# Aurinko Calendar API vs Zoom Scheduler API

> Zoom Scheduler scores 50.6 (D) to Aurinko Calendar's 45.6 (E) for calendar access. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/aurinko-calendar-vs-zoom-scheduler
- Markdown: https://www.anchorterminal.com/compare/aurinko-calendar-vs-zoom-scheduler.md (~2,400 tokens)
- Slim: https://www.anchorterminal.com/compare/aurinko-calendar-vs-zoom-scheduler.min.md (~630 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/aurinko-calendar-vs-zoom-scheduler.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-09

Zoom Scheduler API scores 50.6 (D) on agent readiness against Aurinko Calendar API's 45.6 (E), and leads in 4 of 7 scored categories. Aurinko Calendar API leads on schema & documentation, agent ergonomics and payments & pricing. Both do calendar access.

- Aurinko Calendar API: grade E, 45.6/100, rank #861 of 950. Markdown https://www.anchorterminal.com/tools/aurinko-calendar.md · JSON https://www.anchorterminal.com/api/v1/tools/aurinko-calendar.json
- Zoom Scheduler API: grade D, 50.6/100, rank #767 of 950. Markdown https://www.anchorterminal.com/tools/zoom-scheduler.md · JSON https://www.anchorterminal.com/api/v1/tools/zoom-scheduler.json
- Best calendar and scheduling APIs for AI agents: https://www.anchorterminal.com/best/scheduling/index.md
- All 45 scheduling comparisons: https://www.anchorterminal.com/compare/scheduling/index.md

## Which one, for what

### Aurinko Calendar API (E)

Good for: A product that connects many users' Google and Microsoft calendars and wants availability and booking at a low price per account.

Ahead on:
- Schema & documentation, 66 against 61
- Agent ergonomics, 56 against 43
- Payments & pricing, 40 against 25

Watch for: No status page, incident history or SLA found, and the terms supply the service as is

### Zoom Scheduler API (D)

Good for: An agent booking into a Zoom Scheduler user's or team's booking pages, with slot lookup, booking, cancellation and two webhooks.

Ahead on:
- Reliability, 63 against 40
- Security & auth, 54 against 41
- Maintenance & community, 28 against 20
- Transparency & trust, 69 against 44

Watch for: Zoom's API terms (section 3.7.9) forbid using the APIs to monitor availability or performance, or for benchmarking. This matters before any probe is run


## Score by category

| Category | Weight | Aurinko Calendar API | Zoom Scheduler API | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 40 | 63 | Zoom Scheduler API +23 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 66 | 61 | Aurinko Calendar API +5 |
| Agent ergonomics | 13% (16.2 this run) | 56 | 43 | Aurinko Calendar API +13 |
| Security & auth | 14% (17.5 this run) | 41 | 54 | Zoom Scheduler API +13 |
| Payments & pricing | 10% (12.5 this run) | 40 | 25 | Aurinko Calendar API +15 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 20 | 28 | Zoom Scheduler API +8 |
| Transparency & trust | 7% (8.8 this run) | 44 | 69 | Zoom Scheduler API +25 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **45.6 · E** | **50.6 · D** | |

## Facts side by side

| Fact | Aurinko Calendar API | Zoom Scheduler API |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Yoxel, Inc. | Zoom Communications, Inc. |
| Hosted endpoint | `https://api.aurinko.io` | `https://api.zoom.us/v2` |
| Transports | HTTP | HTTP |
| Auth | OAuth | OAuth |
| Pricing | Paid | Paid |
| x402 | no | no |
| Licence | Proprietary service under Yoxel's Terms of Services Agreement | Proprietary service under the Zoom API Licence and Terms of Use |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | none | 2026-08-17 |
| Terms last updated | 2022-08-11 | 2025-07-16 |
| Privacy policy last updated | 2022-08-11 | 2026-09-17 |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | yes | yes |
| Terms restrict benchmarking | yes | yes |
| Terms or service can change without notice | not found in the text | yes |
| Arbitration or class-action waiver | yes | yes |

## Verdicts

**Aurinko Calendar API.** A public OpenAPI 3.0 spec covers 154 operations, with free/busy, meeting-time suggestion and booking profiles alongside calendar reads and writes, and prices start at $1 an active account a month. No status page, SLA, changelog or official SDK was found, and the application's client secret reaches every connected account.

**Zoom Scheduler API.** Each of the 24 operations has its own granular OAuth scope, and Zoom Scheduler and the REST API are separate components on the status page. No operation moves a booking, no official SDK covers Scheduler, and Zoom's API terms forbid benchmarking or monitoring the service.

## Before you call either

### Aurinko Calendar API

1. Use `https://api.aurinko.io/v1`. Several cURL examples in the docs print `https:/api.aurinko.io` with one slash
2. Send `If-Match` with the event's `etag` on `PATCH /v1/calendars/{calendarId}/events/{eventId}`. A stale value returns 412
3. Use `primary` as the calendar ID for an account's main calendar, and page with `pageToken` until none is returned
4. Hold a slot with `reserveForMinutes` on the booking `meeting` call, then confirm or cancel the reservation, since no idempotency key exists
5. Retry 429, 408 and 5xx with exponential backoff. Do not retry 404. A 429 can come from Google or Microsoft limits behind the API

### Zoom Scheduler API

1. Call `GET /scheduler/schedules/{scheduleId}/available_times` and book only a spot whose status is `available`
2. Send `start_date_time` in ISO 8601 with the booker's IANA `time_zone` to `POST /scheduler/attendee`. Expect 409 on a conflict
3. To move a booking, cancel it with `PATCH /scheduler/events/{eventId}` and `status` set to `cancelled`, then book the new slot
4. List scheduled events before retrying a booking, because no idempotency key is documented
5. Request a new Server-to-Server OAuth token every hour. That grant issues no refresh token

## Questions

### Which is better for AI agents, Aurinko Calendar API or Zoom Scheduler API?

Zoom Scheduler API scores 50.6 (D) on agent readiness against Aurinko Calendar API's 45.6 (E), and leads in 4 of 7 scored categories. Aurinko Calendar API leads on schema & documentation, agent ergonomics and payments & pricing.

### Do Aurinko Calendar API and Zoom Scheduler API need an API key?

Both use an OAuth sign-in.

### Can an agent call Aurinko Calendar API and Zoom Scheduler API without installing anything?

Yes. Aurinko Calendar API has a hosted endpoint at https://api.aurinko.io and Zoom Scheduler API at https://api.zoom.us/v2.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/aurinko-calendar-vs-zoom-scheduler.json, and with the fewest tokens: https://www.anchorterminal.com/compare/aurinko-calendar-vs-zoom-scheduler.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "aurinko-calendar", "b": "zoom-scheduler"}`. From a terminal: `anchor compare aurinko-calendar zoom-scheduler`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/aurinko-calendar.json and https://www.anchorterminal.com/api/v1/tools/zoom-scheduler.json

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