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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.

Connect NotionSee the setup

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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

FirstConnect Notion to ApexGenius

ThenConnect ApexGenius to Codex

Notionapexgenius.ai/connections/notion1 of 3

Connect Notion. Open Notion in ApexGenius and choose Connect.

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.

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 actual Notion connection page in ApexGenius, showing the Connect control.
    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.

What Codex can do in Notion

3 operations. Read looks things up and changes nothing. Write changes Notion and runs only when that tool is enabled.

Read2 operations

Looks things up. Changes nothing.
  • notion_search_toolsSearch the live tool catalog published by Notion's official hosted MCP. Returns matching names, descriptions, and schemas.
  • notion_call_read_toolRun a discovered Notion operation only when its live catalog marks it read-only. Writes and unclassified operations are rejected.

Write1 operation

Changes Notion. Runs only when enabled.
  • notion_call_toolRun a reviewed Notion change when enabled, including destructive actions when the live tool permits them. Review the target and undo limits first.

You choose what Codex can use

When you approve Codex, pick Full access, Read only, or Custom. Read only allows the Read operations and nothing else. Custom picks apps and tools one by one.

Limits in Notion

  • · 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.

What it looks like in Codex

An illustrative read-only request and response. Your results 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.”

More connections like this one

One ApexGenius account covers every pair below. Connect an app once and each agent you allow can use it.

Questions people ask first

How do I connect Notion?

Open Notion in ApexGenius Connections, choose Connect, and authorize the intended workspace in Notion. No Notion API key is pasted into ApexGenius.

Which pages can my AI read?

Your connected Notion user’s permissions set the content boundary. Enable the intended workspace resource in ApexGenius and select the tools your AI agent can use. This does not create a page-level allowlist.

Can I start with read-only access?

Yes. Choose Read only for your AI agent and use the dedicated Notion read route. This limits gateway calls; it does not change Notion’s underlying OAuth grant.

Can my agent update a page?

When the live Notion catalog and your access permit it, the existing mutation route can request the change. The tool must be enabled. Review the exact page, proposed change, and undo limits first.

Are all Notion features included?

The tools available to your connected account depend on Notion’s live catalog, your permissions, and your plan. A successful account read does not certify every feature.

Connect Notion to Codex today

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