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Observability layer for Claude Code — live token tracking, cost analytics, quota guard, loop detection, and usage dashboard. The htop for Claude Code.

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    Readme

    claudestat

    Real-time execution trace and cost intelligence for Claude Code

    Hook into every tool call, token, and dollar — as it happens. Works with Claude Pro, Max 5, and Max 20. Zero cloud dependencies. Pure Node.js. Runs on macOS, Linux, and Windows.

    npm version npm downloads License: MIT Node.js Platform Tests PRs Welcome

    InstallationQuick StartCommandsDashboardContributing

    ClaudeStat dashboard


    See it in action

    Live dashboard · terminal trace · quota guard — all running in real time

    claudestat demo


    Why?

    You're burning tokens right now and you have no idea how many, on what, or whether Claude is stuck in a loop.

    Claude Code is powerful — but it's a black box while it runs. You can't see what it's spending, how deep the context is, whether it's looping, or if you're about to hit your quota limit.

    claudestat fixes that. It taps into Claude Code's hook system to capture every event, stores it locally in SQLite, and shows you everything in a live dashboard or terminal trace.

    • Live tool trace with duration and token cost per call
    • Quota guard with configurable kill switch (block new sessions at X%)
    • Pattern analyzer: detects loops, Bash overuse, low cache reuse, and more
    • Per-session cost breakdown + cache savings + burn rate
    • AI-generated weekly usage reports

    If claudestat is useful, give it a ⭐ — it helps other developers find it.


    How it works

    Claude Code event
          │
          ▼
      Hook script  (~/.claudestat/hooks/event.js)
           │  POST JSON to daemon
           ▼
      Daemon  (localhost:7337)
           │  stores events in SQLite
           │  enriches with JSONL token data
           │  runs pattern analyzer
           ▼
      Dashboard  (React + Vite, auto-refreshes)
           │
           ▼
      You see everything — live

    Windows paths: Claude Code stores its data in ~/.claude/ on all platforms (macOS, Linux, and Windows). ClaudeStat detects the correct path automatically.


    Requirements

    • Node.js >= 22 (required for node:sqlite)
    • Claude Code installed (npm install -g @anthropic-ai/claude-code)

    Installation

    npm install -g @statforge/claudestat

    Using NVM? Make sure you're on your default Node version before installing to avoid stale binary conflicts:

    nvm use default && npm install -g @statforge/claudestat

    Works with nvm (macOS/Linux) and nvm-windows.

    Then wire up the hooks into Claude Code:

    claudestat install

    This modifies ~/.claude/settings.json to add SessionStart, PreToolUse, PostToolUse, and Stop hooks. A backup is created before any change.

    Restart Claude Code after installing so the hooks take effect.


    Quick Start

    # 1. Start the background daemon
    claudestat start
    
    # 2. Open the dashboard in your browser
    #    macOS:
    open http://localhost:7337
    #    Windows:
    start http://localhost:7337
    #    Linux:
    xdg-open http://localhost:7337
    
    # 3. Or watch a live terminal trace
    claudestat watch

    That's it. Start a Claude Code session and watch the events flow in.


    Commands

    Command Description
    claudestat start Start the background daemon
    claudestat stop Stop the daemon
    claudestat restart Restart the daemon
    claudestat install Install hooks into Claude Code
    claudestat uninstall Remove hooks from Claude Code
    claudestat watch Live terminal trace view
    claudestat status Show quota, cost, and burn rate
    claudestat config View or edit configuration
    claudestat top Rank tools by cost, call count, or duration
    claudestat export [format] Export session data to JSON or CSV
    claudestat doctor Check installation health and diagnose issues

    claudestat watch

    Live terminal trace — every tool call as it happens, with duration and token cost.

    claudestat watch
    
      ● Session a3f1bc · my-project · claude-sonnet-4-5
    
      16:42:01  Bash            342ms    1,240 tok   $0.0018
      16:42:03  Read             89ms      420 tok   $0.0006
      16:42:05  Edit            124ms      890 tok   $0.0013
      16:42:08  Agent (haiku)    2.1s    3,200 tok   $0.0024
      16:42:11  Write            67ms      310 tok   $0.0004
    
      Context: 42,800 / 200,000 (21%)  │  Session cost: $0.0065  │  🟢 healthy

    claudestat top

    Ranks your most-used tools by estimated cost, call count, or duration across all sessions.

    claudestat top
    
      🏆 claudestat top — by est. cost (last 30 days)
    
      #  Tool              Calls    Duration   Est. Cost      %
      ── ───────────────── ──────── ───────────── ───────── ────
       1  Bash              1,240       18.3m     $1.24    38%
       2  Read                890        4.1m     $0.87    27%
       3  Edit                430        2.8m     $0.61    19%
       4  Agent (haiku)       120        9.2m     $0.38    12%
       5  Write               210        1.1m     $0.12     4%

