Every domain below was verified by fetching its manifest, not taken from another registry's word. Together they declare 1,844 agentic resources. This is the complete list as far as we can measure it, and it is the only published one.
The Agentic Resource Discovery specification defines a publisher as whoever hosts a manifest describing one or more agentic resources, at a well-known path on their own domain. It is how a website tells an AI agent what it can call: which MCP servers, skills, agents and APIs exist here, and what each is for.
Version 0.91 renamed the manifest to /.well-known/ard.json, and
the deployed base has not followed: 183 of these publishers still serve the
older /.well-known/ai-catalog.json and only 16 serve the new
name. Anything reading the ecosystem has to request both, and a tool that checks only
ard.json will conclude, wrongly, that almost nobody has adopted the spec.
| Publisher | Resources | Answering | Manifest |
|---|---|---|---|
| huggingface.co mcp servers · ard registries · agent skills | 788 | not checked | ai-catalog.json |
| api.mcp.github.com mcp servers | 105 | 100 | ai-catalog.json |
| zapier.com catalogues · machine-readable docs · mcp servers · openapi services | 44 | 7 | ai-catalog.json |
| 2s.io mcp servers · openapi services | 40 | 14 | ai-catalog.json |
| gstcranes.com a2a agents · machine-readable docs · mcp servers · openapi services | 37 | 2 | ai-catalog.json |
| built2winweb.com machine-readable docs · mcp servers · openapi services · other callable resources | 28 | 7 | ai-catalog.json |
| datasignalslab.com mcp servers | 19 | 3 | ai-catalog.json |
| ultimaluz.com mcp servers · other callable resources | 14 | not checked | ai-catalog.json |
| apify.com machine-readable docs · mcp servers · openapi services · other callable resources | 13 | 1 | ai-catalog.json |
| capability.network other callable resources | 13 | 2 | ai-catalog.json |
| clickhouse.com mcp servers · other callable resources · agent skills | 12 | 6 | ai-catalog.json |
| eprimo.de machine-readable docs · other callable resources | 12 | not checked | ai-catalog.json |
| hostinger.com openapi services · packages | 12 | not checked | ai-catalog.json |
| agentcommunity.org machine-readable docs · mcp servers · openapi services · other callable resources | 10 | 1 | ai-catalog.json |
| agentic-mermaid.dev machine-readable docs · mcp servers · other callable resources · agent skills | 10 | not checked | ai-catalog.json |
| airtable.com mcp servers · openapi services · agent skills | 10 | 7 | ai-catalog.json |
| anahana.com machine-readable docs · mcp servers · openapi services · other callable resources | 10 | not checked | ai-catalog.json |
| api.delx.ai a2a agents · catalogues · machine-readable docs · mcp servers | 10 | 1 | ai-catalog.json |
| jacobcampbellrealtor.com machine-readable docs · mcp servers · openapi services | 10 | not checked | ai-catalog.json |
| mandateshield.com a2a agents · mcp servers · openapi services · other callable resources | 10 | 3 | ai-catalog.json |
| neon.com mcp servers · agent skills | 10 | 5 | ai-catalog.json |
| surrealdb.com machine-readable docs · mcp servers · openapi services · other callable resources | 10 | not checked | ai-catalog.json |
| tweetsmash.com a2a agents · machine-readable docs · mcp servers · openapi services | 10 | 2 | ai-catalog.json |
| 0xarchive.io machine-readable docs · openapi services · other callable resources | 9 | not checked | ai-catalog.json |
| aicontentdrop.com a2a agents · machine-readable docs · openapi services · other callable resources | 9 | not checked | ai-catalog.json |
| www.skillsboard.sh machine-readable docs · mcp servers · openapi services · other callable resources | 9 | 1 | ai-catalog.json |
| commerce.delx.ai a2a agents · catalogues · machine-readable docs · mcp servers | 8 | 1 | ai-catalog.json |
| outlit.ai a2a agents · machine-readable docs · mcp servers · openapi services | 8 | 1 | ai-catalog.json |
