x402 Observatory
Every paid API in the public x402 directories, checked by LogicNodes: does it really answer with valid payment terms, how reliably, and how much USDC its payout address actually receives.
128,156paid endpoints listed
4,176providers
3,649 / 4,176live at last check / checked
$297,836USDC received on Base, 7 days
| # | Provider | Score | Now | Uptime 72h | Income 7d | Payers 7d | Endpoints | From |
|---|---|---|---|---|---|---|---|---|
| 1351 | eu-verify data.greeneris.io |
58.0 | live | 100% | $0.052 | 14 | 83 | $0.001 |
| 1352 | eu-verify x402-datashop-production.up.railway.app |
58.0 | live | 100% | $0.052 | 14 | 10 | $0.001 |
| 1353 | api.aurenic.org api.aurenic.org |
58.0 | live | 100% | $0.037 | 14 | 17 | $0.001 |
| 1354 | openworker.etips.me openworker.etips.me |
57.9 | live | 100% | $3.21 | 2 | 13 | $0.01 |
| 1355 | Word of the day flat-rate-llm.kikoribera03.workers.dev |
57.9 | live | 100% | $0.465 | 9 | 74 | $0.005 |
| 1356 | fal.x402.paysponge.com fal.x402.paysponge.com |
57.9 | live | 100% | shared | 9 | 8 | $0.01 |
| 1357 | freepik.x402.paysponge.com freepik.x402.paysponge.com |
57.9 | live | 100% | shared | 9 | 2 | $0.00 |
| 1358 | rentcast.x402.paysponge.com rentcast.x402.paysponge.com |
57.9 | live | 100% | shared | 9 | 8 | $0.01 |
| 1359 | screenshotone.x402.paysponge.com screenshotone.x402.paysponge.com |
57.9 | live | 100% | shared | 9 | 2 | $0.02 |
| 1360 | tripadvisor.x402.paysponge.com tripadvisor.x402.paysponge.com |
57.9 | live | 100% | shared | 9 | 5 | $0.01 |
| 1361 | wolframalpha.x402.paysponge.com wolframalpha.x402.paysponge.com |
57.9 | live | 100% | shared | 9 | 3 | $0.01 |
| 1362 | Webpage to Text Scraper www.x402financialdata.com |
57.9 | live | 100% | $0.354104 | 10 | 19 | $0.005 |
| 1363 | US Weekly Jobless Claims x402-stock-indicators.vercel.app |
57.9 | live | 100% | $0.354104 | 10 | 9 | $0.005 |
| 1364 | ASN Lookup asn-lookup.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1365 | BIMI Checker bimi-checker.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1366 | CORS Header Checker cors-header-checker.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1367 | US CPI Data & Inflation Report cpi-report-us.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1368 | Curl HTTP Request curl-http-request.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1369 | Bulk DMARC Record Lookup dmarc-lookup.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1370 | dns-lookup.x402.paysponge.com dns-lookup.x402.paysponge.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1371 | DNS & WHOIS Lookup dns-whois-lookup.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1372 | domain-age-checker.underscoredone.com domain-age-checker.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1373 | Domain Availability Checker domain-availability-checker.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1374 | Email Verifier & Validator email-verifier.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1375 | ENS Resolver ens-resolver.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1376 | Hacker News Data hackernews-data.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1377 | Hashing, HMAC & Checksum Suite hash-hmac.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1378 | HTTP Header Checker http-header-checker.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1379 | http-status-checker.underscoredone.com http-status-checker.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1380 | JSON Validate, Repair, Convert, json-suite.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1381 | Leetspeak Translator leetspeak-translator.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1382 | Mortgage & Loan Amortization Cal mortgage-amortization.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1383 | TCP Port Scanner port-scanner.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1384 | qr-code-generator.underscoredone.com qr-code-generator.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1385 | SEO Data Extractor seo-data-extractor.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1386 | Shopify AI Rank Checker shopify-ai-rank-checker.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1387 | Sitemap URL Extractor sitemap-url-extractor.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1388 | underscoredone.com underscoredone.com |
57.9 | live | 100% | shared | 10 | 2 | $0.01 |
| 1389 | url-extractor.x402.paysponge.com url-extractor.x402.paysponge.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1390 | URL Uptime Checker url-uptime-checker.underscoredone.com |
57.9 | live | 100% | shared | 10 | 1 | $0.01 |
| 1391 | agent-treats-production.up.railway.app agent-treats-production.up.railway.app |
57.9 | live | 100% | $0.14 | 12 | 9 | $0.001 |
| 1392 | banking-compliance-production.up.railway.app banking-compliance-production.up.railway.app |
57.9 | live | 100% | $0.14 | 12 | 1 | $0.003 |
| 1393 | defi-signals.org defi-signals.org |
57.9 | live | 100% | $0.074 | 13 | 2 | $0.002 |
| 1394 | x402-defi-signals.onrender.com x402-defi-signals.onrender.com |
57.9 | live | 100% | $0.074 | 13 | 2 | $0.002 |
| 1395 | x402.ggez.my.id x402.ggez.my.id |
57.8 | live | 100% | $2.19 | 3 | 1 | $0.01 |
| 1396 | check-sanctions api.firstmention.uk |
57.8 | live | 100% | $0.57 | 8 | 27 | $0.01 |
| 1397 | gate402 gate402.app |
57.8 | live | 100% | $0.319 | 10 | 3 | $0.002 |
| 1398 | nodeproxy nodeproxy-production.up.railway.app |
57.8 | live | 100% | $0.319 | 10 | 1 | $0.001 |
| 1399 | modelprices.xyz modelprices.xyz |
57.8 | live | 100% | $0.283 | 10 | 45 | $0.003 |
| 1400 | Wallet Security Report (premium) automaton-tx-explainer.vercel.app |
57.8 | live | 100% | $0.215 | 11 | 41 | $0.005 |
For agents: call
x402_service_search over MCP (https://logicnodes.io/mcp/v2) or POST https://logicnodes.io/v1/tools/x402_service_search {"query":"weather"} to get the best live endpoint with an example input. For sellers: claim your listing, add the badge, or get alerts when your API stops answering (x402_monitor_create, $5 for 30 days). JSON: /v1/observatory/providers.Score: 0-100: 50 x share of checks in the last 72 h that returned valid x402 payment terms + 30 x min(1, log10(1 + USDC received in 7 days) / 4) + 20 x min(1, log10(1 + distinct payers in 7 days) / 3). A provider never checked scores on income only; income is all USDC received by its payout address on Base, whatever the source. Directories read 10 h ago. LogicNodes does not run these services or take a cut.