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: Vrije Universiteit Amsterdam
providerId: vrije-universiteit-amsterdam
created: '2026-06-03'
modified: '2026-08-30'
reconciled: false
tags:
- Education
- Higher Education
- University
- Rate Limiting
description: >-
  Vrije Universiteit Amsterdam publishes no rate-limit table. The one openly callable
  institution-operated endpoint is the OAI-PMH interface at research.vu.nl/ws/oai; its host
  advertises Crawl-Delay 5 in robots.txt and no numeric API quota. Every other programmable
  surface under a vu.nl subdomain is a credential-gated vendor deployment (Elsevier Pure,
  Canvas, MyTimetable, Yoda) whose limits are the vendor's to publish, not VU's. Harvest
  politely, honor Retry-After, and contact the service owner for bulk access.
notes: Confirm per-service limits with each API's documentation; harvest responsibly.
sources:
- https://raw.githubusercontent.com/api-evangelist/vrije-universiteit-amsterdam/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