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
$339,528USDC received on Base, 7 days
| # | Provider | Score | Now | Uptime 72h | Income 7d | Payers 7d | Endpoints | From |
|---|---|---|---|---|---|---|---|---|
| 2001 | StableCrypto stablecrypto.dev |
55.0 | live | 100% | $0.10 | 4 | 3 | $0.01 |
| 2002 | Stelar Digital api.stelardigital.com |
55.0 | live | 100% | $0.095 | 4 | 5 | $0.005 |
| 2003 | Vaaya vaaya.ai |
54.9 | live | 100% | $0.72 | 2 | 40 | $0.01 |
| 2004 | walcert.globalscoreagent.com walcert.globalscoreagent.com |
54.9 | live | 100% | $0.328552 | 3 | 2 | $0.05 |
| 2005 | superagent-550d0830.base44.app superagent-550d0830.base44.app |
54.9 | live | 100% | $0.32 | 3 | 2 | $0.02 |
| 2006 | SwogeAgentic web-production-220a3.up.railway.app |
54.9 | live | 100% | $0.088 | 4 | 23 | $0.003 |
| 2007 | Domain & Network Lookup agentpay.agentpay-apis.workers.dev |
54.9 | live | 100% | $0.085 | 4 | 8 | $0.005 |
| 2008 | loophole tape api.loopholetape.com |
54.9 | live | 100% | $0.081 | 4 | 40 | $0.001 |
| 2009 | Apify API stableapify.dev |
54.9 | live | 100% | $0.08 | 4 | 10 | $0.01 |
| 2010 | Stormap stormap.ai |
54.9 | live | 100% | $0.08 | 4 | 14 | $0.01 |
| 2011 | PaywallWatch api.paywallwatch.com |
54.9 | live | 100% | $0.072 | 4 | 2 | $0.003 |
| 2012 | SYNTHORA api.hergertsynthora.com |
54.9 | live | 100% | $0.071 | 4 | 9 | $0.01 |
| 2013 | dnsdomain.hergertsynthora.com dnsdomain.hergertsynthora.com |
54.9 | live | 100% | $0.071 | 4 | 1 | $0.001 |
| 2014 | npm-downloads-range.hergertsynthora.com npm-downloads-range.hergertsynthora.com |
54.9 | live | 100% | $0.071 | 4 | 1 | $0.001 |
| 2015 | Lending Rate Optimizer api.alphabuild.xyz |
54.9 | live | 100% | $0.07 | 4 | 2 | $0.01 |
| 2016 | dt0ur.online dt0ur.online |
54.9 | live | 100% | $0.07 | 4 | 31 | $0.01 |
| 2017 | Reise-Agent Attest v2 (PayAPI) travel.hanibal-ai.com |
54.9 | live | 100% | $0.07 | 4 | 2 | $0.01 |
| 2018 | VIA Travel Research via-router.floot.app |
54.9 | live | 100% | $0.07 | 4 | 7 | $0.01 |
| 2019 | x402 Service Index the full dire speedbot.dev |
54.8 | live | 100% | $0.291866 | 3 | 30 | $0.003333 |
| 2020 | clawpay.ai clawpay.ai |
54.8 | live | 100% | $0.27 | 3 | 10 | $0.01 |
| 2021 | Foundry minty-sprout.onrender.com |
54.8 | live | 100% | $0.264 | 3 | 106 | $0.001 |
| 2022 | api.agentnewsstand.com api.agentnewsstand.com |
54.8 | live | 100% | $0.06 | 4 | 2 | $0.01 |
| 2023 | CrawlWitness api.crawlwitness.com |
54.8 | live | 100% | $0.057 | 4 | 3 | $0.001 |
| 2024 | jsonrecon.com jsonrecon.com |
54.8 | live | 100% | $0.055 | 4 | 3 | $0.005 |
| 2025 | Scry Wallet Intelligence scry.solanahub.de |
