Pubchem Pug Rest
The PubChem PUG REST API is free to use with no registration required. Rate limits are enforced per IP address to ensure fair use. For high-volume needs, users are directed to download PubChem FTP data dumps.
Pubchem Pug Rest is the pricing profile for National Center for Biotechnology Information (NCBI) on the APIs.io network.
It defines 1 plan, with named plans including Public (Free).
This profile was written by API Evangelist and has not been verified against a page the provider published; treat every figure as unconfirmed until a dated transcription replaces it.
Tagged areas include Bioinformatics, Genomics, Life Sciences, PubMed, and Sequences.
generated.
Plans
Unauthenticated, free access to compound, substance, and bioassay data. Queries support lookup by name, CID, SID, AID, SMILES, InChI, and structure similarity. Responses available in JSON, XML, CSV, and SDF.
Work with this as data
Every plan here is available over the APIs.io API and to AI agents over MCP.