generated: '2026-08-19'
method: derived
source: https://api.hub.jhu.edu/docs/
x-operator: institution
x-provenance-note: >-
  Rate-limit record derived by API Evangelist. No published rate limit was found on any Johns Hopkins API surface; absence is recorded, not inferred.
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: Johns Hopkins University
providerId: johns-hopkins-university
created: '2026-06-03'
modified: '2026-06-03'
reconciled: false
tags:
- Education
- Higher Education
- University
- Rate Limiting
description: >-
  Johns Hopkins 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/johns-hopkins-university/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