Observability & Evals tools for Claude Code

macOS menu bar app showing usage stats for Codex, Claude, Cursor, Gemini without login. On-device parsing

by ryoppippi - A zero-install CLI (npx ccusage) that analyzes Claude Code token usage and cost from local JSONL logs — daily, monthly, per-session, and 5-hour-block breakdowns, a live monitoring mode, and per-model cost estimates. Runs entirely locally, with JSON output for scripting

by sirmalloc - A highly customizable status line formatter for Claude Code CLI that displays model info, git branch, token usage, and other metrics in your terminal

Free, local tool that tracks AI coding token usage and cost across 31 tools and agents by model, project, and task. Worth including because cross-tool cost visibility is the missing prerequisite for agent FinOps in multi-tool teams — most observability tools either require cloud upload or only cover a single provider

(8.2k ⭐) - A real-time Claude Code usage monitor with predictions and warnings

Open-source, real-time cost observability platform for AI agents. Track tokens, costs, messages, and model usage with a local-first dashboard. Supports 28+ LLM models, OTLP ingestion, self-hosted

Observability and enforcement for AI agent harnesses. Capture every run and runtime reliability with policy enforcement. 40 built-in policies, a local dashboard, no account required with a generous free cloud plan

by Ruller_Lulu - A desktop pet that reacts to your Claude Code sessions in real-time — thinking, typing, juggling, sleeping, and more. Yep. It's undeniably endearing. And at the end of the day, isn't that what Claude Code is all about?

(5.9k ⭐) - Local-first session search, analytics, insights, and token-use statistics for Claude Code, Codex, and more than 20 coding agents

(3.8k ⭐) - Local API traffic viewer that attributes Claude Code and Codex token costs to prompts, tools, cache activity, and other request parts

CLI tool for tracking token usage from AI coding agents (OpenCode, Claude Code, OpenClaw, Codex, Gemini CLI, Cursor IDE, AmpCode, Factory Droid) with a global leaderboard and 2D/3D contribution graphs

Open-source LLM observability and evaluation platform for AI agents. Traces agent runs, clusters production failures into issues, and auto-generates evals from real-world failures. Built on OpenTelemetry, self-hostable

(4.4k ⭐) - macOS menu bar app for tracking Claude, Codex, and other AI coding subscriptions, with usage limits, reset times, credits, and spend

February 2026 open-source DevTools for Claude Code that reconstructs hidden session internals from local logs: per-turn token attribution across 7 context categories, full subagent execution trees with cost breakdowns, and syntax-highlighted diffs for every tool call. Essential because Claude Code's default UI deliberately collapses tool details and thinking steps — this tool restores the visibili

Like htop but for AI coding agents. Monitor Claude Code and Codex CLI sessions, tokens, context window, rate limits in real-time

by Haleclipse - A high-performance Claude Code statusline tool written in Rust with Git integration, usage tracking, interactive TUI configuration, and Claude Code enhancement utilities

(3,267 ⭐) - Desktop widget for tracking token usage, costs, limits, and session activity across Claude Code and other coding tools, with multi-device synchronization

(3,303 ⭐) - Local proxy and trace viewer for inspecting coding-agent API requests, prompts, tool calls, streaming responses, and token usage

UK AI Security Institute's eval framework with native support for evaluating external agents (Claude Code, Codex CLI) as black-box targets, plus built-in bash/python/web browsing tools. Built for safety-grade rigor; the right foundation for harness-level eval infrastructure

(2,960 ⭐) - Desktop app that displays coding-assistant usage limits, reset times, and session status in a screen-edge notch, with macOS and Windows versions

Evaluates coding-agent workflows across five dimensions and turns project and session evidence into prioritized, evidence-bounded findings with scoped repair actions. Runs inside Claude Code, Codex, Cursor, GitHub Copilot, and other hosts, making it a practical cross-tool diagnostic layer for improving the harness rather than just reviewing the final diff

by Nizar Selander - A hooks-driven system that monitors file operations in real-time and blocks changes that violate TDD principles

(1.8k ⭐) - A local dashboard for tracking your Claude Code token usage, costs, and session history

by tddworks - A macOS menu-bar app that surfaces remaining usage quota for Claude, Codex, Gemini, Copilot, and other AI coding providers at a glance, with burn-rate, dollar-balance, and reset-countdown indicators plus a lightweight live-session indicator. Swift 6 with a layered Domain/Infrastructure architecture

by disler - A real-time dashboard that captures Claude Code hook events across concurrent agents — tracing every tool call, task handoff, and lifecycle event through a Bun/SQLite/WebSocket/Vue stack, with session tracking and live filtering

