cc-toolbox

How many distinct tools does Claude Code reach for in a session? Focused specialist or full-toolkit generalist?

npx cc-toolbox

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

Output

cc-toolbox — How Many Tools Does Claude Code Use Per Session?
==============================================================
Sessions analyzed: 2,123

Distinct Tool Types Per Session
--------------------------------
1 type     ████████░░░░░░░░░░░░   347   16.3%
2 types    ██████████░░░░░░░░░░   454   21.4%
3 types    ████████████████████   566   26.7%  ← most common
4 types    █████████░░░░░░░░░░░   404   19.0%
5 types    ██░░░░░░░░░░░░░░░░░░   102    4.8%
6-7 types  ██░░░░░░░░░░░░░░░░░░   101    4.8%
8-10 types █░░░░░░░░░░░░░░░░░░░    59    2.8%
11+ types  ██░░░░░░░░░░░░░░░░░░    90    4.2%

Median: 3 tool types  |  Mean: 3.5

Tool Universality (% of sessions each tool appeared in)
----------------------------------------------------------
Read               ████████████████  82.4%
Bash               ██████████████░░  70.3%
Grep               █████████░░░░░░░  43.9%
Glob               ████████░░░░░░░░  40.5%
Write              ████░░░░░░░░░░░░  22.0%
Edit               ████░░░░░░░░░░░░  18.7%
...

Top Tool Trios (most-used 3 tools per session)
-----------------------------------------------
Bash+Grep+Read               ████████████████   342   16.1%
Bash+Glob+Read               ████████████░░░░   236   11.1%
Glob+Grep+Read               ███████████░░░░░   211    9.9%
Bash+Edit+Read               ████████░░░░░░░░   150    7.1%
Bash+Read+Write              █████░░░░░░░░░░░   107    5.0%

What it tells you

• 3 is the magic number — the most common session uses exactly 3 distinct tool types (26.7%)
• 61.7% of sessions use 3 or fewer tools — focused, narrow-scope work dominates
• Read is universal — it appears in 82.4% of all sessions. Almost no session avoids it
• Bash+Grep+Read is the canonical trio (16.1% of sessions) — read context, search for patterns, execute
• 11+ type sessions (4.2%) are the marathon autonomous loops — these sessions touch everything

Session archetypes by tool count

| Count | Archetype | % | |---|---|---| | 1-2 types | Quick lookup / single-task | 37.7% | | 3-4 types | Focused work session | 45.7% | | 5-7 types | Multi-step project | 9.6% | | 8-10 types | Complex session | 2.8% | | 11+ types | Autonomous marathon | 4.2% |

Options

npx cc-toolbox --json    # Raw JSON output

Browser version

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

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

Want to optimize how Claude Code uses its tools?

Claude Code Ops Kit ($19) — 10 production hooks + 6 templates + 3 tools. Built from 140+ hours of autonomous operation.

Source: yurukusa/cc-toolbox