| plainrouter.com machine-readable docs · mcp servers · openapi services · other callable resources | 8 | not checked | ai-catalog.json |
| railway.com machine-readable docs · mcp servers · openapi services · other callable resources | 8 | 3 | ard.json |
| snowdata.ai catalogues · mcp servers · openapi services · ard registries | 8 | 1 | ai-catalog.json |
| ticktape.cc machine-readable docs · mcp servers · openapi services · other callable resources | 8 | 2 | ai-catalog.json |
| wikijuridica.com.br machine-readable docs · mcp servers · openapi services · other callable resources | 8 | not checked | ai-catalog.json |
| adadiamonds.com machine-readable docs · mcp servers · openapi services · other callable resources | 7 | not checked | ai-catalog.json |
| agentgates.ai a2a agents · mcp servers · openapi services · other callable resources | 7 | not checked | ai-catalog.json |
| aux.prdictionedge.ai a2a agents · machine-readable docs · openapi services · other callable resources | 7 | not checked | ai-catalog.json |
| coworkingview.com machine-readable docs · openapi services · other callable resources | 7 | not checked | ai-catalog.json |
| cuvo.co machine-readable docs · mcp servers · openapi services · other callable resources | 7 | not checked | ai-catalog.json |
| delx.ai a2a agents · catalogues · machine-readable docs · mcp servers | 7 | 1 | ai-catalog.json |
| eodly.io machine-readable docs · mcp servers · openapi services · agent skills | 7 | 2 | ard.json |
| politicalcomms.com a2a agents · machine-readable docs · mcp servers · openapi services | 7 | 1 | ai-catalog.json |
| prismfact.com mcp servers · openapi services · other callable resources | 7 | not checked | ai-catalog.json |
| relaystation.ai machine-readable docs · mcp servers · openapi services | 7 | 4 | ai-catalog.json |
| snowsure.ai a2a agents · catalogues · mcp servers · openapi services | 7 | not checked | ai-catalog.json |
| tv.madeinro.eu a2a agents · machine-readable docs · mcp servers · openapi services | 7 | 1 | ai-catalog.json |
| www.winpot.mx machine-readable docs · mcp servers · openapi services | 7 | not checked | ai-catalog.json |
| yappy.biz a2a agents · machine-readable docs · mcp servers · openapi services | 7 | not checked | ai-catalog.json |
| amplitude.com mcp servers · openapi services · agent skills | 6 | not checked | ai-catalog.json |
| blitzreels.com machine-readable docs · mcp servers · other callable resources · agent skills | 6 | not checked | ai-catalog.json |
| dribba.com a2a agents · machine-readable docs · mcp servers · openapi services | 6 | not checked | ai-catalog.json |
| f1laps.com machine-readable docs · mcp servers · agent skills | 6 | not checked | ai-catalog.json |
| inclusifyapp.com machine-readable docs · other callable resources | 6 | not checked | ai-catalog.json |
| jobspipe.dev machine-readable docs · mcp servers · openapi services · other callable resources | 6 | not checked | ai-catalog.json |
| mitosislabs.ai a2a agents · mcp servers · other callable resources · agent skills | 6 | not checked | ai-catalog.json |
| negativeev.com a2a agents · machine-readable docs · mcp servers · openapi services | 6 | not checked | ai-catalog.json |
| nexez.ai mcp servers · openapi services | 6 | not checked | ai-catalog.json |
| padlet.com machine-readable docs · mcp servers · openapi services · other callable resources | 6 | not checked | ai-catalog.json |
| publica.la machine-readable docs · mcp servers · other callable resources | 6 | not checked | ard.json |
| saasdossier.com a2a agents · machine-readable docs · mcp servers · other callable resources | 6 | 4 | ai-catalog.json |
| speakeasy.com machine-readable docs · mcp servers · openapi services · other callable resources | 6 | not checked | ai-catalog.json |
| www.lelo.com machine-readable docs · openapi services | 6 | not checked | ai-catalog.json |
| aradia.com machine-readable docs · other callable resources | 5 | not checked | ai-catalog.json |
