How many files does Claude touch per session? Tracks unique file paths across Read, Edit, and Write calls to measure your session's "blast radius."

npx cc-scope

Zero dependencies. Reads ~/.claude/projects/ directly.

cc-scope — File Scope per Session
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Sessions: 1,710 | Files touched per session:
  Median 4  ·  Mean 10.5  ·  p90 16  ·  max 1,288

Scope distribution:
  1 file     ███████░░░░░░░░░░░░░     242   14.2%  (single-file focus)
  2–5 files  ████████████████████     734   42.9%  (focused)
  6–15       ███████████████░░░░░     548   32.0%  (moderate scope)
  16–30      ███░░░░░░░░░░░░░░░░░     119    7.0%  (broad)
  31+        ██░░░░░░░░░░░░░░░░░░      67    3.9%  (sweeping)

Most-touched file types (by access count):
  .py           16,769
  .gd           12,687
  .md           11,994
  .html          3,927
  .yaml          2,273

• 43% of sessions touch 2–5 files — most Claude Code work is focused, not sweeping
• 14% are single-file sessions — targeted edits or quick lookups
• Only 4% touch 31+ files — broad refactors are rare
• Max 1,288 files in one session — outliers exist for massive refactors or codebase exploration
• p90 is 16 files — even heavy sessions stay surprisingly contained

npx cc-scope          # scope distribution
npx cc-scope --json   # raw JSON output

yurukusa.github.io/cc-scope — drag and drop your projects folder.

Part of cc-toolkit — tools for understanding your Claude Code sessions.

Claude Code Ops Kit ($19) — 16 production hooks + 5 templates + 3 tools. Built from 160+ hours of autonomous operation.

Source: yurukusa/cc-scope