Zenodo · Rate Limits

Zenodo Rate Limits

Zenodo enforces rate limits on all API endpoints to ensure fair resource distribution. Limits vary by endpoint type and authentication status. Exceeding a limit returns HTTP 429 Too Many Requests. Rate-limit status is exposed via response headers on every API call.

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

It captures 7 rate-limit definitions, measuring requests.

Tagged areas include Research, Open Data, Repository, DOI, and Datasets.

7 Limits
ResearchOpen DataRepositoryDOIDatasetsSoftwareCERNOpenAIREInvenioRDMOpen ScienceMetadataHarvesting

Limits

REST API (authenticated)
requests · minute
100
Applies to all REST API endpoints for users with a valid Bearer token
REST API (authenticated)
requests · hour
5000
Hourly ceiling for authenticated REST API users
REST API (guest)
requests · minute
60
Applies to unauthenticated REST API requests
REST API (guest)
requests · hour
2000
Hourly ceiling for unauthenticated REST API users
Search API
requests · minute
30
Applies to the /api/records search endpoint; same limit for authenticated and guest users
OAI-PMH
requests · minute
30
Applies to the OAI-PMH harvesting endpoint at https://zenodo.org/oai2d
Sandbox (guest)
requests · minute
133
Sandbox environment at sandbox.zenodo.org for development and testing

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/zenodo-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 email required.

GitHub Google LinkedIn

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