| avizo.ro machine-readable docs · mcp servers · openapi services · agent skills | 5 | 3 | ai-catalog.json |
| certifier.io machine-readable docs · mcp servers · openapi services | 5 | not checked | ai-catalog.json |
| deepsearch.app machine-readable docs · mcp servers · openapi services · agent skills | 5 | not checked | ai-catalog.json |
| desvela.dev mcp servers · ard registries | 5 | not checked | ard.json |
| immersivecommons.com a2a agents · mcp servers · openapi services · agent skills | 5 | not checked | ai-catalog.json |
| loopingagent.com machine-readable docs · mcp servers | 5 | not checked | ai-catalog.json |
| mailbox.bot a2a agents · mcp servers · openapi services · other callable resources | 5 | not checked | ai-catalog.json |
| nextjs.org machine-readable docs | 5 | not checked | ai-catalog.json |
| notepad.page machine-readable docs · other callable resources | 5 | 1 | ai-catalog.json |
| primitive.dev a2a agents · mcp servers · openapi services · agent skills | 5 | 4 | ai-catalog.json |
| quicknode.com a2a agents · mcp servers · openapi services · other callable resources | 5 | not checked | ai-catalog.json |
| scvd.store a2a agents · mcp servers · openapi services · agent skills | 5 | not checked | ard.json |
| sssnack.com a2a agents · mcp servers · other callable resources · agent skills | 5 | not checked | ai-catalog.json |
| supademo.com machine-readable docs · openapi services · other callable resources | 5 | not checked | ai-catalog.json |
| travel-trends.mmatinca.eu a2a agents · machine-readable docs · mcp servers · agent skills | 5 | 2 | ai-catalog.json |
| www.ikeytz.com machine-readable docs · mcp servers · other callable resources | 5 | not checked | ai-catalog.json |
| agentready.market a2a agents · other callable resources | 4 | not checked | ai-catalog.json |
| assetlog.ai mcp servers · other callable resources | 4 | 1 | ai-catalog.json |
| bird.com machine-readable docs · openapi services · agent skills | 4 | not checked | ai-catalog.json |
| blckalpaca.at machine-readable docs · mcp servers · openapi services · other callable resources | 4 | not checked | ai-catalog.json |
| developers.cloudflare.com machine-readable docs · mcp servers · openapi services · agent skills | 4 | not checked | ai-catalog.json |
| fabtally.com a2a agents · openapi services · other callable resources | 4 | not checked | ai-catalog.json |
| fieldrobin.com a2a agents · mcp servers · openapi services · agent skills | 4 | not checked | ai-catalog.json |
| fluentedi.com machine-readable docs · mcp servers · other callable resources | 4 | not checked | ai-catalog.json |
| frankponcelet.com a2a agents · mcp servers · other callable resources · agent skills | 4 | 3 | ai-catalog.json |
| frihet.io a2a agents · machine-readable docs · mcp servers | 4 | 3 | ai-catalog.json |
| humanforai.dev machine-readable docs · mcp servers · openapi services · other callable resources | 4 | not checked | ard.json |
| maps.ikeytz.com machine-readable docs · mcp servers · other callable resources | 4 | not checked | ai-catalog.json |
| sparkbites.dev machine-readable docs · mcp servers · openapi services | 4 | not checked | ai-catalog.json |
| telnyx.com other callable resources | 4 | not checked | ai-catalog.json |
| upgradeagent.ai machine-readable docs · mcp servers · ard registries | 4 | not checked | ai-catalog.json |
| vercel.com machine-readable docs · other callable resources | 4 | 1 | ai-catalog.json |
| whisky-circle.info machine-readable docs · mcp servers · other callable resources | 4 | not checked | ai-catalog.json |
| wingmanprotocol.com a2a agents · machine-readable docs · openapi services · other callable resources | 4 | not checked | ai-catalog.json |
| worldmonitor.app mcp servers · openapi services · other callable resources | 4 | 1 | ai-catalog.json |
| aarnphm.xyz mcp servers · other callable resources | 3 | not checked | ai-catalog.json |
| angelsforagents.com a2a agents · mcp servers · openapi services | 3 | 1 | ai-catalog.json |
