Index / ARD publishers

ARD publishers: 301 domains serve an Agentic Resource Discovery manifest

Every one was verified by fetching the manifest, not taken from another registry's word, out of 376,025 domains checked. The 250 listed below are those whose declared resources we also index, together declaring 4,491 of them. The remaining 51 serve a manifest on one host while the resources it declares belong to another, the way connectors-skills.zapier.com publishes for zapier.com, so they appear here under the domain that owns the resources.

What is an ARD publisher?

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.

What about domains with no manifest?

This list is manifest publishers only, because that is what the specification defines and what the title claims. Plenty of domains run an MCP server without ever publishing a manifest, and those are indexed too and have their own page at /ard-publishers/<domain>, describing what we observed rather than what they declared. They are not counted here because they have not published anything to count. If that is your domain, publishing a manifest takes about ten minutes and lists everything you offer, not only what MCP happens to expose.

Which path do they actually use?

Version 0.91 renamed the manifest to /.well-known/ard.json, and the deployed base has not followed: 181 of these publishers still serve the older /.well-known/ai-catalog.json and only 69 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.

The complete list

PublisherResourcesAnswering Manifest
huggingface.co
mcp servers · ard registries · agent skills
2,0231,811ai-catalog.json
github.com
mcp servers · openapi services · plugin manifests · agent skills
833829ai-catalog.json
api.live.nevermined.app
a2a agents · openapi services · other callable resources · ard registries
190172ard.json
api.mcp.github.com
mcp servers
148148ai-catalog.json
2s.io
mcp servers · openapi services
115115ai-catalog.json
capability.network
mcp servers · openapi services · other callable resources
4848ai-catalog.json
zapier.com
catalogues · machine-readable docs · mcp servers · openapi services
4545ai-catalog.json
gstcranes.com
a2a agents · machine-readable docs · mcp servers · openapi services
3737ai-catalog.json
built2winweb.com
machine-readable docs · mcp servers · openapi services · other callable resources
2828ai-catalog.json
scvd.store
a2a agents · mcp servers · openapi services · other callable resources
2222ard.json
datasignalslab.com
mcp servers
2020ai-catalog.json
www.pathwren.workers.dev
a2a agents · mcp servers · other callable resources
1717ard.json
apify.com
machine-readable docs · mcp servers · openapi services · other callable resources
1616ai-catalog.json
ausca.com
mcp servers · other callable resources · agent skills
1515ard.json
ultimaluz.com
mcp servers · other callable resources
1413ai-catalog.json
clickhouse.com
machine-readable docs · mcp servers · agent skills
1212ai-catalog.json
eprimo.de
machine-readable docs · other callable resources
1212ai-catalog.json
hostinger.com
openapi services · packages
1210ai-catalog.json
jacobcampbellrealtor.com
machine-readable docs · mcp servers · openapi services
122ai-catalog.json
renoolab.fr
a2a agents · mcp servers · agent skills
1211ard.json
neon.com
mcp servers · agent skills
1110ai-catalog.json
wikijuridica.com.br
machine-readable docs · mcp servers · openapi services · other callable resources
1111ai-catalog.json
agentcommunity.org
machine-readable docs · mcp servers · openapi services · other callable resources
1010ai-catalog.json
agentic-mermaid.dev
machine-readable docs · mcp servers · other callable resources · agent skills
1010ai-catalog.json
airtable.com
mcp servers · openapi services · agent skills
1010ai-catalog.json
anahana.com
machine-readable docs · mcp servers · openapi services · other callable resources
1010ard.json
api.delx.ai
a2a agents · catalogues · machine-readable docs · mcp servers
1010ai-catalog.json
aux.prdictionedge.ai
a2a agents · machine-readable docs · mcp servers · openapi services
1010ard.json
mandateshield.com
a2a agents · mcp servers · openapi services · other callable resources
