LINE + Codex integration
Connect LINE to Codex
ConnectChats brings your LINE 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 LINE
ConnectChats gives Codex a small set of tools. Codex calls them when you ask about your LINE chats, and only for the chats you share.
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Catch you up
Ask what you missed and Codex reads your unread LINE 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 LINE 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 LINE 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 LINE is linked.
- Codex
What did I miss in my LINE chats today?
- Codex
Summarize the family group on LINE since Friday.
- Codex
Who asked me a question on LINE that I haven't answered?
- Codex
Find the address my sister sent me on LINE.
- Codex
Draft a reply to Alex on LINE saying I can make it Saturday.
How to connect LINE 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 LINE account
- Open https://connectchats.com/app and choose Link a chat app, then LINE.
- Sign in with the email address and password registered to your LINE account. Set them in LINE under Settings, Account if you have not.
- LINE shows a verification code, which you confirm in LINE on your phone.
- Your chats 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 LINE
Open a new conversation in Codex and ask about your chats. Codex calls ConnectChats when it needs your messages.
How LINE and Codex work together
ConnectChats signs in to your LINE account the way LINE for PC does, and your AI app sees the chats and groups you share. Your phone stays your main device.
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LINE in ConnectChats
One to one chats and groups are supported. LINE official accounts you follow appear as chats too. Stickers show up as short text descriptions, along with photos, videos and voice messages. Each linked chat starts with its last 200 messages, then every new message arrives as it is sent. LINE allows one PC sign-in at a time, so linking ConnectChats may sign out LINE on your computer.
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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 LINE stays under your control
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You pick the chats
Codex only sees the LINE 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 LINE, 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 LINE messages?
Yes, once you link LINE 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 LINE messages for me?
Codex can draft a reply and send it after you approve it. Messages go out from your own LINE account. You can allow automatic sending for specific chats, and it stays off everywhere else.
Is the LINE 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 LINE 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 LINE once and use it everywhere.
Does it understand Japanese or Thai chats?
Yes. Your AI app reads messages in their original language and can summarize them or draft replies in that language, or translate them for you.
Do I need to register an email in LINE?
Yes, because LINE uses your email and password for sign-ins on other devices. You can add one in LINE under Settings, Account.
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
LINE with other AI apps
Other chat apps in Codex
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