NexusFeed MCP demonstrates solid definition quality with well-structured tool schemas, comprehensive descriptions, and clear parameter documentation. All 6 tools have explicit input schemas with typed parameters and descriptions. Tool names follow verb_noun conventions (ltl_get_*, abc_search_*, abc_lookup_*, abc_list_*). Descriptions are detailed (150-400 chars) and include context on when to use each tool, data freshness guarantees, and verifiability blocks. However, some parameters lack enum constraints where applicable (e.g., carrier codes, state codes), and output schemas are not formally documented in the source. Error handling guidance is present in descriptions but not structured as recovery patterns. One tool (ltl_get_accessorials) is marked [COMING SOON] and returns unavailability, which is acceptable but reduces practical utility.

• Add enum constraints to 'carriers' parameter: ['ODFL', 'SAIA', 'Estes', 'ABF', 'R+L', 'TForce'] and 'state' parameter: ['CA', 'TX', 'NY', 'FL']. This prevents hallucinated values and makes tool self-documenting.
• Document output schemas for all tools. Define the structure of _verifiability blocks, response fields, and pagination (if applicable) using JSON Schema or explicit type descriptions in tool documentation.
• Remove ltl_get_accessorials from the tool registry until it is implemented, or replace it with a placeholder tool that explicitly states 'Not yet available' without accepting parameters. This prevents wasted agent calls.
• For abc_search_licenses, either implement the city/county/zip/license_status filters server-side or remove them from the parameter list and document that filtering must be done client-side with clear examples.
• Add structured error responses with recovery guidance: 'If extraction_confidence < 0.90, retry in 24 hours when data is fresher' or 'If license not found, try abc_search_licenses with partial name or address.' Include error codes (e.g., CONFIDENCE_TOO_LOW, NOT_FOUND) for programmatic handling.