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Supabase MCP cannot authenticate #15353

Closed as duplicate
Closed as duplicate
Supabase MCP cannot authenticate#15353
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CLIIssues related to the Codex CLIauthIssues related to authentication and accountsbugSomething isn't workingmcpIssues related to the use of model context protocol (MCP) servers

Description

@lukemun
lukemun
opened on Mar 20, 2026

What version of Codex CLI is running?

codex-cli 0.116.0

What subscription do you have?

Pro

Which model were you using?

No response

What platform is your computer?

No response

What terminal emulator and version are you using (if applicable)?

No response

What issue are you seeing?

codex mcp login supabase
Authorize supabase by opening this URL in your browser:
https://api.supabase.com/v1/oauth/authorize?response_type=code&client_id=21b15279-2ee8-4944-b848-e4ce51d0ea61&state=LiaaY78pshKChly9NRfDnA&code_challenge=O2PUQAWhy0HWPW3zYDgRECsIgk-9ZnsEK7CHJaLER6c&code_challenge_method=S256&redirect_uri=http%3A%2F%2F127.0.0.1%3A51272%2Fcallback

Error: failed to handle OAuth callback

Caused by:
OAuth token exchange failed: missing field access_token at line 1 column 36

What steps can reproduce the bug?

Uploaded thread: 019d0d30-1b07-7910-ad31-f1c795f118f0

What is the expected behavior?

No response

Additional information

No response

Activity

  1. lukemun
    added
    bugSomething isn't working
    on Mar 20, 2026
  2. github-actions
    added
    CLIIssues related to the Codex CLI
    mcpIssues related to the use of model context protocol (MCP) servers
    authIssues related to authentication and accounts
    on Mar 20, 2026

  3. github-actions commented on Mar 20, 2026

    @github-actions
    github-actionsBot
    on Mar 20, 2026 – with GitHub Actions
    Contributor

    Potential duplicates detected. Please review them and close your issue if it is a duplicate.

    Powered by Codex Action

  4. etraut-openai commented on Mar 20, 2026

    @etraut-openai
    etraut-openai
    on Mar 20, 2026
    Contributor

    I think this is a duplicate of #13852

  5. etraut-openai
    closed this as a duplicateof Supabase MCP repeatedly requires reauthentication: OAuth token refresh failed during initialize #13852 on Mar 20, 2026
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