# Codex on Messenger: read and reply, no API keys | SealGate

Let Codex read, triage, and reply across Messenger, no API keys required. Routed through SealGate's firewall, policy-checked and logged. Updated for 2026.

Source: https://sealgate.ai/connect/messenger/codex

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Codex

# Connect Messenger to Codex

Let Codex read, triage, and reply across Messenger, governed by SealGate and policy-checked on every call.

Part of the [Messenger setup guide](https://sealgate.ai/connect/messenger) , which covers every agent and how the connection works under the hood.

Paste this into your coding agent, or run it yourself in a terminal.

Agent prompt easier Terminal faster

## Set up Codex for Messenger, step by step

- 1 ### Create your SealGate account from this link If you do not already have a SealGate account, sign up at the link below. Starting there pre-approves the Beeper connector, so the install needs no dashboard approval afterward. https://dashboard.sealgate.ai/start/personal-messaging?utm_source=sealgate.ai&utm_campaign=seo-connect&utm_content=messenger-codex
- 2 ### Install the connector on your computer Run the installer in a terminal. It sets up the Beeper desktop app bridge and the sealgate-stdiod tunnel that carries your messaging apps to the SealGate gateway. Requires macOS or Windows with Beeper signed in. macOS / Linux Windows (PowerShell) curl -fsSL https://sealgate.ai/install-beeper.sh | SEALGATE_UTM_CAMPAIGN=seo-connect SEALGATE_UTM_CONTENT=messenger-codex bash $env:SEALGATE_UTM_CAMPAIGN='seo-connect'; $env:SEALGATE_UTM_CONTENT='messenger-codex'; powershell -ExecutionPolicy Bypass -Command "irm https://sealgate.ai/install-beeper.ps1 | iex"
- 3 ### Add SealGate to Codex Register the gateway as a streamable HTTP MCP server, then log in. The login opens your browser for OAuth, and codex mcp list should show sealgate afterwards. codex mcp add sealgate --url https://mcp.sealgate.ai/mcp codex mcp login sealgate
- 4 ### Approve the connector if you skipped the signup link If you signed up through the link above, Beeper is already approved. Otherwise open the SealGate dashboard, approve it once, and decide whether Codex may send messages or only read them.
- 5 ### Ask Codex to work with your messages Start a Codex session and ask for something concrete. Codex calls the messaging tools through SealGate, and every call is policy-checked and logged. Summarize my unread message threads and draft replies for me to approve

Please help me connect Messenger to Codex through SealGate on my machine. If I do not already have a SealGate account, have me sign up at https://dashboard.sealgate.ai/start/personal-messaging?utm_source=sealgate.ai&utm_campaign=seo-connect&utm_content=messenger-codex first, since starting there pre-approves the Beeper connector. Then follow the setup steps at https://sealgate.ai/connect/messenger/codex.md and stop whenever I need to act myself: approving this device in the browser when the installer asks, and, only if I already had an account, approving the Beeper connector in the SealGate dashboard.

Requires macOS or Windows (Linux is experimental) with the Beeper desktop app installed.

## Connecting Codex

Codex adds the SealGate gateway as an MCP server in its configuration, so it can call your messaging tools straight from the terminal as you work. See the [Codex setup guide](https://sealgate.ai/docs/getting-started) for the exact steps.

## What Codex can do with Messenger

- Triage unread Messenger chats and draft replies for you to send.

- Summarize a busy group chat so you catch up in seconds.

- Send the same message to several contacts without copy and pasting.

- Search old conversations for a link, photo, or plan someone sent you.

Ready to let Codex handle your Messenger? Paste the setup prompt into your coding agent and you are connected in a couple of minutes.

Copy setup prompt [New to SealGate? Create your account first](https://dashboard.sealgate.ai/start/personal-messaging?utm_source=sealgate.ai&utm_campaign=seo-connect&utm_content=messenger-codex)

## Why connect Messenger through SealGate

One setup for every app, works with cloud and mobile agents, fully governed and logged, and your messages are never stored.

