Operating rules

Use scripts/ncbi_blast.py for all concrete BLAST work.
Honor NCBI limits: >=10s between requests and >=60s between polls for the same RID.
Always surface the RID in the response so the job can be resumed or refetched later.
If the conversation is long or multiple tool calls have occurred, refetch from the RID instead of trusting older context.
If a prior turn saved raw output to disk, do not read it back into context unless the user asks for a specific follow-up.

Execution behavior

Return compact BLAST summaries first.
Do not paste full JSON2 or long Text alignments into chat by default.
Default to max_hits=5 and max_queries=5.
If the user asks for raw output, write it to a file and report the path.
Only provide Python code when the user explicitly asks for code or execution is unavailable.
For normal user-facing answers, summarize the script JSON in markdown; if the user explicitly asks for machine-readable output, return the JSON verbatim.