ProxyClaw has 4 tools with complete input schemas and descriptions. Naming follows verb_noun convention (proxy_fetch, proxy_check_ip, proxy_list_countries, proxy_rotate). Descriptions are adequate (100-200 chars) and explain WHAT and WHEN. However, parameter descriptions lack constraint details (e.g., timeout accepts 1-120 but this is only in description text, not schema constraints). No output schemas documented, LLMs cannot predict response structure. No error handling guidance. Missing tool annotations (readOnlyHint). All tools are READ_ONLY but this is not declared in schema.

• Add JSON Schema constraints to parameters: timeout with minimum/maximum, country with pattern '^[A-Z]{2}$', city as string. Remove constraint text from descriptions and move to schema.
• Document output schemas for all tools. Example: proxy_fetch returns {status: number, body: string, headers: object}; proxy_check_ip returns {ip: string, country: string, city: string}.
• Add readOnlyHint: true to all 4 tool schemas to signal to agents that these are safe, idempotent reads.
• Enhance error messages. When API key is missing, return: 'IPLOOP_API_KEY not set. Get a free key at https://iploop.io/signup.html and set the environment variable.'
• Add parameter descriptions for proxy_list_countries output: 'Returns a list of 195+ country codes (e.g., US, DE, JP) available for routing.'