# Script Master Labs — Entity Compliance Lookup (x402)

> Script Master Labs — Entity Compliance Lookup (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).

Looks up U.S. federal entity compliance status by UEI or CAGE code, paid per-call in USDC via x402.

## Facts

- Endpoint: GET https://mcp-x402.onrender.com/x402/entity-compliance
- 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-entity-compliance-lookup-x402-149ed456
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vKtth-ZtNEEg4zoekObWx

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-entity-compliance-lookup-x402-149ed456
```

Example prompt: Can you check the federal compliance status for the entity with UEI W9KYL4GD8PE5 — I need to know if they're currently active and eligible for government contracts?

## When to prefer this

Use this endpoint when you need to verify whether a U.S. entity is compliant and eligible for federal contracts or grants, using their UEI or CAGE code. Prefer this over general business lookup APIs when the context is specifically federal procurement, SAM.gov registration, or contractor vetting. The pay-per-call x402 model makes it suitable for on-demand, low-volume compliance checks without a subscription.

## Known failure modes

- UEI or CAGE code not found in federal database — returns 404 or empty result
- Invalid or malformed UEI/CAGE format — returns validation error
- Payment not settled — x402 payment failure prevents data delivery
- Upstream federal data source unavailable — returns 503 or timeout
- Missing both UEI and CAGE — returns 400 bad request

## 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

Returns U.S. federal entity compliance data for the given UEI or CAGE code, including registration status, eligibility, and any exclusion or debarment flags sourced from federal procurement databases.

## 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": [],
     "properties": {
      "uei": {
       "type": "string",
       "description": "SAM.gov UEI (12-char alphanumeric). Preferred."
      },
      "cage": {
       "type": "string",
       "description": "CAGE code (5-char). Alternative to UEI."
      }
     }
    }
   }
  },
  "output": {
   "properties": {
    "example": {}
   }
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/script-master-labs-entity-compliance-lookup-x402-149ed456/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)