    Options: --by cost|count|duration · --days 7|30|90 · --limit N

    claudestat status

    claudestat status
    
      Quota 5h   45/50 prompts (90%)  |  reset in 22m
      Plan        MAX5
      Sonnet      3.2h / 5h  this week
      Burn rate   1,240 tok/min

    claudestat doctor

    Diagnoses common installation problems — useful if claudestat start fails or hooks are not firing.

    claudestat doctor
    
    🩺 claudestat doctor
    ──────────────────────────────────────────────
      ✓  Node.js version (22.17.0)
      ✓  Claude Code installed
      ✓  Hooks installed in Claude Code
      ✓  ~/.claudestat/ data directory exists
      ✓  Hook script deployed (~/.claudestat/hooks/event.js)
      ✓  Daemon running (localhost:7337)
      ✓  Global CLI symlink valid
    ──────────────────────────────────────────────
      All checks passed — claudestat is healthy!

    If a check fails, doctor prints the exact fix command to run.


    claudestat export

    Export session data to JSON or CSV. Supports date and project filters.

    # Export all sessions as JSON to stdout
    claudestat export
    
    # Export as CSV to a file
    claudestat export csv --output ~/sessions.csv
    
    # Filter by date range
    claudestat export json --from 2025-05-01 --to 2025-05-31
    
    # Filter by project name (case-insensitive substring match)
    claudestat export csv --project myapp --output myapp-sessions.csv
    
    # Multiple filters combined
    claudestat export json --from 2025-05-01 --project claudestat --output may-claudestat.json

    Options: --from YYYY-MM-DD · --to YYYY-MM-DD · --project <name> · --output <path>

    Each row includes: id, started_at, cwd, project_path, total_cost_usd, total_input_tokens, total_output_tokens, efficiency_score, loops_detected.


    claudestat config

    # Enable kill switch — block new sessions when quota exceeds 95%
    claudestat config --kill-switch true --threshold 95
    
    # Force plan detection instead of auto
    claudestat config --plan max5   # pro | max5 | max20 | auto
    
    # Disable daemon rate limit alerts
    claudestat config --alerts false

    Config is stored at ~/.claudestat/config.json (macOS/Linux) or %USERPROFILE%\.claudestat\config.json (Windows).


    Dashboard

    The dashboard lives at http://localhost:7337 and has six tabs:

    Live

    Real-time stream of every tool call in the active session. Shows tool name, duration, and token cost. Agent sub-calls expand into nested traces; Skill invocations collapse into labeled containers.

    Live tab

    History

    All past sessions sorted by date. Each card shows total tokens (input + cache read + output), USD cost, efficiency score, and detected loops. Click any session to open its full tool trace, DAG view, and a compare panel.

    History tab

    Projects

    Grid of every project you've worked on. Shows last active date, total sessions, cost, model usage breakdown (Sonnet / Haiku), and an efficiency progress bar.

    Projects tab

    Analytics

    • 6 KPIs: total cost, tokens, cache savings, hidden loop waste, avg efficiency, session count
    • Token/cost trend charts (7 / 30 / 90 days)
    • Hours by project
    • AI-generated weekly reports (auto-scheduled or on demand)

    Analytics KPIs

    Analytics charts

    Top

    Tool rankings across all your sessions. Sortable by estimated cost, call count, or duration — with a time filter (7 / 30 / 90 days). Also shows projected weekly and monthly spend based on your recent burn rate.

    Top tab

    System

    Daemon health, DB size, Node version, config file paths, and memory context.

    System tab


    Configuration reference

    Config is stored at ~/.claudestat/config.json (macOS/Linux) or %USERPROFILE%\.claudestat\config.json (Windows) and created automatically on first run.

    {
      "killSwitchEnabled": false,
      "killSwitchThreshold": 95,
      "warnThresholds": [70, 85, 95],
      "plan": null,
      "alertsEnabled": true,
      "reportsEnabled": false,
      "reportFrequency": "weekly",
      "reportDay": 1,
      "reportTime": "09:00"
    }
    Key Default Description
    killSwitchEnabled false Enable the quota kill switch. When true, new Claude Code sessions are blocked once your quota reaches the threshold.
    killSwitchThreshold 95 Quota percentage (0–100) at which the kill switch activates. Only relevant when killSwitchEnabled is true.
    warnThresholds [70, 85, 95] Three quota percentages for yellow, orange, and red warnings in the dashboard and daemon alerts.
    plan null Force plan detection. Valid values: "pro", "max5", "max20". Leave null to auto-detect.
    alertsEnabled true Enable daemon rate limit alerts — polls quota every 60s and logs a warning (with optional desktop notification) when thresholds are crossed.
    reportsEnabled false Enable automatic AI-generated usage reports on a schedule.
    reportFrequency "weekly" How often to generate reports. Valid values: "weekly", "biweekly", "monthly".
    reportDay 1 Day of week for reports (0=Sun, 1=Mon … 6=Sat).
    reportTime "09:00" Time of day (HH:MM) when the report is generated.