54.8 | live | 100% | $0.055 | 4 | 7 | $0.005 |
| 2026 | Space Data API agentdataapi.onrender.com |
54.8 | live | 100% | $0.05 | 4 | 4 | $0.01 |
| 2027 | BorderScout borderscout.scalpstream.com |
54.8 | live | 100% | $0.05 | 4 | 1 | $0.01 |
| 2028 | fuelscout.scalpstream.com fuelscout.scalpstream.com |
54.8 | live | 100% | $0.05 | 4 | 1 | $0.01 |
| 2029 | Court Delta Pro mcp.courtdelta.com |
54.8 | live | 100% | $0.05 | 4 | 4 | $0.01 |
| 2030 | recallscout.scalpstream.com recallscout.scalpstream.com |
54.8 | live | 100% | $0.05 | 4 | 1 | $0.01 |
| 2031 | recipients[] serial recipients-paywall.onrender.com |
54.8 | live | 100% | $0.05 | 4 | 1 | $0.01 |
| 2032 | uxus.finance uxus.finance |
54.8 | live | 100% | $0.05 | 4 | 7 | $0.01 |
| 2033 | Verif Entreprise FR api-production-24833.up.railway.app |
54.8 | live | 100% | $0.048 | 4 | 4 | $0.002 |
| 2034 | archtools.dev archtools.dev |
54.8 | live | 100% | $0.045 | 4 | 19 | $0.01 |
| 2035 | api.monpham.work api.monpham.work |
54.8 | live | 100% | $0.042 | 4 | 2 | $0.003 |
| 2036 | predator-ubuntu.taild9a745.ts.net predator-ubuntu.taild9a745.ts.net |
54.8 | live | 100% | $0.042 | 4 | 15 | $0.001 |
| 2037 | x402.monpham.work x402.monpham.work |
54.8 | live | 100% | $0.042 | 4 | 2 | $0.003 |
| 2038 | ACODA Liquidation Intelligence acoda.xyz |
54.8 | live | 100% | $0.04 | 4 | 1 | $0.01 |
| 2039 | alest.io alest-x402.alest.workers.dev |
54.8 | live | 100% | $0.04 | 4 | 2 | $0.01 |
| 2040 | api.alexstokes.com api.alexstokes.com |
54.8 | live | 100% | $0.04 | 4 | 1 | $0.01 |
| 2041 | api.datanexusai.org api.datanexusai.org |
54.8 | live | 100% | $0.04 | 4 | 2 | $0.01 |
| 2042 | Polyform api.polyform.org |
54.8 | live | 100% | $0.04 | 4 | 1 | $0.01 |
| 2043 | PreReason api.prereason.com |
54.8 | live | 100% | $0.04 | 4 | 39 | $0.01 |
| 2044 | Lagoon CIV Commodity Data data.lagoontechsystems.com |
54.8 | live | 100% | $0.04 | 4 | 1 | $0.01 |
| 2045 | data.spencermcw.com data.spencermcw.com |
54.8 | live | 100% | $0.04 | 4 | 19 | $0.005 |
| 2046 | Book chapter preppers-paradise.com |
54.8 | live | 100% | $0.04 | 4 | 1 | $0.01 |
| 2047 | JoJ API spotify.jojapi.net |
54.8 | live | 100% | $0.04 | 4 | 2 | $0.01 |
| 2048 | BAGS Agent API staging.getbags.app |
54.8 | live | 100% | $0.04 | 4 | 1 | $0.01 |
| 2049 | Stock Bloc stockbloc.ai.studio |
54.8 | live | 100% | $0.04 | 4 | 3 | $0.01 |
| 2050 | supplier-risk-api-production.up.railway.app supplier-risk-api-production.up.railway.app |
54.8 | live | 100% | $0.04 | 4 | 2 | $0.01 |
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 22 h ago. LogicNodes does not run these services or take a cut.