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FDA Warning Letters Feed
x402
FDA Warning Letters Feed is a paid API for AI agents from api.companyrecords-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-24).
Returns the latest FDA warning letters from the FDA listing page, including company name, issuing center, violation subject, and issue date with links.
Price / call$0.002
Success—
StatusUnknown
How this service works
Pay-per-call company registry, government, legal and B2B data tools for AI agents, from official registers and public sources. Payment: x402, USDC on Base, Solana, Arc, Polygon, Arbitrum, Monad, World Chain, Optimism, Avalanche, Celo or Stellar, or RLUSD/XRP on the XRP Ledger. No signup, no API key; a failed call is not charged.
Output
A JSON object containing a total count, the FDA source URL, a checkedAt timestamp, and an array of warning letter records each with: company name, issuing FDA center or program, violation subject category, issue date (YYYY-MM-DD), and a direct URL to the letter on FDA.gov. Returns the first listing page only (up to 20 results); does not include full letter text or historical records.
Example use cases
Compliance check on a pharma supplier
“I need to know if Rohto Pharmaceutical has received any recent FDA warning letters — can you search for them by company name and show me what comes up?”
Regulatory news monitoring for food safety team
“Pull the 20 most recent FDA warning letters so I can review the latest enforcement actions and flag any that involve adulteration or misbranding violations.”
Due diligence on a dietary supplement brand
“We're evaluating a potential partnership with a supplement company — can you check the latest FDA warning letters and filter for any dietary supplement violations to see if they show up?”
Technical details
Endpoint
GEThttps://api.companyrecords-api.workers.dev/api/gov/fda-warning-letters?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need quick, structured access to the most recent FDA warning letters without scraping the FDA website yourself. Ideal for compliance monitoring, due diligence workflows, or regulatory news aggregation where only the latest enforcement actions matter. Not suitable when you need full letter text, historical data beyond the first listing page, or comprehensive enforcement history for a company.
Side effects
- FDA website unavailable or changed structure — endpoint may return stale or empty data
- Company name filter too short (under 2 chars) or too long (over 60 chars) returns validation error
- Limit parameter outside 1–20 range may be rejected or clamped
- No matching results for a specific company name filter — returns empty letters array
- Payment failure (x402) if USDC balance insufficient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"total": 10,
"source": "https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/compliance-actions-and-activities/warning-letters",
"letters": [
{
"url": "https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/rohto-pharmaceutical-co-ltd-733215-10142026",
"issued": "2026-10-14",
"company": "Rohto Pharmaceutical Co., Ltd.",
"subject": "CGMP/Finished Pharmaceuticals/Unapproved New Drug/Misbranded/Adulterated",
"issuingCenter": "Center for Drug Evaluation and Research (CDER)"
},
{
"url": "https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/psyched-wellness-ltd-730137-09292026",
"issued": "2026-09-29",
"company": "Psyched Wellness Ltd.",
"subject": "Dietary Supplement/Adulterated",
"issuingCenter": "Human Foods Program"
}
],
"checkedAt": "2026-10-23T09:37:06.239Z"
}
}Tags
x402
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