llm-router hooks into your coding tool's own lifecycle, reads each prompt before the model does, and drafts an answer on a free or local model first. No API keys needed on a Claude subscription — routing runs through…
Llm Router source profile. From the maintainer documentation: “llm-router hooks into your coding tool's own lifecycle, reads each prompt before the model does, and drafts an answer on a free or local model first. No API keys needed on a Claude subscription — routing runs through MCP tools and local models.”
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{
"mcpServers": {
"llm-router": {
"command": "uvx",
"args": ["llm-routing"],
"env": {
"OPENAI_API_KEY": "your-value",
"GEMINI_API_KEY": "your-value",
"OLLAMA_BASE_URL": "your-value",
"OPENROUTER_API_KEY": "your-value",
"LLM_ROUTER_POLICY": "your-value",
"LLM_ROUTER_ENFORCE": "your-value",
"LLM_ROUTER_PROFILE": "your-value",
"LLM_ROUTER_BANDIT": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
| Variable | Description | Required |
|---|---|---|
| OPENAI_API_KEY | Credential the server authenticates with. | Yes |
| GEMINI_API_KEY | Credential the server authenticates with. | Yes |
| OLLAMA_BASE_URL | Endpoint or connection string the server talks to. | Yes |
| OPENROUTER_API_KEY | Credential the server authenticates with. | Yes |
| LLM_ROUTER_POLICY | Configuration value read at startup. | Optional |
| LLM_ROUTER_ENFORCE | Configuration value read at startup. | Optional |
| LLM_ROUTER_PROFILE | Configuration value read at startup. | Optional |
| LLM_ROUTER_BANDIT | Configuration value read at startup. | Optional |
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