Attach to existing sessions
The Mac agent connects to the Claude Code, Codex, or OpenCode session already running in a supported terminal. It does not start a separate agent session or fork the one already in progress.
port22
Freemium
port22 is an iOS app and macOS agent for monitoring and controlling coding-agent sessions running in a terminal. It streams transcripts to iPhone, sends input alerts, and supports Claude Code, Codex, and OpenCode.
What is port22?
port22 pairs an iPhone with a Mac agent that watches coding-agent sessions already open in a terminal. From the phone, users can choose a session, follow its live transcript, send replies, and approve work without opening the Mac terminal.
It supports local-network use and an encrypted relay for connections away from the desk. The product is aimed at individual developers who want to keep track of agent work and respond when a session requires attention.
What can port22 do?
Live transcript streaming
The iOS app displays the agent's activity as it thinks, edits, and runs, including edits as they land in the transcript.
Remote replies and approvals
Users can reply to an agent and approve actions from the phone, rather than returning to the Mac for each interaction.
Push notifications and status views
Push notifications indicate when an agent finishes or needs attention. The site also describes live session counts in the Dynamic Island and a session roster on the lock screen.
LAN and relay connectivity
The connection uses LAN access on the local network and switches to an end-to-end-encrypted relay when the phone is away from that network.
Apple silicon and Intel Mac support
The downloadable Mac agent is a notarized universal app available for Macs using Apple silicon or Intel processors.
Use Cases
“Check a long-running coding task away from the desk”
Start a supported coding agent in a Mac terminal, then use the iPhone to follow its transcript while moving around or traveling.
“Respond when an agent needs input”
Receive a push notification when a session finishes or requires attention, open the relevant session, and reply or approve from the phone.
“Monitor several agent sessions”
Use the session picker and live status information to keep track of concurrent terminal sessions; the free plan allows two sessions at a time.
“Work across local and remote networks”
Use the LAN connection at home or in the office, then continue viewing the same session over the encrypted relay when cellular or another network is needed.
Frequently Asked Questions
Does port22 start or fork coding-agent sessions?
No. The Mac agent attaches to a Claude Code, Codex, or OpenCode session that is already open in a terminal; it does not start a new session or fork the existing one.
Which terminal environments are supported?
The site lists open-source terminals and terminal tools including Ghostty, kitty, Alacritty, WezTerm, tmux, and Terminal.app. It says port22 does not work with Warp or an IDE's built-in terminal.
How are the Mac and iPhone paired?
With the same Apple ID on both devices, they can find each other automatically without a separate port22 login. For devices using different Apple IDs, the site describes pairing directly over the same Wi-Fi with a six-character code shown on the Mac.
Does port22 work away from the Mac's local network?
Yes. It uses LAN connectivity on the local network and an encrypted relay when the phone is away from that network, with the switch described as automatic.
What does the free plan include?
The free plan is described as free forever and includes the whole app on one Mac, two sessions at a time, phone replies and approvals, encrypted relay access, and push notifications. The site lists a founding unlimited plan at $19.99 per year for unlimited Macs and sessions.
Quick Facts
- Category
- Developer tool
- Platforms
- iOS and macOS
- Supported agents
- Claude Code, Codex, and OpenCode
- Mac app
- Notarized universal download for Apple silicon and Intel
- Pairing
- Same Apple ID or six-character code over the same Wi-Fi
- Pricing
- Free for one Mac and two sessions; founding unlimited plan listed at $19.99/year
port22 Traffic Analysis
Traffic data is for reference only.
- Domain Rating
- 17
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