### One setup, every network

The same command connects your whole unified inbox, so you are not wiring up a separate bridge for each app.

### Works with cloud and mobile agents

A local daemon tunnels the connector out, so ChatGPT, Claude, and other cloud agents can use it, not just CLI tools.

### Governed and logged

Every tool call runs through SealGate policies and lands in an audit trail that records only metadata, never your message content, so access stays under your control.

### SealGate never stores your messages

Message content only passes through in transit to be checked against your policies, and is never stored or read by anyone at SealGate.

## Related guides

[Connect ChatGPT to Messenger](https://sealgate.ai/connect/messenger/chatgpt) [Claude on Messenger](https://sealgate.ai/connect/messenger/claude) [Connect OpenCode to Messenger](https://sealgate.ai/connect/messenger/opencode) [Devin on Messenger](https://sealgate.ai/connect/messenger/devin) [Messenger to GitHub Copilot](https://sealgate.ai/connect/messenger/copilot) [Use Grok with Messenger](https://sealgate.ai/connect/messenger/grok) [Messenger to Grokbot](https://sealgate.ai/connect/messenger/grokbot) [Hermes on Messenger](https://sealgate.ai/connect/messenger/hermes) [Use OpenClaw with Messenger](https://sealgate.ai/connect/messenger/openclaw) [Use Lovable with Messenger](https://sealgate.ai/connect/messenger/lovable) [Replit on Messenger](https://sealgate.ai/connect/messenger/replit) [Muse on Messenger](https://sealgate.ai/connect/messenger/muse) [Town on Messenger](https://sealgate.ai/connect/messenger/town) [Codex on WhatsApp](https://sealgate.ai/connect/whatsapp/codex) [Codex on iMessage](https://sealgate.ai/connect/imessage/codex) [Connect Codex to Telegram](https://sealgate.ai/connect/telegram/codex) [Codex on LinkedIn DMs](https://sealgate.ai/connect/linkedin/codex) [Signal to Codex](https://sealgate.ai/connect/signal/codex) [Codex on Instagram DMs](https://sealgate.ai/connect/instagram/codex) [X DMs to Codex](https://sealgate.ai/connect/x/codex) [Discord DMs to Codex](https://sealgate.ai/connect/discord/codex) [LINE to Codex](https://sealgate.ai/connect/line/codex) [All Messenger setups](https://sealgate.ai/connect/messenger) [SealGate vs other MCP gateways](https://sealgate.ai/comparison)

## Connecting Messenger to Codex: FAQ

Can Codex read and send Messenger messages? Yes. Codex adds the SealGate gateway as an MCP server, which lets it use your Messenger tools. Because it runs on your own machine, you can work with Messenger straight from the terminal while you code.

Do I need a Facebook Page or the Messenger Platform API? No. SealGate connects to your own Messenger account through the Beeper desktop app, so there is no Page or Messenger Platform app to set up.

Is it safe to give an AI agent access to Messenger? Your Messenger login is never stored on SealGate's servers. Every tool call runs through SealGate policy checks and an audit log that captures only metadata (which tool ran, when, and which agent ran it), never your message content, so you stay in control without SealGate storing your messages.

What does SealGate store about my messages? SealGate routes each tool call to your connector and back, holding the request and response in memory only long enough to apply your policies, then discarding them. That check is automated: the gateway inspects the traffic programmatically to enforce your rules, and no one at SealGate can read your messages. They are never persisted and never used to train any model. SealGate keeps only call metadata (which tool ran, when, and which agent ran it), never the tool-call parameters or results, so your conversations and who you are talking to are never stored on SealGate's servers.

Does it work with cloud agents, not just CLI tools? Yes. A small local daemon called stdiod tunnels your local Messenger connector to any cloud or mobile agent, so apps like ChatGPT and Claude can use it too, not just CLI tools on the same machine.

Want the full walkthrough? Read the [documentation](https://sealgate.ai/docs/) or email [hello@sealgate.ai](mailto:hello@sealgate.ai) .

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