abtop

abtop is an open-source terminal UI tool built in Rust by Tae Hwan Jung (graykode) that brings btop-style process monitoring to AI coding agent sessions. It runs entirely read-only against local process and file state — no API keys, no authentication required — and supports Claude Code, Codex CLI, and OpenCode across macOS, Linux, and Windows.

What It Is

abtop is a TUI (terminal user interface) dashboard that aggregates live data from multiple AI coding agent sessions running on your machine. Inspired by btop and htop, it surfaces per-session metrics — token counts, context window fill percentage, rate limit status, child processes, and open ports — all in a single terminal view. It is written in Rust using the ratatui library and released under the MIT license.

How It Works

abtop discovers agent sessions from local process metadata and config files rather than intercepting network traffic or requiring API credentials:

• Claude Code sessions are read from ~/.claude and any additional profile roots configured in config.toml
• OpenCode sessions are read from a local SQLite database at ~/.local/share/opencode/opencode.db
• Codex CLI sessions are discovered from local process state
• Port detection uses sysinfo on macOS/Linux and netstat -ano on Windows
• Session summaries are generated via claude --print, which is the only indirect network call

The tool exposes a --json flag and a Rust library crate so other tools can consume the same data layer without re-scanning.

Supported Agents and Feature Matrix

Feature coverage varies by agent. As of the README:

• Claude Code: full support — session discovery, token tracking, context window %, status detection, current task, rate limits, git status, children/ports, subagents, and memory status
• Codex CLI: session discovery, token tracking, context window %, status, current task, rate limits, git status, children/ports
• OpenCode: session discovery, token tracking, status, git status, children/ports (no context window %, current task, rate limits, subagents, or memory status)

Themes and Customization

abtop ships with 12 built-in themes including popular developer palettes (dracula, catppuccin, tokyo-night, gruvbox, nord) and 4 colorblind-friendly options (high-contrast, protanopia, deuteranopia, tritanopia). Light themes (solarized cream and GitHub-style white) are available for bright terminals. Theme selection persists to ~/.config/abtop/config.toml and can be cycled at runtime with the t key.

Configuration also supports hiding specific agent CLIs, adding extra Claude profile roots to scan, and setting the UI language (English or Simplified Chinese, with auto-detection from LANG).

Update: v0.5.1

The latest release is v0.5.1, published on 2026-06-29. The project was created in March 2026 and has accumulated over 3,100 stars and 290 forks on GitHub as of the last recorded update. Recent development — credited in the README to contributor @tbouquet — added themes, a config overlay, panel toggles, session filtering, a subagent tree view, a context window gauge with compaction detection, and security hardening. The project is actively maintained with 18 open issues at last check.