Operating rules - Use for all PMC Open Access calls in this package. - This skill is intentionally narrow: it currently covers the PMC Open Access service rather than the full PMC API surface. - Pass endpoint-specific query parameters under , typically for a PMCID or DOI-style lookup supported by the OA service. - 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 XML only if the use…