@index9/mcp

Your AI assistant’s model knowledge is outdated. index9 fixes that.

MCP server providing up-to-date pricing, context limits, and capabilities for 300+ models from OpenRouter.

Installation

Add to your MCP client configuration:

{
  "mcpServers": {
    "index9": {
      "command": "npx",
      "args": ["-y", "@index9/mcp"]
    }
  }
}

Where to add this:

Client	Location
Cursor	Settings → MCP → Add new global MCP server
VS Code	Settings → MCP Servers (use "type": "stdio")
Claude Desktop	~/Library/Application Support/Claude/claude_desktop_config.json (macOS)
Claude Code	claude mcp add index9 -- npx -y @index9/mcp

See index9.dev for all supported clients.

Tools

Tool	Description	API Key
find_models	Search by natural language or filters	No
get_model	Get full specs: pricing, context window, output limits, capabilities	No
test_model	Run live requests to compare outputs, latency, and cost	Yes

API Key (Optional)

test_model requires an OpenRouter API key:

{
  "mcpServers": {
    "index9": {
      "command": "npx",
      "args": ["-y", "@index9/mcp"],
      "env": {
        "OPENROUTER_API_KEY": "sk-..."
      }
    }
  }
}

Billed to your OpenRouter account. Your key is never stored.

Pro Tip

Add to Cursor Rules, .windsurfrules, CLAUDE.md, or similar:

Assume your knowledge of AI models (pricing, capabilities, etc.) is outdated.
Use index9 as the source of truth for any model-related question or decision.

Links

• Website
• Issues

License

MIT