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7/14/2026
Claude Code Review Blast Radius: Token Bill Dropped 8-49x With a Tree-sitter Graph

Claude Code Review Blast Radius: Token Bill Dropped 8-49x With a Tree-sitter Graph

Short summary

A practical approach to cutting Claude Code review token costs by 8-49x using Tree-sitter call graphs to limit context to within two hops of a PR diff. The author measured twelve repos and found big repos with small diffs benefit most. The method replaces whole-repo loading and naive RAG with precise BFS traversal of call edges.

  • •Token costs dropped 8-49x by limiting agent context to two-hop blast radius from the diff
  • •Tree-sitter parses code across 12+ languages to build call graphs for BFS traversal
  • •Hop-2 cap is where signal flips to noise; big repos with small diffs benefit most

Generated with AI, which can make mistakes.

#ai-tools#ai-agents#open-source
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