Critical gaps across naming, descriptions, and schemas. Tool names lack action verbs (domain_to_subdomains, ipv4_to_geo are transformation names, not imperative actions). Descriptions are in German and extremely brief (10-30 chars), violating the 10-1024 char guideline and providing minimal LLM guidance. Input schemas are minimal: only a single 'value' parameter with basic string type, no enums, ranges, or validation hints. No output schemas documented. Error handling absent, no recovery guidance or categorization. The dynamically generated tools (via _make_tool) have inferred definitions not explicitly visible in registration, capping their scores at 50. list_transforms, get_graph, and clear_graph are better-defined but still lack output schema documentation.

• Rename tools to imperative action verbs: resolve_domain_subdomains, lookup_ipv4_address, query_mx_records, query_ns_records, query_txt_records, lookup_ip_geolocation, fetch_gravatar_profile, reverse_lookup_hostname, check_email_breaches. This matches LLM verb-noun parsing and clarifies intent.
• Expand descriptions to 100-200 chars in English. Example: 'Resolve all subdomains for a domain using Certificate Transparency logs (crt.sh). Returns a list of discovered subdomains. Use this to map the attack surface of a target domain.' Include WHAT, WHEN, and WHAT IT RETURNS.
• Add output schemas documenting the structure of results. Example for resolve_domain_subdomains: {type: 'object', properties: {subdomains: {type: 'array', items: {type: 'string'}}, count: {type: 'integer'}, source: {type: 'string'}}}. This enables LLM planning.
• Add input validation and error handling. Validate domain format (regex), IP format (IPv4 dotted-quad), email format (RFC 5322). Return structured errors: {error: 'invalid_domain', message: 'Domain must be a valid FQDN', suggestion: 'Did you mean example.com?'}.
• Document API rate limits and timeout behavior. Add descriptions like 'Rate limited to 10 requests/minute. Timeout: 30s. Retryable on 429/timeout.' This guides agent retry logic and prevents runaway loops.