Live, verified search for machine-payable (HTTP 402) APIs. Measured prices · uptime · on-chain trust. llms.txt · OpenAPI · MCP · Seller Leaderboard
Send a REAL physical letter — US First-Class, US Certified Mail (with optional electronic return receipt), or international — via Lob's Print & Mail network. This is an ACTION API, not a data lookup: paying causes a real letter to be printed and mailed. Flow: free quote -> paid send -> optional status poll. Pay-per-call via x402 (USDC on Base). No API keys, no accounts, no subscriptions.
Trust score 37/100 · Base URL https://mailpulse.theaslangroupllc.com
| Endpoint | Status | Price/call | Uptime 7d | Latency |
|---|---|---|---|---|
| mailpulse.theaslangroupllc.com/api/letters/{id} | alive | $0.005 | 100% | 99ms |
Send any HTTP request; the 402 challenge returns x402 payment terms (USDC on Base). Or ask your agent: search_x402("mailpulse api") via the Atlas MCP server.