# GovParse FDA Warning Letters Feed

> GovParse FDA Warning Letters Feed is a paid API for AI agents from api.govparse.io, paid per call via x402, $25/call, status unknown (last checked 2026-09-15).

Returns a cursor-paginated bulk feed of FDA Warning Letters, newest-first, with recipient firm, product area, issuing office, alleged violation subject, and close-out status.

## Facts

- Endpoint: GET https://api.govparse.io/v1/feeds/warning-letters
- Price: $25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/govparse-fda-warning-letters-feed-7590442b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AG-0TAILQWROd5WmYDTrb

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability govparse-fda-warning-letters-feed-7590442b
```

Example prompt: Pull the latest FDA warning letters for drug and device companies issued since January 1, 2025 that are still open — give me up to 500 rows showing the recipient firm, issuing office, and the alleged violation subject.

## When to prefer this

Use this endpoint when you need bulk, structured access to FDA Warning Letter data for compliance monitoring, competitive intelligence, or regulatory risk screening. Prefer this over manually parsing the FDA website when you need filterable, cursor-paginated rows across product areas. Ideal for building compliance dashboards, flagging regulated companies under active enforcement, or triggering alerts when new warning letters appear for monitored firms.

## Known failure modes

- Invalid product_area value returns 400 error
- Malformed cursor token causes pagination failure
- Invalid date format for 'since' parameter returns 400
- No results for highly specific filter combinations returns empty rows array
- Rate limiting or payment failure at $25 USDC per call returns 402 or 429

## How this service works

Which firms just received an FDA Warning Letter — an open compliance-gap and remediation clock? Bulk feed over the FDA Warning Letters index, newest-first by issue date: recipient firm, product area (drugs/devices/food/tobacco…), issuing office, alleged-violation subject, and the response / close-out clock. Flat rows, cursor-paginated up to 1000/page, filterable by product_area, subject, close-out state, or since. Observational records — an alleged violation, never an adjudication.

## Output

Returns flat JSON rows of FDA Warning Letter records, cursor-paginated up to 1000 per page, each containing recipient firm name, product area category, issuing FDA center or district office, alleged violation subject line, issue date, and open/closed close-out status. Includes a next_cursor token for pagination. Records represent alleged violations, not adjudications.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "properties": {
  "input": {
   "type": "object",
   "required": [],
   "properties": {
    "limit": {
     "type": "integer",
     "examples": [
      500
     ],
     "description": "Rows per page (default 500, cap 1000)."
    },
    "since": {
     "type": "string",
     "examples": [
      "2026-01-01"
     ],
     "description": "Only letters issued on or after this date (YYYY-MM-DD)."
    },
    "closed": {
     "type": "string",
     "examples": [
      "false"
     ],
     "description": "true = closed-out letters only; false = open (no close-out) only."
    },
    "cursor": {
     "type": "string",
     "examples": [
      "eyJkIjoiMjAyNi0wNC0yMSIsImsiOiIzNTQzYjE2NiJ9"
     ],
     "description": "Opaque page cursor — pass the previous page's next_cursor unchanged."
    },
    "office": {
     "type": "string",
     "examples": [
      "Center for Tobacco Products"
     ],
     "description": "Issuing FDA center / district office fragment (e.g. Center for Drug Evaluation and Research)."
    },
    "subject": {
     "type": "string",
     "examples": [
      "CGMP"
     ],
     "description": "Alleged-violation subject fragment (e.g. CGMP, Adulterated, Unapproved New Drug)."
    },
    "product_area": {
     "type": "string",
     "examples": [
      "drugs,devices"
     ],
     "description": "Product area(s), CSV: drugs | devices | biologics | food | dietary-supplement | cosmetics | tobacco | veterinary | other."
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/govparse-fda-warning-letters-feed-7590442b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.govparse.io](https://www.zero.xyz/host/api.govparse.io/llms.txt)