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Claude Code cannot be applied in VS Code

Quick fix

Remove old Claude Code proxy settings in VS Code, then toggle Apply to Claude Code plugin in cc-switch again.

Symptom

Section titled “Symptom”
Error output
无法应用于claude code for VS Code
English translation

Cannot be applied to claude code for VS Code

Cause

Section titled “Cause”

When using the Claude Code plugin in VS Code, leftover proxy or relay settings for other models, such as Zhipu GLM, in VS Code settings.json can override the cc-switch proxy settings and prevent the plugin from using the cc-switch reverse proxy. Some users also see upstream_error when using Antigravity Manager, usually because cc-switch still contains a specified model field or Antigravity itself is misconfigured.

Fix

Section titled “Fix”

  1. Remove the old proxy settings for claude code for vscode in VS Code, or uninstall and reinstall the plugin.

  2. In cc-switch, turn off Apply to claude code plugin, then turn it on again to refresh the configuration.

  3. Check or create the Claude configuration file and ensure primaryApiKey is set correctly.

    // C:\Users\你的用户名\.claude\config.json
    {
      "primaryApiKey": "crs"
    }

  4. If requests return upstream_error, remove the specified model field from the cc-switch configuration and check the Antigravity Manager configuration.

Affected Versions

Section titled “Affected Versions”
ToolClaude Code
VersionUnknown
PlatformsWindows

Source Issues

Section titled “Source Issues”

This page is distilled from 1 real issues

FAQ

Section titled “FAQ”
Why does it work in Windows Terminal but not in VS Code?
Windows Terminal reads the cc-switch proxy settings directly, while the VS Code plugin may read old proxy settings left in its own settings.json, such as a Zhipu GLM relay setting, causing cc-switch to be ignored.
What should I do if upstream_error keeps occurring after configuring Antigravity Manager?
Try removing the specified model field from the cc-switch configuration. If the problem remains, check the Antigravity Manager configuration. You can first configure gemini-cli to test whether the link works.
Section titled “Related problems”
settings.json Full Overwrite Causes Plugin FailureUpgrade to v3.20.1+ to fix the bug that clears enabledPlugins when switching configs.9 issues mergedcc-switch DeepSeek usage statistics inaccurate / balance query failsUpgrade to v3.19.2 and rebuild Codex usage. The balance query needs a correct {{apiKey}}, or a proxy.17 issues merged[proxy::response_processor] [Claude] stream errorA stream decode error or timeout proxying Claude Code loses logs or records 0 tokens. Fix the model extraction fallback to show the right model.2 issues merged

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