Public infrastructure registry
Search what agents depend on.
Every researched MCP server and x402 endpoint, with its latest observed state, tool surface, payment evidence, and rating status. Data current through Aug 12, 2026 UTC.
Researched listings3,365records held
In this view3,365filters applied
Answering1,488answered at their own latest call
Payment terms411listings declaring terms
Published grades0NR below the floor
Latest sweepAug 12, 2026 UTC1,260 listings re-called that day
Sorted by Evidence held, descending
Registry results.
3,365 researched listings match this view. Open any listing to inspect its scorecard and evidence ledger. 4 distinct evidence sets appear across these 50 rows. Every research record here was collected Aug 11, 2026 UTC.
| ListingSort by Listing, ascending. | Type | StatusSort by Status, descending. | Rating | ToolsSort by Tools, descending. | Evidence | PaymentsSort by Payments, descending. | Last observedSort by Last observed, descending. |
|---|---|---|---|---|---|---|---|
| Kronos x402 API host: |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · wallet balance | Terms declared | Aug 11, 2026 UTC |
| AiSpace x402 Marketplace | Pay-per-request AI for agents host:x402. |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| ChainAnalyzer — Multi-Chain AML and Stablecoin Intelligence host: |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| 404 Not Found host:proxy. |
x402 | Answering | NR | — | liveness · payment terms · wallet balance | Terms declared | Aug 11, 2026 UTC |
| twentyone million — Edition I · Genesis host: |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · wallet balance | Terms declared | Aug 11, 2026 UTC |
| api.regressionincoming.fyi host:api. |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| api.tcgapi.dev host:api.tcgapi. |
x402 | Answering | NR | — | liveness · payment terms · wallet balance | Terms declared | Aug 11, 2026 UTC |
| gateway.apiosk.com host:gateway. |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| x402Factory.ai - Where everything becomes an endpoint host: |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| Atelier — AI Agent Marketplace host:api. |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| Polynews host:polynews. |
x402 | Answering | NR | — | liveness · payment terms · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| Recoup API host:recoup-api. |
x402 | Answering | NR | — | liveness · payment terms · wallet balance | Terms declared | Aug 11, 2026 UTC |
| Recoup API host:api. |
x402 | Answering | NR | — | liveness · payment terms · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| Toolkit.dev host:staging. |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · wallet balance | Terms declared | Aug 11, 2026 UTC |
| Keyronne host:keyronne. |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| GPT55 Model Gateway host:gpt55. |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · wallet balance | Terms declared | Aug 11, 2026 UTC |
| api.x-402.online host:api.x-402. |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| vps.phoneagent.xyz host:vps. |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · wallet balance | Terms declared | Aug 11, 2026 UTC |
| OnRamperX — non-custodial value router host:router. |
x402 | Answering | NR | — | liveness · payment terms · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| Agent Ready Kit — get recommended by AI agents host:mudko.com |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| Epstein Island Club | 402 Payment Gated Evidence Archive host: |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| ToolOracle — Capability Router for Autonomous Agents host:tooloracle. |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · wallet balance | Terms declared | Aug 11, 2026 UTC |
| mysticapi.com host:mysticapi. |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| mimirapi.com host:mimirapi. |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| SQLGuard — approval firewall for AI agents host:sqlguard.io |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · wallet balance | Terms declared | Aug 11, 2026 UTC |
| SQLGuard — approval firewall for AI agents host: |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · wallet balance | Terms declared | Aug 11, 2026 UTC |
| PulseFeed — the trust layer for x402 agent payments host:pulsefeed. |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| Arch Tools — 63 AI Agent Tools in One API (x402, LangChain, MCP) host:archtools. |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| api.stacktr.ee host:api. |
x402 | Answering | NR | — | liveness · payment terms · wallet balance | Terms declared | Aug 11, 2026 UTC |
| mediaforge.mediaforge-hq.workers.dev host:mediaforge. |
x402 | Answering | NR | — | liveness · payment terms · wallet balance | Terms declared | Aug 11, 2026 UTC |
| Error host:rest. |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| Error host:rest. |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · wallet balance | Terms declared | Aug 11, 2026 UTC |
| x402.org host: |
x402 | Answering | NR | — | liveness · payment terms · wallet balance | Terms declared | Aug 11, 2026 UTC |
| error404.life — a redirect to what matters host:error404. |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| api.phoneagent.xyz host:api. |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · wallet balance | Terms declared | Aug 11, 2026 UTC |
