CodexMonitor: a Tauri desktop app for running several Codex agents at once

What CodexMonitor solves for people running several Codex agents

The README describes CodexMonitor as a Tauri app for orchestrating multiple Codex agents across local workspaces. The problem it targets is concrete: once you have more than one repository open with an agent running, the terminal stops being a good control surface. You lose track of which thread is still running, which one is waiting on an approval prompt, and which one already produced a diff you have not read.

The app answers that with three surfaces. A sidebar manages projects. A home screen shows quick actions and recent agent activity. A conversation view is backed by the Codex app-server protocol. Each workspace gets its own codex app-server process, so threads belong to a project rather than to a single global session.

The intended user is someone who already lives in the codex CLI and wants a GUI layer on top of it, not someone looking for a hosted coding agent. Everything is local-first: the README states that macOS, Linux and Windows remain local-first unless remote mode is explicitly selected.

How the workspace, thread and app-server model fits together

The unit of organisation is the workspace. CodexMonitor persists workspaces so they survive restarts, lets you group and sort them, and spawns one codex app-server per workspace. Threads live under a workspace, and the app can resume threads rather than starting fresh, which is what makes the unread and running indicators meaningful across sessions.

For isolation the app offers worktree and clone agents. Worktrees live under the app data directory, and the README notes that the legacy .codex-worktrees location is still supported. Git CLI is a hard requirement here because worktree operations shell out to it.

The composer is where the agent controls sit. You can attach images through a picker, drag and drop, or paste. Follow-up behaviour is configurable as Queue or Steer while a run is active, and Shift+Cmd+Enter on macOS or Shift+Ctrl+Enter on Windows and Linux sends the opposite follow-up action for a single message. Autocomplete covers skills with $, prompts with /prompts:, reviews with /review, and file paths with @. Model, reasoning effort, access mode and a context usage ring are all exposed in the same area.

There is a second deployment shape. An optional remote backend, described as daemon mode, runs Codex on another machine. The README points at docs/mobile-ios-tailscale-blueprint.md as the canonical runbook for connecting an iOS client to a desktop-hosted daemon over a Tailscale tailnet.

Installing CodexMonitor from source and starting the dev build

There is no package-manager install documented in the README. You build from the repository. The requirements list is specific: Node.js and npm, a stable Rust toolchain, CMake for native dependencies, LLVM and Clang on Windows for the dictation bindings, the codex CLI available as codex in PATH or configured as a custom binary, Git CLI for worktrees, and optionally gh for the GitHub Issues and Pull Requests integration.

Start by installing JavaScript dependencies. The postinstall hook runs the material icons sync script, so expect that step to fire automatically.

npm install

Then launch the desktop app in development mode. Note that the script runs the strict doctor check first and only then hands off to Tauri, so a missing native dependency fails here rather than halfway through a compile.

npm run tauri:dev

If native build errors appear, the README gives one command to diagnose them.

npm run doctor

The first real use is to add a workspace pointing at a repository, then start a thread in that workspace. The app spawns a codex app-server for it. From the composer you can send a prompt, watch reasoning, tool and diff items render, and answer approval prompts as they arrive. If you want to try the headless path instead of the desktop UI, the README documents building the daemon binaries separately.

cd src-tauri
cargo build --bin codex_monitor_daemon --bin codex_monitor_daemonctl

After that build, the daemon control CLI exposes status, start, stop and command-preview subcommands, with overrides for --data-dir, --listen, --token, --daemon-path and --json.

Where CodexMonitor is the wrong tool

The clearest limitation is mobile. The README labels iOS support as work in progress and states plainly that terminal and dictation remain unavailable on mobile builds, while desktop keeps them. iOS also defaults to remote backend mode, which means the desktop daemon must stay running while the phone is connected. If your reason for wanting CodexMonitor is to check on agents from a phone, you are adopting a WIP surface with a hard dependency on a machine you left at home.

The build requirements are the second constraint. A Rust toolchain, CMake, and on Windows LLVM and Clang are not incidental. This is a native desktop app, not a web dashboard you can drop on a server. The terminal dock is labelled experimental in the README, so background command tabs are not something to build a workflow around yet.

Third, the app does not replace the codex CLI. It requires codex in PATH, or a custom binary path configured in app or workspace settings. If your team standardises on a different agent runtime, nothing here applies. And because the app is the orchestration layer rather than the model client, any capability the underlying app-server protocol does not expose will not appear in the UI.

CodexMonitor versus driving the codex CLI directly

The honest alternative is the codex CLI itself. That is what CodexMonitor wraps, and for a single repository with one agent running, the CLI is lighter: no Rust build, no CMake, no native dependency chain, no app to update.

The difference in approach is state. A terminal gives you scrollback and nothing else. CodexMonitor keeps a persistent workspace list, tracks per-thread unread and running state, and resumes threads through the app-server protocol. It also folds in surfaces the CLI does not own: diff stats with staged and unstaged file diffs plus revert and stage controls, a branch list with checkout and create plus upstream ahead and behind counts, and GitHub Issues and Pull Requests through gh. The PR composer's Ask PR action sends pull request context into a new agent thread, which is a workflow the CLI has no equivalent for.

So the split is not capability but coordination. One agent in one repo: the CLI is sufficient and cheaper to maintain. Several agents across several repos, with diffs and approvals to triage: the GUI layer is the point. The README also notes a daemon mode for running Codex on another machine, which the CLI alone does not provide.

Maintenance, release cadence and the MIT licence

The repository is not archived, and the last push was on 2026-03-26. That is roughly six months before the date of this review, so treat the project as one with a real but not current commit history rather than something under continuous development. The release list supports that reading: v0.7.67 landed on 2026-03-24, v0.7.66 on 2026-03-22, and v0.7.65 on 2026-03-22, three releases inside three days. Release bursts followed by quieter stretches are normal for a single-maintainer desktop app, but it does mean you should check the commit log before assuming a fix will arrive quickly.

Upgrade cost is mostly the native toolchain. The package.json wires doctor:strict into tauri:dev and tauri:build, so a dependency that drifts out of the expected version range will block the build rather than warn. In-app updates exist with toast-driven download and install, which softens the cost for end users but not for anyone building from source.

The licence is MIT, which permits commercial use, modification and redistribution provided the copyright notice and permission notice are included. That is a permissive licence, and it is worth noting that the dependency chain (Tauri, the Rust crates, the npm packages) carries its own licences that MIT on this repository does not cover. Nothing here is legal advice; if you ship a product built on this, review the full dependency licences yourself.

Editorial conclusion

Adopt CodexMonitor if you already run the codex CLI in several repositories and want one window that shows thread state, diffs and approvals instead of several terminals. Skip it if you need a stable mobile client today, since the README marks iOS as WIP and terminal plus dictation as unavailable on mobile builds, or if you have no Rust toolchain and no appetite for a native build. Before you commit, run npm run doctor on the checkout, confirm codex resolves in PATH, and read docs/mobile-ios-tailscale-blueprint.md if you plan to drive it from a phone.

Frequently asked questions

Official sources

1. Dimillian/CodexMonitor on GitHub
2. License: MIT
3. Project website
4. README
5. Releases