Biopython

If you're working with biological sequences, NCBI databases, or protein structures in Python, this is the standard library everyone uses. It handles the grunt work of parsing FASTA/GenBank/PDB files, running BLAST searches, pulling data from NCBI via Entrez, and doing sequence alignments without writing your own parsers. The documentation here is well organized by task: sequence I/O, alignments, database access, structural analysis, and phylogenetics. One thing to note is you need to set your email for NCBI queries (it's required) and grab an API key from your NCBI account if you want the higher rate limits. Good for batch processing and custom pipelines where you need programmatic control rather than clicking through web interfaces.

Install to Claude Code

npx -y skills add k-dense-ai/scientific-agent-skills --skill biopython --agent claude-code