Claude Devtools
The missing DevTools for Claude Code — inspect session logs, tool calls, token usage, subagents, and context window in a visual UI. Free, open source.
Install
brew install --cask claude-devtoolsInstall command taken from the project's README or registry entry. Always review code before running it.
README excerpt
Read full README on GitHub →claude-devtools
Your Claude is coding blind. See everything it did.
The debugging tool for Claude Code. Read session transcripts, inspect tool calls, track token usage — directly from the Claude Code logs on your machine.
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The Problem
Claude Code started hiding what it does.
Since v2.1.20, Claude Code replaced detailed output with opaque summaries. Read 3 files. Searched for 1 pattern. Edited 2 files. No file paths. No content. No line numbers. The community backlash was immediate.
But the problem goes deeper than collapsed file paths:
- Thinking steps — Claude's chain-of-thought reasoning is completely invisible in the terminal
- Tool call details — you see a one-line summary, not the actual input/output
- Subagent activity — agents spawn agents, but you only see the final result
- Context window — a three-segment progress bar with no breakdown of what's consuming your tokens
- Team coordination — teammate messages, task delegation, shutdown requests — all buried
The only workaround is --verbose, which dumps raw JSON, internal system prompts, and thousands of lines of noise. There is no middle ground.
The Solution
claude-devtools is the debugging tool for Claude Code. It reads the Claude Code logs and session transcripts already saved to ~/.claude/ on your machine, and reconstructs everything.
| What the terminal hides | What claude-devtools shows |
|---|---|
Read 3 files |
Exact file paths, syntax-highlighted content with line numbers |
Searched for 1 pattern |
The regex pattern, every matching file, matched lines |
Edited 2 files |
Inline diffs with added/removed highlighting |
| Three-segment context bar | Per-turn token attribution across 7 categories with compaction visualization |
| Collapsed subagent output | Full execution trees per agent with tool traces, tokens, duration, cost |
| Nothing about thinking | Extended thinking content, fully visible |
--verbose JSON dump |
Structured, filterable, navigable interface — no noise |
Per-project Claude memory hidden in ~/.claude/projects/.../memory/ |
MEMORY.md rendered as a clickable index of layers; open any layer in your editor |
| Copy from terminal = wrapped lines, ANSI codes, broken Markdown | Real selectable text, one-click copy on every message and code block |
Zero configuration. No API keys. No wrappers. Works with every session you've ever run.
[!TIP] If claude-devtools saves you time debugging Claude Code, leaving a ⭐ on the repo is the single best way to support the project — it helps other developers find it.
Installation
Homebrew (macOS)
brew install --cask claude-devtools
Direct Download
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