Chat with your coding agents like it's 2005.

Agent Messenger is a Mac app for chatting with the Claude Code, Codex, Gemini and OpenCode coding agents through an interface styled after MSN Messenger 7.5. Every project folder is a contact in a buddy list, and every conversation is a real agent session that can read the project, run commands and edit files.

You can download Agent Messenger for Mac now. It runs on Apple Silicon (M1 or newer). See the first-launch instructions, or try the live demo in your browser with scripted replies.

No. Each conversation runs a real Claude Code, Codex, Gemini or OpenCode session, with the same agent loop, tools and settings as claude, codex, gemini or opencode in your terminal. It can read your project, run commands and edit files.

Not Claude Code: it comes with the app. Codex, Gemini and OpenCode are not bundled, so install the ones you want. Each agent signs in the way it does in your terminal. For Claude Code that is a Claude Code login on this Mac, or an Anthropic API key.

Choose Codex as the Service in Add a Contact. Codex is not bundled, so install the Codex CLI first with npm install -g @openai/codex and run codex login. It uses the same login, config.toml, AGENTS.md and MCP servers as codex in your terminal. Codex contacts have their own Mode menu, and Activities has /compact, /review and your Codex skills. They have no plan approval.

Choose Gemini or OpenCode as the Service in Add a Contact. Neither is bundled. For Gemini, install Gemini CLI 0.33 or newer with npm install -g @google/gemini-cli and run gemini once to sign in. For OpenCode, run npm install -g opencode-ai and opencode auth login. Both use the same settings, commands and MCP servers as in your terminal, and each has its own Mode menu.

Yes. Click Invite in a conversation and pick another contact, whichever service it uses, or click the + there to make a new one with its service and model. Everyone in the conversation works in its folder and answers in turn, each seeing what was said before. Type @ and a name to ask only one of them. An agent can hand over to another the same way, for up to six turns per message. Each agent has its own mode, model and effort level, and what any of them asks for arrives as an invitation that says who is asking.

Yes. Every contact you add in a git repository works in its own git worktree in ~/.agent-messenger/worktrees/, on a new branch, so the folder you picked is never touched. For another agent on the same project, point at a contact and click the + at the end of its row, or right-click it and choose New contact in this project. The branch is already named: press Enter, or type a name of your own. The new contact keeps the service, model and mode of the first. Files git doesn't track, such as node_modules and .env, are not copied. Deleting the contact can remove its worktree too, and the branch and its commits always stay. In a folder that is not a git repository, contacts work in the folder itself.

Yes. Terminal in a conversation's toolbar, or ⌘J, opens your own shell in that contact's folder, beside the conversation. It is a real terminal, so vim, htop, colours and Ctrl+C work as they do in Terminal. The + after the tabs opens another one, each in a tab you can rename and drag into another order. Putting the terminal away keeps its shells running, and closing the window closes nothing: a terminal belongs to its contact. The agent doesn't see what you type or what is printed.

A Claude contact can. Say "open three terminals", or "a terminal for the dev server and one for the tests", and each gets a tab beside the conversation, with the name you gave it. Ask for "two terminals running claude" and the command is typed into each one once its shell is up. You are asked first when a command is to run, and shown the command. It is typed once: the agent can't type into a terminal afterwards, and isn't told what the command prints. Codex, Gemini and OpenCode can't do this yet.

Yes. Every edit in the conversation has a Show changes link. For everything at once, open the Changes tab beside the conversation with Changes in the toolbar or ⇧⌘G. It has a row for every file the folder has not committed yet, with the lines it gained and lost, and a click shows a file's diff as git diff HEAD prints it. It looks again when a turn ends. The tab only reads: it never stages, commits or undoes anything.

Choose Add project in the contact list's ... menu. Open GitHub project... clones a repository: type its address or owner/name, or pick one of your own from a list. Open project... picks a folder that is already on your Mac, and Quick start... starts a new project with a git repository and a first commit, and a private repository on GitHub if you leave that box ticked. Each ends in Add a Contact with the folder filled in. Listing and making repositories needs the GitHub CLI; cloning by address works without it.

Yes. Add a Contact has a GitHub issue or pull request field: type a number or paste a link. An issue names the contact after its title, and the branch after its number and title. A pull request checks out its own branch, also from a fork, so what the contact pushes goes to the pull request. The title, text and link wait in the message box as a draft, and nothing is sent until you press Enter. It needs the GitHub CLI, and the app only reads from GitHub.