1010ai-catalog.json
surrealdb.com
machine-readable docs · mcp servers · openapi services · other callable resources
1010ai-catalog.json
tweetsmash.com
a2a agents · machine-readable docs · mcp servers · openapi services
1010ai-catalog.json
0xarchive.io
machine-readable docs · openapi services · other callable resources
99ai-catalog.json
agents.traderszone.net
mcp servers · openapi services · ard registries
99ai-catalog.json
aicontentdrop.com
a2a agents · machine-readable docs · graphql apis · openapi services
99ai-catalog.json
clearlist.me
a2a agents · machine-readable docs · mcp servers · openapi services
99ai-catalog.json
nexez.ai
mcp servers · openapi services
99ai-catalog.json
www.skillsboard.sh
machine-readable docs · mcp servers · openapi services · other callable resources
99ai-catalog.json
commerce.delx.ai
a2a agents · catalogues · machine-readable docs · mcp servers
88ai-catalog.json
momentic.ai
machine-readable docs · mcp servers · other callable resources · plugin manifests
88ai-catalog.json
outlit.ai
a2a agents · machine-readable docs · mcp servers · openapi services
87ai-catalog.json
plainrouter.com
machine-readable docs · mcp servers · openapi services · other callable resources
88ai-catalog.json
railway.com
machine-readable docs · graphql apis · mcp servers · openapi services
88ard.json
snowdata.ai
catalogues · mcp servers · openapi services · ard registries
86ai-catalog.json
sssnack.com
a2a agents · mcp servers · openapi services · other callable resources
88ai-catalog.json
ticktape.cc
machine-readable docs · mcp servers · openapi services · other callable resources
88ai-catalog.json
adadiamonds.com
machine-readable docs · mcp servers · openapi services · other callable resources
77ard.json
agentgates.ai
a2a agents · mcp servers · openapi services · other callable resources
77ai-catalog.json
coworkingview.com
machine-readable docs · openapi services · other callable resources · packages
75ai-catalog.json
cuvo.co
machine-readable docs · mcp servers · openapi services · other callable resources
77ai-catalog.json
delx.ai
a2a agents · catalogues · machine-readable docs · mcp servers
77ai-catalog.json
eodly.io
machine-readable docs · mcp servers · openapi services · agent skills
77ard.json
politicalcomms.com
a2a agents · machine-readable docs · mcp servers · openapi services
77ai-catalog.json
prismfact.com
mcp servers · openapi services · other callable resources
77ai-catalog.json
relaystation.ai
machine-readable docs · mcp servers · openapi services
77ai-catalog.json
snowsure.ai
a2a agents · catalogues · mcp servers · openapi services
77ai-catalog.json
tv.madeinro.eu
a2a agents · machine-readable docs · mcp servers · openapi services
77ai-catalog.json
www.winpot.mx
machine-readable docs · mcp servers · openapi services
77ai-catalog.json
yappy.biz
a2a agents · machine-readable docs · mcp servers · openapi services
77ai-catalog.json
amplitude.com
mcp servers · openapi services · agent skills
63ai-catalog.json
blitzreels.com
machine-readable docs · mcp servers · other callable resources · agent skills
66ai-catalog.json
certifier.io
machine-readable docs · mcp servers · openapi services
66ard.json
dnsdoctor.dev
machine-readable docs · mcp servers · openapi services
66ard.json
dribba.com
a2a agents · machine-readable docs · mcp servers · openapi services
66ai-catalog.json
f1laps.com
machine-readable docs · mcp servers · agent skills
66ai-catalog.json
inclusifyapp.com
machine-readable docs · other callable resources
66ai-catalog.json
jobspipe.dev
machine-readable docs · mcp servers · openapi services · other callable resources
66ard.json
mitosislabs.ai
a2a agents · mcp servers · other callable resources · agent skills
66ard.json
negativeev.com
a2a agents · machine-readable docs · mcp servers · openapi services
66ai-catalog.json
padlet.com
machine-readable docs · mcp servers · openapi services · agent skills
66ai-catalog.json
performa.ai
machine-readable docs · other callable resources
66ai-catalog.json
pickrate.io
machine-readable docs · mcp servers · ard registries
65ai-catalog.json
publica.la
machine-readable docs · mcp servers · other callable resources
