feat(knowledge): PubMed evidence integration (B2)#117
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EduardPetraeus merged 1 commit intomainfrom Mar 8, 2026
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Add PubMed E-utilities client, evidence cache store with DuckDB backend, MCP tool #10 (search_evidence), and chat engine integration with automatic keyword-to-PubMed mapping. GRADE-inspired evidence hierarchy scoring. - New: PubMedClient (esearch + efetch, rate limiting, XML parsing) - New: EvidenceStore (cache-first strategy, 90-day TTL, DuckDB storage) - New: search_evidence MCP tool for AI agents - Modified: chat_engine with evidence context injection (<evidence> tags) - Modified: create_agent_schema.sql with evidence_cache table - Modified: setup_agent_schema.py with health_graph_edges evidence columns - Tests: 36 new tests covering client, store, tool, and chat integration Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
pubmed_client.py): esearch + efetch, XML parsing, rate limiting, GRADE-inspired evidence hierarchy scoringevidence_store.py): cache-first strategy with DuckDBagent.evidence_cachetable, 90-day TTLsearch_evidence): AI agents can search PubMed for peer-reviewed evidence supporting health claims<evidence>XML context injection with PMID citationsagent.evidence_cachetable + 3 evidence columns onhealth_graph_edgesTest plan
search_evidence("HRV sleep quality")/v1/chatwith health question, verify PMID citations in responseGenerated with Claude Code