Agent Flow
Local agent visualizer that traces Claude Code and Codex sessions in a browser or VS Code. Open source under Apache 2.0.
Agent Flow is a local visualization tool for developers who want to understand what Claude Code and Codex do during a task. It runs in your browser or inside VS Code, Cursor, and Windsurf, turning agent activity into an interactive graph of tool calls, branches, and subagent coordination. The project is open source under Apache 2.0.
You can inspect individual agents and tool calls, follow their execution order, and spot slow calls or repeated work. A timeline and message transcript give you another way to review a session, while a file attention heatmap shows which files receive attention. The graph supports panning and zooming so you can examine larger runs.
Agent Flow detects Claude Code and Codex sessions concurrently and labels them by runtime. Tabs let you track separate sessions, and Codex activity includes reasoning and token counts drawn from its event stream. JSONL log support lets you replay recorded activity or watch events arrive in a log file.
The visualizer runs on your machine and reads local agent events. Its standalone app requires Node.js; the editor extension works in VS Code-compatible IDEs. The published standalone app sends anonymous usage telemetry by default, with an opt-out. That telemetry includes aggregate activity, model IDs, and system details, but excludes prompts, file paths, and tool-call contents. The VS Code extension and the app run from source send no usage telemetry.
