# x402 Merchant Chassis

Multi-service security & enrichment API for AI agents. 16 pay-per-call
endpoints settled via x402 (HTTP 402 + USDC on Base mainnet). No API keys,
no accounts — agents just hit a route, get a payment challenge, pay, and
receive JSON.

## Access

- Base URL: http://187.124.138.147:8402
- Discovery manifest: http://187.124.138.147:8402/.well-known/x402.json
- Agent card: http://187.124.138.147:8402/.well-known/ai-agent.json
- MCP server (SSE): http://187.124.138.147:8402/mcp/sse
- MCP manifest: http://187.124.138.147:8402/.well-known/mcp.json
- Live dashboard: http://187.124.138.147:8402/dashboard

## Payment

- Protocol: x402 v2
- Network: Base mainnet (eip155:8453)
- Asset: USDC
- Facilitator: Coinbase CDP platform/v2/x402
- Flow: 402 → payment challenge → settle USDC → retry → 200 + data
- Credits: send `X-Credit-Wallet: <address>` header after purchasing a pack

## Endpoints (all POST unless noted)

| Endpoint | Price | Description |
|----------|-------|-------------|
| /api/contract-risk | $0.05 | EVM contract risk screen (F-score, 7 flags) |
| /api/token-snapshot | $0.05 | ERC-20 snapshot on Base (symbol, decimals, contract) |
| /api/tx-verify | $0.05 | Verify a Base transaction (status, confirmations) |
| /enrich/domain | $0.05 | DNS bundle + IP geolocation |
| /enrich/ip | $0.01 | IP → country/city/ISP/ASN |
| /tool/whois | $0.10 | Structured WHOIS registration data |
| /threatintel/cert-search | $0.25 | Cert Transparency brand hunt (phishing) |
| /agent/osint-recon | $0.25 | Full domain/IP recon (WHOIS+DNS+Geo+Threat) |
| /agent/code-audit | $0.25 | Automated Solidity audit (8 patterns) |
| GET /content/contract-risk-methodology | $0.50 | Method document |
| GET /eval/summary | $1.00 | Live benchmark feed |
| GET /eval/contract-risk | $1.00 | Scorer accuracy feed |

## Subscriptions

- $5.00 → 100 credits (5¢/query)
- $20.00 → 500 credits (4¢/query, 20% off)
- $50.00 → 1500 credits (3.3¢/query, 33% off)

## Alerts (recurring)

- $10/mo → 1 brand, 30-min checks
- $25/mo → 3 brands, 15-min checks
- $50/mo → 10 brands, 5-min checks

## MCP tools (10)

contract_risk_screen, token_snapshot, tx_verify, whois_lookup,
domain_enrichment, ip_geolocation, cert_threat_hunt, code_audit,
osint_recon, benchmark_summary