66ard.json
saasdossier.com
a2a agents · datasets · machine-readable docs · mcp servers
66ai-catalog.json
speakeasy.com
machine-readable docs · mcp servers · openapi services · plugin manifests
66ai-catalog.json
www.ikeytz.com
machine-readable docs · mcp servers · other callable resources
66ard.json
www.lelo.com
machine-readable docs · openapi services
66ai-catalog.json
aradia.com
machine-readable docs · other callable resources
55ai-catalog.json
avizo.ro
machine-readable docs · mcp servers · openapi services · agent skills
55ai-catalog.json
deepsearch.app
machine-readable docs · mcp servers · openapi services · agent skills
55ai-catalog.json
desvela.dev
mcp servers · ard registries
55ard.json
frihet.io
a2a agents · machine-readable docs · mcp servers · openapi services
55ai-catalog.json
geo-parity.com
machine-readable docs · mcp servers · other callable resources
55ard.json
immersivecommons.com
a2a agents · mcp servers · openapi services · agent skills
55ard.json
licium.ai
a2a agents · mcp servers · openapi services
55ai-catalog.json
llmrt-companion.manhliemcn4euwlu.workers.dev
a2a agents · catalogues · machine-readable docs · mcp servers
5not checkedard.json
loopingagent.com
machine-readable docs · mcp servers
55ai-catalog.json
mailbox.bot
a2a agents · agent descriptors (acp, oasf, agentfacts) · mcp servers · openapi services
55ai-catalog.json
maps.ikeytz.com
machine-readable docs · mcp servers · other callable resources
55ard.json
mmatinca.eu
machine-readable docs · mcp servers · openapi services · agent skills
55ai-catalog.json
nextjs.org
machine-readable docs
55ai-catalog.json
notepad.page
machine-readable docs · other callable resources
55ai-catalog.json
primitive.dev
a2a agents · mcp servers · openapi services · agent skills
55ai-catalog.json
quicknode.com
a2a agents · mcp servers · openapi services · other callable resources
55ai-catalog.json
supademo.com
machine-readable docs · openapi services · other callable resources
55ai-catalog.json
telnyx.com
machine-readable docs · openapi services · other callable resources
55ai-catalog.json
the-stall.intuitek.ai
mcp servers
55ard.json
travel-trends.mmatinca.eu
a2a agents · machine-readable docs · mcp servers · agent skills
55ai-catalog.json
vercel.com
machine-readable docs · openapi services · other callable resources
55ai-catalog.json
agentready.market
a2a agents · other callable resources
44ai-catalog.json
aifordatabase.com
machine-readable docs · mcp servers · openapi services
44ard.json
anglero.com
machine-readable docs · mcp servers · other callable resources
44ard.json
aptos.dev
machine-readable docs · mcp servers · openapi services · agent skills
44ai-catalog.json
assetlog.ai
mcp servers · other callable resources
44ai-catalog.json
bird.com
machine-readable docs · openapi services · agent skills
44ard.json
blckalpaca.at
machine-readable docs · mcp servers · openapi services · other callable resources
44ai-catalog.json
developers.cloudflare.com
machine-readable docs · mcp servers · openapi services · agent skills
44ai-catalog.json
fabtally.com
a2a agents · openapi services · other callable resources
44ai-catalog.json
fieldrobin.com
a2a agents · mcp servers · openapi services · agent skills
44ard.json
fluentedi.com
machine-readable docs · mcp servers · other callable resources
44ai-catalog.json
frankponcelet.com
a2a agents · mcp servers · other callable resources · agent skills
44ai-catalog.json
getemboss.ai
a2a agents · machine-readable docs · mcp servers · openapi services
44ard.json
growsurf.com
machine-readable docs · mcp servers · openapi services · other callable resources
44ai-catalog.json
humanforai.dev
machine-readable docs · mcp servers · openapi services · other callable resources
44ard.json
idescat.cat
machine-readable docs · mcp servers · openapi services
44ard.json
plumbline-hq.github.io
machine-readable docs · other callable resources
44ard.json
sparkbites.dev
machine-readable docs · mcp servers · openapi services
44ai-catalog.json
upgradeagent.ai
machine-readable docs · mcp servers · ard registries
44ai-catalog.json
whisky-circle.info
machine-readable docs · mcp servers · other callable resources
