Claude + Acuity Scheduling: What the Integration Can (and Can't) Do in 2026
No — there’s no official Claude Acuity Scheduling connector, but Acuity does have a self-serve API you can bring your own key for. The catch: it’s only on the top plan. Acuity (now “Acuity Scheduling by Squarespace”) isn’t in Anthropic’s connectors directory and ships no vendor MCP server. Its developer API is genuinely open — appointments, calendars, availability slots, webhooks — but API access requires the Premium plan (formerly “Powerhouse”), not the cheaper Starter or Standard tiers. And however you wire it in, MCP tools in Claude only work inside a conversation you start — nothing monitors your calendar or fires while you’re away.
Here’s what the API actually does, the plan caveat that trips people up, and what to use if you want scheduling work that runs on its own.
What’s available: a self-serve API (on the top plan)
Acuity’s developer portal documents a straightforward REST API with two auth modes:
- Basic Auth with a User ID + API key (found in your Acuity account under Integrations/API) — for automating your own account.
- OAuth 2.0 — for multi-account or public integrations.
The API covers appointment CRUD, calendars, availability slots, and orders, plus webhooks (static or dynamic) that fire on scheduled, canceled, and rescheduled appointments. That’s a solid surface — everything you’d want to read or act on around bookings.
The plan gate is the thing to know. API access (and custom CSS) is limited to Acuity’s top tier. Current 2026 lineup: Starter $20/mo, Standard $34/mo, Premium $61/mo — the API key lives on Premium. If you’re on an older plan the naming was Emerging/Growing/Powerhouse, and it’s the Powerhouse tier that had API access. So “grab your Acuity API key” is only true if you’re on Premium (or legacy Powerhouse); on Starter or Standard there’s no key to grab.
There’s no official Acuity MCP server. What you’ll find are third-party aggregators — Zapier MCP, Pipedream, and community repos that wrap the v1 API with Basic Auth. Those are unofficial; none is an Acuity-built connector. To use one with Claude you add it as a custom MCP server with your own credentials.
The limits that actually matter
Whatever route you take, the integration is “a scheduler you query,” not “an agent that runs.” The limits:
- Top-plan-gated key. No Premium/Powerhouse plan, no API key — most Starter and Standard users can’t connect at all.
- No triggers, no monitoring. Acuity’s webhooks can fire on a new booking, but Claude’s MCP tools only run inside a conversation you start — Claude won’t sit listening for that webhook and act on it. There’s no “when someone books, send them an intake form” happening on its own.
- Conversation-only. Claude reads or creates an appointment when you ask; it doesn’t watch your calendar and act as bookings arrive. Close the chat and nothing continues.
- Laptop-bound for anything scheduled. The nearest thing to “running on its own” is Claude Cowork’s scheduled tasks, which fire on a fixed clock and only “while your computer is awake and the Claude Desktop app is open.”
So Claude is fine for “what’s on my Acuity calendar tomorrow?” — and not built for “send every new client an intake form and a reminder the moment they book.”
If you want Acuity work that runs on its own: Carly
The moment you want something to happen around a booking without you in the chat — send an intake form the second someone books, remind a client the morning of, follow up after a no-show, sync every appointment to your CRM — you’ve crossed past what Claude’s MCP setup is for.
That’s where Carly fits. Carly is an AI executive assistant built to act on triggers, not just answer in a chat:
- Fires on events and schedules, 24/7, in the cloud — Acuity webhooks can trigger Carly the instant an appointment is booked, canceled, or rescheduled; your laptop doesn’t need to be awake.
- Uses the Acuity API via your key — read and create appointments, check availability, and react to booking events (Premium/Powerhouse plan required for the key).
- Actually sends and updates — drafts and sends email (Gmail and Outlook) with attachments, files and labels, manages tasks, updates your CRM, and records meetings.
- Builds the workflow for you — tell it “when a client books on Acuity, email them the intake form and remind them the morning of” in plain English; it interviews you, then builds it with you. No prompt engineering.
Acuity connects to Carly via your own API key — paste it on carlyassistant.com/integrations. AI agents start at $35/month, and steps in a workflow that don’t use AI run free and unlimited. Carly connects to 200+ tools across 40+ categories — see integrations.
Claude vs Carly
| Claude (Acuity via API + MCP) | Carly | |
|---|---|---|
| Read & create appointments | Yes (your key, top plan) | Yes |
| Check availability | Yes | Yes |
| Acts on booking webhooks | No | Yes |
| Sends intake form when someone books | No | Yes |
| Works while laptop is closed | No | Yes (cloud) |
| Sends reminders / email | No (Gmail draft-only) | Yes (Gmail + Outlook) |
| Pricing | Pro $20 / Max $100–$200 | AI agents from $35/mo |
Claude with your Acuity key is a scheduler you query in a chat. Carly is a teammate that acts on every booking as it lands.
Frequently Asked Questions
Does Claude work with Acuity Scheduling?
Not with an official connector — Acuity isn’t in Anthropic’s directory and ships no MCP server. But Acuity has a self-serve developer API (appointments, availability, webhooks), so you can connect it to Claude via a third-party or community MCP server using your own key. The important caveat: API access requires Acuity’s Premium plan (formerly Powerhouse) — Starter and Standard don’t include a key.
Can Claude send reminders or intake forms when someone books?
Not on its own. Acuity’s webhooks can fire on a new booking, but Claude’s MCP tools only run inside a conversation you start — there’s nothing listening for that webhook and acting. For automatic, trigger-based follow-ups you need an agent platform like Carly.
How do I connect Claude to Acuity?
If you’re on the Premium/Powerhouse plan, get your User ID and API key from Acuity (Integrations/API), then add a third-party or community Acuity MCP server as a custom connector in Claude (paid plan required for remote custom connectors). Zapier and Pipedream both offer Acuity MCP endpoints; neither is Acuity-official.
What if I want every Acuity booking to trigger a workflow?
That’s outside what Claude does — it queries your calendar in a chat, it doesn’t act on webhooks. Carly fires on Acuity booking events 24/7 in the cloud: it can send intake forms, remind clients, follow up on no-shows, and sync to your CRM. AI agents start at $35/month.
More: Claude connectors · Claude + Calendly · Claude + Google Calendar · Can Claude send emails · Claude vs Carly · Group scheduling tools
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"Before Carly, I relied on a Calendly link, but the whole process felt impersonal and not very professional. Carly changed that by handling all the back-and-forth, so I'm no longer stuck in endless email threads trying to line up schedules.
Now Carly reaches out to candidates, shares my real-time availability, lets them pick a slot, then sends a Zoom link and drops it straight into my calendar. She sends reminders to both of us before each call, which has significantly reduced no-shows and last-minute confusion.
On top of scheduling, Carly acts like a full executive assistant, sending me my schedule the night before so I can prepare for each call. It reminds me of the old x.ai assistant, but Carly is noticeably smarter, faster, and better suited to my healthcare recruitment business."
