Agent Tracing Visualizer

Note

Agent Tracing Visualizer is currently in Technical Preview and may be unstable. Features and interface may change in future releases.

Agent Tracing Visualizer is a browser-based visualization dashboard for inspecting and analyzing Kimi Code CLI session traces. It helps you understand agent behavior, view Wire event timelines, analyze context usage, and browse historical sessions.

Launch

Run kimi vis in the terminal to start the Visualizer:

kimi vis

The server automatically opens a browser after startup. The default address is http://127.0.0.1:5495.

If the default port is in use, the server will pick the next available port (by default 5495–5504) and print the access URL in the terminal.

Command-line options

Option	Short	Description
--port INTEGER	-p	Port number to bind to (default: 5495)
--open / --no-open		Automatically open browser (default: --open)
--reload		Enable auto-reload (development mode)

Examples:

# Specify port
kimi vis --port 8080

# Don't automatically open browser
kimi vis --no-open

Features

Wire event timeline

Displays the complete Wire event flow as a timeline, including turn start/end, step execution, tool calls and results. Supports event filtering and detailed information viewing.

Context viewer

Visualizes session context content, including user messages, assistant messages, and tool calls. Helps you understand what the agent "sees" at each step.

Session explorer

Browse and search all historical sessions, grouped by project. View detailed information for each session, including working directory, creation time, and message count.

Session directory shortcuts

At the top of the session detail page, you can use Open Dir to open the current session directory directly. On macOS this opens Finder; on Windows it opens Explorer. Copy DIR copies the raw session directory path so you can continue debugging in a terminal, editor, or issue report.

Session download and export

You can export session data as a ZIP file for offline analysis or sharing.

• ZIP download: Click the download button in the session explorer or session detail page to download the session directory as a ZIP file
• CLI export: Use the kimi export <session_id> command to export a specified session as a ZIP file

Session import

Supports importing ZIP-format session data into the Visualizer for viewing. Imported sessions are stored in a dedicated ~/.kimi/imported_sessions/ directory, separate from regular sessions.

In the session explorer, you can use the "Imported" filter toggle to switch between viewing imported sessions. Imported sessions support deletion, with a confirmation dialog before removal.

Usage statistics

Displays token usage statistics and charts, including input/output token distribution and cache hit rates.