# Provenance
generated: '2026-08-30'
method: generated
x-provenance-note: >-
  Authored by API Evangelist. Newcastle University publishes no rate-limit table for any of its APIs; verified again 2026-08-30 across api-dor.ncl.ac.uk, api-ecppec.ncl.ac.uk and api.usb.urbanobservatory.ac.uk, none of which returned a RateLimit or X-RateLimit header.
specification: API Commons Rate Limits
specificationVersion: '0.1'
schema: https://raw.githubusercontent.com/api-evangelist/interface-research/main/schema/api-commons.yml#/$defs/RateLimits
provider: Newcastle University
providerId: newcastle
created: '2026-06-03'
modified: '2026-06-03'
reconciled: false
tags:
- Education
- Higher Education
- University
- Rate Limiting
description: >-
  Newcastle University does not publish a unified public rate-limit table across its APIs. Open
  metadata and harvesting endpoints (OAI-PMH, IIIF, library) may throttle large-scale
  or automated harvesting; clients should harvest politely, honor Retry-After, and
  contact the relevant service for bulk access.
notes: Confirm per-service limits with each API's documentation; harvest responsibly.
sources:
- https://raw.githubusercontent.com/api-evangelist/newcastle/refs/heads/main/apis.yml
responseCodes:
  throttled: 429
limits:
- name: Default
  scope: client
  metric: requests-per-minute
  limit: see service documentation
  notes: No published global limit; large harvests may be rate-limited.
policies:
- name: Backoff Strategy
  description: Exponential backoff with jitter; honor Retry-After; harvest during off-peak hours.
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com