    You can edit the file directly or use the CLI:

    # Enable kill switch at 90% quota
    claudestat config --kill-switch true --threshold 90
    
    # Force plan (useful if auto-detect is wrong)
    claudestat config --plan max5

    Troubleshooting

    claudestat start hangs for ~5 seconds Normal — require('express') takes a few seconds on first load. The daemon is starting.

    Hooks are not firing / dashboard shows no events Run claudestat doctor — it checks every component and prints the exact fix command. If hooks were installed before upgrading, run claudestat uninstall && claudestat install to refresh.

    claudestat command not found after install If using NVM, the binary may point to the wrong Node version:

    nvm use default && npm install -g @statforge/claudestat
    hash -r claudestat   # macOS/Linux — refresh shell binary cache

    Working with multiple projects claudestat tracks every project automatically. The Projects tab groups sessions by working directory. Use claudestat export --project <name> to export data for a specific project.

    Approaching rate limit When the daemon is running, it polls quota every 60s and logs a warning to stderr when you cross 70%, 85%, or 95%. On macOS and Linux you also get a desktop notification at the killSwitchThreshold. To see current quota at any time: claudestat status

    Kill switch is blocking new sessions The kill switch only activates when killSwitchEnabled: true AND cyclePct >= killSwitchThreshold. To disable: claudestat config --kill-switch false Or wait for the 5h quota window to reset (check time remaining with claudestat status).

    node:sqlite experimental warning Expected on Node 22+. claudestat suppresses it automatically — you won't see it in normal use.


    Roadmap

    Planned for upcoming versions:

    • Multi-account support — track usage across multiple Claude accounts
    • Slack / webhook alerts — get notified when quota reaches warning thresholds
    • VS Code extension — sidebar panel with live stats inside the editor

    Have an idea? Open an issue or submit a PR.


    Uninstall

    claudestat uninstall        # removes hooks from Claude Code settings
    
    # macOS / Linux:
    rm -rf ~/.claudestat        # removes DB, config, and PID file
    
    # Windows (PowerShell):
    Remove-Item -Recurse -Force "$env:USERPROFILE\.claudestat"

    Contributing

    claudestat is open source and PRs are welcome.

    Whether you want to fix a bug, improve a dashboard view, add a new pattern to the analyzer, or support a new provider — contributions are encouraged.

    How to contribute

    1. Fork the repository
    2. Create a branch: git checkout -b feat/your-feature
    3. Make your changes
    4. Run the test suite: npm test (208 tests)
    5. Open a PR with a clear description of what you changed and why

    Good first areas

    • Pattern analyzer (src/pattern-analyzer.ts) — add new usage patterns or improve thresholds
    • Dashboard components (dashboard/src/components/) — UI improvements, new charts, accessibility
    • New commands — ideas like claudestat compare
    • Bug reports — open an issue with steps to reproduce and your Node/OS version

    Running locally

    git clone https://github.com/YOUR_USERNAME/claudestat
    cd claudestat
    npm install
    npm run dev:full   # starts daemon + dashboard hot-reload together
    npm test           # run all tests

    See CONTRIBUTING.md for full guidelines.


    FAQ

    What is claudestat? claudestat is a real-time token monitoring and cost analytics tool for Claude Code. It captures every tool call, token usage, and API cost as it happens — locally, with zero cloud dependencies.

    How do I monitor Claude Code token usage? Install with npm install -g @statforge/claudestat, run claudestat start, and open http://localhost:7337 for the live dashboard.

    How do I track Claude Code costs? claudestat records every session's token usage and estimates API cost per tool call. Use claudestat status for a quick summary or claudestat export for full data export.

    How do I get alerted when Claude Code hits the rate limit? claudestat polls your quota every 60 seconds and sends desktop notifications when you cross 70%, 85%, or 95%. Configure with claudestat config --alerts true.

    Does claudestat work with Claude Pro, Max 5, and Max 20? Yes. claudestat auto-detects your plan. You can also force it with claudestat config --plan max5.

    Is my data sent to any server? No. All data is stored locally in SQLite at ~/.claudestat/. Zero cloud dependencies.

    Does claudestat work on Windows? Yes — macOS, Linux, and Windows are all supported.


    License

    MIT — use it, fork it, ship it.