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No endpoints available that support Anthropic - Claude Code

Quick fix

Upgrade Claude Code to v2.1.92+ and update cc-switch to fix OpenRouter parameter errors, or disable the local proxy.

Symptom

Section titled “Symptom”
Error output
API Error: 400 {"error":{"message":"No endpoints available that support Anthropic's context management features (context-management-2025-06-27). Context management requires a supported provider (Anthropic).","code":400}}

Cause

Section titled “Cause”

When running Claude Code with cc-switch 3.12.3 and OpenRouter (e.g., qwen/qwen3.6-plus:free), a 400 error is triggered because cc-switch passes unsupported parameters to OpenRouter. Additionally, older versions of Claude Code (e.g., v2.1.81) have compatibility issues with specific OpenRouter models, and local proxy settings may also interfere.

Fix

Section titled “Fix”

  1. Upgrade Claude Code to v2.1.92 or higher, which fixes compatibility issues with some OpenRouter models.

  2. Update cc-switch to the latest version; the official release fixed the bug where extra parameters were passed to OpenRouter (see issue #1898).

  3. Try disabling the "local proxy" feature in cc-switch settings to rule out request anomalies caused by the proxy environment.

  4. If the issue persists, temporarily switch to another model provider for testing.

Affected Versions

Section titled “Affected Versions”
ToolClaude Code
Version< v2.1.92 (配合 cc-switch 3.12.3)
PlatformsWindowsmacOS

Source Issues

Section titled “Source Issues”

This page is distilled from 2 real issues

FAQ

Section titled “FAQ”
Why does Claude Code work in the terminal but report this error in the VSCode extension?
This may be because the VSCode extension inherits different environment variables or is affected by the cc-switch local proxy. Try disabling the "local proxy" in cc-switch and ensure the extension uses Claude Code version v2.1.92 or above.
Is this error related to the specific model used?
Yes. Users reported this issue when using the OpenRouter qwen/qwen3.6-plus:free model; switching to other providers resolved it. Upgrading Claude Code and cc-switch usually resolves this compatibility issue.
Section titled “Related problems”
thinking enabled but reasoning_content missingDisable Thinking mode in Claude Code, or upgrade cc-switch to fix Kimi/Moonshot tool call errors.2 issues mergedccstatusline shows the wrong model name - Claude CodeConfigure a Custom Command script in ccstatusline that reads the environment variables from the cc-switch database to show the real model.2 issues mergedBash(...) Waiting... Claude CodeDowngrade Claude Code to v2.1.104 or v2.0.64 (admin required), or switch to a compatible provider such as Alibaba Cloud Bailian.1 issues merged

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