Feature : Neo4j Search Tool Prototype #20
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Overview
This PR adds a
GraphRetrieverclass (backend/neo4j_search_tool.py) to enable the agent to query graph-structured data (NIFSTD ontology).Why this is needed
As discussed in the roadmap, vector search often misses explicit relationships (e.g., Disease -> Affects -> Brain Region). This tool allows the agent to retrieve these direct connections to augment the context window.
Changes
neo4jdependency.GraphRetrieverwith environment variable configuration.tests/test_neo4j_tool.pyto ensure that the graph retrieval tool works.