`list_categories`

159 servers reported a tool by this name when we called them. Names are chosen by whoever wrote the server, so two tools sharing a name do not have to do the same thing. We record what was reported, not what it does.

server	result when we called it	tools
b2bware-mcp https://mcp.b2bware.com/mcp	answers-mcp	163
lodi-kids-activities https://lodikidsactivities.com/api/mcp	answers-mcp	72
expensebot-remote https://mcp.expensebot.ai/mcp	answers-mcp	59
obriym-crm https://obriym-crm.com/api/mcp	answers-mcp	52
bookstore4agents https://bookstore4agents-mcp.bookstore4agents.workers.dev/mcp	answers-mcp	49
singularity-mcp https://mcp.x402layer.cc/mcp	answers-mcp	48
paper-search https://latex-tools.online/mcp	answers-mcp	41
pipeworx-gateway https://gateway.pipeworx.io/nasa-eonet/mcp	answers-mcp	37
pipeworx-gateway https://gateway.pipeworx.io/chucknorris/mcp	answers-mcp	35
pipeworx-gateway https://gateway.pipeworx.io/currents/mcp	answers-mcp	34
pipeworx-gateway https://gateway.pipeworx.io/remotive/mcp	answers-mcp	34
tamgara https://api.tamgara.com/api/mcp	answers-mcp	33
shumi https://mcp.shumi.ai/mcp	answers-mcp	31
ai-law-tracker https://ai-law-tracker.com/mcp	answers-mcp	30
helpmyagent https://api.helpmyagent.com/mcp	answers-mcp	30
genesis-directory https://aclimacao.sampa.br/mcp	answers-mcp	28
genesis-directory https://agenda.sampa.br/mcp	answers-mcp	28
genesis-directory https://belavista.sampa.br/mcp	answers-mcp	28
genesis-directory https://centro.sampa.br/mcp	answers-mcp	28
genesis-directory https://itaimbibi.sampa.br/mcp	answers-mcp	28
genesis-directory https://jardins.sampa.br/mcp	answers-mcp	28
genesis-directory https://liberdade.sampa.br/mcp	answers-mcp	28
genesis-directory https://moema.sampa.br/mcp	answers-mcp	28
genesis-directory https://pinheiros.sampa.br/mcp	answers-mcp	28
genesis-directory https://www.tatuape.sampa.br/mcp	answers-mcp	28
genesis-directory https://vilabuarque.sampa.br/mcp	answers-mcp	28
genesis-directory https://vilamadalena.sampa.br/mcp	answers-mcp	28
genesis-directory https://vilamariana.sampa.br/mcp	answers-mcp	28
monexus-terminal https://terminal.themonexus.com/mcp	answers-mcp	27
genesis-directory https://agenda.rio.br/mcp	answers-mcp	26
genesis-directory https://www.bogeyland.golf/mcp	answers-mcp	26
genesis-directory https://bomretiro.sampa.br/mcp	answers-mcp	26
genesis-directory https://campobelo.sampa.br/mcp	answers-mcp	26
genesis-directory https://www.dojoplus.co/mcp	answers-mcp	26
genesis-directory https://www.filipe.coffee/mcp	answers-mcp	26
genesis-directory https://www.graciebarrajiujitsu.site/mcp	answers-mcp	26
genesis-directory https://interlagos.sampa.br/mcp	answers-mcp	26
genesis-directory https://mono.juno.ventures/mcp	answers-mcp	26
genesis-directory https://www.olefutebol.com.br/mcp	answers-mcp	26
genesis-directory https://paraiso.sampa.br/mcp	answers-mcp	26
memestack https://mcp.memestack.ai/mcp	answers-mcp	20
tabak-brucker-shop https://mcp.tabak-brucker.de/mcp	answers-mcp	20
lahend https://lahend.ee/api/lahend-mcp/mcp	answers-mcp	20
hotlikeshop.com https://hotlikeshop.com/api/mcp	answers-mcp	19
furniture-hub https://ai-furniture-hub.onrender.com/mcp	answers-mcp	18
skill-store https://aiskillstore.io/mcp	answers-mcp	18
aidemos-mcp https://mcp.aidemos.com/mcp	answers-mcp	17
sponsorable https://app.sponsorable.com/mcp	answers-mcp	17
Lawstronaut MCP https://mcp.lawstronaut.com	answers-mcp	16
crossfin https://crossfin.dev/api/mcp	answers-mcp	16
