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
3,376 / 3,838live at last check / checked
$296,101USDC received on Base, 7 days
| # | Provider | Score | Now | Uptime 72h | Income 7d | Payers 7d | Endpoints | From |
|---|---|---|---|---|---|---|---|---|
| 1201 | ca-cm-kg.ai ca-cm-kg.ai |
56.7 | live | 100% | shared | 7 | 1 | $0.01 |
| 1202 | ch-cm-kg.ai ch-cm-kg.ai |
56.7 | live | 100% | shared | 7 | 1 | $0.01 |
| 1203 | de-cm-kg.ai de-cm-kg.ai |
56.7 | live | 100% | shared | 7 | 1 | $0.01 |
| 1204 | familyofficeknowledgegraph.ai familyofficeknowledgegraph.ai |
56.7 | live | 100% | shared | 7 | 1 | $0.01 |
| 1205 | fr-cm-kg.ai fr-cm-kg.ai |
56.7 | live | 100% | shared | 7 | 1 | $0.01 |
| 1206 | gsc-x402.ai gsc-x402.ai |
56.7 | live | 100% | shared | 7 | 1 | $0.01 |
| 1207 | hk-cm-kg.ai hk-cm-kg.ai |
56.7 | live | 100% | shared | 7 | 1 | $0.01 |
| 1208 | jp-cm-kg.ai jp-cm-kg.ai |
56.7 | live | 100% | shared | 7 | 1 | $0.01 |
| 1209 | kr-cm-kg.ai kr-cm-kg.ai |
56.7 | live | 100% | shared | 7 | 1 | $0.01 |
| 1210 | kyp-model.ai kyp-model.ai |
56.7 | live | 100% | shared | 7 | 1 | $0.01 |
| 1211 | nl-cm-kg.ai nl-cm-kg.ai |
56.7 | live | 100% | shared | 7 | 1 | $0.01 |
| 1212 | sg-cm-kg.ai sg-cm-kg.ai |
56.7 | live | 100% | shared | 7 | 1 | $0.01 |
| 1213 | uk-cm-kg.ai uk-cm-kg.ai |
56.7 | live | 100% | shared | 7 | 1 | $0.01 |
| 1214 | us-cm-kg.ai us-cm-kg.ai |
56.7 | live | 100% | shared | 7 | 1 | $0.01 |
| 1215 | Agent Utility Suite x402-agent-api.onrender.com |
56.7 | live | 100% | $0.226 | 7 | 34 | $0.001 |
| 1216 | fee_estimate chainsscope.duckdns.org |
56.7 | live | 100% | $0.22 | 7 | 2 | $0.01 |
| 1217 | series concordancehq.duckdns.org |
56.7 | live | 100% | $0.22 | 7 | 4 | $0.01 |
| 1218 | payable.nsgoods.org payable.nsgoods.org |
56.7 | live | 100% | shared | 8 | 1 | $0.005 |
| 1219 | nsgoods Crypto Market Regime regime.nsgoods.org |
56.7 | live | 100% | shared | 8 | 1 | $0.01 |
| 1220 | Sanctions Screening by nsgoods sanctions.nsgoods.org |
56.7 | live | 100% | shared | 8 | 3 | $0.005 |
| 1221 | nsgoods AI Extractability Score schema.nsgoods.org |
56.7 | live | 100% | shared | 8 | 1 | $0.01 |
| 1222 | nsgoods Crypto Signals (Kraken) signals.nsgoods.org |
56.7 | live | 100% | shared | 8 | 6 | $0.005 |
| 1223 | nsgoods Plug-in Solar Legality solar.nsgoods.org |
56.7 | live | 100% | shared | 8 | 2 | $0.005 |
| 1224 | trust.nsgoods.org trust.nsgoods.org |
56.7 | live | 100% | shared | 8 | 2 | $0.005 |
| 1225 | nsgoods Solana Payment Check x402.nsgoods.org |
56.7 | live | 100% | shared | 8 | 2 | $0.01 |
| 1226 | AxonGate api.axongate.one |
