GHCP-MEM defines 16 tools with consistent naming (verb_noun pattern: ghcpMem_search, ghcpMem_get, etc.) and reasonable descriptions (avg ~80 chars). All tools have input schemas with typed parameters and descriptions. However, output schemas are not documented, LLMs cannot predict return structure. Error handling is absent; no guidance on retryability, user-fixable vs fatal errors, or recovery paths. Parameter descriptions lack constraints (e.g., 'limit' has no min/max stated in schema). No tool annotations (readOnlyHint, destructiveHint) despite clear risk levels (READ_ONLY, WRITE, DESTRUCTIVE). Composition is sound, each tool has one responsibility, but chaining IDs are not guaranteed in responses.

• Add output schemas to all 16 tools. Document the structure of returned sessions, snippets, graphs, etc. Include field types, required fields, and examples. This enables LLMs to chain tools correctly.
• Implement error handling with recovery guidance. For each tool, define error cases (not found, invalid input, permission denied) and suggest next steps. E.g., ghcpMem_get: 'Session not found. Try ghcpMem_search() with a keyword.'
• Add tool annotations to the MCP server registration. Mark ghcpMem_search, ghcpMem_recent, etc. with readOnlyHint=true. Mark ghcpMem_delete, ghcpMem_correct with destructiveHint=true. Mark idempotent tools with idempotentHint=true.
• Enforce parameter constraints in JSON Schema. Add 'minimum', 'maximum', 'minLength', 'maxLength' to numeric and string parameters. E.g., limit: {type: 'number', minimum: 1, maximum: 25}.
• Add a confirmation step for destructive operations. Implement ghcpMem_delete_confirm(id, reason) that returns a confirmation token, then ghcpMem_delete_execute(token) that performs the deletion. Or return a 'confirm_required' error with a confirmation URL.