Notion MCP Re-Authentication Error — Permanent Fix

You're here because Notion keeps disconnecting from Claude. Here's why it happens and how to stop it permanently.

Error: Please re-authorize Notion. Your access has expired.
Error: Notion MCP connection lost. Token no longer valid.
Error: Failed to query Notion database - authentication required.

// What's causing this error

Notion uses OAuth tokens that expire on a fixed schedule. When the token expires, your MCP connection drops and Claude asks you to re-authorize. You sign in again, it works for a while, then the same error returns. There is no API key fallback for Notion — OAuth is the only authentication method, so the expiration cycle is unavoidable.

No amount of re-authorizing will fix this permanently. Without a proxy that handles token refresh on your behalf, you are stuck in the loop every time the token lifetime runs out.

// The permanent fix

Bindify sits between Claude and Notion and handles token lifecycle automatically. Here is how it works:

  1. Connect once. You authorize Notion through Bindify's OAuth flow. Bindify stores and encrypts your token.
  2. Automatic refresh. Before your Notion token expires, Bindify refreshes it proactively. Claude never sees an expiration.
  3. Permanent URL. Claude connects to a stable Bindify endpoint that never changes, so your MCP configuration stays the same even as tokens rotate behind the scenes.
bindify connect notion
Connected. Token refresh handled automatically.
Your permanent MCP URL: https://api.bindify.dev/s/{secret}/sse
Fix it now — free trial

// Why this keeps happening

MCP clients like Claude do not implement OAuth token refresh flows. When a connected service returns a 401 or token-expired response, the client has no mechanism to silently obtain a new token — it can only prompt you to re-authorize from scratch.

Services like GitHub and Linear offer personal API keys as an alternative, which never expire. Notion does not. Notion requires OAuth, and OAuth tokens have a limited lifetime. That combination — a client that cannot refresh and a service that requires refreshable tokens — is what creates the re-auth loop.

For a deeper look at why this affects every MCP integration that uses OAuth, see The MCP Re-Auth Problem Explained.

// Set up takes 2 minutes

The full walkthrough for connecting Notion through Bindify is in the Notion setup guide. You will have a working, permanent connection before your coffee gets cold.