SMS + Codex integration
Connect SMS to Codex
ConnectChats brings your SMS 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 SMS
ConnectChats gives Codex a small set of tools. Codex calls them when you ask about your SMS chats, and only for the chats you share.
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Catch you up
Ask what you missed and Codex reads your unread SMS 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 SMS 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 SMS 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 SMS is linked.
- Codex
What did I miss in my SMS chats today?
- Codex
Summarize the family group on SMS since Friday.
- Codex
Who asked me a question on SMS that I haven't answered?
- Codex
Find the address my sister sent me on SMS.
- Codex
Draft a reply to Alex on SMS saying I can make it Saturday.
How to connect SMS 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 SMS account
- Open https://connectchats.com/app and choose Link a chat app, then SMS.
- On Android, open Google Messages, tap your profile picture, then Device pairing, and scan the QR code shown in ConnectChats.
- On iPhone, install the ConnectChats relay on a Mac signed in to Messages, and turn on Text Message Forwarding for that Mac on your iPhone.
- 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 SMS
Open a new conversation in Codex and ask about your chats. Codex calls ConnectChats when it needs your messages.
How SMS and Codex work together
How SMS works with ConnectChats depends on your phone. On Android, ConnectChats pairs with Google Messages the way Google Messages for web does. On iPhone, texts come through a Mac that receives them with Text Message Forwarding.
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SMS in ConnectChats
SMS and MMS are supported on both phones, and RCS chats on Android. The phone, or the Mac on iPhone, has to stay on and online, because it is the device that actually sends and receives the texts. When a chat is linked, it starts with its last 200 messages, then everything new. Texts are sent from your own number, after you approve them.
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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 SMS stays under your control
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You pick the chats
Codex only sees the SMS 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 SMS, 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 SMS messages?
Yes, once you link SMS 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 SMS messages for me?
Codex can draft a reply and send it after you approve it. Messages go out from your own SMS account. You can allow automatic sending for specific chats, and it stays off everywhere else.
Is the SMS 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 SMS 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 SMS once and use it everywhere.
Does it use my own phone number?
Yes. Texts go out from your phone through your carrier, exactly as if you had typed them. ConnectChats does not give you a new number.
Do I need a Mac for SMS on iPhone?
Yes. Apple gives no other way to reach iPhone texts, so a Mac that stays on is required. Android does not need one.
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
SMS with other AI apps
Other chat apps in Codex
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