Skip to content

Connect Codex to Notion

Connect Codex to Notion in 3 steps: 1. Sign in to ApexGenius and connect Notion. 2. Add the ApexGenius plugin. 3. Start using Notion in Codex. Start in Plugins in the ChatGPT desktop app and authorize your connection.

Start freeSee the setup

1,000 free credits · No card required

How to connect Notion to Codex

  1. 1Sign in to ApexGenius and connect Notion
  2. 2Add the ApexGenius plugin to Codex
  3. 3Start using Notion in Codex
  1. 1ApexGenius

    Connect Notion to ApexGenius

    Open Notion in ApexGenius

    Open Notion in Connections and choose Connect.

  2. 2ApexGenius

    Connect ApexGenius to Codex

    Choose Codex

    Back on Start, pick Codex and copy the prompt.

  3. 3ApexGenius

     

    Approve access

    ApexGenius opens its approval page. Review the access, then approve.

Then ask Codex

Show the name of the Notion user connected to ApexGenius. Discover the current-user read operation first, then use the read-only route. Do not open or change workspace content.

Start free
Written setup, step by stepShow

Before you start

  • A Notion account with access to the workspace you want to connect.
  • Permission from your workspace owner if your organization limits MCP connections.

1. Connect Notion to ApexGenius

  1. Open Notion in Connections. Sign in to ApexGenius, open Connections, choose Notion, and select Connect.
    The Notion page in ApexGenius before you connect, with the Connect button in the header and the Not connected empty state.
    Open Notion in Connections and choose Connect to start setup.Open full-size image (opens in a new tab)
  2. Choose the account and review access. Sign in to the intended Notion account. Choose your workspace and review Notion’s requested access. Return to ApexGenius after authorization.
  3. Check the workspace and tools. Open Tools and enable the intended workspace resource. Your existing Notion permissions set the content boundary. Choose Read only when adding your AI agent for the first test.
  4. Verify the connected account. Use Test connection, then ask your AI the question below. Compare the returned user with the account you authorized and check Tool Activity.
Connect Notion →

2. Connect ApexGenius to Codex

  1. In the desktop app, open Settings, then MCP servers and Add server.
  2. Name the server ApexGenius, choose Streamable HTTP, and paste the MCP address above.
  3. Save, then select Restart. Choose Authenticate for ApexGenius and complete the browser sign-in.
  4. When ApexGenius asks what this AI client may use, choose Read only for the first test, or Custom to limit it to the tools you need.
  5. Start a new conversation and select ApexGenius from the available tools before asking for live data.
Official Codex setup instructions ↗

Watch the setup

Follow each step at your own pace.

Codex desktop app with Plugins selected and ApexGenius listed under Available to your account.
Open Codex in the ChatGPT desktop app, then Plugins, and find ApexGenius.Open full-size image (opens in a new tab)

Step 1 of 4Open Plugins

The walkthrough uses the original ChatGPT web plugin captures. After connecting, open Codex in the desktop app and start a new task with ApexGenius. A ChatGPT web connection does not verify Codex access.

A public ApexGenius plugin listing is not verified. Use a plugin shared with you or one you created, subject to your account and workspace policy.

OpenAI Plugins guide (opens in a new tab)Full Codex setup guide
Create a personal plugin

Where Developer mode is available, open ChatGPT Settings, then Security and login, and enable it. In Plugins, select the plus button, enter ApexGenius and a description, then add this URL under Connection. Create the connection, complete OAuth, and review the tools. Return to Codex in the desktop app and start a new task with the plugin enabled.

https://server.autom8.pro/mcp
OpenAI custom connection guide (opens in a new tab)
No plugin available? Use desktop settings
  1. In the ChatGPT desktop app, open Settings, then MCP servers, then Add server.
  2. Name the server ApexGenius, choose Streamable HTTP, and paste the MCP address below.
  3. Save, select Restart, then Authenticate. Sign in to ApexGenius and authorize the intended connections and access.
  4. Start a new Codex task and ask one read-only question. Check the returned result and its matching successful read in Activity.
https://server.autom8.pro/mcp
OpenAI desktop MCP settings (opens in a new tab)
Manual setup for developers

Codex CLI is optional. Run these commands, complete browser authorization, then start a new session. Do not paste bearer tokens or static authorization headers.

