Ena Database

This gives Claude direct access to the European Nucleotide Archive through its REST APIs and FTP endpoints. You'd reach for it when building bioinformatics pipelines that need to pull DNA/RNA sequences, raw FASTQ reads, or genome assemblies by accession number. It handles the common workflow of searching for samples or studies via the Portal API, retrieving metadata, then downloading the actual sequence files. The documentation is thorough with specific endpoint details and rate limiting guidance (50 requests per second). Honestly most useful if you're already working in genomics and know what an ENA accession looks like, since it assumes familiarity with how sequence databases are organized into studies, samples, runs, and assemblies.