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Connect Notion to Codex

To use Notion in Codex, connect your Notion account in Manyplug and add Manyplug to Codex once. Codex then gets 6 Notion tools, for example: “Search”, “Read a page”, and “Query a database”. It takes about 4 minutes and works on the free plan.

Connect Notion Free plan, no card

1. Connect Notion in Manyplug

Click “Connect Notion” and paste the key or app password into Manyplug’s form:

An internal integration secret from Notion. Takes about two minutes.

  1. Open Notion integrations and click New integration.Open Notion integrations
  2. Name it Manyplug, pick your workspace, keep the type Internal and click Save.
  3. Copy the Internal Integration Secret (starts with ntn_) and paste it into the form.
  4. In Notion, open each page or database the AI should see, click ••• → Connections and add the integration.
  • The AI only sees pages shared with the integration, so start with the ones you need and add more any time.

2. Add Manyplug to Codex

Codex CLI and the IDE extension.

  1. Add the server to ~/.codex/config.toml.
    [mcp_servers.manyplug]
url = "https://manyplug.com/mcp"
  2. Run codex mcp login manyplug and sign in in the browser.

Full guide: Codex

3. Ask Codex

  • Find our onboarding checklist in Notion and summarise it.
  • Add a row to Content calendar: “Launch post”, status Draft, due Friday.
  • What changed on the Roadmap page this week?
  • Append today’s meeting notes to the “Team sync” page.

What Codex can do in Notion

Each action can be turned off per account, and changes can wait for your OK.

ActionAccess
Search
Finds pages and databases by title, recently edited first.
Reads
Read a page
Shows a page: its title, properties and content as Markdown.
Reads
Query a database
Rows of a database with their properties, optionally filtered and sorted.
Reads
Create a page
Creates a page under another page, or a row in a database, with Markdown content.
Makes changes
Update a page
Changes properties of a page or database row, or moves it to the trash.
Makes changes
Add to a page
Adds Markdown content to the end of a page.
Makes changes

Questions

Can I connect two Notion accounts to Codex?
Yes. Connect each one in Manyplug under its own name, for example Work and Personal. Codex can use one of them or all at once.
Will Codex change anything in Notion without asking?
Changes follow your rules: you can make every change in Notion wait for your approval, or let Codex only read.
Do I need an official Notion MCP server for this?
No. Manyplug connects to Notion itself with a key or app password you paste into its form, and gives Codex the tools through one MCP address, together with your other services.
Is it free to connect Codex to Manyplug?
Yes. New workspaces get 14 days of Pro free, then the free plan keeps going with 150 actions a month and up to 3 connected accounts. No card needed. Paid plans start at $5 a month.
Does Codex see my passwords or API keys?
No. Keys are entered on Manyplug’s own pages, stored encrypted with a separate key per account, and the AI only receives tool results.

Notion in other AI apps

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