What changes when you add an agent to GraphRAG? Here's a quick Q&A ๐ธ๏ธ
Agentic GraphRAG: How does an AI agent use a knowledge graph?
โ How is it different from regular GraphRAG?
๐ก The agent gets control of graph retrieval. At runtime it decides where to start, which tool to call, how far to follow relationships, and when it has enough context.
โ How does it work in practice?
๐ก A ReAct loop: check the schema, run a query, observe the result, repeat. "Which other customers hit the same issue?" takes three steps:
ใปVector search finds the matching ticket
ใปA query finds the error the ticket reports
ใปA query reaches other customers who reported that error
โ Is it safe to let it write to the graph?
๐ก Only if reads and writes are separated. Writes are guarded by narrow permissions, schema checks, confidence thresholds, or human approval. A context graph that stores past decisions and outcomes extends the same idea.
โ When is it worth building?
๐ก When retrieval paths vary by question, the domain keeps changing, or past decisions should inform future ones. Fixed paths are often faster, so start with a working GraphRAG and add autonomy only where it falls short.
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