Replays Claude Code and Codex sessions on a 3D map of your codebase, turning raw JSONL logs into a spatial view of where the agent searched, read, and edited. The glow-based visualization makes exploration drift and context pressure immediately visible — a concrete debugging primitive for reviewing whether an agent's footprint matched the intended task scope

Independent verification & judging service for AI-agent claims: preregistered gates, third-party recomputation with per-case evidence, and a public errata/ledger of its own published mistakes. Runs LongMemEval-based memory evals and the PRECOR study on quantization-induced judge degradation

(1,144 ⭐) - Self-hostable agent observability and regression-testing platform that grades traces, groups failures, and replays recorded cases in CI to detect regressions

by hoangsonww - A self-hosted real-time dashboard that monitors Claude Code agent activity via its native hooks — live sessions, subagent orchestration trees, tool-call timelines, and per-session status — keeping data local (loopback-only). Built on Node/Express + React + SQLite, with a companion MCP server, VS Code extension, and desktop app

(173 ⭐) - A read-only terminal and browser flow graph for following live Claude Code sessions or replaying saved transcripts

(454 ⭐) - Local observability map for Claude Code, Codex, and Cursor that tracks plans, tool calls, file changes, and progress in real time

(495 ⭐) - See what your coding agent (Claude Code, Codex, Kimi) sends to the model — local proxy + web dashboard

(798 ⭐) - Intercept LLM API traffic and visualize token usage in a real-time terminal dashboard

(796 ⭐) - A beautiful macOS menu bar app for tracking your Claude Code usage in real-time

Hire Google's Antigravity CLI (agy) as a fast Gemini staffer for Claude Code and OpenAI Codex.

Open-source Go CLI that tracks AI API quota usage across 7 providers (Anthropic, OpenAI, GitHub Copilot, MiniMax, and more). Works with Claude Code, Codex CLI, Cursor, Cline, and other vibe coding tools. Background daemon, <50MB RAM, zero telemetry

(626 ⭐) - A web-based Kanban board for viewing Claude Code tasks

Local-first Agent Work Intelligence for coding agents: ingests existing Claude Code, Codex, and OpenCode session logs, attributes tokens and estimated cost to recorded work steps with confidence labels, and surfaces the evidence on a private dashboard with no cloud sync or API keys

Self-hosted platform that runs AI coding agents as persistent scheduled services. Each agent runs in a Docker container with its own workspace and git-backed memory, plus scheduling, an approvals queue, an MCP server and a web console

by mick - A tiny, hook-driven macOS menu-bar indicator of Claude Code's live turn status — an animated icon while thinking or running a tool, a dot when awaiting permission, and an elapsed-turn timer — aggregated across concurrent CLI, Claude Desktop, and Cursor sessions. Stateless AppKit/Swift app that self-launches on session start and quits when idle

by Joe Johnston - A real-time Claude Code observability dashboard installed as a plugin: it registers hooks across the full session lifecycle (tool calls, subagent start/stop, task and permission events) and streams them to a local React UI backed by a Dockerized SQLite server, with filtering, parent/subagent hierarchy, full session replay, and per-model token stats

(617 ⭐) - Transform your Claude Code experience with a beautiful, informative statusline

(594 ⭐) - Diagnostic tool for reviewing Claude Code sessions and finding problems in local agent workflows

(531 ⭐) - Custom status line for Claude Code showing model, tokens, rate limits, and git info in real-time

(537 ⭐) - Analytics dashboard for AI coding agents including Claude Code, Cursor, Windsurf, VS Code Copilot, Zed, Antigravity, OpenCode, and Command Code

by Cole Murray - A Dockerized OpenTelemetry-to-Grafana observability stack for Claude Code that implements Anthropic's observability guidance, surfacing session activity, performance, token usage, and cost in prebuilt dashboards

Desktop app for macOS, Windows and Linux that runs a local LLM gateway for Claude Code, Codex and other AI coding clients: routing rules with failover, conversion between the Anthropic, OpenAI and Gemini APIs, a record of each request's route and cost, and redaction of API keys before requests leave. The gateway engine, ThinkWatch Core, also runs on its own on a Linux server

Self-hosted, local-first observability and kill switch for coding agents, reading Gemini CLI sessions alongside Claude Code, Codex, Cursor, OpenClaw, Aider, Goose, and others. Reads the session logs the runtimes already write on disk, so there is no SDK and nothing in the request path. Shows sessions, transcripts, tool calls, tokens, and cache-aware cost per session and model; an opt-in emergency

(413 ⭐) - A real-time dashboard for monitoring Claude Code sessions across multiple projects

by leeguooooo - The most complete Claude Code status line: 5-hour and 7-day rate-limit usage with reset countdowns and *learned* end-of-window projections, context window, prompt-cache-expiry countdown, per-session cost, plus live todo/tool/git activity — across 3 styles and 9 themes, configurable by CLI or natural-language skill. Genuinely well-engineered (PyPI, 320+ tests, a sub-1%-CPU daemon, d