Yes. Run in a conversation's toolbar starts your project's own command in that contact's folder. The first time it asks for the command and suggests one, such as the dev script of your package.json. Each contact gets a port of its own in PORT, so several contacts on one project can each run a dev server at once. The conversation shows what was started, a link to localhost and the output. The agent is not told, and Stop Run stops everything the command started.

Yes. Pick a model in Add a Contact, or click the model badge under a conversation to switch later. The list is searchable and takes any model by its exact name, and Add models... chooses which ones it offers. Claude Code and Codex are asked for their own lists, so new models show up by themselves. The effort badge next to it sets how hard the model thinks, for the models that take a level. Both are remembered for the contact, and nothing is written to your Claude Code or Codex settings. Default leaves the model to your own settings for that service.

Yes. Tick Let Claude decide at the bottom of a contact's effort menu and it picks its own level for every message you send. First it replies with a level and a few words on why, then it answers on that level. In a group conversation, Tools > Effort > Let the agents decide works the same way: before anyone answers, one agent names a level for everyone about to answer, such as @Claude(high) @Codex(low). A level you choose yourself holds until the agents pick again. Gemini and OpenCode have no effort levels.

In plan mode, Claude writes a plan and waits for your answer before it changes anything. The plan opens in a pane beside the conversation, and the window grows to make room for it. Each plan has a tab: approve it, or choose No, keep planning and say what should change. The conversation keeps a View plan link, and File > View a plan lists every plan and how you answered it. Codex, Gemini and OpenCode have no plans to approve.

Not unless you let it. Claude, Codex and Gemini ask first by default, and every command or edit arrives as an invitation. The Mode menu can loosen that. Never ask lets the agent run anything, so only use it in folders you don't mind breaking. OpenCode is the exception: its Build mode changes files and runs commands without asking, unless your opencode.json says otherwise.

Hold F2, say your message and let go. What you said is typed into the message box, so you can fix it before you press Enter. Your voice is turned into text on your Mac by whisper.cpp, and the recording never leaves it. Neither whisper.cpp nor its model is bundled: run brew install whisper-cpp and download a model. Tools > Voice clips changes the shortcut, and can send what you said as soon as you stop talking, without waiting for Enter.

It asks the GitHub CLI. Install gh and run gh auth login once. A contact whose branch has a pull request then wears tags at the end of its row that say how it stands: Merged, Conflict, a count such as 2 failing, Running, Passed or Closed. Click the tags to open the pull request on GitHub. A toast tells you when checks start failing or have all passed, and the line under your picture counts the pull requests waiting for your review. The app only reads, and without gh all of it is left out.

Yes. Set your own status to Busy or On The Phone and the toasts, sounds, nudges and dock bounce stop, while the dock icon and the menu bar keep counting. Appear Offline hides the counts too. Nothing is answered for you: when you go back Online, every contact still waiting asks again. The app also shows you as Away after five minutes without input.

On your Mac. Contacts and chat history live in ~/Library/Application Support/Agent Messenger/, and each agent keeps its own session transcripts, such as Claude Code's in ~/.claude/.

Yes. Starting a new chat moves the conversation to message history instead of deleting it. Right-click a contact and choose View message history to browse and search its past conversations, save one as Markdown or delete it. The newest 50 per contact are kept, on your Mac. To look through every contact at once, type in the contact list's search box: from two characters on, it also lists the contacts whose conversations contain your text.

Archive its contact. Right-click it and choose Archive contact: it stops, its conversation window closes and it moves to an Archived section that stays folded. Its message history, folder and worktree are kept. Restore contact brings it back as it was, and its conversation picks up where it left off. For the contacts you use most, Add to favorites lists them at the top.

Yes. Choose Tools > Open emoticon pack folder, drop pictures into emoticons, winks or pictures, and restart the app. GIF, PNG, WebP and JPEG files work. Put an audio file with the same name next to a wink and it plays with sound. The app comes with its own smileys and 15 classic winks, and a file with the same name replaces the bundled one. Make sure you have the right to use what you add.

Yes. Both the app and this demo play the original MSN Messenger message, nudge and sign-in recordings. The 15 bundled winks also play their original soundtracks.

Only anonymous counts, sent to PostHog under a random id: that the app was opened and which of its features were used, such as a terminal or a group conversation, with the app's version and your version of macOS. Nothing you or an agent wrote goes along, nor the name of a folder, file, branch or contact. Turn the counts off with Tools > Share anonymous usage data in the contact list. This page counts its visits and downloads as well, without cookies.

Not yet. The first release is for Macs with Apple Silicon.