mukoko-news https://news.mukoko.dev/mcp	answers-mcp	16
pollar-news https://mcp.pollar.news/mcp	answers-mcp	16
BotLens AI Gateway https://eaglesandangelsltd.mcp.getbotlens.com/mcp	answers-mcp	15
nothumansearch https://nothumansearch.ai/mcp	answers-mcp	14
betafinds https://betafinds.com/api/mcp	answers-mcp	14
bezal https://app.bezal.ai/api/mcp	answers-mcp	13
buywhere-catalog https://mcp.buywhere.ai/mcp	answers-mcp	13
Zipp https://zippfeed.com/mcp/	answers-mcp	13
dev.reqistry/mcp https://mcp.reqistry.dev/mcp	answers-mcp	13
buywhere-catalog https://api.buywhere.ai/mcp	answers-mcp	13
hyperstore https://mcp.store.hypergpt.ai/mcp	answers-mcp	13
notipo https://app.notipo.com/api/mcp	answers-mcp	13
wikiprompt https://mcp.wikiprompt.org/mcp	answers-mcp	12
partsgraph-catalog https://partsgraph.ai/api/mcp	answers-mcp	11
BotLens AI Gateway https://1845meat.mcp.getbotlens.com/mcp	answers-mcp	11
carbone-mcp https://mcp.carbone.io	answers-mcp	11
agent-tools https://agent-tools.cloud/mcp-discovery/	answers-mcp	11
uneed https://mcp.uneed.best/mcp	answers-mcp	10
gemalli-mcp https://gemalli.com/api/mcp	answers-mcp	10
programacion-siemens https://programacionsiemens.com/api/mcp	answers-mcp	10
Agentic.ai Directory https://agentic.ai/mcp	answers-mcp	10
zavod-stanki-mcp https://zavod-stanki.ru/mcp	answers-mcp	10
awesomeindie https://awesomeindie.com/api/mcp	answers-mcp	9
diagrams https://diagrams-mcp-production.up.railway.app/mcp	answers-mcp	9
BizClaw https://bizclaw.xyz/mcp	answers-mcp	9
bluecrane-forms https://mcp.bluecraneworks.ca/mcp	answers-mcp	8
1001locals-mcp https://api.1001locals.com/mcp	answers-mcp	8
com.texasratedpros/rankings https://www.texasratedpros.com/api/mcp	answers-mcp	8
UCP Checker https://ucpchecker.com/mcp	answers-mcp	8
zyla-api-hub https://mcp.zylalabs.com/mcp	answers-mcp	8
markit https://mark-it.co/api/mcp	answers-mcp	8
hvtracker https://hvtracker.net/mcp	answers-mcp	8
infyicon https://infyicon.com/mcp	answers-mcp	8
apistatuscheck https://apistatuscheck.com/api/mcp	answers-mcp	8
mymcptools https://mymcptools.com/api/mcp	answers-mcp	8
opendata-cat https://opendata.cat/api/mcp	answers-mcp	8
idfmetale-mcp https://mcp.idfmetale.pl/mcp	answers-mcp	8
LiveSpot https://livespot.se/mcp	answers-mcp	8
defici-marketplace https://defici.com/api/mcp	answers-mcp	7
just-headcovers https://justheadcovers.com/api/mcp	answers-mcp	7
vegasnearme https://api.vegasnearme.com/mcp	answers-mcp	7
ZaimHub — каталог МФО России https://zaimhub.com/api/mcp	answers-mcp	7
nAIm https://mcp.naim.janis7ewski.org/sse	answers-mcp	7
nAIm https://mcp.naim.janis7ewski.org/mcp	answers-mcp	7
greengooding https://mcp.greengooding.com/mcp	answers-mcp	7
SaaSforIT Directory https://fuechvghummojkgliyha.supabase.co/functions/v1/mcp	answers-mcp	7
marketing-skills-directory https://marketingskills.directory/wp-json/mkt/v1/mcp	answers-mcp	7
vibehacker https://vibehacker.com/api/mcp	answers-mcp	7
mcp-marketplace https://mcp-marketplace.io/api/mcp/mcp	answers-mcp	7
МФОХА — каталог МФО України https://mfoxa.com.ua/api/mcp	answers-mcp	7
botfriendly https://www.botfriendly.xyz/api/mcp	answers-mcp	7
at-directory https://mcp.agenticterminal.ai/mcp	answers-mcp	6
bedrocknews.com https://api.bedrocknews.com/api/mcp	answers-mcp	6
sigistry https://clauderegistry.com/mcp	answers-mcp	6
qumge-skills https://qumge.com/mcp	answers-mcp	6
sigistry https://sigistry.com/mcp	answers-mcp	6
stierproducts https://mcp.stierproducts.com/mcp	answers-mcp	6
