Nih Plans Pricing
NIH and NCBI APIs are provided as free public services with no cost to access. All APIs are publicly funded and offered without subscription fees. Access tiers are differentiated primarily by API key registration, which unlocks higher rate limits.
Nih Plans Pricing is the machine-readable pricing-plan profile for National Institutes of Health (NIH) on the APIs.io network, conforming to the API Commons Plans specification.
It defines 5 plans, with named plans including Anonymous / No Key, Registered API Key, Enhanced API Key (High Volume), PubChem Access, NIH RePORTER Access.
Tagged areas include Biomedical, Research, PubMed, ClinicalTrials, and PubChem.
Plans
Default access for all NCBI E-utilities without an API key. Suitable for light usage, testing, and exploration.
Free API key registration unlocks higher rate limits for NCBI E-utilities. Recommended for all production applications and research workflows.
For users requiring more than 10 requests per second. Available on a case-by-case basis by contacting NCBI with documented need.
PubChem API is free and open with a single usage tier. No API key is required; rate limits are enforced globally.
Free public access to NIH research funding data with no registration required. Rate limits enforced per IP address.