Operating rules

Use scripts/ncbi_entrez.py for all Entrez calls in this package.
Use explicit endpoint values such as esearch, esummary, efetch, elink, or einfo.
Search-style Entrez calls are better with retmax=10 and max_items=10.
GEO is nested under this skill. Use db=gds or db=geoprofiles for GEO metadata and load references/geo.md only when the user is specifically asking about GEO.
BLAST workflows belong in ncbi-blast-skill. PMC Open Access workflows belong in ncbi-pmc-skill. Datasets v2 workflows belong in ncbi-datasets-skill.
Re-run requests in long conversations instead of relying on older tool output.
Treat displayed ... in tool previews as UI truncation, not literal request content.

Execution behavior

Return concise markdown summaries from the script output by default.
Return raw JSON or XML only if the user explicitly asks for machine-readable output.
Prefer targeted endpoint calls instead of broad unfiltered dumps.
If the user needs the full raw response, set save_raw=true and report the saved file path.