| catalogapi.com mcp servers · openapi services · agent skills | 3 | not checked | ai-catalog.json |
| drivings.com machine-readable docs · mcp servers · openapi services | 3 | not checked | ai-catalog.json |
| dynamicfeed.ai mcp servers · openapi services | 3 | not checked | ai-catalog.json |
| fly.io mcp servers · other callable resources | 3 | not checked | ai-catalog.json |
| getlago.com mcp servers · openapi services · agent skills | 3 | not checked | ai-catalog.json |
| infoaddict.com machine-readable docs · mcp servers · other callable resources | 3 | not checked | ai-catalog.json |
| iridiumhqmcp.com mcp servers · openapi services · other callable resources | 3 | not checked | ai-catalog.json |
| letagentsin.com mcp servers · openapi services · other callable resources | 3 | not checked | ai-catalog.json |
| longwatch.dev a2a agents · mcp servers · openapi services | 3 | 1 | ai-catalog.json |
| mcp.offlinecreatorstudio.com a2a agents · machine-readable docs · mcp servers | 3 | 2 | ai-catalog.json |
| meetsquad.ai agent skills | 3 | not checked | ai-catalog.json |
| octurasolutions.com a2a agents · mcp servers · other callable resources | 3 | not checked | ai-catalog.json |
| pingvalid.com a2a agents · mcp servers · other callable resources | 3 | not checked | ai-catalog.json |
| racecalendar.app mcp servers · openapi services · agent skills | 3 | 2 | ai-catalog.json |
| roboflow.com catalogues · mcp servers · openapi services | 3 | not checked | ai-catalog.json |
| rumors.app openapi services · other callable resources | 3 | not checked | ai-catalog.json |
| search.neurobird.com mcp servers · openapi services · other callable resources | 3 | 1 | ard.json |
| skillsmp.com agent skills | 3 | not checked | ai-catalog.json |
| speko.ai mcp servers · openapi services · agent skills | 3 | not checked | ai-catalog.json |
| vaaya.ai mcp servers · openapi services · agent skills | 3 | not checked | ai-catalog.json |
| veezee.io a2a agents · mcp servers · openapi services | 3 | not checked | ai-catalog.json |
| agenticdealernetwork.com machine-readable docs · mcp servers | 2 | 1 | ai-catalog.json |
| anglero.com mcp servers · other callable resources | 2 | not checked | ai-catalog.json |
| decisionlog.ai mcp servers · openapi services | 2 | not checked | ai-catalog.json |
| desvela.ai mcp servers | 2 | not checked | ard.json |
| elucora.com mcp servers · openapi services | 2 | not checked | ai-catalog.json |
| focxle.com mcp servers · other callable resources | 2 | not checked | ai-catalog.json |
| gentoura.com mcp servers · other callable resources | 2 | not checked | ai-catalog.json |
| gtmetrix.com mcp servers · openapi services | 2 | not checked | ai-catalog.json |
| igoyal.ai machine-readable docs · mcp servers | 2 | not checked | ard.json |
| img.ly mcp servers | 2 | not checked | ai-catalog.json |
| joinplexa.com mcp servers · ard registries | 2 | not checked | ai-catalog.json |
| latticenet.ai mcp servers · agent skills | 2 | not checked | ai-catalog.json |
| letshum.com mcp servers · agent skills | 2 | not checked | ard.json |
| licium.ai a2a agents · mcp servers | 2 | 1 | ai-catalog.json |
| llmpulse.ai mcp servers · openapi services | 2 | not checked | ai-catalog.json |
| loops.so mcp servers · other callable resources | 2 | not checked | ai-catalog.json |
| mcp.snowdata.ai catalogues · mcp servers | 2 | not checked | ai-catalog.json |
| mmatinca.eu machine-readable docs · agent skills | 2 | 2 | ai-catalog.json |
| neurobird.com a2a agents · catalogues | 2 | 1 | ard.json |
| neuronto.com mcp servers · ard registries | 2 | not checked | ard.json |
| offlinecreatorstudio.com a2a agents · mcp servers | 2 | 2 | ai-catalog.json |
| pickrate.io machine-readable docs · ard registries | 2 | 2 | ai-catalog.json |
| popdot.ai machine-readable docs · mcp servers | 2 | 1 | ai-catalog.json |
| propertylist.es mcp servers · other callable resources | 2 | not checked | ai-catalog.json |
| sgpropertydata.com mcp servers · openapi services | 2 | not checked | ai-catalog.json |
