usefulapi

Hosted MCP servers for the tools you already use — connect from Claude, Cursor, or any MCP client. No local install, no key-juggling: authorize once and go.

Portal: https://usefulapi.io

Servers

Server	Category	Tools	Auth	Docs
Ably	realtime	17	API token	servers/ably/
Accelo	project-management	23	API token	servers/accelo/
Acuity Scheduling	calendar	20	API token	servers/acuity-scheduling/
Aircall	communications	27	API token	servers/aircall/
All Quiet	observability	13	API token	servers/all-quiet/
Amberflo	usage-metering	16	API token	servers/amberflo/
Anvil	documents	12	API token	servers/anvil/
Api2Pdf	documents	18	API token	servers/api2pdf/
api.video	video-hosting	17	API token	servers/apivideo/
Autumn	billing	20	API token	servers/autumn/
Bannerbear	image-generation	17	API token	servers/bannerbear/
Basis Theory	payments	17	API token	servers/basis-theory/
Bettermode	membership	10	API token	servers/bettermode/
Better Stack	observability	11	API token	servers/betterstack/
Bird	communications	18	API token	servers/bird/
Braintree	payments	9	API token	servers/braintree/
Canvas Medical	healthcare	4	API token	servers/canvas-medical/
Castle	fraud-detection	14	API token	servers/castle/
Census	analytics	15	API token	servers/census/
Chargebee	billing	15	API token	servers/chargebee/
Checkly	observability	24	API token	servers/checkly/
Checkout.com	payments	18	API token	servers/checkoutcom/
ClickUp	project-management	16	API token	servers/clickup/
ClinicalTrials.gov	health-data	7	API token	servers/clinicaltrialsgov/
Cliniko	healthcare	19	API token	servers/cliniko/
Codat	financial-data	30	API token	servers/codat/
Codecov	devops	24	API token	servers/codecov/
Codemagic	devops	9	API token	servers/codemagic/
Copper	crm	22	API token	servers/copper/
Cronitor	observability	8	API token	servers/cronitor/
Cronofy	calendar	10	API token	servers/cronofy/
Crowdin	localization	14	API token	servers/crowdin/
Customer.io	marketing	15	API token	servers/customerio/
DailyMed	health-data	12	API token	servers/dailymed/
DeepInfra	ai-infra	18	API token	servers/deepinfra/
DNSimple	dns	14	API token	servers/dnsimple/
DocRaptor	documents	6	API token	servers/docraptor/
Documenso	esignature	16	API token	servers/documenso/
DrChrono	healthcare	15	API token	servers/drchrono/
Dropbox Sign	esignature	12	API token	servers/dropbox-sign/
Drupal	documents	7	API token	servers/drupal/
Dub	devtools	22	API token	servers/dub/
EasyPost	shipping	13	API token	servers/easypost/
Ecwid	ecommerce	14	API token	servers/ecwid/
EmailOctopus	email	15	API token	servers/emailoctopus/
Estuary Flow	devops	15	API token	servers/estuary-flow/
fal.ai	image-generation	7	API token	servers/falai/
Finnhub	financial-data	17	API token	servers/finnhub/
Fireworks AI	ai-infra	16	API token	servers/fireworks/
Fitbit	health-data	17	API token	servers/fitbit/
Folk	crm	14	API token	servers/folk/
Formbricks	productivity	17	API token	servers/formbricks/
Foxy.io	ecommerce	16	API token	servers/foxyio/
Freshdesk	support	21	API token	servers/freshdesk/
Geoapify	maps	8	API token	servers/geoapify/
GetResponse	marketing	14	API token	servers/getresponse/
GitBook	documents	16	API token	servers/gitbook/
Groove	communications	18	API token	servers/groove-hq/
Gumroad	ecommerce	22	API token	servers/gumroad/
Harvest	project-management	22	API token	servers/harvest/
Health Gorilla	health-data	16	API token	servers/health-gorilla/
Healthchecks.io	observability	14	API token	servers/healthchecksio/
Healthie	healthcare	18	API token	servers/healthie/
HelpCrunch	support	12	API token	servers/helpcrunch/
Hetzner Cloud	cloud	32	API token	servers/hetzner-cloud/
Hypertune	feature-flags	7	API token	servers/hypertune/
Increase	fintech	20	API token	servers/increase/
Infermedica	healthcare	17	API token	servers/infermedica/
Inngest	dev-infra	11	API token	servers/inngest/
Instatus	observability	16	API token	servers/instatus/
Keap	marketing	20	API token	servers/keap/
Kinde	security	23	API token	servers/kinde/
Knack	no-code-database	11	API token	servers/knack/
KnowledgeOwl	knowledge-base	26	API token	servers/knowledgeowl/