44ai-catalog.json
wingmanprotocol.com
a2a agents · machine-readable docs · openapi services · other callable resources
44ai-catalog.json
worldmonitor.app
mcp servers · openapi services · other callable resources
44ai-catalog.json
aarnphm.xyz
mcp servers · other callable resources
33ai-catalog.json
angelsforagents.com
a2a agents · mcp servers · openapi services
33ai-catalog.json
appwrite.io
mcp servers · openapi services
33ai-catalog.json
catalogapi.com
mcp servers · openapi services · agent skills
33ai-catalog.json
compass.madeinro.eu
machine-readable docs · mcp servers · agent skills
33ai-catalog.json
console.mermail.app
a2a agents · mcp servers · openapi services
33ard.json
drivings.com
machine-readable docs · mcp servers · openapi services
33ai-catalog.json
dynamicfeed.ai
mcp servers · openapi services
33ai-catalog.json
flint.network
machine-readable docs · mcp servers · openapi services
33ai-catalog.json
flipdish.com
machine-readable docs · mcp servers
33ai-catalog.json
fly.io
mcp servers · other callable resources
33ai-catalog.json
getlago.com
mcp servers · openapi services · agent skills
33ai-catalog.json
infoaddict.com
machine-readable docs · mcp servers · other callable resources
33ai-catalog.json
iridiumhqmcp.com
mcp servers · openapi services · other callable resources
33ai-catalog.json
keywordise.com
machine-readable docs · mcp servers
33ard.json
letagentsin.com
mcp servers · openapi services · other callable resources
33ai-catalog.json
longwatch.dev
a2a agents · mcp servers · openapi services
33ai-catalog.json
mcp.offlinecreatorstudio.com
a2a agents · machine-readable docs · mcp servers
33ai-catalog.json
meetsquad.ai
agent skills
3not checkedai-catalog.json
neuronto.com
catalogues · mcp servers · ard registries
33ard.json
nulliverba.ol-lo.workers.dev
a2a agents · agent skills
33ard.json
octurasolutions.com
a2a agents · machine-readable docs · mcp servers
33ai-catalog.json
offlinecreatorstudio.com
a2a agents · machine-readable docs · mcp servers
33ai-catalog.json
pingvalid.com
a2a agents · machine-readable docs · mcp servers
33ai-catalog.json
racecalendar.app
mcp servers · openapi services · agent skills
33ai-catalog.json
roboflow.com
catalogues · mcp servers · openapi services
31ai-catalog.json
rumors.app
openapi services · other callable resources
33ai-catalog.json
search.neurobird.com
mcp servers · openapi services · other callable resources
33ard.json
skillsmp.com
agent skills
33ai-catalog.json
speko.ai
mcp servers · openapi services · agent skills
33ai-catalog.json
spoolis.com
mcp servers · openapi services · other callable resources
33ard.json
trytoolscout.org
a2a agents · mcp servers · openapi services
33ard.json
vaaya.ai
mcp servers · openapi services · agent skills
33ai-catalog.json
veezee.io
a2a agents · mcp servers · openapi services
33ai-catalog.json
www.knownspace.space
machine-readable docs
33ard.json
agenticdealernetwork.com
machine-readable docs · mcp servers
22ai-catalog.json
ardregistry.net
openapi services · agent skills
22ard.json
decisionlog.ai
mcp servers · openapi services
22ai-catalog.json
desvela.ai
mcp servers
22ard.json
elucora.com
mcp servers · openapi services
22ai-catalog.json
focxle.com
mcp servers · packages
22ai-catalog.json
gentoura.com
mcp servers · other callable resources
22ai-catalog.json
gtmetrix.com
mcp servers · openapi services
22ai-catalog.json
igoyal.ai
machine-readable docs · mcp servers
22ard.json
img.ly
mcp servers
21ai-catalog.json
joinplexa.com
mcp servers · ard registries
22ai-catalog.json
latticenet.ai
mcp servers · agent skills
22ai-catalog.json
leadproof.jessesay.chatgpt.site
a2a agents · mcp servers
22ai-catalog.json
letshum.com
mcp servers · agent skills
22ard.json
llmpulse.ai
mcp servers · openapi services
22ai-catalog.json
loops.so
mcp servers · plugin manifests
22ai-catalog.json
mcp.gsc-fleet.ai
mcp servers · other callable resources
22ai-catalog.json
mcp.snowdata.ai
catalogues · mcp servers
22ai-catalog.json
meo-preflight2.twooscoops.workers.dev
mcp servers · openapi services
22ard.json
neurobird.com
a2a agents · catalogues
22ard.json
pay.neuronto.com
openapi services · other callable resources
