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
$324,784USDC received on Base, 7 days
#ProviderScoreNowUptime 72hIncome 7dPayers 7dEndpointsFrom
451Predge - Wallet Intelligence
api.predge.io		 62.2live100%$9.16420$0.005
452Ask a Human (Tech & Toast)
ai-to-human.techandtoast.io		 61.9live100%$20.0015$1.00
453dev-5090 uncensored inference
dev-5090-box.tailfb4c1f.ts.net		 61.9live100%$4.06919$0.005
454api.clawfetch.ai
api.clawfetch.ai		 61.6live100%$0.897269$0.001
455agent-audit
agent-audit.agent-audit.workers.dev		 61.5live100%$5.9653$0.003
456Retriever AI
agents.rtrvr.ai		 61.5live100%$3.051022$0.05
457Kronos Crypto Data & Forecasts
kronossignals.com		 61.5live100%$2.531242$0.02
458Factline
factline.dev		 61.5live100%$2.081440$0.001
459code-toll-production.up.railway.app
code-toll-production.up.railway.app		 61.5live100%shared194$0.01
460compute-api-production-245d.up.railway.app
compute-api-production-245d.up.railway.app		 61.5live100%shared1910$0.001
461gecko-toll-production.up.railway.app
gecko-toll-production.up.railway.app		 61.5live100%shared192$0.01
462llm-toll-production.up.railway.app
llm-toll-production.up.railway.app		 61.5live100%shared192$0.01
463margin-api-production-d413.up.railway.app
margin-api-production-d413.up.railway.app		 61.5live100%shared192$0.01
464DefiLlama DeFi TVL & Yields
defillama.use.x402atlas.com		 61.4live100%shared1130$0.005
465ApiToll Stablecoins
crypto.apitoll.cloud		 61.4live100%$0.373511$0.001
466agentpaystore.com
agentpaystore.com		 61.3live100%shared2417$0.001
467agentworld.me
agentworld.me		 61.3live100%shared242$0.001
468aiarena.lol
aiarena.lol		 61.3live100%shared241$0.02
469gibbr.app
gibbr.app		 61.3live100%shared241$0.002
470SingIt Web Search (Exa)
ask.singitai.app		 61.2live100%$0.8549582323$0.001082
471LAX registry by Kognai
lax.kognai.ai		 61.1live100%$1.46161$0.01
472EDGAR Fundamental Scores
fundamental-scores-x402.onrender.com		 61.1live100%$1.101911$0.001
473Text summarizer API
dominion-data.x402-evm-math.workers.dev		 61.0live100%$0.96462016$0.001
474Website tech stack detector API
golf-evm-math.x402-evm-math.workers.dev		 61.0live100%$0.96462027$0.001
475Agent Toolbox
agent-toolbox.zafermemon87.workers.dev		 60.9live100%$1.261619$0.002
476Crypto Market Data
crypto-market-data.zafermemon87.workers.dev		 60.9live100%$1.261610$0.003
477gateway.spraay.app
gateway.spraay.app		 60.8live100%$0.7512128$0.001
478Vimmerse Dev
agents.vimmerse.co		 60.7live100%shared33$0.12
479clouatre.ca
clouatre.ca		 60.7live100%$3.2473$0.003
480Records for Agents
licenses.recordsforagents.com		 60.7live100%$2.4891$0.01
481Agent Tools
agent-tools.jbarkules.workers.dev		 60.7live100%$0.94221821$0.001
482Agent Tools
agents.crowdspark.me		 60.7live100%$0.94221849$0.001
483x402 API Finder
bess-x402.onrender.com		 60.7live100%$0.70921184$0.002
484api.x-402.online
api.x-402.online		 60.6live100%$1.351462$0.005
485Apple App Store Search & Reviews
appstore.use.x402atlas.com		 60.6live100%shared155$0.02
486Market Intelligence API
api.marketintelligenceapi.com		 60.6live100%$0.46319424105$0.001
487Afriref - Africa reference data
afriref.dev		 60.5live100%shared1326$0.002
488Asiaref - Asia reference data
asiaref.dev		 60.5live100%shared1324$0.002
489Ausref - Oceania reference data
ausref.dev		 60.5live100%shared1324$0.002
490DomainRef
domainref.dev		 60.5live100%shared132$0.005
491Euroref - Europe reference data
euroref.dev		 60.5live100%shared1324$0.002
492Latamref - LatAm reference data
latamref.dev		 60.5live100%shared1324$0.002
493Mearef - Mid-East reference data
mearef.dev		 60.5live100%shared1324$0.002
494api.getanyapi.com
api.getanyapi.com		 60.5live100%$1.171520$0.001
495FiatDock Marketplace
fiatdock.com		 60.5live100%$0.485523121$0.001
496LION Verified Company
lion-x402-bible.lionmaster-operations.workers.dev		 60.5live100%$0.47234$0.001
497LION Verified Company
lion-x402.lionmaster-operations.workers.dev		 60.5live100%$0.47232$0.001
498LION Verified Company
lionx402.com		 60.5live100%$0.472326$0.001
499api.you.com
api.you.com		 60.4live100%$1.18142$0.005
500Akari InvestAI
akari-x402.puzzling-marten.workers.dev		 60.3live100%$4.58414$0.02
← previous4,142 providersnext →
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 18 h ago. LogicNodes does not run these services or take a cut.