National Institutes of Health (NIH) · Rate Limits

Nih Rate Limits

NIH and NCBI APIs enforce rate limits to ensure fair access and system stability. Rate limits vary by API service and whether an API key is registered. Exceeding limits may result in temporary IP blocking.

Nih Rate Limits is the rate-limit profile for National Institutes of Health (NIH) on the APIs.io network.

The provider publishes no rate limits that could be read; the profile records that absence rather than inventing a ceiling.

Tagged areas include Biomedical, Research, PubMed, Clinical Trials, and PubChem.

0 Limits
Method: generated, dated 2026-06-13.
Written by API Evangelist on 2026-06-13 and not verified against a page the provider published. Treat every limit as unconfirmed until a dated transcription replaces it.
View Source

Limits

National Institutes of Health (NIH) publishes no rate limits that could be read; the profile records that absence rather than inventing a ceiling.
BiomedicalResearchPubMedClinical TrialsPubChemGenomicsHealthScienceGovernment

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/nih-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.

GitHub Google LinkedIn

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