22ard.json
popdot.ai
machine-readable docs · mcp servers
22ai-catalog.json
propertylist.es
mcp servers · other callable resources
22ai-catalog.json
sgpropertydata.com
mcp servers · openapi services
22ai-catalog.json
smklog.com
a2a agents · mcp servers
22ai-catalog.json
sorted.fast
mcp servers · other callable resources
22ai-catalog.json
speedof.me
mcp servers · webmcp browser tools
22ai-catalog.json
standard-10060.org
mcp servers · other callable resources
22ai-catalog.json
truealter.com
mcp servers · other callable resources
22ai-catalog.json
vocce.io
mcp servers · openapi services
21ai-catalog.json
wellknownhq.com
mcp servers · ard registries
22ai-catalog.json
xquik.com
mcp servers · openapi services
22ard.json
y.uno
mcp servers · openapi services
22ai-catalog.json
alpic.ai
packages
11ai-catalog.json
app.agentmesh.link
a2a agents
11ard.json
arc-relay.com
mcp servers
11ai-catalog.json
aurorareach.com
mcp servers
11ard.json
beeimg.com
mcp servers
11ai-catalog.json
bitso.com
mcp servers
11ai-catalog.json
buildkite.com
mcp servers
11ai-catalog.json
buyer.agentsanctuary.dev
a2a agents
11ard.json
byimprint.com
mcp servers
11ai-catalog.json
church-of-ai.org
a2a agents
1not checkedard.json
cinevva.com
mcp servers
11ai-catalog.json
cjis.redravenpress.net
agent skills
1not checkedard.json
claw-link.dev
mcp servers
11ai-catalog.json
computesage.com
mcp servers
11ai-catalog.json
crevio.co
mcp servers
11ai-catalog.json
decision-anchor.com
a2a agents
11ai-catalog.json
dephealth.dsh.sh
mcp servers
11ard.json
deploytoagents.com
a2a agents
11ai-catalog.json
digitalagentcafe.com
other callable resources
11ard.json
dynomatix.com
mcp servers
11ai-catalog.json
emisorasdecolombia.com
mcp servers
11ai-catalog.json
esimfinder.io
mcp servers
1not checkedai-catalog.json
extract.paypercall.dev
mcp servers
11ard.json
feranor.com
mcp servers
11ard.json
findanmcp.com
mcp servers
11ard.json
hemelion.com
mcp servers
11ai-catalog.json
hemmabo.com
mcp servers
11ard.json
itcomlanger.de
agent skills
11ai-catalog.json
jobero.ai
mcp servers
11ard.json
llmstxtmcp.dev
mcp servers
11ard.json
loveoracle.app
mcp servers
11ai-catalog.json
magichour.ai
openapi services
11ai-catalog.json
mcp-selection-lab-production.up.railway.app
mcp servers
11ai-catalog.json
multilocale.com
plugin manifests
11ard.json
myoutfitters.ca
mcp servers
11ai-catalog.json
peppolstatus.com
mcp servers
11ai-catalog.json
post-mesh.com
mcp servers
11ai-catalog.json
preservation.redravenpress.net
agent skills
1not checkedard.json
priorify.app
mcp servers
11ai-catalog.json
publicairelay.com
a2a agents
11ard.json
rafeblandford.com
mcp servers
11ard.json
realestatecapitale.ma
mcp servers
11ai-catalog.json
rssfeedmcp.dev
mcp servers
11ard.json
rudderstack.com
mcp servers
11ai-catalog.json
sharewatch.ai
mcp servers
11ard.json
smart-thermostat.co.uk
mcp servers
11ai-catalog.json
smartbench.ai
ard registries
11ai-catalog.json
snipget.ai
mcp servers
11ai-catalog.json
structa.me
mcp servers
11ai-catalog.json
tabularrecipe.com
mcp servers
11ai-catalog.json
tgboard.com
mcp servers
11ai-catalog.json
travel.agentplayground.dev
a2a agents
11ard.json
travelfinder.online
a2a agents
1not checkedard.json
usertold.ai
mcp servers
11ai-catalog.json
usesideways.com
mcp servers
11ai-catalog.json
wattgap.com
mcp servers
11ai-catalog.json
waybackmcp.com
mcp servers
11ard.json
workers-rights.com
mcp servers
11ai-catalog.json
worldorder.club
mcp servers
11ard.json
www.siigo.com
mcp servers
11ai-catalog.json
zairalabs.ai
mcp servers
11ai-catalog.json
zernio.com
mcp servers
11ai-catalog.json

How do I become an ARD publisher?

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.

Method. Each domain here was checked by requesting both known manifest paths and requiring the response to parse as an ARD manifest. Domains that other registries name as publishers but that serve no manifest are excluded: of 5,491 such names, only 28 served one, so listing the rest would make this a directory of assumptions rather than a record of what exists. Reachability of individual endpoints is our own probe and says nothing about trust, quality or safety.