University of Oxford · Rate Limits

University Of Oxford Rate Limits

The University of Oxford publishes no rate-limit table, no quota and no Retry-After header on any institution-operated surface, and none was observed in probing. What it does publish, uniquely for ORA, is an etiquette policy in prose: harvesters wanting all or a large sample of the repository are asked to contact the service first, and Oxford states that unexpected spidering or scraping may lead to access being blocked. That is a social control enforced by a human decision, not a technical limit a client can read. Separately, ora.ox.ac.uk sits behind Cloudflare and issues managed challenges (HTTP 403, cf-mitigated: challenge) to non-browser clients on some paths — bot mitigation rather than rate limiting, but the practical failure mode a naive client will hit first.

University Of Oxford Rate Limits is the machine-readable rate-limit profile for University of Oxford on the APIs.io network, conforming to the API Commons Rate Limits specification.

It captures 4 rate-limit definitions, measuring unspecified.

The profile also includes 2 backoff/retry policies defined and response codes documented for throttled.

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

4 Limits Throttle: 429
EducationHigher EducationUniversityRate Limiting

Limits

ORA OAI-PMH client
unspecified
none published
Oxford asks bulk harvesters to make contact first (https://ora.ox.ac.uk/api). Scheduled maintenance Tuesdays 07:00-09:00 UK time may return 503.
ORA search / object JSON client
unspecified
none published
Undocumented endpoint; no limit stated. robots.txt disallows /?q*, /?f*, /?page* and /export_csv_search_results, which is the closest thing to a stated automation boundary.
Digital Bodleian IIIF client
unspecified
none published
Image API info.json advertises maxWidth 4000 and maxHeight 4000 — a per-request size ceiling, not a rate limit.
Oxford Text Archive OAI-PMH client
unspecified
none published

Policies

Contact before bulk harvest
Oxford explicitly asks would-be bulk downloaders of ORA to get in touch so the service can advise on approach.
Backoff Strategy
No Retry-After is emitted anywhere; clients should apply exponential backoff with jitter on their own initiative and respect the published Tuesday maintenance window.

Sources

Work with this as data

Every rate limit here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for rate limits

4 MCP tools reach this
  • find_rate_limitsBrowse and filter every rate limit in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This rate limit
curl "https://apis.io/api/v1/rate-limits/university-of-oxford-rate-limits"
All rate limits
curl "https://apis.io/api/v1/rate-limits?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

A second provider on the same verified email joins the account you already have.