What this error means

Claude Code authenticates to Console instead of claude.ai Max subscription — OAuth URL always uses client_id=9d1c250a with platform.claude.com redirect is a Claude Code failure pattern reported for developers trying to fix claude code ignoring claude.ai max subscription and forcing console api billing. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.

Why this happens

Claude Code always authenticates via Console (API billing) instead of claude.ai Max subscription, even when using 'claude auth login --claudeai'. The OAuth URL always contains client_id=9d1c250a-e61b-44d9-88ed-5944d1962f5e and redirect_uri pointing to platform.claude.com, regardless of OS or installation method. Multiple duplicate issues filed.

Common causes

  • Claude Code offers two billing modes: claude.ai Max subscription (flat rate) and Console API (pay-per-use). Users paying for Max expect free access, but the OAuth flow always routes to Console billing, causing unexpected charges. This is a regression that worked in previous versions.
  • Claude Code always authenticates via Console (API billing) instead of claude.ai Max subscription, even when using 'claude auth login --claudeai'. The OAuth URL always contains client_id=9d1c250a-e61b-44d9-88ed-5944d1962f5e and redirect_uri pointing to platform.claude.com, regardless of OS or installation method. Multiple duplicate issues filed.

Quick fixes

  1. Confirm the exact error signature matches Claude Code authenticates to Console instead of claude.ai Max subscription — OAuth URL always uses client_id=9d1c250a with platform.claude.com redirect.
  2. Check the Claude Code account, local tool state, and provider configuration involved in the failing workflow.
  3. Verify the account session, API key, provider settings, and environment where the failing tool is running.

Platform/tool-specific checks

  • Verify the command, editor, extension, or API client that produced the error.
  • Compare local settings with CI, deployment, or editor-level settings when the error appears in only one environment.
  • Avoid deleting credentials, local model data, or project settings until the failing scope is clear.

Step-by-step troubleshooting

  1. Capture the exact error message and the command, editor action, or request that triggered it.
  2. Check whether the failure is account/auth, quota/rate, model/provider, local runtime, or deployment configuration.
  3. Review the source evidence below and compare it with your environment.
  4. Apply one change at a time and rerun the smallest failing action.
  5. Keep the working fix documented for the team or deployment environment.

How to prevent it

  • Keep provider/tool configuration documented.
  • Record non-secret diagnostics such as tool version, provider name, model name, and command path.
  • Add a lightweight check before CI or production workflows depend on the tool.