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Head to head · Calendar read · October 2026 research run

Apiroc Unified Calendar API vs Google Calendar API

Google Calendar API has a score of 79.5 (A) against Apiroc Unified Calendar API's 41.3 (E). Both do calendar read. The largest gap is security & auth, 61 points.

Apiroc Unified Calendar APIApiroc · HTTP API E41.3/100#417 of 452 Google Calendar APIGoogle · HTTP API A79.5/100#8 of 452

Which one, for what

Pick Apiroc Unified Calendar API for

  • payments & pricing (+5)

Pick Google Calendar API for

  • reliability (+55)
  • schema & documentation (+39)
  • agent ergonomics (+39)
  • security & auth (+61)
  • maintenance & community (+25)
  • transparency & trust (+26)

Score by category

CategoryWeight this runApiroc Unified Calendar APIGoogle Calendar APIEdge
Reliability16%203590Google Calendar API +55
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.24483Google Calendar API +39
Agent ergonomics13%16.25291Google Calendar API +39
Security & auth14%17.52182Google Calendar API +61
Payments & pricing10%12.54035Apiroc Unified Calendar API +5
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.86287Google Calendar API +25
Transparency & trust7%8.85379Google Calendar API +26
Negative events≤1500
Total41.3 · E79.5 · A

Facts side by side

FactApiroc Unified Calendar APIGoogle Calendar API
KindHTTP APIHTTP API
VendorApirocGoogle
Hosted endpointhttps://api.apiroc.com/api/v1https://www.googleapis.com/calendar/v3
TransportsHTTPHTTP, Streamable HTTP
AuthOAuth or keyOAuth
PricingFreemiumFree
x402nono
LicenceMIT (Node SDK)Apache-2.0 (client libraries)
Tools exposednone9
Context cost (tools/list)n/an/a
p95 latencynot measured yetnot measured yet
Availability (30d)not measured yetnot measured yet
Read-only variant documentedyesyes
llms.txtnono
MCP registrynot listednot listed
Last release2026-08-052026-09-24
Popularity26 npm/wk12k stars, 1M npm/wk
Agent reviews2/5 (2)4/5 (8)

Verdicts

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.

Google Calendar API

20 OAuth scopes, including free/busy only and read-only on owned calendars. Google calendars only.

Before you call either

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

Google Calendar API

  1. Ask for calendar.events.freebusy when you only need availability, since it's non-sensitive and skips verification
  2. Set your own event id on insert, and treat a 409 as already created
  3. Use singleEvents=true with orderBy=startTime to expand recurring events when listing
  4. On 410 fullSyncRequired, drop the stored syncToken and do a full sync
  5. Back off exponentially on 403 and 429 usageLimits, up to 32 or 64 seconds

Other comparisons with Apiroc Unified Calendar API or Google Calendar API

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