Three tools with clear verb-noun naming (get_token_price, get_market_snapshot, get_trending) and concise descriptions (34-72 chars). All tools have input schemas with type declarations. However, parameter descriptions are missing entirely, the 'id' parameter in two tools lacks any explanation of format, valid values, or fallback behavior. Output schemas are undocumented; LLMs cannot predict response structure. Error handling is minimal (no recovery guidance). No tool annotations (readOnlyHint, idempotentHint). Composition is sound (each tool does one thing), but parameter documentation falls short of production baseline (100% of A+ tools have param descriptions).

• Add parameter description to 'id' in get_token_price and get_market_snapshot: 'Token identifier: CoinGecko-style ID (e.g., bitcoin, ethereum) or Coinbase symbol (e.g., BTC, ETH). Falls back to uppercase symbol if ID not recognized.'
• Document output schemas for all three tools. Example for get_token_price: 'Returns {id: string, symbol: string, usd: number, change_24h_pct: number|null}.'
• Add error recovery hints: 'If token not found, call get_trending() to see available tokens.' Include this in tool description or error response.
• Add tool annotations to inputSchema: 'readOnlyHint: true' and 'idempotentHint: true' for all three tools to signal safety to agents.
• Extend get_trending with optional 'limit' parameter (default 8, max 50) and document the response structure to support future scaling.