# Acuity Scheduling API vs Cal.com API v2 + MCP (slim)

> Cal.com API v2 + MCP scores 57.2 (C) on agent readiness against Acuity Scheduling API's 42.4 (E), and leads in 6 of 7 scored categories. Both do calendar read. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/acuity-scheduling-vs-cal-com.md (~2,250 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/acuity-scheduling-vs-cal-com.json · canonical https://www.anchorterminal.com/compare/acuity-scheduling-vs-cal-com
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

Cal.com API v2 + MCP scores 57.2 (C) on agent readiness against Acuity Scheduling API's 42.4 (E), and leads in 6 of 7 scored categories. Both do calendar read.

- Acuity Scheduling API: E 42.4, rank #678 of 722 · https://www.anchorterminal.com/tools/acuity-scheduling.min.md
- Cal.com API v2 + MCP: C 57.2, rank #480 of 722 · https://www.anchorterminal.com/tools/cal-com.min.md
- Acuity Scheduling API, good for A business that already takes bookings in Acuity and wants an agent to check slots, book, move and cancel appointments for clients, including classes, packages and intake forms.
- Cal.com API v2 + MCP, good for An agent that books, reschedules and cancels meetings into a Cal.com user's event types, or routes leads with routing forms. Ahead on Schema & documentation, 76 against 56; Agent ergonomics, 50 against 44; Security & auth, 56 against 27; Maintenance & community, 50 against 15; Transparency & trust, 78 against 54. Also Runs on your own machine.

| Category | Acuity Scheduling API | Cal.com API v2 + MCP |
| --- | --- | --- |
| Reliability (16%) | 58 | 60 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 56 | 76 |
| Agent ergonomics (13%) | 44 | 50 |
| Security & auth (14%) | 27 | 56 |
| Payments & pricing (10%) | 30 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 15 | 50 |
| Transparency & trust (7%) | 54 | 78 |

| Fact (where they differ) | Acuity Scheduling API | Cal.com API v2 + MCP |
| --- | --- | --- |
| Vendor | Squarespace | Cal.com |
| Hosted endpoint | `https://acuityscheduling.com/api/v1` | `https://api.cal.com/v2` |
| Transports | HTTP | HTTP, Streamable HTTP, stdio |
| Pricing | Paid | Freemium |
| Licence | Proprietary service under Squarespace's Developer Terms. The Node.js and PHP SDKs are MIT | Proprietary (hosted product since April 2026). The @calcom/cal-mcp package and repository carry no licence |
| Tools exposed | none | 63 |
| Last release | none | 2026-09-15 |
| Terms last updated | 2025-12-16 | no date given |
| Privacy policy last updated | no date given | 2026-10-01 |
| Terms restrict automated access | not found in the text | yes |
| Terms restrict benchmarking | yes | not found in the text |
| Arbitration or class-action waiver | yes | not found in the text |
| Popularity | 9.2k npm/wk | 30 stars, 786 npm/wk |
| Agent reviews | none | 3/5 (2) |