University of California, Los Angeles · Rate Limits

Ucla Rate Limits

UCLA publishes no rate-limit documentation of any kind. All 91 operations across its seven contracts run behind a Google Apigee gateway at api.ucla.edu, which is certainly enforcing quota per API Product, but not one contract declares a 429 response and no rate-limit header was observed on any live response. Quota is set when a campus unit approves an application's subscription to an API Product; that decision is not published anywhere. The library IIIF and digital-collections hosts additionally sit behind an Anubis proof-of-work bot challenge, which functions as an undeclared rate limit on automated clients.

Ucla Rate Limits is the machine-readable rate-limit profile for University of California, Los Angeles on the APIs.io network, in the API Commons Rate Limits shape.

It captures 2 rate-limit definitions, measuring requests-per-minute and proof-of-work.

An exhausted limit returns HTTP 429.

This profile was written by API Evangelist and has not been verified against a page the provider published; treat every limit as unconfirmed until a dated transcription replaces it.

The profile also includes 1 backoff/retry policy defined and response codes documented for throttled.

Tagged areas include Education, Higher Education, University, and Rate Limiting.

2 Limits Exhausted: HTTP 429
Method: generated, dated 2026-06-03.
Written by API Evangelist on 2026-06-03 and not verified against a page the provider published. Treat every limit as unconfirmed until a dated transcription replaces it.
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EducationHigher EducationUniversityRate Limiting

Limits

Default (Apigee product quota) client
requests-per-minute
undisclosed
Enforced by the gateway per API Product and per App Key. Not published, not declared in any contract, and not discoverable before an access request is approved.
Bot challenge (UCLA Library hosts) client
proof-of-work
undisclosed
dataverse.ucla.edu and digital.library.ucla.edu answer HTTP 200 with an Anubis challenge on every path. An undeclared throttle on automated access rather than a published rate limit.

Policies

Backoff Strategy
Exponential backoff with jitter; honor Retry-After; harvest during off-peak hours.

Sources

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