The Slack plugin is for catching up and following up. Ask what happened in a channel while you were away, find the thread where a decision was made, turn a long discussion into an agenda, or draft a reply or weekly update to post. It suits anyone in a busy workspace and leads who need the short version of several channels. In Codex, it brings a bug thread into the session where you fix it.
From the publisher
Work with Slack using the configured Slack integration. App-backed plugin that uses the configured Slack integration. Listed in OpenAI's curated Codex marketplace (openai-curated); the manifest declares an app connector.
What you need
- A Slack account in the workspace you want to use. OpenAI's help center lists Plus, Pro, Business, Enterprise and Edu users as eligible to connect. On Enterprise and Edu, an admin has to enable Slack and give you access first.
- Slack's approval, if your workspace requires it. Where a Slack admin must approve app scopes, they may need to approve or reinstall ChatGPT's Slack app before you can grant new permissions.
- ChatGPT: install from the Plugins tab on the web or desktop app, then use it in Chat or Work on web, desktop or mobile.
- Codex: the ChatGPT desktop app or Codex CLI (
codex plugin add slack@openai-curated). It's also offered if you sign in to Codex with an API key.
Good to know
- It sees what you see. Only messages and files your Slack account can already access are searchable.
- Search depends on your Slack plan. Keyword search works on all Slack plans. Search by meaning needs a Business+ or Enterprise+ workspace with Slack AI Search turned on, and Slack admins can restrict AI features.
- Actions depend on admins. Beyond reading and drafting, which Slack actions you get depends on your Slack authorization and what admins enable; they can switch off any action whose Slack permission they won't approve. By default ChatGPT asks before important actions such as sending messages on your behalf.
- Channels can trigger tasks. On eligible plans, a scheduled task can run on new messages in chosen channels; add
@ChatGPTto each one. Reactions, edits, deletes and DMs don't count, and triggers only work in ChatGPT on the web and mobile. - Disconnecting. Open Settings > Plugins (or Apps), select Slack and choose Disconnect.
Also available as
Install
- 1Add it in ChatGPT
Open Plugins in the ChatGPT sidebar (web or desktop), search for “Slack” and select +. You'll be asked to sign in to any connected service on first use. Then type @ in a chat to call it.
- 2Or install it in Codex
codex plugin add slack@openai-curatedStart a new Codex session afterwards. You can also run /plugins inside the CLI to browse and install interactively.
Things to ask
- “Summarize unread activity, draft replies, or prepare updates”
- “Summarize #eng-announcements from today”
- “Draft a reply to the latest DM from my manager”
Disconnect or uninstall
- 1In ChatGPT
Disconnect an account in Settings → Apps or Plugins. To remove the plugin itself, open Slack in the Plugin Directory and select Uninstall plugin. Uninstalling can disconnect every account connected through it, and plugins your workspace installs may not offer the option.
- 2In Codex
codex plugin remove slack@openai-curated
Slack: common questions
- Can ChatGPT read my Slack messages?
Yes, after you connect your Slack account. ChatGPT can search the channels and DMs you already have access to and read the threads it finds, so "what did we decide about the launch date?" works. Private channels you aren't in stay out of reach, and your Slack plan decides whether search goes beyond keywords.
- Can ChatGPT write Slack messages for me?
It can draft them: a reply in context, a weekly update, or a summary to share, which you then post or edit. Other Slack actions depend on your authorization and on which actions your admins enable, and by default ChatGPT asks before important actions. Setup steps: How to install plugins in ChatGPT.
- Is this the same as @ChatGPT in Slack?
No. The plugin brings Slack into ChatGPT and Codex. @ChatGPT works the other way round: a workspace admin deploys a ChatGPT app inside Slack, and people mention
@ChatGPTin a channel to start a request, which can hand repository work to Codex Cloud. Setup and permissions for the two are separate.- What's the difference between the Slack plugin, app and MCP server?
The Slack app is Slack's connection between ChatGPT and your workspace. The plugin wraps that connection for a one-step install in ChatGPT and Codex. The Slack MCP server is Slack's own server for other AI clients. It requires a registered Slack app, and workspace admins approve each client through Slack's usual app approval.
Learn more
Guide updated Oct 24, 2026. Sources: learn.chatgpt.com, github.com, github.com, help.openai.com, help.openai.com, learn.chatgpt.com, learn.chatgpt.com, learn.chatgpt.com, learn.chatgpt.com, docs.slack.dev.
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