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
$322,362USDC received on Base, 7 days
#ProviderScoreNowUptime 72hIncome 7dPayers 7dEndpointsFrom
1701grocery-basket.bowling-anthony.workers.dev
grocery-basket.bowling-anthony.workers.dev		 56.2live100%shared73$0.01
1702mcpfax-diag.bowling-anthony.workers.dev
mcpfax-diag.bowling-anthony.workers.dev		 56.2live100%shared75$0.005
1703mcpfax-intel.bowling-anthony.workers.dev
mcpfax-intel.bowling-anthony.workers.dev		 56.2live100%shared71$0.01
1704mcpfax-markets.bowling-anthony.workers.dev
mcpfax-markets.bowling-anthony.workers.dev		 56.2live100%shared72$0.005
1705mcpfax-utility.bowling-anthony.workers.dev
mcpfax-utility.bowling-anthony.workers.dev		 56.2live100%shared72$0.005
1706onchain-toolkit.bowling-anthony.workers.dev
onchain-toolkit.bowling-anthony.workers.dev		 56.2live100%shared71$0.005
1707agenttoll.app
agenttoll.app		 56.2live100%$0.062715$0.001
1708QuickBuild
quickbuild.quynguyenbac.workers.dev		 56.2live100%$0.062721$0.001
1709Macaroon Network
api.macaroonnetwork.com		 56.2live100%$0.061741$0.001
1710Web Search
4yearcycle.com		 56.2live100%$0.0673$0.005
1711Web Page to Markdown
api.stablecoingateways.com		 56.2live100%$0.057714$0.001
1712agent-tools-7936.onrender.com
agent-tools-7936.onrender.com		 56.2live100%$0.05678$0.001
1713tollbooth-fdic-verify.sjwilliams8.workers.dev
tollbooth-fdic-verify.sjwilliams8.workers.dev		 56.2live100%shared71$0.01
1714tollbooth-hello-testnet.sjwilliams8.workers.dev
tollbooth-hello-testnet.sjwilliams8.workers.dev		 56.2live100%shared71$0.001
1715tollbooth-hello.sjwilliams8.workers.dev
tollbooth-hello.sjwilliams8.workers.dev		 56.2live100%shared71$0.001
1716tollbooth-sanctions-screener.sjwilliams8.workers.dev
tollbooth-sanctions-screener.sjwilliams8.workers.dev		 56.2live100%shared71$0.01
1717Agent Artifact Publisher
agent-artifact-eta.vercel.app		 56.2live100%$0.05571$0.005
1718Link Lens URL Inspector
linklens-sand.vercel.app		 56.2live100%$0.05571$0.01
1719Aegis Curated Briefing
aegis-ai.xyz		 56.2live100%$0.05272$0.006
1720getbits.net
getbits.net		 56.2live100%$0.05271$0.02
1721Japan Stablecoin Payment Monitor
open-pay.jp		 56.2live100%$0.05274$0.01
1722Secret Scan
x402-hono-api.inraby.workers.dev		 56.2live100%$0.050573$0.0045
1723Cult OS Developer Tools
www.cultos.dev		 56.2live100%$0.05714$0.001
1724almanac.locomot.io
almanac.locomot.io		 56.2live100%$0.04771$0.001
1725touchstone.locomot.io
touchstone.locomot.io		 56.2live100%$0.047714$0.001
1726cryptoshark.duckdns.org
cryptoshark.duckdns.org		 56.2live100%$0.04671$0.005
1727Live Open Data India & World
api.jexxa.org		 56.2live100%$0.04571$0.005
1728bunnvault.xyz
bunnvault.xyz		 56.2live100%$0.04571$0.005
1729x402-domain-check.vercel.app
x402-domain-check.vercel.app		 56.1live100%$0.57420$0.01
1730Aero Allocator
aeroallocator.app		 56.1live100%$0.5543$0.05
1731Paxie.Matrix Data API
api.paxie.fun		 56.1live100%$0.53547$0.005
1732Agent Data Platform
agent-data-platform.langtools.workers.dev		 56.1live100%$0.3458$0.005
1733api.agishub.com
api.agishub.com		 56.1live100%$0.141561$0.01
1734api.oassis.dev
api.oassis.dev		 56.1live100%$0.141567$0.002
1735Particle Pro
api.particle.pro		 56.1live100%$0.14617$0.01
1736cryptofeed402
cryptofeed402.site		 56.1live100%$0.0395713$0.002
1737Site Quality Audit
mudko.com		 56.1live100%$0.03477$0.10
1738OnRamperX
router.mudko.com		 56.1live100%$0.03471$0.005
1739Agent Rest Stop
agent-gas-station.agent-gas-station.workers.dev		 56.1live100%$0.032754$0.002
1740Agent Rest Stop
agentreststop.com		 56.1live100%$0.03274$0.002
1741chess402.vercel.app
chess402.vercel.app		 56.1live100%$0.0374$0.001
1742api.genesistokenlabs.com
api.genesistokenlabs.com		 56.1live100%$0.02775$0.001
1743pkg-oracle
mcp-snowy-dew-9447.fly.dev		 56.1live100%$0.02471$0.003
1744token-oracle
token-oracle.fly.dev		 56.1live100%$0.02471$0.003
1745url-oracle
url-oracle.fly.dev		 56.1live100%$0.02471$0.003
1746CRA AGENT data
api.cra-agent.tech		 56.1live100%$0.023721$0.0005
1747Chit402
api.chit402.com		 56.1live100%$0.01671$0.002
1748api.xfuel.app
api.xfuel.app		 56.1live100%$0.01673$0.002
17495108-x402.community.iamstarchild.com
5108-x402.community.iamstarchild.com		 56.1live100%$0.01471$0.002
1750767-2676.com
767-2676.com		 56.1live100%$0.01373$0.001
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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 16 h ago. LogicNodes does not run these services or take a cut.