fda_clinical_result_letters

Active

declared in 0.1.0

Search FDA Complete Response Letters (CRLs) — formal refusal-to-approve decisions on drug and biologics applications. Filter by company name (fuzzy match), application number (e.g., 'NDA 204017'), or letter type. CRLs are significant regulatory events indicating application deficiencies. Related: fda_search_drugs (drug application data including approval status).

Parameters schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "limit": {
      "type": "integer",
      "default": 100,
      "maximum": 500,
      "minimum": 1,
      "description": "Max results to return (1-500)"
    },
    "offset": {
      "type": "integer",
      "default": 0,
      "maximum": 9007199254740991,
      "minimum": 0,
      "description": "Result offset for pagination"
    },
    "letter_type": {
      "type": "string",
      "maxLength": 500,
      "description": "Letter type filter (e.g. 'COMPLETE RESPONSE')"
    },
    "company_name": {
      "type": "string",
      "maxLength": 500,
      "description": "Company name (fuzzy match)"
    },
    "application_number": {
      "type": "string",
      "maxLength": 500,
      "description": "Application number (searches array, e.g. 'NDA 204017')"
    }
  }
}

What this tool wraps· 0 endpoints

min confidence0.70 0.50

No endpoints wrapped at confidence ≥ 0.50.

Parent server

FDA Data MCP

https://github.com/medley/fda-data

1/7 registries

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