(237 ⭐) - Real-time dashboard for monitoring multiple Claude Code sessions from a CLI and mobile web UI on macOS

by lis186 - A transparent HTTP proxy and real-time dashboard that sits between Claude Code and the Anthropic API. Captures every request and response without configuration, presenting them in a Miller-column interface with session grouping, token/cost tracking, and context-window visualization

by tombii - A well-maintained and feature-enhanced fork of the glorious ccflare usage dashboard by @snipeship. better-ccflare builds on that foundation with performance enhancements, extended provider support, bug fixes, Docker deployment, and more

Open-source AI test agent CLI by TestMu AI that turns requirements into end-to-end tests and runs them on desktop web, Android and iOS, with every test linked to the acceptance criteria it covers

(116 ⭐) - Live Claude Code dashboard for token use, context health, tool calls, session recovery, and mobile approvals

Lightweight Bash + jq statusline for Claude Code with rate limit pace tracking. Compares burn rate to time remaining in 5h/7d windows, showing whether usage is ahead or behind sustainable pace. Single file, zero dependencies beyond jq

by mag123c - Ultra-fast token &amp; cost tracker for LLM Token Usage (e.g. Claude Code)

(189 ⭐) - This CLI automatically monitors your token usage and posts your stats to the leaderboard after each Claude Code session

(165 ⭐) - Local dashboard for viewing Claude Code and Codex usage limits on a phone, tablet, or small display

Windows-first desktop monitor for local agent processes, configured file activity, TCP endpoints and audit exports. Useful for inspecting a harness's host-side activity; monitoring is observational by default, while selected-action policies and MCP gateways need explicit setup

by phiat - Go-based TUI that streams Claude Code hidden output (thinking, tool calls, subagents) to a separate terminal. Watch multiple sessions simultaneously, filter by content type, and track background tasks. Ideal for debugging or understanding what Claude is doing under the hood without interrupting your main session

by Paul - UndeadList - Comprehensive E2E development workflow with helpful Claude Code subagent prompts for solo devs. Run multiple auditors in parallel, automate fix cycles with micro-checkpoint protocols, and do browser-based QA. Includes strict protocols to prevent AI going rogue

by Stefan Prodan - A live top-style terminal TUI that lists every running Claude Code session with process stats, busy/idle state, context size, model, and git branch, plus a live sub-agent and sub-process tree with open and orphaned ports — reading only the local process table and ~/.claude session and transcript files. Zero-dependency Bun; can signal a runaway session or free orphaned dev-server

by Sverrir Sigurdsson - A native macOS Electron dashboard that auto-discovers running Claude Code CLI sessions and shows live per-session status, git changes, PR checks, and conversation previews across repos and worktrees — and can focus, send input to, approve or reject, kill, or spawn sessions from one place. Electron + Next.js + TypeScript, local-only, via an auto-installed status hook with pr

by minchenlee - A macOS menu-bar app (and companion JSON CLI, built from one Rust/Tauri binary) that auto-discovers running Claude Code sessions by scanning OS processes and shows live working / needs-attention / idle status, plus session-history search, cost tracking, and PM-style worker orchestration. Rust + Tauri 2 + Svelte 5, with a token-gated mobile web client

by nickelsec - Reads Claude Code JSONL session transcripts and draws a project's history as a creatively-styled diagram: a day, the tasks inside it, and every prompt, with the ones that ended in a commit marked. Segments work from pauses in the record rather than anything the user labelled, and prompts can be searched by the words they contain

(107 ⭐) - Customize the status line in Claude Code

(140 ⭐) - Local LLM cost-tracking proxy for OpenAI, Anthropic, Gemini, and pinned OpenRouter calls, with token usage, failure, and billing-integrity receipts

Local-first AI knowledge base and LLM wiki that distills agent work into source-cited pages with graph context and hybrid retrieval across MCP clients

Windows system tray app for monitoring Claude Code token usage in real time. Displays per-session token counts, costs, context window usage, and tool call breakdowns; fetches 5h/1w rate-limit data from the Anthropic API with optional statusLine bridge integration for live data without polling

(83 ⭐) - Python Claude Code Status Line (PyCCSL, pronounced "pixel")

Local-first CLI and dashboard for analyzing AI coding sessions from Claude Code, Cursor, Codex CLI, Copilot CLI, and VS Code Copilot Chat. SQLite-backed with terminal analytics, browser dashboard, and LLM-powered insights

by zihenghe04 - Open-source unified usage dashboard for Claude — track tokens, quota, costs across Claude Code, claude.ai &amp; API in one panel. 开源 Claude 全平台用量监控面板，聚合 Claude Code / claude.ai / API 数据，适用于 Pro/Max 订阅用户与开发者。https://dyp23yngrtumg.ok.kimi.link

