# ScriptMasterLabs FDA Warnings Lookup

> ScriptMasterLabs FDA Warnings Lookup is a paid API for AI agents from mcp-x402-discovery.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Retrieves FDA warning letters and enforcement actions filtered by company or product name

## Facts

- Endpoint: GET https://mcp-x402-discovery.onrender.com/x402/fda-warnings
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/scriptmasterlabs-fda-warnings-lookup-d26d480f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dhPa_H0ZNvxwFYGl33ljW

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 scriptmasterlabs-fda-warnings-lookup-d26d480f
```

Example prompt: Can you pull up any FDA warning letters for Johnson & Johnson related to their Tylenol products — show me up to 10 results?

## When to prefer this

Use this endpoint when you need to quickly look up FDA warning letter history for a specific company or product without building your own FDA data pipeline. It is ideal for compliance checks, supplier vetting, pharmaceutical due diligence, and regulatory research at $0.001 per call — cheaper than most compliance data subscriptions. Prefer this over building raw FDA API queries when you want a simple pay-per-call lookup with no subscription commitment.

## Known failure modes

- 402 Payment Required — must pay via x402 USDC on Base or provide valid API key
- No results returned if company or product name does not match FDA records
- Limit parameter out of range (must be 1–25) causes validation error
- Empty or missing query parameters return default results or an error
- Service unavailable if hosted Render instance is cold-starting

## How this service works

Pay-per-call crypto, RWA, federal, SEC, Section 8/HUD housing, and compliance APIs via x402. Primary: USDC on Base (eip155:8453). Also accepts Global Dollar (USDG) on Robinhood Chain (eip155:4663) via sovereign X-PAYMENT-TX. Hyphen routes only (e.g. /x402/gas-tracker, /x402/pha-lookup, /x402/sec-8k). MARKETPLACE REVIEW: use free /x402/playground/* (no key, no payment). Production /x402/* returns 402 unless paid via x402 or X-Api-Market-Key / X-API-Key from seller dashboard.

## Output

A list of FDA warning letters and enforcement records matching the queried company or product name, up to the specified limit (1–25). Each record typically includes details about the enforcement action, the company or product involved, and relevant compliance information from the FDA.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "limit": {
       "type": "integer",
       "default": 10,
       "maximum": 25,
       "minimum": 1
      },
      "company": {
       "type": "string",
       "description": "Company or issuer name."
      },
      "product": {
       "type": "string",
       "description": "Product, drug, or device name."
      }
     }
    }
   }
  },
  "output": {
   "properties": {
    "example": {}
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "example": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/scriptmasterlabs-fda-warnings-lookup-d26d480f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mcp-x402-discovery.onrender.com](https://www.zero.xyz/host/mcp-x402-discovery.onrender.com/llms.txt)