| AIsa Payment Gateway - SDK Demo host:pay.lnpay. |
x402 | Answering | NR | — | liveness · payment terms · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| AIsa Payment Gateway - SDK Demo host:openapi. |
x402 | Answering | NR | — | liveness · payment terms · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| grapevine.dev-mypinata.cloud host:grapevine. |
x402 | Answering | NR | — | liveness · payment terms · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| Legal Services in Spain | Legal Fournier host: |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| api.vindexapi.dev host:api. |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| VandaagAI — Nieuws en analyse over AI host:www. |
x402 | Answering | NR | — | liveness · payment terms · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| api.proxyllm.ai host:api. |
x402 | Answering | NR | — | liveness · payment terms · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| orcpin.dev host:orcpin.dev |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| x402.openwebninja.com host:x402. |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| Sell Crypto Instantly | Madhouse Wallet Offramp host:try. |
x402 | Answering | NR | — | liveness · payment terms · llms.txt · domain age · wallet balance | Terms declared | Aug 11, 2026 UTC |
| x402-weather-api-production-04c4.up.railway.app host: |
x402 | Answering | NR | — | liveness · payment terms · wallet balance | Terms declared | Aug 11, 2026 UTC |
| x402-vehicle-api-production.up.railway.app host: |
x402 | Answering | NR | — | liveness · payment terms · wallet balance | Terms declared | Aug 11, 2026 UTC |
| x402-finance-api-production.up.railway.app host: |
x402 | Answering | NR | — | liveness · payment terms · wallet balance | Terms declared | Aug 11, 2026 UTC |
| x402-company-api-production.up.railway.app host: |
x402 | Answering | NR | — | liveness · payment terms · wallet balance | Terms declared | Aug 11, 2026 UTC |
| web-scraper-api-production-bf20.up.railway.app host: |
x402 | Answering | NR | — | liveness · payment terms · wallet balance | Terms declared | Aug 11, 2026 UTC |
Kronos x402 APIhost:kronos-x402.vercel.app
NRAiSpace x402 Marketplace | Pay-per-request AI for agentshost:x402.aispace.bot
NRChainAnalyzer — Multi-Chain AML and Stablecoin Intelligencehost:chain-analyzer.com
NR404 Not Foundhost:proxy.suverse.io
NRtwentyone million — Edition I · Genesishost:twentyonemillion.art
NRapi.regressionincoming.fyihost:api.regressionincoming.fyi
NRapi.tcgapi.devhost:api.tcgapi.dev
NRgateway.apiosk.comhost:gateway.apiosk.com
NRx402Factory.ai - Where everything becomes an endpointhost:x402factory.ai
NRAtelier — AI Agent Marketplacehost:api.useatelier.ai
NRPolynewshost:polynews.news
NRRecoup APIhost:recoup-api.vercel.app
NRRecoup APIhost:api.recoupable.dev
NRToolkit.devhost:staging.toolkit.dev
NRKeyronnehost:keyronne.com
NRGPT55 Model Gatewayhost:gpt55.558686.xyz
NRapi.x-402.onlinehost:api.x-402.online
NRvps.phoneagent.xyzhost:vps.phoneagent.xyz
NROnRamperX — non-custodial value routerhost:router.mudko.com
NRAgent Ready Kit — get recommended by AI agentshost:mudko.com
NREpstein Island Club | 402 Payment Gated Evidence Archivehost:epsteinisland.club
NRToolOracle — Capability Router for Autonomous Agentshost:tooloracle.io
NRmysticapi.comhost:mysticapi.com
NRmimirapi.comhost:mimirapi.com
NRSQLGuard — approval firewall for AI agentshost:sqlguard.io
NRSQLGuard — approval firewall for AI agentshost:sqlguard-io.fly.dev
NRPulseFeed — the trust layer for x402 agent paymentshost:pulsefeed.dev
NRArch Tools — 63 AI Agent Tools in One API (x402, LangChain, MCP)host:archtools.dev
NRapi.stacktr.eehost:api.stacktr.ee
NRmediaforge.mediaforge-hq.workers.devhost:mediaforge.mediaforge-hq.workers.dev
NRErrorhost:rest.staging.wagmi.productions
NRErrorhost:rest.coincap.io
NRx402.orghost:x402-mainnet.vercel.app
NRerror404.life — a redirect to what mattershost:error404.life
NRapi.phoneagent.xyzhost:api.phoneagent.xyz
NRAIsa Payment Gateway - SDK Demohost:pay.lnpay.ai
NRAIsa Payment Gateway - SDK Demohost:openapi.aisa.one
NRgrapevine.dev-mypinata.cloudhost:grapevine.dev-mypinata.cloud
NRLegal Services in Spain | Legal Fournierhost:legalfournier.com
NRapi.vindexapi.devhost:api.vindexapi.dev
NRVandaagAI — Nieuws en analyse over AIhost:www.vandaagai.nl
NRapi.proxyllm.aihost:api.proxyllm.ai
NRorcpin.devhost:orcpin.dev
NRx402.openwebninja.comhost:x402.openwebninja.com
NRSell Crypto Instantly | Madhouse Wallet Offramphost:try.madhousewallet.com
NRx402-weather-api-production-04c4.up.railway.apphost:x402-weather-api-production-04c4.up.railway.app
NRx402-vehicle-api-production.up.railway.apphost:x402-vehicle-api-production.up.railway.app
NRx402-finance-api-production.up.railway.apphost:x402-finance-api-production.up.railway.app
NRx402-company-api-production.up.railway.apphost:x402-company-api-production.up.railway.app
NRweb-scraper-api-production-bf20.up.railway.apphost:web-scraper-api-production-bf20.up.railway.app
NRHow to read this registry. Status is what happened the last time that listing was called, and “Last observed” is the date of that call — the sweep is rolling, so those dates differ between rows. “Never probed” means no liveness observation has ever been recorded for the listing. NR means the evidence floor has not been met; it is not a low grade. Payment flow is observed inbound USDC within a disclosed Base block range, not revenue or proof of ownership.