Monitor, inspect, and debug all API traffic between AI coding agents and their APIs with a real-time web dashboard

by Gavin M. Roy - A native macOS menu-bar app with desktop widgets showing the live state of every running Claude Code session — active, waiting-for-input, compacting, or idle — across many terminals and IDEs, with one-click focus to any session's exact window, tab, or pane. SwiftUI + AppKit + WidgetKit, driven by a bundled hook plugin with process-tree and JSONL-tail fallbacks

Waybar widget showing real-time Codex token usage and costs. Linux desktop integration

SDLC enforcement plugin with hooks for TDD gates, planning workflow, confidence levels, and cross-model review. Installs via npx agentic-sdlc-wizard init

by lookfree - Desktop workbench that reads Claude Code session files locally and renders the subagent and workflow topology as a live graph, with per-node latency, token cost, and nesting depth. Token spend is broken down by source (base session, skills, subagents, MCP) and can be traced from a cost bucket to the exact message that produced it

by duqaXxX - Reads the JSONL session logs Claude Code already writes and shows, live during a turn, what the session is doing: each model call and tool, the context window filling, every subagent on its own window and its own model, and the commits and files the session produced. Bun + TypeScript server serving a local browser GUI, with an optional Tauri menu-bar tray; single-file binaries per pla

Browse and search past Codex sessions with full context

by rezored - A pixel-art office for Claude Code agents, including a desktop widget and browser app, with tokens, a shop and a lounge. Friday is Hawaiian shirt day

(43 ⭐) - A menulet that tracks your Claude Code token usage

by backstabslash - Fast, zero-dependency cost calculator and customizable statusline for Claude Code. Breakdowns by model, day, project, and branch. Lightweight, single binary, no runtime needed

MCP server that tracks session history, token usage, and cost across agents

by mennanov - A language-agnostic linter (Rust) that keeps co-dependent code, docs, and config in sync, with a Claude Code plugin skill

by Ventuss-OvO - Enhanced statusline for Claude Code — see your 7d/30d spend at a glance

(25 ⭐) - Instrument Claude Code to track actual token usage and cost

Tool-agnostic AGENTS.md authoring kit (MIT) with 15 stack-specific templates, a tool compatibility matrix, an npm CLI + GitHub Action linter (agents-md-lint), and a migrator (agents-md-migrate) that converts .cursorrules, CLAUDE.md, Copilot, Windsurf, Cline, and Aider configs to AGENTS.md. Works across Cursor, Claude Code, Copilot, and 30+ AI coding tools. Free and open source

by briansmith80 - Configurable status bar for Claude Code: usage limits with pacing markers, context window, git state, live activity, session cost, and 8 colour themes. Pure bash, zero dependencies

by sotthang - A native macOS menu-bar app that watches Claude Code and OpenAI Codex CLI session logs in real time and shows each running session's live status, tokens, and cost, with subagent grouping and an optional animated pixel-art view. Swift/SwiftUI + SpriteKit, using FSEvents with incremental JSONL parsing plus multi-provider quota tracking

by Zandereins - Deterministic quality scorer for AI agent instruction files — 8-dimension scoring with security, multi-format (SKILL.md, CLAUDE.md, .cursorrules, AGENTS.md), anti-gaming detection, zero dependencies

by fabioconcina - Claude Code dashboard for Pro/Max users: live rate-limit gauges, calibrated usage forecasts, session costs, memory browser. Single binary, zero config

by wei18 - Upkeep — an AI audit crew for your repo. Catches docs/spec/asset drift with evidence; output-only. Claude Code plugin/skill + reusable CI workflow

by labzink - See where it leaks, stop paying for it — a live Claude Code status line that prices every turn, your subagents, cache rebuilds, plus limits, context and git

Automatically generates and runs tests for every file Claude Code creates or modifies. PostToolUse hook detects changes, generates test scenarios, runs them, and surfaces failures. 8 languages (Python, TypeScript, JavaScript, Go, Ruby, PHP, Java, Rust). Zero config, zero commands

by ctxlint - A CLI linter for AI agent context files that catches stale references, dead commands, and hardcoded secrets, with a modular tested rule set

by EricAndrechek - Native macOS app for tracking Claude Code usage — tokens, cost, rate-limit pacing, per-project breakdowns. SwiftUI + SwiftData

by educlopez - The prettiest statusline for Claude Code — pure bash, never blocks your prompt. Usage quota, context window, git status &amp; more

External: Universal MCP gateway federating 430+ tools from 37 servers through one endpoint. 75% RAM reduction

Verification discipline plugin with six reactive axes (guard, inspect, witness, punch, devil's advocate, scribe) for AI-human collaboration