This MCP server exposes 2 blockchain tools with minimal documentation. Both tools have very short descriptions (under 20 characters when stripped of context), lack comprehensive parameter documentation, and provide no documented output schemas. The server appears to wrap SmileyCoin RPC calls with minimal abstraction. Tool names follow a basic verb_noun pattern (getblock, getblockhash) but descriptions are severely underdeveloped. No evidence of error handling guidance, input validation documentation, or output schema definition. The codebase shown is primarily build infrastructure (Dockerfile, Makefiles, Python setup) with no explicit MCP server implementation visible, tool definitions appear inferred from RPC function names rather than explicitly registered.

• Expand tool descriptions to 50 - 200 characters, following the pattern: 'Fetches blockchain block data by hash. Returns block metadata including timestamp, transaction count, difficulty, and rewards. Use this to inspect historical blocks or validate chain integrity. Hashes must be valid hex strings (64 characters). Returns full block details by default; set verbose=false for compact format (hash, height, timestamp only).'
• Document the complete output schema for each tool. For getblock: {"hash": string, "height": integer, "timestamp": integer (Unix), "transactions": array of tx objects or count, "difficulty": number, "reward": number, ...}. For getblockhash: {"hash": string (64-char hex), "height": integer}.
• Add explicit constraints to parameters: 'hash (string): Valid block hash as 64-character lowercase hexadecimal. Required. Example format: abc123def456... (64 chars).' and 'index (integer): Block height, must be >= 0 and <= current chain height. Required.'
• Provide error guidance: 'If block not found, return {"error": "block_not_found", "message": "No block at height 999999999", "suggestion": "Use getblock with a known hash or try getblockhash with a lower height"}.'
• If verbose responses include >500 fields or deeply nested structures, implement response filtering. Return only: hash, height, timestamp, transaction_count, difficulty, next_block_hash, previous_block_hash. Move raw blockchain metadata behind an optional 'raw' flag.
• Add composition hints: 'After calling getblockhash to discover a block hash, pass that hash to getblock to fetch full block details.' This guides multi-step agent planning.