`fda_complete_response_letters`

Pack: openfda · Endpoint: https://gateway.pipeworx.io/openfda/mcp

Search FDA-disclosed Complete Response Letters for drug and biologic applications. Defaults to letter_type “COMPLETE RESPONSE”; optionally include other letter types in the same dataset. Returns the application’s current approval_status, letter metadata, an excerpt, and the official document URL.

Parameters

Name	Type	Required	Description
`company`	string	no	Sponsor/company name.
`application_number`	string	no	NDA/BLA application number.
`query`	string	no	Optional full-text term or raw openFDA CRL search expression.
`from_date`	string	no	Optional start date, YYYY-MM-DD.
`to_date`	string	no	Optional end date, YYYY-MM-DD.
`include_other_letter_types`	boolean	no	Include tentative approvals, rescissions, refusal-to-file letters, and other non-CRL records (default false).
`limit`	number	no	Number of letters (1-100, default 20).
`skip`	number	no	Pagination offset (default 0).

Example call

Arguments

{
  "company": "Acacia Pharma"
}

curl

curl -X POST https://gateway.pipeworx.io/openfda/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"fda_complete_response_letters","arguments":{"company":"Acacia Pharma"}}}'

TypeScript (@pipeworx/sdk)

import { Pipeworx } from '@pipeworx/sdk';
const pipeworx = new Pipeworx();

const result = await pipeworx.call('fda_complete_response_letters', {
  "company": "Acacia Pharma"
});

More examples

{
  "application_number": "NDA209510"
}

Connect

Add this to your MCP client config, or use one-click install buttons:

{
  "mcpServers": {
    "openfda": {
      "url": "https://gateway.pipeworx.io/openfda/mcp"
    }
  }
}

See Getting Started for client-specific install steps.

fda_complete_response_letters