# Apiroc Unified Calendar API vs Microsoft Graph Calendar API (slim)

> Microsoft Graph Calendar API has a score of 65.6 (B) against Apiroc Unified Calendar API's 41.3 (E). Both do calendar read. The largest gap is security & auth, 44 points. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/apiroc-vs-microsoft-graph-calendar.md (~1,550 tokens) · this version ~380 tokens · JSON https://www.anchorterminal.com/compare/apiroc-vs-microsoft-graph-calendar.json · canonical https://www.anchorterminal.com/compare/apiroc-vs-microsoft-graph-calendar
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-05

Microsoft Graph Calendar API has a score of 65.6 (B) against Apiroc Unified Calendar API's 41.3 (E). Both do calendar read. The largest gap is security & auth, 44 points.

- Apiroc Unified Calendar API: E 41.3, rank #417 of 452 · https://www.anchorterminal.com/tools/apiroc.min.md
- Microsoft Graph Calendar API: B 65.6, rank #170 of 452 · https://www.anchorterminal.com/tools/microsoft-graph-calendar.min.md
- Pick Apiroc Unified Calendar API for payments & pricing (+5). Pick Microsoft Graph Calendar API for reliability (+30), schema & documentation (+39), agent ergonomics (+36), security & auth (+44), maintenance & community (+14), transparency & trust (+20).

| Category | Apiroc Unified Calendar API | Microsoft Graph Calendar API |
| --- | --- | --- |
| Reliability (16%) | 35 | 65 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 44 | 83 |
| Agent ergonomics (13%) | 52 | 88 |
| Security & auth (14%) | 21 | 65 |
| Payments & pricing (10%) | 40 | 35 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 62 | 76 |
| Transparency & trust (7%) | 53 | 73 |