This MCP server provides 19 debugging tools with explicit schemas and descriptions in server.ts. However, significant quality gaps limit its production readiness. Strengths: all tools have explicit input schemas with JSON Schema format, all tool names follow verb_noun patterns (debug, attach, exec, setBreakpoint, etc.), and descriptions are present for all tools. Critical weaknesses: (1) descriptions are uniformly short (10-25 chars) and lack depth needed for LLM decision-making, e.g., 'Start debugging a Go package' vs. 'Start interactive debugging of a Go package; creates a debug session and returns session_id. Used when you need to inspect code execution, set breakpoints, or examine runtime state'; (2) parameters lack descriptions in many cases (e.g., buildFlags in debug tool has a description, but many tools have minimal parameter docs); (3) no output schemas are documented, tools return responses but LLMs cannot infer the structure, breaking tool composition and limiting chaining; (4) no error handling guidance, failures give no recovery hints to agents; (5) no parameter validation constraints (min/max, patterns, enums where applicable); (6) no tool annotations (readOnlyHint, destructiveHint, idempotentHint) to guide agent safety reasoning. The resource mechanism (ListResourcesRequestSchema, ReadResourceRequestSchema) is implemented to expose debug sessions as resources, which is good practice. However, all 19 tools lack the depth, error guidance, and output schemas required for reliable agent planning. Average per-tool score: 48.

• Expand all tool descriptions to 50-150 characters, following the pattern: 'WHAT it does, WHEN to use it, what it returns.' Example: 'debug' → 'Start interactive debugging of a Go package in the specified directory. Creates a new debug session and returns session_id and port. Call this first to begin debugging; then use setBreakpoint, continue, and other control tools with the returned session_id.'
• Document output schemas for all tools. Use structured JSON or schema notation. Example for debug: '{type: object, properties: {session_id: {type: string}, port: {type: number}, status: {type: string, enum: [running, paused]}}, required: [session_id, port]}'
• Add error handling hints to each tool description. Example: 'If the session is not found, call debug() first to create a new session.' Pair with HTTP error responses that echo this guidance.
• Add tool annotations (readOnlyHint, destructiveHint, idempotentHint) to every tool. Mark debug, attach, test, setBreakpoint, etc. as destructiveHint: true (or false for readonly tools like variables, evaluate, trace). Example: {name: 'setBreakpoint', readOnlyHint: false, destructiveHint: true, ...}
• Document the lifecycle and ordering of session-based tools. Add to debug description: 'Always call debug/attach/exec/test FIRST to create a session. Other tools (setBreakpoint, continue, variables) require an active sessionId from a prior call.'
• Add validation and constraints to parameters. For setBreakpoint line: add 'A positive integer ≥1. If the file has fewer lines, an error is returned.' For trace regexp: 'A valid Go regex pattern; empty string matches all functions.'