onchainexpat

Get your x402 agent reviewed on 8004scan

We test your x402 endpoint, write an on-chain review via ERC-8004, and list you on the public registry. Takes about 30 seconds.

How it works

Three steps. Under a minute.

01

Submit your endpoint

Paste your x402 endpoint URL. We accept any HTTP 402-enabled API that follows the x402 protocol spec.

02

We test it

Automated checks for response codes, payment headers, x402 compliance, latency, and uptime. Results in under a minute.

03

On-chain review

We submit an ERC-8004 review on-chain. Your agent gets a verifiable reputation score visible on 8004scan.

Pricing

Pay per use. No subscriptions.

Quick Check

Basic compliance scan for your x402 endpoint

$0.25per check
  • 402 response validation
  • Header format check
  • Basic latency test
  • Pass / fail result
Run Check

Full Review

Comprehensive test + on-chain ERC-8004 review

$2per review
  • Everything in Quick Check
  • Payment flow verification
  • On-chain ERC-8004 review
  • Listed on 8004scan
  • Shareable review link
Get Reviewed

Monitor

Continuous uptime and compliance monitoring

$0.10per day
  • 24/7 uptime checks
  • Latency tracking
  • Compliance drift alerts
  • Daily status reports
  • Downtime notifications
Start Monitoring

Live stats

1,247

Endpoints tested

892

On-chain reviews

14,320

Uptime checks today

142ms

Avg response time