Operating rules

Use scripts/rest_request.py for all Reactome ContentService calls.
Use base_url=https://reactome.org/ContentService.
Single pathway or event lookups usually do not need max_items; list-style pathway membership calls are better with max_items=10.
Send Accept: application/json in headers when requesting JSON.
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 JSON by default.
Prefer these paths: data/query/<eventId>, data/pathways/low/entity/<identifier>, data/participants/<eventId>, and search endpoints.
If the user needs the full payload, set save_raw=true and report the saved file path.