agent-papers https://agentpapers.dev/api/mcp	answers-mcp	6
buy-my-agent https://www.buy-my-agent.com/api/mcp	answers-mcp	6
capmus https://mcp.capmus.com/mcp	answers-mcp	6
supost https://mcp.supost.com/mcp	answers-mcp	6
digche-icons https://digche.vercel.app/api/mcp	answers-mcp	6
mcp-marketplace-search https://mcp.pianam.cn/search/sse	answers-mcp	6
inutriplan-supplement-mcp https://mcp.inutriplan.com/mcp	answers-mcp	6
showmestepbystep-mcp https://www.showmestepbystep.com/api/mcp	answers-mcp	6
pifini https://pifini.net/api/mcp	answers-mcp	6
mcpjunction https://mcpjunction.ai/mcp	answers-mcp	5
robohub https://robohub.app/api/mcp	answers-mcp	5
GallanDigital https://gallandigital.com/api/mcp	answers-mcp	5
getagentictools https://getagentictools.com/api/mcp	answers-mcp	5
mamanida-mcp https://mamanida.com/mcp	answers-mcp	5
modelsagree https://modelsagree.com/mcp	answers-mcp	5
Remote Jobs Center https://remotejobscenter.com/mcp	answers-mcp	5
tulimoa https://mcp.tulimoa.com/mcp	answers-mcp	5
kalicart-global https://dashboard.kalicart.com/mcp-public	answers-mcp	5
ShareGrokBots https://mcp.sharegrokbots.com/mcp	answers-mcp	5
losbeto https://api.losbeto.xyz/mcp	answers-mcp	5
Noticiel https://noticiel-mcp.wadie.workers.dev/mcp	answers-mcp	5
contextoverflow https://contextoverflow.org/mcp	answers-mcp	5
heyspark-mcp-server https://mcp.heyspark.co/mcp	answers-mcp	4
bonizu https://bonizu.com/api/mcp	answers-mcp	4
patent-gap https://patentgap.dropwatchhq.com/mcp	answers-mcp	4
infypng https://infypng.com/mcp	answers-mcp	4
infysvg https://infysvg.com/mcp	answers-mcp	4
merchsage-sponsors https://api.merchsage.com/mcp/sponsors	answers-mcp	4
tantra-authority-catalog-remote https://mcp-catalog.soullight.workers.dev/mcp	answers-mcp	4
Australian Manufacturing Directory https://ausmanufacturingdirectory.com/mcp	answers-mcp	4
Australian Manufacturing Directory https://mcp.ausmanufacturingdirectory.com/mcp	answers-mcp	4
cleanslice-mcp https://mcp.cleanslice.org/mcp	answers-mcp	4
gph-intelligence https://gph-mcp-server.pages.dev/mcp	answers-mcp	4
agentic-prompt https://agentic-prompt.com/mcp	answers-mcp	4
email-playbook https://docs.osamahassouna.com/api/mcp	answers-mcp	4
nova-scotia-open-data https://scotiasignal.ca/mcp	answers-mcp	4
mcp-catalog https://mcp-catalog.ru/mcp	answers-mcp	4
directree https://www.directree.io/api/mcp	answers-mcp	4
torneo https://torneo.ai/api/mcp	answers-mcp	4
mcp-typescript server on vercel https://www.failmodes.com/api/mcp	answers-mcp	4
shortlist-price-index https://shortlist-mcp.vercel.app/mcp	answers-mcp	4
cancer-support-hub https://cancersupport.sig.ai/api/mcp	answers-mcp	4
thebetterbuy-catalog https://mcp.thebetterbuy.co.uk	answers-mcp	4
travelmcp-directory https://omnitravel.ai/mcp	answers-mcp	3
mcp-typescript server on vercel https://claudeers.com/api/mcp/mcp	answers-mcp	3
fixou-mcp https://mcp.fixou.fr/mcp	answers-mcp	3
AICatalog https://aicatalog.com.ua/api/v1/mcp	answers-mcp	3
agentswitchboard https://agentswitchboard.dev/api/mcp	answers-mcp	3
comparefairly https://comparefairly.com/mcp	answers-mcp	3
mcp-typescript server on vercel https://openaffiliate.dev/api/mcp	answers-mcp	3
koekatsu https://mcp.datasetsearch.jp/	answers-mcp	3
whataplan https://api.whataplan.net/mcp	answers-mcp	3

159 of these answered an MCP handshake on the day we checked. That is not a promise the tool works, only that the server was running and told us the tool existed.