Fix DeepSeek Tool Call Conflicts

Fix DeepSeek Tool Call Conflicts | Generated by AI

Home 2025.08

You’re hitting a tool-call validation error. DeepSeek (OpenAI-style) is being used in a Claude Code flow that expects Anthropic-style tool messages. Two safe fixes:

Route all Claude Code work to Anthropic (via the proxy).
When you do use DeepSeek, turn tools off (so it only returns plain text) and suppress reasoning streams.

Here’s an updated single-file config that does both. Paste it as-is:

{
  "PROXY_URL": "http://127.0.0.1:7890",
  "LOG": true,
  "Providers": [
    {
      "name": "openrouter",
      "api_base_url": "https://openrouter.ai/api/v1/chat/completions",
      "api_key": "",
      "models": [
        "moonshotai/kimi-k2",
        "anthropic/claude-sonnet-4",
        "anthropic/claude-3.5-sonnet",
        "anthropic/claude-3.7-sonnet:thinking",
        "anthropic/claude-opus-4",
        "google/gemini-2.5-flash",
        "google/gemini-2.5-pro",
        "deepseek/deepseek-chat-v3-0324",
        "deepseek/deepseek-chat-v3.1",
        "deepseek/deepseek-r1",
        "mistralai/mistral-medium-3.1",
        "qwen/qwen3-coder",
        "openai/gpt-oss-120b",
        "openai/gpt-5",
        "openai/gpt-5-mini",
        "x-ai/grok-3-mini"
      ],
      "transformer": {
        "use": ["openrouter"]
      },
      "params": {
        "deepseek/deepseek-chat-v3.1": {
          "tool_choice": "none",
          "reasoning": { "exclude": true }
        },
        "deepseek/deepseek-r1": {
          "tool_choice": "none",
          "reasoning": { "exclude": true }
        }
      }
    },
    {
      "name": "anthropic-proxy",
      "api_base_url": "http://127.0.0.1:3000/v1/messages",
      "api_key": "",
      "models": [
        "anthropic/claude-sonnet-4",
        "anthropic/claude-3.5-sonnet",
        "anthropic/claude-3.7-sonnet:thinking",
        "anthropic/claude-opus-4"
      ]
    }
  ],
  "Router": {
    "default": "anthropic-proxy,anthropic/claude-sonnet-4",
    "background": "anthropic-proxy,anthropic/claude-sonnet-4",
    "think": "anthropic-proxy,anthropic/claude-sonnet-4",
    "longContext": "openrouter,moonshotai/kimi-k2",
    "longContextThreshold": 2000,
    "webSearch": "openrouter,mistralai/mistral-medium-3.1",
    "overrides": {
      "deepseek/deepseek-chat-v3.1": "openrouter,deepseek/deepseek-chat-v3.1",
      "deepseek/deepseek-r1": "openrouter,deepseek/deepseek-r1",
      "google/gemini-2.5-flash": "openrouter,google/gemini-2.5-flash",
      "google/gemini-2.5-pro": "openrouter,google/gemini-2.5-pro",
      "qwen/qwen3-coder": "openrouter,qwen/qwen3-coder",
      "openai/gpt-5-mini": "openrouter,openai/gpt-5-mini"
    }
  }
}

What this does:

Claude Code paths (default/background/think) go to Anthropic via anthropic-proxy, so tool use works.
DeepSeek stays available, but with "tool_choice":"none" and "reasoning.exclude": true, so it won’t emit tool calls or thinking chunks that break your IDE agent.
You can still pick DeepSeek explicitly (e.g., for plain chat or drafting), and it’ll route through OpenRouter cleanly.

If you still see “Invalid tool parameters,” it means some layer is still letting DeepSeek emit a tool call. In that case, make sure your runner actually respects per-model params. If it doesn’t, set your DeepSeek usage only in contexts where tools are disabled, or switch default back to openai/gpt-5-mini and reserve DeepSeek for a manual “no-tools” profile.

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