# Cronofy API vs Microsoft Graph Calendar API (slim)

> Microsoft Graph Calendar API has a score of 65.6 (B) against Cronofy API's 64.4 (B). Both do calendar read. The largest gap is schema & documentation, 25 points. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/cronofy-vs-microsoft-graph-calendar.md (~1,500 tokens) · this version ~380 tokens · JSON https://www.anchorterminal.com/compare/cronofy-vs-microsoft-graph-calendar.json · canonical https://www.anchorterminal.com/compare/cronofy-vs-microsoft-graph-calendar
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-04

Microsoft Graph Calendar API has a score of 65.6 (B) against Cronofy API's 64.4 (B). Both do calendar read. The largest gap is schema & documentation, 25 points.

- Cronofy API: B 64.4, rank #182 of 452 · https://www.anchorterminal.com/tools/cronofy.min.md
- Microsoft Graph Calendar API: B 65.6, rank #170 of 452 · https://www.anchorterminal.com/tools/microsoft-graph-calendar.min.md
- Pick Cronofy API for reliability (+20). Pick Microsoft Graph Calendar API for schema & documentation (+25), agent ergonomics (+12), security & auth (+5), payments & pricing (+5), maintenance & community (+20).

| Category | Cronofy API | Microsoft Graph Calendar API |
| --- | --- | --- |
| Reliability (16%) | 85 | 65 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 58 | 83 |
| Agent ergonomics (13%) | 76 | 88 |
| Security & auth (14%) | 60 | 65 |
| Payments & pricing (10%) | 30 | 35 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 56 | 76 |
| Transparency & trust (7%) | 74 | 73 |