Skip to content
CC Switch WikiUnofficial Community Wiki

Unable to Call Tools Normally with Claude Code

Quick fix

Model responses vary on the NVIDIA channel; try deepseek-ai/deepseek-v4-flash, which was tested as stable, or switch providers.

Symptom

Section titled “Symptom”
Error output
他无法正常调用工具
English translation

They are unable to call tools normally

Cause

Section titled “Cause”

When Claude Code uses the NVIDIA channel through cc-switch, users have reported that tool calls fail or streaming responses behave abnormally. Tests described in maintainer comments showed inconsistent results across models on NVIDIA’s free channel: tool calls from deepseek-ai/deepseek-v4-flash and deepseek-ai/deepseek-v4-pro followed the OpenAI format; some GLM, Qwen, and Kimi models had timeouts, interrupted streams, or response format issues. Another user reported being unable to call tools with deepseek-ai/deepseek-v4-flash, so this recommendation is not guaranteed to work with every configuration. An issue on Linux asked about NVIDIA setup and the proxy toggle, but provided no fix steps, so it does not confirm the same underlying cause.

Fix

Section titled “Fix”

  1. If you use the NVIDIA channel, try selecting deepseek-ai/deepseek-v4-flash, which was tested to handle tool calls correctly; this recommendation is not guaranteed to work with every configuration.

  2. If the problem persists, try switching providers; a user in the issue comments reported that it worked after switching.

Affected Versions

Section titled “Affected Versions”
ToolClaude Code
Version3.14.1（cc-switch 版本；受影响范围未确认）
PlatformsmacOSLinux

Source Issues

Section titled “Source Issues”

This page is distilled from 2 real issues

FAQ

Section titled “FAQ”
Which NVIDIA models were tested to support tool calls?
Tests described in the issue comments showed that tool call responses from deepseek-ai/deepseek-v4-flash and deepseek-ai/deepseek-v4-pro followed the OpenAI format; this does not guarantee that your configuration will work correctly.
How do I configure the NVIDIA channel on Linux, and what can I do if the global proxy toggle cannot be clicked?
The available issue provides no setup steps or fix for the proxy toggle, so the cause cannot be confirmed from it.
Section titled “Related problems”
cc-switch Usage Statistics Differ from DeepSeek Official Site / Stop UpdatingUpgrade to v3.19.2 or later, then run “Rebuild Codex Usage” once on the “Usage Statistics” page to correct historical overcounts or missing records.22 issues mergedapi failed deserialize json body intoDepending on the error: roll Claude Code back, upgrade cc-switch, turn the local proxy off, or stop sending unsupported fields.8 issues merged400 MissingParameter: input.typeNo verified fix is available. The reporter's direct tests returned 200 with "type": "message", but the proxy patch remains a proposal.1 issues merged

This is an unofficial community wiki with no affiliation to the cc-switch authors or the project itself. Its content is compiled from the project's public GitHub issues. This site distributes no software.