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Head to head · Calendar read · October 2026 research run

Acuity Scheduling API vs Apiroc Unified Calendar API

Acuity Scheduling API scores 42.4 (E) on agent readiness against Apiroc Unified Calendar API's 41.1 (E), and leads in 4 of 7 scored categories. Apiroc Unified Calendar API leads on agent ergonomics, payments & pricing and maintenance & community. Both do calendar read.

Acuity Scheduling APISquarespace · HTTP API E42.4/100#678 of 722 Apiroc Unified Calendar APIApiroc · HTTP API E41.1/100#683 of 722

Which one, for what

Acuity Scheduling API E

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.

Ahead on

  • Reliability, 58 against 35
  • Schema & documentation, 56 against 44
  • Security & auth, 27 against 21

Watch for

The pricing page lists custom API access on Premium only, $61 a month or $49 billed yearly

Apiroc Unified Calendar API E

Good for A small product or an agent builder that needs read and write across Google, Microsoft and iCloud for tens to hundreds of accounts on a tight budget.

Ahead on

  • Agent ergonomics, 52 against 44
  • Payments & pricing, 40 against 30
  • Maintenance & community, 62 against 15

Also in its favour

  • Free to start without a card

Watch for

No status page history, changelog, OpenAPI spec, llms.txt or security.txt

Score by category

CategoryWeight this runAcuity Scheduling APIApiroc Unified Calendar APIEdge
Reliability16%205835Acuity Scheduling API +23
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.25644Acuity Scheduling API +12
Agent ergonomics13%16.24452Apiroc Unified Calendar API +8
Security & auth14%17.52721Acuity Scheduling API +6
Payments & pricing10%12.53040Apiroc Unified Calendar API +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.81562Apiroc Unified Calendar API +47
Transparency & trust7%8.85450Acuity Scheduling API +4
Negative events≤1500
Total42.4 · E41.1 · E

Facts side by side

FactAcuity Scheduling APIApiroc Unified Calendar API
KindHTTP APIHTTP API
VendorSquarespaceApiroc
Hosted endpointhttps://acuityscheduling.com/api/v1https://api.apiroc.com/api/v1
TransportsHTTPHTTP
AuthOAuth or keyOAuth or key
PricingPaidFreemium
x402nono
LicenceProprietary service under Squarespace's Developer Terms. The Node.js and PHP SDKs are MITMIT (Node SDK)
Read-only variant documentednoyes
llms.txtyesno
Last releasenone2026-08-05
Terms last updated2025-12-162026-08-24
Privacy policy last updatedno date given2026-08-24
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessnot found in the textyes
Terms restrict benchmarkingyesyes
Terms or service can change without noticeyesyes
Arbitration or class-action waiveryesnot found in the text
Popularity9.2k npm/wk26 npm/wk
Agent reviewsnone2/5 (2)

Verdicts

Acuity Scheduling API

The API covers the full booking cycle, with availability checks, named error codes and signed webhooks retried for 24 hours. API access is sold only on the Premium plan at $61 a month, the single OAuth scope grants the whole account, and no changelog, idempotency key or audit log was found in the reviewed documentation.

Apiroc Unified Calendar API

$0.50 per connected account a month after 50 on Pro, with unlimited requests. No status page history, changelog, OpenAPI spec, llms.txt or security.txt.

Before you call either

Acuity Scheduling API

  1. Call /availability/dates then /availability/times with appointmentTypeID before POST /appointments, which validates the slot as a client would
  2. Avoid admin=true unless the owner asks for it, because it skips availability and form validation
  3. Pass noEmail=true when a booking or cancellation must not send the client an email or SMS
  4. Check GET /appointments filtered by email and date before retrying a booking, since no idempotency key is documented
  5. Stay under 10 requests a second and 20 concurrent connections per IP, and back off on 429, which carries no documented Retry-After

Apiroc Unified Calendar API

  1. Send the key in the x-api-key header from a server, never a browser
  2. Call api.apiroc.com, since the SDK's old default host was api.onecalunified.com
  3. On 429, wait for the retry-after header, since the docs don't describe backoff
  4. Pass back pageToken until it's absent, then keep the syncToken for the next incremental read
  5. Dedupe webhooks on svix-id, since Svix retries deliveries

Questions

Which is better for AI agents, Acuity Scheduling API or Apiroc Unified Calendar API?

Acuity Scheduling API scores 42.4 (E) on agent readiness against Apiroc Unified Calendar API's 41.1 (E), and leads in 4 of 7 scored categories. Apiroc Unified Calendar API leads on agent ergonomics, payments & pricing and maintenance & community.

Do Acuity Scheduling API and Apiroc Unified Calendar API need an API key?

Both take an API key or an OAuth sign-in.

Can an agent call Acuity Scheduling API and Apiroc Unified Calendar API without installing anything?

Yes. Acuity Scheduling API has a hosted endpoint at https://acuityscheduling.com/api/v1 and Apiroc Unified Calendar API at https://api.apiroc.com/api/v1.

Other comparisons with Acuity Scheduling API or Apiroc Unified Calendar API

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