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ModelScope reports 401 token invalid - Claude Code

Quick fix

Add ANTHROPIC_MODEL to the provider environment variables in cc-switch to resolve the 401. It is not synced to settings.json by design.

Symptom

Section titled “Symptom”
Error output
我用魔搭是报错 401 token 失效
English translation

ModelScope reports 401 token invalid

Cause

Section titled “Cause”

Claude Code uses the native Anthropic Messages protocol, while aggregation platforms such as ModelScope usually offer an OpenAI-compatible endpoint by default. Configuring a third-party model in cc-switch requires setting the ANTHROPIC_MODEL environment variable explicitly for requests to route correctly; without it, authentication fails or the protocols do not match.

Separately, cc-switch deliberately does not write ANTHROPIC_MODEL and other model variables into ~/.claude/settings.json in proxy mode, because the model a request actually reaches is converted dynamically by the middle layer, and hard-coding it locally would interfere with the proxy layer model mapping.

Fix

Section titled “Fix”

  1. Edit the relevant provider config in cc-switch and add an ANTHROPIC_MODEL field with the model name to the environment variables (env).

    // cc-switch Provider settings_config
    {
      "env": {
        "ANTHROPIC_MODEL": "ZhipuAI/GLM-4.5"
      }
    }

Affected Versions

Section titled “Affected Versions”
ToolClaude Code
Versionv1.x
PlatformsmacOS

Source Issues

Section titled “Source Issues”

This page is distilled from 2 real issues

FAQ

Section titled “FAQ”
Why is there no ANTHROPIC_MODEL in ~/.claude/settings.json after switching provider?
That is deliberate in cc-switch. In proxy mode the model mapping is controlled dynamically by the proxy layer, and writing model variables into the local settings.json would interfere with that dynamic substitution, so only the minimum needed to reach the proxy (BASE_URL and TOKEN) is kept.
The model name shown in the Claude Code UI (Sonnet 4.6) does not match what is actually used. What now?
A known limitation. Because cc-switch does not write model variables into the local config, the Claude Code interface cannot see the real model name — but that keeps the proxy logic and dynamic model mapping correct and does not affect use.
What if my provider only offers an OpenAI-compatible endpoint?
cc-switch currently only supports providers that natively speak the Anthropic/Claude protocol. If you must use an OpenAI-compatible endpoint, try an open-source project such as Claude Code Router for protocol conversion.
Section titled “Related problems”
Auth conflictLog out of the official Claude login, clear conflicting ANTHROPIC_* variables, set hasCompletedOnboarding to true in ~/.claude.json, and restart the terminal.6 issues mergedANTHROPIC_AUTH_TOKEN and ANTHROPIC_API_KEYOpen `~/.claude/settings.json`, delete the duplicate auth variable so only the one your provider needs remains, save, and restart Claude Code.4 issues mergedsettings.json Full Overwrite Causes Plugin FailureUpgrade to v3.20.1+ to fix the bug that clears enabledPlugins when switching configs.9 issues merged

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