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
$331,521USDC received on Base, 7 days
#ProviderScoreNowUptime 72hIncome 7dPayers 7dEndpointsFrom
651ENS Resolver
ens-resolver.underscoredone.com		 58.3live100%shared111$0.01
652Hacker News Data
hackernews-data.underscoredone.com		 58.3live100%shared111$0.01
653Hashing, HMAC & Checksum Suite
hash-hmac.underscoredone.com		 58.3live100%shared111$0.01
654HTTP Header Checker
http-header-checker.underscoredone.com		 58.3live100%shared111$0.01
655http-status-checker.underscoredone.com
http-status-checker.underscoredone.com		 58.3live100%shared111$0.01
656JSON Validate, Repair, Convert,
json-suite.underscoredone.com		 58.3live100%shared111$0.01
657Leetspeak Translator
leetspeak-translator.underscoredone.com		 58.3live100%shared111$0.01
658Mortgage & Loan Amortization Cal
mortgage-amortization.underscoredone.com		 58.3live100%shared111$0.01
659hcrb.in
hcrb.in		 58.3live100%$0.321246$0.005
66047620 Solana Data API
47620.xyz		 58.3live100%$0.311285$0.001
661ApiToll Smart Money
edgar.apitoll.cloud		 58.3live100%$0.138144$0.003
662api.api-agent-ia.ch
api.api-agent-ia.ch		 58.3live100%$0.0711524$0.001
663x402-readable
152-53-225-73.sslip.io		 58.2live100%$3.7423$0.005
664Macaroon Network
api.macaroonnetwork.com		 58.2live100%$0.2611241$0.001
665gate402
gate402.app		 58.2live100%$0.254123$0.002
666nodeproxy
nodeproxy-production.up.railway.app		 58.2live100%$0.254121$0.001
667AIMarket
modelmarket.dev		 58.2live100%$0.063158$0.001
668agent-drift-api-production.up.railway.app
agent-drift-api-production.up.railway.app		 58.2live100%shared151$0.002
669agent-memory-api-production-f2c4.up.railway.app
agent-memory-api-production-f2c4.up.railway.app		 58.2live100%shared152$0.001
670joyful-charm-production-bf6d.up.railway.app
joyful-charm-production-bf6d.up.railway.app		 58.2live100%shared155$0.001
671marketplace-price-api-production.up.railway.app
marketplace-price-api-production.up.railway.app		 58.2live100%shared151$0.001
672defi-api.agenticfi.wtf
defi-api.agenticfi.wtf		 58.2live100%$0.041517$0.001
673DeepSeek V4 Flash Chat API
agent402-arb.rosariovitale0096.workers.dev		 58.1live100%$2.51326$0.001
674CoinGecko Crypto Price & Data
coingecko.use.x402atlas.com		 58.1live100%shared136$0.005
675AllTheBot x402 uptime monitor
api.zkrobotics.fr		 58.1live100%$0.07151445$0.002
676402rpc
402rpc.com		 58.1live100%$0.069145$0.001
677Weather Forecast
api.24klabs.ai		 58.0live100%$0.1851223$0.001
678Mart402
mart402.com		 58.0live100%$0.181227$0.001
679DopamineDesk AI Marketplace
ai-data-marketplace-1042299154756.us-central1.run.app		 58.0live100%$0.0631432$0.001
680WickedAPI Trading Data API
api.wickedapi.com		 58.0live100%shared1410$0.001
681WickedAPI Broker Sync
broker-sync-api.wickedapi.com		 58.0live100%shared141$0.001
682WickedAPI Filings Oracle
filings.wickedapi.com		 58.0live100%shared143$0.002
683Wicked Memory
memory.wickedapi.com		 58.0live100%shared141$0.001
6842captcha.x402.paysponge.com
2captcha.x402.paysponge.com		 57.9live100%shared92$0.00
685fal.x402.paysponge.com
fal.x402.paysponge.com		 57.9live100%shared98$0.01
686api.reloadpi.com
api.reloadpi.com		 57.9live100%$0.0781312$0.001
687IXS
api-dev-v2.ixs.finance		 57.9live100%$0.019141$0.001
688IXS
api-v2.ixs.finance		 57.9live100%$0.019141$0.001
689PremiumPin
api.premiumpin.com		 57.8live100%$5.0013$0.01
690hirescrape.com
hirescrape.com		 57.8live100%$0.19705112$0.00225
691Wallet Security Report (premium)
automaton-tx-explainer.vercel.app		 57.8live100%$0.1951141$0.005
692AMNT
amnt.io		 57.8live100%$0.108122$0.01
693base.mapleai.shop
base.mapleai.shop		 57.8live100%$0.043058137$0.001023
694AI Agent Setup Checklist
ai-agent-setup-checklist.agentchecklist.workers.dev		 57.7live100%$3.0227$0.02
695AUN
a-upgradenet.com		 57.7live100%$0.1771114$0.001
696headlessoracle.com
headlessoracle.com		 57.7live100%$0.032131$0.001
697mcapi.jackiscool.com
mcapi.jackiscool.com		 57.6live100%$1.0951$0.001
698address.agentic-jp.com
address.agentic-jp.com		 57.6live100%shared125$0.001
699diet.agentic-jp.com
diet.agentic-jp.com		 57.6live100%shared121$0.005
700furigana.agentic-jp.com
furigana.agentic-jp.com		 57.6live100%shared123$0.001
← 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 21 h ago. LogicNodes does not run these services or take a cut.