Is the Usefulapi Acuity Scheduling MCP server down?

mcp-registry/io.usefulapi/acuity-scheduling · v1.0.0

As of 2026-10-19 23:30 UTC, the Usefulapi Acuity Scheduling MCP server is up (it requires sign-in) with a Glimind reliability score of 83/100 (grade B). Over the last 30 days it answered 100% of Glimind's liveness checks.

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

claude mcp add --transport http usefulapi-acuity-scheduling-mcp-server https://acuity-scheduling.usefulapi.io/mcp

{
  "mcpServers": {
    "usefulapi-acuity-scheduling-mcp-server": {
      "type": "http",
      "url": "https://acuity-scheduling.usefulapi.io/mcp"
    }
  }
}

Third-party server, listed as discovered. Review its source before installing.

Agent-readiness: A (96/100)

What to fix (2)

Get alerted

Get an email or webhook when this server's readiness drops by 10+ points, tool-poisoning text appears, or a tool breaks:

curl -X POST https://glimind.com/v1/subscriptions -H 'content-type: application/json' -d '{"tools":["mcp-registry/io.usefulapi/acuity-scheduling"],"email":"[email protected]"}'

Agents: watch_tool({"toolId": "mcp-registry/io.usefulapi/acuity-scheduling"}) over MCP.

Passed

• Every tool has a well-formed, typed input schema.
• Every tool and parameter is described.
• Every tool declares whether it is read-only or destructive.
• No tool-poisoning patterns (hidden characters, instruction overrides, concealment, secret access, tool shadowing).
• Compact tool list (~3,151 tokens).
• Tool names are unique and portable across clients.
• 100.00% uptime over 30 days.
• No breaking contract changes in 30 days.

Largest tool definitions

• acuity_create_appointment ~518 tokens
• acuity_list_appointments ~358 tokens
• acuity_reschedule_appointment ~274 tokens
• acuity_availability_dates ~225 tokens
• acuity_availability_times ~225 tokens

Static checks of the advertised tools/list (schema, descriptions, annotations, tool-poisoning patterns, names, size) plus observed protocol, uptime, latency and contract changes. Read-only: no tool is ever called. Weights: schema 15, docs 20, safety 15, efficiency 15, compatibility 15, protocol 5, reliability 10, stability 5. Token counts are estimates (~3.6 characters per token).

Operator? Fix these, then re-check live. Embed the readiness badge:

[![MCP agent-readiness](https://glimind.com/v1/readiness/badge/mcp-registry%2Fio.usefulapi%2Facuity-scheduling.svg)](https://glimind.com/server/mcp-registry%2Fio.usefulapi%2Facuity-scheduling?ref=badge)

<a href="https://glimind.com/server/mcp-registry%2Fio.usefulapi%2Facuity-scheduling?ref=badge"><img src="https://glimind.com/v1/readiness/badge/mcp-registry%2Fio.usefulapi%2Facuity-scheduling.svg" alt="MCP agent-readiness"></a>

.. image:: https://glimind.com/v1/readiness/badge/mcp-registry%2Fio.usefulapi%2Facuity-scheduling.svg
   :target: https://glimind.com/server/mcp-registry%2Fio.usefulapi%2Facuity-scheduling?ref=badge
   :alt: MCP agent-readiness

Tool-definition log

Glimind records every version of this server's tool definitions in a signed, append-only transparency log. Current manifest sha256:6a40d636e506c19e…, first seen 2026-10-17, included at leaf 9195 of 29,458. Version history · verify what your client received.

Tools (18)

• acuity_availability_classes
• acuity_availability_dates
• acuity_availability_times
• acuity_cancel_appointment
• acuity_create_appointment
• acuity_create_client
• acuity_get_appointment
• acuity_get_me
• acuity_list_appointment_types
• acuity_list_appointments
• acuity_list_blocks
• acuity_list_calendars
• acuity_list_clients
• acuity_list_forms
• acuity_list_labels
• acuity_list_orders
• acuity_list_products
• acuity_reschedule_appointment

Compare: most reliable calendar servers · most reliable scheduling servers · most reliable data servers · most reliable account servers · most reliable crm servers

claude mcp add --transport http glimind https://glimind.com/mcp

{
  "mcpServers": {
    "glimind": {
      "type": "http",
      "url": "https://glimind.com/mcp"
    }
  }
}

FAQ

Is the Usefulapi Acuity Scheduling MCP server down right now?

As of 2026-10-19 23:30 UTC, the Usefulapi Acuity Scheduling MCP server is up (it requires sign-in) with a Glimind reliability score of 83/100 (grade B). Over the last 30 days it answered 100% of Glimind's liveness checks.

How many tools does Usefulapi Acuity Scheduling MCP server provide?

Usefulapi Acuity Scheduling MCP server advertises 18 tools, including acuity_availability_classes, acuity_availability_dates, acuity_availability_times, acuity_cancel_appointment, acuity_create_appointment.

How do I install Usefulapi Acuity Scheduling MCP server?

Point your MCP client at this streamable-http endpoint: https://acuity-scheduling.usefulapi.io/mcp

Is the Usefulapi Acuity Scheduling MCP server safe to connect to an AI agent?

Glimind scanned all 18 tool definitions for tool-poisoning patterns — hidden or invisible characters, instructions that override the model, concealment from the user, requests to read credential or MCP config files, conversation exfiltration and cross-tool shadowing — and found none. This checks what the server tells the model, not what its code does; review the source before granting access to sensitive data.

Operator of Usefulapi Acuity Scheduling MCP server?

Status page: 90-day uptime, every outage and how long it lasted.

Claim this listing to get the Verified operator marker, a remediation checklist and owner analytics, or embed the live badge from any of the tool pages above. Maintainers: alerts, deploy attestation and monthly reports.

Status is an automated estimate from Glimind's liveness checks (handshake and tool listing only; no tool is ever called) and may lag or differ from your network. Glimind is not affiliated with this server or its operator. Operator? Request a correction or opt out at https://glimind.com/opt-out.