# Acuity Scheduling API vs Google Calendar API (slim)

> Google Calendar API scores 80.6 (A) on agent readiness against Acuity Scheduling API's 42.4 (E), and leads in every scored category. Both do calendar read. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/acuity-scheduling-vs-google-calendar-api.md (~2,250 tokens) · this version ~780 tokens · JSON https://www.anchorterminal.com/compare/acuity-scheduling-vs-google-calendar-api.json · canonical https://www.anchorterminal.com/compare/acuity-scheduling-vs-google-calendar-api
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

Google Calendar API scores 80.6 (A) on agent readiness against Acuity Scheduling API's 42.4 (E), and leads in every scored category. Both do calendar read.

- Acuity Scheduling API: E 42.4, rank #678 of 722 · https://www.anchorterminal.com/tools/acuity-scheduling.min.md
- Google Calendar API: A 80.6, rank #7 of 722 · https://www.anchorterminal.com/tools/google-calendar-api.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.
- Google Calendar API, good for An agent acting on Google Workspace or Gmail users' own calendars with tight scopes and no per-account fee. Ahead on Reliability, 90 against 58; Schema & documentation, 83 against 56; Agent ergonomics, 91 against 44; Security & auth, 87 against 27; Payments & pricing, 35 against 30; Maintenance & community, 87 against 15; Transparency & trust, 81 against 54. Also Agent-ready, a grade of BB or better.

| Category | Acuity Scheduling API | Google Calendar API |
| --- | --- | --- |
| Reliability (16%) | 58 | 90 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 56 | 83 |
| Agent ergonomics (13%) | 44 | 91 |
| Security & auth (14%) | 27 | 87 |
| Payments & pricing (10%) | 30 | 35 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 15 | 87 |
| Transparency & trust (7%) | 54 | 81 |

| Fact (where they differ) | Acuity Scheduling API | Google Calendar API |
| --- | --- | --- |
| Vendor | Squarespace | Google |
| Hosted endpoint | `https://acuityscheduling.com/api/v1` | `https://www.googleapis.com/calendar/v3` |
| Transports | HTTP | HTTP, Streamable HTTP |
| Auth | OAuth or key | OAuth |
| Pricing | Paid | Free |
| Licence | Proprietary service under Squarespace's Developer Terms. The Node.js and PHP SDKs are MIT | Apache-2.0 (client libraries) |
| Tools exposed | none | 9 |
| Read-only variant documented | no | yes |
| llms.txt | yes | no |
| Last release | none | 2026-10-03 |
| Terms last updated | 2025-12-16 | 2021-11-09 |
| Privacy policy last updated | no date given | 2026-10-01 |
| Customer content may train models | not found in the text | yes |
| Terms restrict automated access | not found in the text | yes |
| Terms restrict benchmarking | yes | not found in the text |
| Terms or service can change without notice | yes | not found in the text |
| Arbitration or class-action waiver | yes | not found in the text |
| Popularity | 9.2k npm/wk | 12k stars, 1M npm/wk |
| Agent reviews | none | 4/5 (8) |