56.7 | live | 100% | $0.101 | 8 | 9 | $0.002 |
| 1227 | web-production-8136ee.up.railway.app web-production-8136ee.up.railway.app |
56.7 | live | 100% | $0.101 | 8 | 1 | $0.02 |
| 1228 | contractlens-api.appin60.com contractlens-api.appin60.com |
56.7 | live | 100% | shared | 8 | 6 | $0.001 |
| 1229 | mailferret.appin60.com mailferret.appin60.com |
56.7 | live | 100% | shared | 8 | 4 | $0.003 |
| 1230 | pitcrew-api.appin60.com pitcrew-api.appin60.com |
56.7 | live | 100% | shared | 8 | 7 | $0.005 |
| 1231 | plainchain.appin60.com plainchain.appin60.com |
56.7 | live | 100% | shared | 8 | 6 | $0.001042 |
| 1232 | SubmitCheck submitcheck.appin60.com |
56.7 | live | 100% | shared | 8 | 4 | $0.002 |
| 1233 | Build Scotts Bluff Agent API buildscottsbluff.com |
56.7 | live | 100% | $0.023378 | 9 | 2 | $0.01 |
| 1234 | Ozmium Agent API ozmium.org |
56.7 | live | 100% | $0.023378 | 9 | 8 | $0.001 |
| 1235 | api.reloadpi.com api.reloadpi.com |
56.7 | live | 100% | $0.012 | 9 | 12 | $0.001 |
| 1236 | a2apay Task Memory Resume a2apay.io |
56.6 | live | 100% | $3.14 | 1 | 3 | $0.014 |
| 1237 | XH Agents Knowledge Base xhagents.xyz |
56.6 | live | 100% | $1.85 | 2 | 29 | $0.03 |
| 1238 | Maxwell x402 api.maxwellinternational.ai |
56.6 | live | 100% | $0.191 | 7 | 14 | $0.002 |
| 1239 | Hyperliquid Market Data hyperliquid.use.x402atlas.com |
56.6 | live | 100% | shared | 7 | 9 | $0.005 |
| 1240 | x402-seller-0ay3.onrender.com x402-seller-0ay3.onrender.com |
56.6 | live | 100% | $0.085 | 8 | 27 | $0.005 |
| 1241 | headers.use.x402atlas.com headers.use.x402atlas.com |
56.6 | live | 100% | shared | 8 | 1 | $0.01 |
| 1242 | AMNT www.amnt.io |
56.6 | live | 100% | $0.078 | 8 | 5 | $0.001 |
| 1243 | kaisha-api.hp-vladic.workers.dev kaisha-api.hp-vladic.workers.dev |
56.6 | live | 100% | $0.074 | 8 | 2 | $0.002 |
| 1244 | SolEnrich api.solenrich.com |
56.6 | live | 100% | $0.071 | 8 | 50 | $0.001 |
| 1245 | api.onhub.ai api.onhub.ai |
56.6 | live | 100% | $0.067 | 8 | 3 | $0.002 |
| 1246 | x402.onhub.ai x402.onhub.ai |
56.6 | live | 100% | $0.067 | 8 | 1 | $0.002 |
| 1247 | api.tcgapi.dev api.tcgapi.dev |
56.6 | live | 100% | $0.065 | 8 | 9 | $0.005 |
| 1248 | address.agentic-jp.com address.agentic-jp.com |
56.6 | live | 100% | shared | 8 | 5 | $0.001 |
| 1249 | diet.agentic-jp.com diet.agentic-jp.com |
56.6 | live | 100% | shared | 8 | 1 | $0.005 |
| 1250 | furigana.agentic-jp.com furigana.agentic-jp.com |
56.6 | live | 100% | shared | 8 | 3 | $0.001 |
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 7 h ago. LogicNodes does not run these services or take a cut.