size (e.g. 100 items), and return a total_count or has_more indicator
• Enhance error responses with recovery guidance. Instead of 'Error executing tool graphql_operations: connection refused', return 'GraphQL endpoint unreachable (connection refused). Verify the endpoint URL is correct and the service is running. Retry in 5 seconds or check service status.'
• Add a separate tool 'list_graphql_operations' that returns available operation names and brief descriptions (inferred from GraphQL operation comments if available), enabling LLMs to discover operations before calling execute_graphql_operation
• Validate input parameters against the GraphQL schema before executing, and return a clear error message if a required variable is missing or has the wrong type