Signal + Codex integration
Connect Signal to Codex
ConnectChats brings your Signal chats into Codex. Ask Codex to catch you up, find any message and draft replies. Nothing gets sent until you approve it.
Free to start. No app to install. Every send needs your OK.
What Codex can do with your Signal
ConnectChats gives Codex a small set of tools. Codex calls them when you ask about your Signal chats, and only for the chats you share.
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Catch you up
Ask what you missed and Codex reads your unread Signal chats, then gives you the short version: who needs an answer, what was decided, what can wait.
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Find any message
The address someone sent last month, the price a client agreed to, the link from a group chat. Codex searches your Signal history and quotes the message.
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Draft replies
Codex writes the reply in your tone, in the chat's language, with the context of the whole thread. You read it, edit it, and send it.
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Send with your OK
When you approve a draft, ConnectChats sends it from your own Signal account and confirms delivery. Auto-send only runs in chats where you switch it on.
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Things to ask Codex
Type these in Codex once Signal is linked.
- Codex
What did I miss in my Signal chats today?
- Codex
Summarize the family group on Signal since Friday.
- Codex
Who asked me a question on Signal that I haven't answered?
- Codex
Find the address my sister sent me on Signal.
- Codex
Draft a reply to Alex on Signal saying I can make it Saturday.
How to connect Signal to Codex
It takes about two minutes. You do it once, and the same account then works in every AI app you add.
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Add ConnectChats to Codex
- In your terminal, run: codex mcp add connectchats --url https://api.connectchats.com/mcp
- Run codex mcp login connectchats. Your browser opens the ConnectChats sign-in page. Sign in with your passkey.
- Start Codex and ask about your messages.
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Link your Signal account
- Open https://connectchats.com/app and choose Link a chat app, then Signal.
- On your phone, open Signal, go to Settings, then Linked devices, and tap Link a new device.
- Scan the QR code shown in ConnectChats.
- Your chats then appear in the dashboard, where you choose which ones your AI app can see.
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Pick the chats Codex can see
Every chat is listed in your ConnectChats dashboard. Share all of them or only the ones you choose. Codex never sees the rest.
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Ask Codex about your Signal
Open a new conversation in Codex and ask about your chats. Codex calls ConnectChats when it needs your messages.
How Signal and Codex work together
ConnectChats links to your Signal account as a linked device, the same way Signal Desktop does, and brings in the chats you choose. Your phone stays your main device, and you can unlink ConnectChats from it at any time.
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Signal in ConnectChats
One to one chats and groups are supported. Signal gives a newly linked device little or no past history, so most chats start from the moment you link. Messages are decrypted on our server so your AI app can read them, then stored encrypted with a key only your passkey can unlock. Photos, videos and voice notes show up as short text descriptions, with their captions.
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ConnectChats in Codex
Codex adds remote MCP servers from the command line and keeps them in config.toml. Add ConnectChats once, sign in with your passkey, and Codex can read and search the chats you share. The command writes a [mcp_servers.connectchats] entry with url = "https://api.connectchats.com/mcp" to ~/.codex/config.toml. You can also add it there by hand. Codex CLI, the Codex IDE extension and the desktop app share this configuration, so you set it up once. On a machine without a browser, run codex mcp login connectchats --no-browser, open the printed link elsewhere and paste the redirect URL back. Codex needs a ChatGPT plan that includes Codex, or an OpenAI API key.
Your Signal stays under your control
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You pick the chats
Codex only sees the Signal chats you share. Unshare a chat and it disappears from every AI app at once.
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Drafts by default
Codex prepares replies. You approve each one before it reaches Signal, unless you turn on auto-send for that chat.
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Stored messages are encrypted
Stored messages are encrypted with a key that only your passkey can unlock. We never train models on your messages.
Questions
Can Codex read my Signal messages?
Yes, once you link Signal in ConnectChats and add ConnectChats to Codex. Codex reads only the chats you share, and only when you ask it something that needs them.
Can Codex send Signal messages for me?
Codex can draft a reply and send it after you approve it. Messages go out from your own Signal account. You can allow automatic sending for specific chats, and it stays off everywhere else.
Is the Signal to Codex integration free?
Yes. The free plan links two chat apps and works in every supported AI app, with no limit on what you ask. No card needed.
Do I need to install anything?
No. You add ConnectChats inside Codex and link Signal from your browser. There is no app to download and nothing runs on your computer.
Does it work with other AI apps too?
Yes. The same ConnectChats account works in ChatGPT, Claude, Grok, Manus, Muse and any AI app that supports remote MCP servers. Link Signal once and use it everywhere.
Does linking ConnectChats weaken Signal's encryption?
Signal still encrypts messages on their way to every device, including ConnectChats. ConnectChats is one of those devices, so it can read the messages it receives. It then stores them encrypted with a key only your passkey can unlock. If you want a chat to stay out of it, do not share it, or do not link Signal.
Will I see my old Signal messages?
Mostly not. Signal shares little or no history with a newly linked device, so expect messages from the moment you link onward.
What do I need to link Signal?
Only Signal on your phone. Open https://connectchats.com/app, choose Signal, then scan the QR code from Settings, Linked devices, Link a new device in Signal.
Is this the same as adding ConnectChats to ChatGPT?
No. ChatGPT on the web does not read your Codex config, so you add ConnectChats there separately. Both use the same ConnectChats account.
Can Codex send messages from a script?
Codex can create drafts in any run. They are only sent after you approve them, unless you turn on auto-send for that chat.
Related pages
Signal with other AI apps
Other chat apps in Codex
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