Anthropic MCP Server

Official Anthropic MCP server providing direct access to Claude models through the Model Context Protocol. Enables AI agents to invoke Claude for sub-tasks like summarization, analysis, and code generation within agentic workflows. Supports streaming responses, system prompts, and multi-turn conversations.

{
  "mcpServers": {
    "anthropic": {
      "command": "npx",
      "args": [
        "-y",
        "@anthropics/mcp-server"
      ],
      "env": {
        "ANTHROPIC_API_KEY": "<YOUR_ANTHROPIC_API_KEY>"
      }
    }
  }
}

{
  "type": "object",
  "required": [
    "model",
    "messages",
    "max_tokens"
  ],
  "properties": {
    "model": {
      "type": "string",
      "description": "Model ID (e.g., claude-sonnet-4-5-20250514)"
    },
    "system": {
      "type": "string",
      "description": "System prompt"
    },
    "messages": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "role": {
            "type": "string"
          },
          "content": {
            "type": "string"
          }
        }
      },
      "description": "Conversation messages"
    },
    "max_tokens": {
      "type": "integer",
      "description": "Maximum tokens in response"
    }
  }
}

{
  "type": "object",
  "required": [
    "model",
    "messages"
  ],
  "properties": {
    "model": {
      "type": "string",
      "description": "Model ID for tokenization"
    },
    "messages": {
      "type": "array",
      "items": {
        "type": "object"
      },
      "description": "Messages to count tokens for"
    }
  }
}