claude-code - 💡(How to fix) Fix [Bug] Model context window stuck at 200k regardless of effort level configuration

[{"error":"AxiosError: Request failed with status code 400\n at CU (/$bunfs/root/src/entrypoints/cli.js:110:1194)\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:115:12744)\n at emit (node:events:92:22)\n at endReadableNT (internal:streams/readable:865:50)\n at processTicksAndRejections (native:7:39)\n at request (/$bunfs/root/src/entrypoints/cli.js:117:2467)\n at async MlH (/$bunfs/root/src/entrypoints/cli.js:253:275865)\n at async xE6 (/$bunfs/root/src/entrypoints/cli.js:406:3883)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-19T16:56:36.426Z"},{"error":"AxiosError: Request failed with status code 400\n at CU (/$bunfs/root/src/entrypoints/cli.js:110:1194)\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:115:12744)\n at emit (node:events:92:22)\n at endReadableNT (internal:streams/readable:865:50)\n at processTicksAndRejections (native:7:39)\n at request (/$bunfs/root/src/entrypoints/cli.js:117:2467)\n at async MlH (/$bunfs/root/src/entrypoints/cli.js:253:275865)\n at async xE6 (/$bunfs/root/src/entrypoints/cli.js:406:3883)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-19T17:10:22.887Z"},{"error":"AxiosError: Request failed with status code 400\n at CU (/$bunfs/root/src/entrypoints/cli.js:110:1194)\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:115:12744)\n at emit (node:events:92:22)\n at endReadableNT (internal:streams/readable:865:50)\n at processTicksAndRejections (native:7:39)\n at request (/$bunfs/root/src/entrypoints/cli.js:117:2467)\n at async MlH (/$bunfs/root/src/entrypoints/cli.js:253:275865)\n at async xE6 (/$bunfs/root/src/entrypoints/cli.js:406:3883)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-19T17:10:35.644Z"},{"error":"Error: Failed to delete keychain entry: security: SecKeychainSearchCopyNext: The specified item could not be found in the keychain.\n at Jwq (/$bunfs/root/src/entrypoints/cli.js:253:283620)\n at async Apq (/$bunfs/root/src/entrypoints/cli.js:406:898)\n at async iE6 (/$bunfs/root/src/entrypoints/cli.js:406:796)\n at async hq_ (/$bunfs/root/src/entrypoints/cli.js:2727:2084)\n at async ZDH (/$bunfs/root/src/entrypoints/cli.js:2752:5698)\n at async <anonymous> (/$bunfs/root/src/entrypoints/cli.js:2776:3358)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-19T19:00:18.887Z"}]

TL;DR

The issue might be resolved by checking and updating the configuration settings for the claude CLI in the ghostty environment, specifically focusing on the effort levels and context settings.

Guidance

• Review the configuration settings for the claude CLI to ensure that the effort levels and context are correctly set and not stuck on "high" for all levels.
• Verify that the version of claude being used (3.7) is compatible with the ghostty environment and the tumx session.
• Check the keychain entries for any issues, as one of the error messages indicates a problem with deleting a keychain entry.
• Consider resetting or reinstalling the claude CLI to ensure a clean configuration and to rule out any corruption issues.

Example

No specific code snippet can be provided without more context, but checking the configuration settings might involve running a command like claude config or claude --version to verify the settings and version.

Notes

The provided error messages suggest issues with the Axios requests and keychain management, which might be related to the configuration or version of the claude CLI. However, without more specific information about the ghostty environment and the tumx session, it's difficult to provide a more targeted solution.

Recommendation

Apply a workaround by checking and updating the configuration settings for the claude CLI, as this seems to be the most likely cause of the issue. If the problem persists, consider seeking further assistance or reporting the issue to the developers of the claude CLI.