Register the remote MCP server

codex mcp add apexgenius --url https://server.autom8.pro/mcp

Authorize in your browser

codex mcp login apexgenius

Inspect registered servers

codex mcp list

The desktop app, CLI, and IDE extension share MCP configuration on the same host. The IDE extension does not install plugins. ChatGPT web does not read local Codex configuration.

3. Verify one safe read

Show the name of the Notion user connected to ApexGenius. Discover the current-user read operation first, then use the read-only route. Do not open or change workspace content.

Show the name of the Notion user connected to ApexGenius. Discover the current-user read operation first, then use the read-only route. Do not open or change workspace content.

Confirm the returned user matches your intended Notion account. This account read verifies the connection path; it does not test every page, write action, or Notion plan feature.

Full guide: the Notion setup guide.

What it looks like in Codex

Illustration of a task, not a recorded customer result. Your answers come from the account and dates you choose.

How the route works
Codex
CodexApexGenius MCP route
Show the name of my connected Notion user without opening workspace content.
ApexGenius
Working with ApexGenius1 tool search · 2 reads
RequestCheck the account
Account scopeAuthorized connections checked
apex_search_toolsNotion account · Find the Notion read routeComplete
apex_call_read_toolnotion_search_tools · Discover the current-user operationComplete
apex_call_read_toolnotion_call_read_tool · Read the current userComplete
Codex

Illustrative example: the connected user is Alex. Compare this name with the Notion account you authorized before asking about a page.

Read-only route
Codex

Try asking

Show the name of my connected Notion user without opening workspace content.

Find the project page I name in my connected workspace and show its link.

Read this Notion page and summarize its open decisions. Do not change it.

Update this page. Show the exact change and undo limits first.

What Codex can do in Notion

3 operations: 2 read, 1 write. Read looks things up and changes nothing. Writes change Notion and run only when you turn them on.

Notion gateway tools

2 read · 1 write
  • notion_search_toolsread
  • notion_call_read_toolread
  • notion_call_toolwrite

You choose the access. When you approve Codex, pick Full access, Read only, or Custom.

Notion controls the OAuth grant and the content your user can access. Workspace access can be broad; ApexGenius does not promise a separate page-level allowlist.

The read route checks Notion’s live tool annotation and rejects writes or unclassified operations.

The mutation tool must be enabled. Available operations and plan limits come from the current Notion catalog.

Disconnecting stops future gateway access. It does not undo a page edit, comment, upload, or other completed action.

Start free

Questions about connecting Codex to Notion

Updated September 19, 2026.

How do I connect Codex to Notion?

Connect Codex to Notion through ApexGenius in three steps. Sign in to ApexGenius and connect Notion by authorizing your workspace in Notion. Add ApexGenius to Codex. Then open a task in Codex and ask a question about your Notion. Start with a read, so nothing changes.

Is there a Notion MCP server for Codex?

Yes. ApexGenius is an MCP server that Codex connects to once. It carries your Notion connection and 3 Notion operations, so Codex does not need a separate Notion integration or plugin. You set it up one time and add each agent the same way.

What can Codex do in Notion once it is connected?

Codex can use 3 Notion operations through ApexGenius: 2 that find what Notion offers and run a classified read, and 1 that runs a change you have enabled. Together they find accessible pages, read the sources you choose, and update pages, within your Notion access and plan.

Can Codex read all my Notion pages?

Codex reaches what your connected Notion user can access in the authorized workspace. That access can be broad, and ApexGenius does not promise a separate page-level allowlist. You enable the workspace resource and choose which tools Codex may use. Notion controls the sign-in grant.

Can Codex change my Notion?

Not until you enable the change tool. Choose Read only and Codex uses the read route, which rejects writes. With the tool enabled, it can update a page when the live Notion catalog and your access allow it. Check the exact page and the undo limits first.

Can I use the same Notion connection with Claude, ChatGPT, Grok Bot or Muse?

Yes. One Notion connection in ApexGenius works with every compatible agent you add, including Claude, ChatGPT, Grok Bot or Muse. Each agent gets its own access choice and its own short setup. The Notion skills loads in all of them, so it travels with the connection.

More connections like this one

Connect Notion to Codex today

Start free

1,000 free credits. No card required. Disconnect any time.