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CodingBar

Track your AI coding agents' footprint — from the macOS menu bar.

More views — Composition · Insights · Light mode

Why

Tokei and CodexBar show you a bill. CodingBar shows you a dashboard: what you and the AI got done, whether it was worth it, and how to spend smarter next time. Tokens and cost are the foundation; insight is the point.

Everything is read from your local Claude Code and Codex logs — incremental, zero external dependencies, no Xcode. The only automatic network call is live quota — a read-only request with your own token (plus an optional, user-triggered update check).

Features

_{Feature cards are illustrative — numbers are sample data.}

• Outcome over spend: pairs git output (+/− lines · commits · files) against today's cost, with $/line and $/commit. Cost you can finally read as work done.
• Live coach: a context fuel gauge for the current session (with 1M-context detection), a quota burn-down forecast, and savings tips like "8 simple tasks ran on Opus — Haiku would've saved $0.9".
• Behavior mirror: your tool-use mix (write / read / run / search), collaboration rhythm, and a golden-hours heatmap — all derived from the tool_use events in your logs.
• A living menu bar: a monochrome pulse that beats with real-time throughput, plus two rows of strict tabular figures — today's tokens / spend and remaining quota, always visible.
• Local-first & private: usage, cost, behavior and git stay 100% offline. The only automatic network call is quota — a read-only GET of your usage, nothing uploaded, no password prompts (an optional, user-tapped update check is the sole exception).
• Native & zero-dependency: pure SwiftPM, no Xcode project, no third-party packages. Reads ~/.claude/projects and ~/.codex/sessions directly.

Install

Download

Grab the latest .dmg (or .zip) from Releases, open it, and drag CodingBar to Applications.

The app is ad-hoc signed (no paid Apple Developer ID), so Gatekeeper warns on first launch. Right-click → Open, or clear the quarantine flag:

xattr -dr com.apple.quarantine /Applications/CodingBar.app

The pulse icon appears on the right of your menu bar.

Build from source

macOS 14+ and a Swift 6 toolchain (Command Line Tools is enough — no Xcode project).

make run        # debug run (pulse icon appears in the menu bar)
make dump       # print the computed Snapshot as JSON (verify the data layer, no GUI)
make test       # runnable self-test
make package    # produce dist/CodingBar.app

The panel

Click the menu-bar item to open a three-tab panel:

• Overview (总览) — outcome next to cost (git output ‖ today's spend), $/line & $/commit, the live coach (context fuel + savings tips), quota bars with burn-down forecasts, and a 7-day trend.
• Composition (构成) — where the money went: spend broken down by model and by project.
• Insights (洞察) — code output, tool-use mix, golden-hours heatmap, savings tips, and a quota-depletion forecast.

How the numbers are computed. Spend is an estimate at pay-as-you-go API prices (Pricing.swift), not your subscription bill — on a Max / ChatGPT plan, read it as "equivalent API value," not money actually charged. Code output is approximate git attribution: all non-merge commits in a session's working directory within the time window — it can't tell hand-written from AI commits and excludes uncommitted work. Codex token totals are de-duplicated from each session's cumulative counter (total_token_usage), so they no longer double-count replayed events.

Privacy

• Usage / cost / behavior / git — 100% local and offline. Reads only ~/.claude/projects/**/*.jsonl and ~/.codex/sessions/**/*.jsonl. Prices are compiled-in defaults (see Sources/CodingBarCore/Pricing.swift).
• Quota — the only automatic networked path. A read-only GET with your own OAuth token to each provider's usage endpoint (Claude api.anthropic.com/api/oauth/usage, Codex chatgpt.com/backend-api/wham/usage). It never uploads local content and never reads billing detail. 5-minute TTL cache.
• Update check — the only other network access: a user-initiated read-only GET to the public GitHub Releases API, fired only when you tap "Check for updates" in Settings. No auth, no telemetry, nothing uploaded.
• No password prompts — Claude's OAuth token lives in the Keychain. A self-signed app reading it directly makes macOS re-prompt endlessly, so CodingBar spawns the Apple-signed /usr/bin/security (inside that entry's trusted ACL) to read it silently, and degrades to "quota unavailable" if it can't. Never a password dialog. Codex uses ~/.codex/auth.json.

Architecture

Pure SwiftPM, two targets, data layer fully decoupled from UI:

• CodingBarCore — the headless, testable data layer: Scanner (incremental cache), ClaudeScanner / CodexScanner, Pricing, Aggregator, the four pillars (Behavior / Fuel / Forecast / Coach) plus GitCorrelator, and Quota/ (Credentials, the Claude/Codex fetchers, and QuotaService with a 5-min TTL cache). It produces one immutable Snapshot.
• CodingBar — the AppKit NSStatusItem + SwiftUI app: UsageStore (@MainActor ObservableObject), RefreshLoop, StatusItemController, MenuBarItemView, and the three-tab panel.

Because the layers are decoupled, swift run CodingBar --dump-json verifies data against real logs with no GUI, and --render-menubar / --render-panel rasterize the UI to PNG offscreen. See CLAUDE.md for the full map.

License

Apache License 2.0. If you fork CodingBar into your own product, a different name and a credit back would be appreciated. Reference projects (KeyStats / Tokei / CodexBar) are kept locally for research only and are not distributed with this repository.