The server defines 8 tools with clear names and mostly good descriptions. All tools start with action verbs (fetch, list), which is strong. However, the schema quality is uneven: several tools have incomplete parameter descriptions, missing type constraints (enums), and output schemas are not explicitly documented. Error handling is present but generic. The server uses Zod for validation, which is positive, but the definitions themselves could be more precise for LLM consumption. Average tool score: 62/100.

• Document output schemas for all tools. Include field names, types, and descriptions. Example: fetchTokenPriceBySymbol should document { 'tokens': [{ 'symbol': string, 'price': number, 'currency': string }], 'timestamp': string }. This enables LLMs to extract the right fields and chain tools.
• Replace example values with formal constraints. Instead of 'e.g. "0x1234..."', use 'Ethereum address (0x-prefixed hex, 40 characters)' in the description and add a regex pattern to the schema. This prevents LLM hallucination of invalid inputs.
• Add enum constraints to categorical parameters. Define interval options as enum: ['1h', '4h', '1d', '1w', '1m']. Add category enum to fetchTransfers. Use zod.enum() to enforce at the schema level.
• Expand fetchTransfers parameter descriptions. Clarify: what are valid transfer categories? What sort orders are supported (asc/desc)? What is the format and purpose of pageKey? Add type and range constraints to maxCount.
• Add recovery guidance to error responses. When a network is unsupported, return 'Network "solana-mainnet" is not supported for this tool. Call listSupportedNetworks() to see available options.' When a token symbol is invalid, suggest 'Token "XYZ" not found. Try a major symbol like BTC, ETH, or call an endpoint with autocomplete.'
• Document pagination and result limits in all tool descriptions. Add explicit statements: 'Returns up to 100 results. Use before/after cursors for pagination.' Cap result sets at reasonable defaults (20-50 items) and offer pagination parameters.