Lago	billing	26	API token	servers/lago/
Lambda Labs	ai-infra	17	API token	servers/lambda-labs/
Laravel Forge	devops	19	API token	servers/laravel-forge/
Lemon Squeezy	payments	20	API token	servers/lemonsqueezy/
Linear	project-management	11	OAuth	servers/linear/
Lob	direct-mail	20	API token	servers/lob/
Loops	email	12	API token	servers/loops/
MagicBell	notifications	15	API token	servers/magicbell/
Mailchimp	email	20	API token	servers/mailchimp/
MailerLite	email	15	API token	servers/mailerlite/
MapTiler	maps	10	API token	servers/maptiler/
MaxMind minFraud	fraud-detection	6	API token	servers/maxmind-minfraud/
Memberful	membership	14	API token	servers/memberful/
Mercoa	payments	19	API token	servers/mercoa/
Metriport	healthcare	14	API token	servers/metriport/
Mindee	document-ai	6	API token	servers/mindee/
Missive	communications	21	API token	servers/missive/
Mistral	ai-infra	17	API token	servers/mistral/
Mixpanel	analytics	9	API token	servers/mixpanel/
Modern Treasury	payment-operations	19	API token	servers/modern-treasury/
NexHealth	healthcare	16	API token	servers/nexhealth/
Nomic Atlas	ai-infra	9	API token	servers/nomic-atlas/
Northflank	devops	19	API token	servers/northflank/
NPPES NPI Registry	health-data	4	API token	servers/nppes-npi-registry/
Numeral	tax	13	API token	servers/numeral/
Nylas	email	17	API token	servers/nylas/
Olark	chat	10	API token	servers/olark/
Onfido	fraud-detection	14	API token	servers/onfido/
openFDA	health-data	14	API token	servers/openfda/
OpenPhone	communications	16	API token	servers/openphone/
Orb	billing	28	API token	servers/orb/
Oura	health-data	10	API token	servers/oura/
OwnerRez	membership	25	API token	servers/ownerrez/
Parabol	project-management	23	API token	servers/parabol/
Particle Health	health-data	11	API token	servers/particlehealth/
People Data Labs	data-enrichment	10	API token	servers/peopledatalabs/
Persona	fraud-detection	14	API token	servers/persona/
Pipedrive	crm	21	API token	servers/pipedrive/
Plausible	analytics	10	API token	servers/plausible-analytics/
Polar	billing	26	API token	servers/polar-sh/
Portkey	ai-infra	18	API token	servers/portkey/
Printify	ecommerce	16	API token	servers/printify/
Quaderno	tax	25	API token	servers/quaderno/
Raisely	fundraising	25	API token	servers/raisely/
Re:amaze	support	17	API token	servers/re-amaze/
Recharge	ecommerce	17	API token	servers/recharge/
Reclaim.ai	calendar	17	API token	servers/reclaimai/
Recurly	billing	10	API token	servers/recurly/
Release Radar	devops	5	API token	servers/release-radar/
RxNorm	health-data	13	API token	servers/rxnorm/
SavvyCal	calendar	8	API token	servers/savvycal/
Scalingo	paas	23	API token	servers/scalingo/
Sendbird	chat	16	API token	servers/sendbird/
SendGrid	email	13	API token	servers/sendgrid/
SimpleTexting	communications	13	API token	servers/simpletexting/
Speechmatics	speech-to-text	9	API token	servers/speechmatics/
Spike.sh	observability	18	API token	servers/spikesh/
Squadcast	observability	18	API token	servers/squadcast/
StatusPal	observability	13	API token	servers/statuspal/
Stream	chat	15	API token	servers/stream/
Svix	dev-infra	19	API token	servers/svix/
Swell	ecommerce	18	API token	servers/swell/
Tailscale	devops	24	API token	servers/tailscale/
Text-Em-All	communications	14	API token	servers/text-em-all/
Trigger.dev	dev-infra	22	API token	servers/trigger-dev/
Twenty	crm	22	API token	servers/twenty/
Unkey	security	19	API token	servers/unkey/
Uploadcare	image-cdn	13	API token	servers/uploadcare/
Vital	health-data	23	API token	servers/vital/
WHOOP	health-data	10	API token	servers/whoop/
YouCanBook.me	calendar	20	API token	servers/youcanbookme/
Zendesk	support	21	API token	servers/zendesk/

More servers land here as they launch — each is a folder with its own README + server.json, and a tile on the portal.

What's in each folder

README.md — what the server does, tools, pricing, the "Add to Claude" snippet
server.json — the official MCP Registry record (namespace io.usefulapi/*), pointing at the hosted endpoint

License

MIT — see LICENSE. Documentation only; servers are hosted.