cc-burst

Analyze Claude Code tool burst patterns — how many consecutive calls does each tool make?

npx cc-burst

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

Output

cc-burst — Tool Burst Analyzer
================================
Total bursts: 72,709
Solo calls (burst=1): 47,313 (65.1%)
Deep bursts (≥5): 5,181 (7.1%)
Very deep (≥10): 1,313 (1.8%)
All-time record: Bash × 275

Burst Depth by Tool (sorted by mean burst length)
-------------------------------------------------
WebSearch   ████████████████████ mean 3.62  med 2  max 34
Bash        █████████████████░░░ mean 3.22  med 2  max 275
WebFetch    ████████████░░░░░░░░ mean 2.28  med 2  max 26
Read        █████████░░░░░░░░░░░ mean 1.73  med 1  max 54
Grep        █████████░░░░░░░░░░░ mean 1.67  med 1  max 23
Glob        ████████░░░░░░░░░░░░ mean 1.60  med 1  max 20
Edit        █████████░░░░░░░░░░░ mean 1.71  med 1  max 28
Write       ██████░░░░░░░░░░░░░░ mean 1.27  med 1  max 28
Agent       █████░░░░░░░░░░░░░░░ mean 1.19  med 1  max 4
TodoWrite   █████░░░░░░░░░░░░░░░ mean 1.03  med 1  max 2

What it tells you

• WebSearch bursts deepest (mean 3.62) — web research goes in waves. Find one thing, search for more.
• Bash x275 is the all-time record — deep script loops, automation, or build chains.
• 65.1% of calls are solo — most tool invocations stand alone. Bursts are exceptions.
• TodoWrite never bursts (mean 1.03) — it's a point action. One update, done.
• WebFetch > Read for burst depth — fetching pages goes in clusters; reading files is more scattered.

Session archetypes from burst data

| Pattern | What it means | |---------|--------------| | Long Bash bursts | Deep execution — builds, scripts, test loops | | Long Read bursts | Deep investigation — tracing code, understanding a system | | Long WebSearch bursts | Research mode — gathering info from multiple sources | | Short everything | Shallow, wide work — lots of context switching |

Detail view

npx cc-burst --tool=Bash    # distribution breakdown for Bash
npx cc-burst --tool=Read    # distribution breakdown for Read

Options

npx cc-burst --json         # Raw JSON output
npx cc-burst --tool=Bash    # Detail for a specific tool

Browser version

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

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

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Source: yurukusa/cc-burst