| smklog.com a2a agents · mcp servers | 2 | not checked | ai-catalog.json |
| sorted.fast mcp servers · other callable resources | 2 | not checked | ai-catalog.json |
| speedof.me mcp servers · other callable resources | 2 | not checked | ai-catalog.json |
| standard-10060.org mcp servers · other callable resources | 2 | not checked | ai-catalog.json |
| truealter.com mcp servers · other callable resources | 2 | 2 | ai-catalog.json |
| vocce.io mcp servers · openapi services | 2 | 1 | ai-catalog.json |
| wellknownhq.com mcp servers · ard registries | 2 | not checked | ai-catalog.json |
| xquik.com mcp servers · openapi services | 2 | not checked | ard.json |
| alpic.ai packages | 1 | not checked | ai-catalog.json |
| arc-relay.com mcp servers | 1 | not checked | ai-catalog.json |
| byimprint.com mcp servers | 1 | not checked | ai-catalog.json |
| cinevva.com mcp servers | 1 | not checked | ai-catalog.json |
| claw-link.dev mcp servers | 1 | not checked | ai-catalog.json |
| clearlist.me machine-readable docs | 1 | 1 | ai-catalog.json |
| compass.madeinro.eu machine-readable docs | 1 | 1 | ai-catalog.json |
| computesage.com mcp servers | 1 | not checked | ai-catalog.json |
| crevio.co mcp servers | 1 | not checked | ai-catalog.json |
| decision-anchor.com a2a agents | 1 | not checked | ai-catalog.json |
| deploytoagents.com a2a agents | 1 | 1 | ai-catalog.json |
| dynomatix.com mcp servers | 1 | not checked | ai-catalog.json |
| emisorasdecolombia.com mcp servers | 1 | not checked | ai-catalog.json |
| esimfinder.io mcp servers | 1 | not checked | ai-catalog.json |
| feranor.com mcp servers | 1 | not checked | ai-catalog.json |
| flint.network machine-readable docs | 1 | 1 | ai-catalog.json |
| growsurf.com mcp servers | 1 | not checked | ai-catalog.json |
| hemelion.com mcp servers | 1 | not checked | ai-catalog.json |
| hemmabo.com mcp servers | 1 | not checked | ai-catalog.json |
| idescat.cat mcp servers | 1 | not checked | ard.json |
| jobero.ai mcp servers | 1 | not checked | ai-catalog.json |
| leadproof.jessesay.chatgpt.site a2a agents | 1 | 1 | ai-catalog.json |
| loveoracle.app mcp servers | 1 | not checked | ai-catalog.json |
| magichour.ai openapi services | 1 | not checked | ai-catalog.json |
| mcp.gsc-fleet.ai other callable resources | 1 | 1 | ai-catalog.json |
| multilocale.com other callable resources | 1 | not checked | ard.json |
| myoutfitters.ca mcp servers | 1 | not checked | ai-catalog.json |
| peppolstatus.com mcp servers | 1 | 1 | ai-catalog.json |
| post-mesh.com mcp servers | 1 | not checked | ai-catalog.json |
| priorify.app mcp servers | 1 | not checked | ai-catalog.json |
| rafeblandford.com mcp servers | 1 | not checked | ard.json |
| realestatecapitale.ma mcp servers | 1 | not checked | ai-catalog.json |
| renoolab.fr agent skills | 1 | 1 | ai-catalog.json |
| rudderstack.com mcp servers | 1 | not checked | ai-catalog.json |
| snipget.ai mcp servers | 1 | not checked | ai-catalog.json |
| structa.me mcp servers | 1 | not checked | ai-catalog.json |
| tabularrecipe.com mcp servers | 1 | 1 | ai-catalog.json |
| tgboard.com mcp servers | 1 | not checked | ai-catalog.json |
| usertold.ai mcp servers | 1 | not checked | ai-catalog.json |
| usesideways.com mcp servers | 1 | not checked | ai-catalog.json |
| wattgap.com mcp servers | 1 | 1 | ai-catalog.json |
| workers-rights.com mcp servers | 1 | not checked | ai-catalog.json |
| www.siigo.com mcp servers | 1 | not checked | ai-catalog.json |
| y.uno openapi services | 1 | not checked | ai-catalog.json |
| zairalabs.ai mcp servers | 1 | not checked | ai-catalog.json |
| zernio.com mcp servers | 1 | not checked | ai-catalog.json |
Serve one JSON file describing what you offer, at both well-known paths while the rename settles. The publishing guide is the ten-minute version, and the free console shows exactly what a registry sees when it reads your domain. There is no application and no allowlist: publish the file and crawlers find it.