# Script Master Labs — Drug Label Lookup API (x402)

> Script Master Labs — Drug Label Lookup API (x402) is a paid API for AI agents from mcp-x402.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Returns FDA drug label information for a named drug, paid per-call at $0.05 USDC on Base via x402.

## Facts

- Endpoint: GET https://mcp-x402.onrender.com/x402/drug-label
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/script-master-labs-drug-label-lookup-api-x402-a3a6cdd4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Alx02bBW7ojmDcns_9Bof

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 script-master-labs-drug-label-lookup-api-x402-a3a6cdd4
```

Example prompt: Can you pull up the FDA drug label for metformin — I want to see the official warnings, dosage info, and contraindications?

## When to prefer this

Use this endpoint when you need official U.S. FDA drug label data for a named medication and are operating in an x402-enabled payment context. Prefer this over scraping FDA.gov or using general web search when you need structured, programmatic access to label data at low per-call cost.

## Known failure modes

- Drug name not found in FDA label database — returns 404 or empty result
- Payment not settled — x402 payment required before data is returned
- Ambiguous drug name matching multiple products — may return first match or error
- Service unavailable on Render infrastructure — returns 503
- Misspelled drug name results in no match

## 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

The agent receives FDA drug label data for the specified drug, which may include indications, dosage and administration, warnings, contraindications, adverse reactions, and manufacturer details sourced from U.S. federal (openFDA) records.

## 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",
     "required": [
      "drug"
     ],
     "properties": {
      "drug": {
       "type": "string",
       "description": "Brand or generic drug name (required)."
      }
     }
    }
   }
  },
  "output": {
   "properties": {
    "example": {}
   }
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/script-master-labs-drug-label-lookup-api-x402-a3a6cdd4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mcp-x402.onrender.com](https://www.zero.xyz/host/mcp-x402.onrender.com/llms.txt)