How do I install three.ws Brain?

Pick a client above and copy the generated config. Cursor and VS Code also have a deep link when the server can run locally or remotely.

Is three.ws Brain official?

No. Registry-listed is not the same as vendor-official. Read the methodology for the difference.

How is the trust score calculated?

This listing scores 55 (Fair). The formula is published on the methodology page.

MCPpedia

three.ws Brain MCP Server | MCPpedia

three.ws Brain MCP Server

Name: three.ws Brain MCP Server
Author: nirholas

List LLM providers and run chat completions through the three.ws multi-provider router.

Tools Versions Alternatives

Registrynirholas

55Fair

Install

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "nirholas-brain-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@three-ws/brain-mcp@0.1.4"
      ],
      "env": {
        "THREE_WS_BASE": "https://three.ws",
        "THREE_WS_API_KEY": "YOUR_THREE_WS_API_KEY",
        "THREE_WS_TIMEOUT_MS": "120000"
      }
    }
  }
}

Install guide

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Environment

Name	Required	Notes
THREE_WS_BASE	No	Base URL of the three.ws API that fronts the LLM router (/api/brain/chat). Override only when self-hosting or targeting a preview deployment.
THREE_WS_API_KEY	No	Optional three.ws API key (sk_live_… / sk_test_…) or OAuth access token, sent as a Bearer token. Required only to use paid first-party flagships (Claude, GPT-5, o3, Grok, Qwen Plus, DeepSeek). Free open-weight tiers (GPT-OSS 120B, NVIDIA NIM models) work with no key. Create one at https://three.ws/dashboard/developers. Secret.
THREE_WS_TIMEOUT_MS	No	Per-request timeout in milliseconds. Chat completions stream server-side and are collapsed into a single reply, so this is generous by default to ride out a long flagship answer.

three.ws Brain MCP Server

Install

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