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.
126,094paid endpoints listed
4,142providers
1,938 / 2,195live at last check / checked
$314,305USDC received on Base, 7 days
| # | Provider | Score | Now | Uptime 72h | Income 7d | Payers 7d | Endpoints | From |
|---|---|---|---|---|---|---|---|---|
| 201 | SiteCheck Company Records api.companyrecords-api.workers.dev |
68.0 | live | 100% | shared | 35 | 121 | $0.002 |
| 202 | SiteCheck Agent Intel & Dev api.fadeandco.workers.dev |
68.0 | live | 100% | shared | 35 | 135 | $0.002 |
| 203 | SiteCheck Health & Travel api.healthtravel-api.workers.dev |
68.0 | live | 100% | shared | 35 | 121 | $0.002 |
| 204 | SiteCheck Jobs & Property api.jobsproperty-api.workers.dev |
68.0 | live | 100% | shared | 35 | 112 | $0.002 |
| 205 | SiteCheck Shop & Social api.shopsocial-api.workers.dev |
68.0 | live | 100% | shared | 35 | 113 | $0.002 |
| 206 | SiteCheck api.sitecheck-api.workers.dev |
68.0 | live | 100% | shared | 35 | 225 | $0.002 |
| 207 | SiteCheck Trade & Energy api.tradeenergy-api.workers.dev |
68.0 | live | 100% | shared | 35 | 112 | $0.002 |
| 208 | SiteCheck Web Intel api.webintel-api.workers.dev |
68.0 | live | 100% | shared | 35 | 129 | $0.002 |
| 209 | Duo Data Utilities api.duoleads.com |
67.7 | live | 100% | shared | 11 | 33 | $0.05 |
| 210 | Perp Market Screener (All Coins) derivs.duoleads.com |
67.7 | live | 100% | shared | 11 | 10 | $0.003 |
| 211 | SEO Keyword Search Volume, CPC keywords.duoleads.com |
67.7 | live | 100% | shared | 11 | 6 | $0.03 |
| 212 | Mekler AI api.mekler.ai |
67.4 | live | 100% | shared | 12 | 40 | $0.002796 |
| 213 | ASIN402 asin402.com |
67.3 | live | 100% | $21.51 | 11 | 16 | $0.005 |
| 214 | Geo402 geo402.com |
67.3 | live | 100% | $21.51 | 11 | 3 | $0.004 |
| 215 | 21millionpixels.art 21millionpixels.art |
66.9 | live | 100% | $41.42 | 4 | 2 | $0.005 |
| 216 | Interzoid Data APIs api.interzoid.com |
66.9 | live | 100% | $17.34 | 12 | 52 | $0.01 |
| 217 | Interzoid Data Enrichment enrich-api.interzoid.com |
66.9 | live | 100% | $17.34 | 12 | 1 | $0.50 |
| 218 | api.glianalabs.com api.glianalabs.com |
66.9 | live | 100% | $11.90 | 18 | 46 | $0.002 |
| 219 | leftclaw.services leftclaw.services |
66.8 | live | 100% | $64.00 | 2 | 1 | $1.00 |
| 220 | mcp-x402.onrender.com mcp-x402.onrender.com |
66.2 | live | 100% | shared | 21 | 120 | $0.001 |
| 221 | MNEMOS by ScriptMasterLabs mnemos-agent.onrender.com |
66.2 | live | 100% | shared | 21 | 9 | $0.001 |
| 222 | apiv2.laevitas.ch apiv2.laevitas.ch |
66.0 | live | 100% | $15.10 | 10 | 5 | $0.10 |
| 223 | Onchain Risk Checks agent-data.centorprat.workers.dev |
65.8 | live | 100% | $8.41 | 18 | 87 | $0.003 |
| 224 | Web Search for AI Agents agent-search.centorprat.workers.dev |
65.8 | live | 100% | $8.41 | 18 | 18 | $0.004 |
| 225 | Web search results agent-data-tools.revmesh2074.workers.dev |
65.7 | live | 100% | $8.94 | 16 | 575 | $0.002 |
| 226 | Massive agent.massive.com |
65.7 | live | 100% | $6.69 | 22 | 21 | $0.01 |
| 227 | calibration-court.onrender.com calibration-court.onrender.com |
65.6 | live | 100% | shared | 20 | 2 | $0.01 |
| 228 | agent.halowerk.com agent.halowerk.com |
65.6 | live | 100% | shared | 25 | 15 | $0.003 |
| 229 | agent_mcp_discovery_repair agentreadiness.halowerk.com |
65.6 | live | 100% | shared | 25 | 100 | $0.001 |
| 230 | agri.halowerk.com agri.halowerk.com |
65.6 | live | 100% | shared | 25 | 10 | $0.002 |
| 231 | aialign.halowerk.com aialign.halowerk.com |
65.6 | live | 100% | shared | 25 | 9 | $0.003 |
| 232 | audio.halowerk.com audio.halowerk.com |
65.6 | live | 100% | shared | 25 | 2 | $0.004 |
| 233 | audit.halowerk.com audit.halowerk.com |
65.6 | live | 100% | shared | 25 | 1 | $0.05 |
| 234 | barriere.halowerk.com barriere.halowerk.com |
65.6 | live | 100% | shared | 25 | 3 | $0.001 |
| 235 | bau.halowerk.com bau.halowerk.com |
65.6 | live | 100% | shared | 25 | 1 | $0.001 |
| 236 | bio.halowerk.com bio.halowerk.com |
65.6 | live | 100% | shared | 25 | 10 | $0.003 |
| 237 | buero.halowerk.com buero.halowerk.com |
65.6 | live | 100% | shared | 25 | 27 | $0.002 |
| 238 | cms.halowerk.com cms.halowerk.com |
65.6 | live | 100% | shared | 25 | 3 | $0.001 |
| 239 | conversion.halowerk.com conversion.halowerk.com |
65.6 | live | 100% | shared | 25 | 3 | $0.001 |
| 240 | HALOWERK crawlspur crawlspur.halowerk.com |
65.6 | live | 100% | shared | 25 | 100 | $0.001 |
| 241 | HALOWERK creatorwerk creator.halowerk.com |
65.6 | live | 100% | shared | 25 | 10 | $0.002 |
| 242 | dao.halowerk.com dao.halowerk.com |
65.6 | live | 100% | shared | 25 | 3 | $0.001 |
| 243 | HALOWERK defiwerk defi.halowerk.com |
65.6 | live | 100% | shared | 25 | 1 | $0.008 |
| 244 | dep.halowerk.com dep.halowerk.com |
65.6 | live | 100% | shared | 25 | 9 | $0.003 |
| 245 | detect.halowerk.com detect.halowerk.com |
65.6 | live | 100% | shared | 25 | 30 | $0.002 |
| 246 | Domain Intel dns.halowerk.com |
65.6 | live | 100% | shared | 25 | 11 | $0.003 |
| 247 | HALOWERK Energy energy.halowerk.com |
65.6 | live | 100% | shared | 25 | 5 | $0.001 |
| 248 | ernte.halowerk.com ernte.halowerk.com |
65.6 | live | 100% | shared | 25 | 5 | $0.002 |
| 249 | fetchwerk Web Extraction fetch.halowerk.com |
65.6 | live | 100% | shared | 25 | 2 | $0.006 |
| 250 | fetchwerk Web Extraction fetch.netzhandwerker.de |
65.6 | live | 100% | shared | 25 | 1 | $0.008 |
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 13 h ago. LogicNodes does not run these services or take a cut.