How do I install Usefulapi?

Usefulapi is a remote plugin. You do not need to install anything locally. Add the server URL to your AI app's MCP configuration and you are ready to go.

Is Usefulapi safe to use?

Yes. Usefulapi passed MCP Marketplace's automated security scan with a score of 10/10 (low risk). Every server on MCP Marketplace is security-scanned before it's listed; see the full security report on this page for the findings and permissions.

What AI apps work with Usefulapi?

Usefulapi uses the Model Context Protocol (MCP) and works with any MCP-compatible AI app, including Claude, ChatGPT / Codex, Gemini, Copilot, Cursor, and more.

Back to Browse

Usefulapi MCP Server

by M190

Developer ToolsLow Risk10.0MCP RegistryRemote

Free

Server data from the Official MCP Registry

Read appointments, types, calendars and availability; create, cancel or reschedule bookings.

About

Read appointments, types, calendars and availability; create, cancel or reschedule bookings.

Remote endpoints: streamable-http: https://acuity-scheduling.usefulapi.io/mcp

Security Report

10.0

Low Risk10.0Low Risk

Valid MCP server (1 strong, 0 medium validity signals). No known CVEs in dependencies. Imported from the Official MCP Registry. Trust signals: trusted author (65/65 approved). 1 finding(s) downgraded by scanner intelligence.

18 tools verified · Open access · 1 issue found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

file_system

Check that this permission is expected for this type of plugin.

clipboard

Check that this permission is expected for this type of plugin.

HTTP Network Access

Connects to external APIs or services over the internet.

How to Connect

Remote Plugin

No local installation needed. Your AI client connects to the remote endpoint directly.

Add this to your MCP configuration to connect:

{
  "mcpServers": {
    "io-usefulapi-acuity-scheduling": {
      "url": "https://acuity-scheduling.usefulapi.io/mcp"
    }
  }
}

Documentation

View on GitHub

From the project's GitHub README.

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
Linear	project-management	11	OAuth	servers/linear/
Better Stack	observability	11	API token	servers/betterstack/
Loops	email	12	API token	servers/loops/
Mixpanel	analytics	9	API token	servers/mixpanel/
Fireworks AI	ai-infra	16	API token	servers/fireworks/
Uploadcare	image-cdn	13	API token	servers/uploadcare/
Cronitor	observability	8	API token	servers/cronitor/
MailerLite	email	15	API token	servers/mailerlite/
Checkly	observability	24	API token	servers/checkly/
Mindee	document-ai	6	API token	servers/mindee/
DocRaptor	documents	6	API token	servers/docraptor/
Mistral	ai-infra	17	API token	servers/mistral/
Orb	billing	28	API token	servers/orb/
Chargebee	billing	15	API token	servers/chargebee/
Lob	direct-mail	20	API token	servers/lob/
GoCardless	payments	17	API token	servers/gocardless/
Recurly	billing	10	API token	servers/recurly/
Braintree	payments	9	API token	servers/braintree/
Increase	fintech	20	API token	servers/increase/
Modern Treasury	payment-operations	19	API token	servers/modern-treasury/
MagicBell	notifications	15	API token	servers/magicbell/
Crowdin	localization	14	API token	servers/crowdin/
Dropbox Sign	esignature	12	API token	servers/dropbox-sign/
EasyPost	shipping	13	API token	servers/easypost/
DNSimple	dns	14	API token	servers/dnsimple/
Bird	communications	18	API token	servers/bird/
Ably	realtime	17	API token	servers/ably/
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/
Cliniko	healthcare	19	API token	servers/cliniko/
Codat	financial-data	30	API token	servers/codat/
Cronofy	calendar	10	API token	servers/cronofy/
Customer.io	marketing	15	API token	servers/customerio/
Healthie	healthcare	18	API token	servers/healthie/
Hypertune	feature-flags	7	API token	servers/hypertune/
Lago	billing	26	API token	servers/lago/
Laravel Forge	devops	19	API token	servers/laravel-forge/
Lemon Squeezy	payments	20	API token	servers/lemonsqueezy/
MapTiler	maps	10	API token	servers/maptiler/
Mercoa	payments	19	API token	servers/mercoa/
Northflank	devops	19	API token	servers/northflank/
Nylas	email	17	API token	servers/nylas/
Sendbird	chat	16	API token	servers/sendbird/
Speechmatics	speech-to-text	9	API token	servers/speechmatics/
Stream	chat	15	API token	servers/stream/
Swell	ecommerce	18	API token	servers/swell/
Quaderno	tax	25	API token	servers/quaderno/
MaxMind minFraud	fraud-detection	6	API token	servers/maxmind-minfraud/
People Data Labs	data-enrichment	10	API token	servers/peopledatalabs/
Scalingo	paas	23	API token	servers/scalingo/
Metriport	healthcare	14	API token	servers/metriport/
Vital	health-data	23	API token	servers/vital/
Parabol	project-management	23	API token	servers/parabol/
KnowledgeOwl	knowledge-base	26	API token	servers/knowledgeowl/
Raisely	fundraising	25	API token	servers/raisely/
YouCanBook.me	calendar	20	API token	servers/youcanbookme/
Memberful	membership	14	API token	servers/memberful/
Knack	no-code-database	11	API token	servers/knack/
Olark	chat	10	API token	servers/olark/
All Quiet	observability	13	API token	servers/all-quiet/
SendGrid	email	13	API token	servers/sendgrid/
Keap	marketing	20	API token	servers/keap/
Recharge	ecommerce	17	API token	servers/recharge/
Missive	communications	21	API token	servers/missive/
Numeral	tax	13	API token	servers/numeral/
Census	analytics	15	API token	servers/census/
Portkey	ai-infra	18	API token	servers/portkey/
SimpleTexting	communications	13	API token	servers/simpletexting/
EmailOctopus	email	15	API token	servers/emailoctopus/
Healthchecks.io	observability	14	API token	servers/healthchecksio/
Instatus	observability	16	API token	servers/instatus/
StatusPal	observability	13	API token	servers/statuspal/
Spike.sh	observability	18	API token	servers/spikesh/
Groove	communications	18	API token	servers/groove-hq/
Bettermode	membership	10	API token	servers/bettermode/
Ecwid	ecommerce	14	API token	servers/ecwid/
Foxy.io	ecommerce	16	API token	servers/foxyio/
Acuity Scheduling	calendar	20	API token	servers/acuity-scheduling/
Squadcast	observability	18	API token	servers/squadcast/

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.

Reviews

No reviews yet

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Usefulapi MCP Server

About

Security Report

Findings (1)

Permissions Required

How to Connect

Documentation

usefulapi

Servers

What's in each folder

License

Reviews

No reviews yet

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