Blast
The NCBI BLAST URL API is free to use with no API key required. Responsible use guidelines apply; automated large-scale submissions should be throttled appropriately to avoid overloading NCBI servers.
Blast is the machine-readable pricing-plan profile for National Center for Biotechnology Information (NCBI) on the APIs.io network, conforming to the API Commons Plans specification.
It defines 1 plan, with named plans including Public (Free).
Tagged areas include Bioinformatics, Genomics, Life Sciences, PubMed, and Sequences.
Plans
Open, unauthenticated access for submitting BLAST search requests, polling job status, and retrieving results in XML, JSON, tabular, or HTML formats. NCBI requests that automated clients include a meaningful email address in requests and avoid submitting excessive concurrent jobs.