Huly MCP

Huly MCP is a feature-complete MCP server for Huly integration. Published on npm as @firfi/huly-mcp.

It connects to any Huly Platform deployment, so it should also work with the Platform Collective fork and TraceX — unofficial for now.

[!IMPORTANT] Hosted Huly is shutting down. Huly's upstream README says shutdown is expected July 20. If you use https://huly.app, export and migrate your data as soon as possible. See the backup and restore guide and self-hosting repository. Self-hosted deployments are not affected.

Huly CLI Alternative

Looking for a Huly CLI, terminal-native Huly integration, or a scripting and automation alternative to running an MCP server? Huly CLI is a feature-complete command-line interface for Huly, published as @firfi/huly-cli, with full Huly operation parity with Huly MCP. It exposes the same Huly operations as native, schema-aware commands with human-readable or JSON output, file-backed inputs, uploads, and downloads.

Huly MCP and Huly CLI are maintained together in this monorepo and derive from the same shared operation registry, keeping operation inputs, outputs, warnings, and typed failures aligned. See the Huly CLI documentation for the complete generated command reference, or browse CLI examples, Huly automation patterns, and the Huly MCP vs CLI comparison.

Installation

Node.js requirement

Huly MCP requires Node.js 22.19.0 or later. MCP clients do not provide a Node.js runtime: node, npx, and the #!/usr/bin/env node package executable resolve Node.js from the environment in which the MCP client runs. Check that environment before installation:

node --version

If an MCP client starts Huly MCP with an older runtime, Huly MCP initializes a diagnostic-only MCP surface instead of loading the incompatible application. Its server instructions and get_huly_startup_diagnostic tool report the detected executable and required version, and the same unsupported Node.js runtime diagnostic is written to stderr. Upgrade Node.js or configure the MCP server command to use the absolute path of a compatible Node.js executable, then restart the MCP server. Huly operations remain unavailable until the runtime is upgraded.

The standard configuration works with most MCP clients:

{
  "mcpServers": {
    "huly": {
      "command": "npx",
      "args": ["-y", "@firfi/huly-mcp@latest"],
      "env": {
        "HULY_URL": "https://your-huly-instance.example.com",
        "HULY_EMAIL": "your@email.com",
        "HULY_PASSWORD": "yourpassword",
        "HULY_WORKSPACE": "yourworkspace"
      }
    }
  }
}

Tool Exposure Defaults

By default (HULY_TOOL_MODE=auto), Huly MCP optimizes for current MCP clients by avoiding a 470-tool eager list. Exact claude-code sessions receive native Huly tools. Codex, Cursor, Windsurf, Copilot, OpenCode, Claude AI/Desktop-style clients, and unknown clients receive a small proxy surface: list_tool_categories, search_tools, get_tool_schema, and invoke_tool.

Exact native tool names still dispatch when a client calls them directly, but many clients only call tools returned by tools/list. Set HULY_TOOL_MODE=native to make every Huly tool appear first-class, or use TOOLSETS / TOOLS to pin frequently used native tools while keeping proxy discovery available.

codex mcp add huly \
  --env HULY_URL=https://your-huly-instance.example.com \
  --env HULY_EMAIL=your@email.com \
  --env HULY_PASSWORD=yourpassword \
  --env HULY_WORKSPACE=yourworkspace \
  -- npx -y @firfi/huly-mcp@latest

[mcp_servers.huly]
command = "npx"
args = ["-y", "@firfi/huly-mcp@latest"]

[mcp_servers.huly.env]
HULY_URL = "https://your-huly-instance.example.com"
HULY_EMAIL = "your@email.com"
HULY_PASSWORD = "yourpassword"
HULY_WORKSPACE = "yourworkspace"

claude mcp add huly \
  -e HULY_URL=https://your-huly-instance.example.com \
  -e HULY_EMAIL=your@email.com \
  -e HULY_PASSWORD=yourpassword \
  -e HULY_WORKSPACE=yourworkspace \
  -- npx -y @firfi/huly-mcp@latest

{
  "servers": {
    "huly": {
      "command": "npx",
      "args": ["-y", "@firfi/huly-mcp@latest"],
      "env": {
        "HULY_URL": "https://your-huly-instance.example.com",
        "HULY_EMAIL": "your@email.com",
        "HULY_PASSWORD": "yourpassword",
        "HULY_WORKSPACE": "yourworkspace"
      }
    }
  }
}

{
  "mcp": {
    "huly": {
      "type": "local",
      "command": ["npx", "-y", "@firfi/huly-mcp@latest"],
      "environment": {
        "HULY_URL": "https://your-huly-instance.example.com",
        "HULY_EMAIL": "your@email.com",
        "HULY_PASSWORD": "yourpassword",
        "HULY_WORKSPACE": "yourworkspace"
      }
    }
  }
}

pi install npm:pi-mcp-adapter

Updating

The @latest tag asks the package runner for the newest version. Some MCP clients keep server processes or resolved installs alive, so restart or re-add the server when updating:

Maintainer Production Release

Publish from a clean, current master checkout with the preferred certified Node.js runtime:

mise exec node@24.15.0 -- pnpm local-release

Use this exact command even when a newer Node.js version is active on the host. The release build accepts only the exact Node.js versions certified by CI; this is intentionally narrower than the package's runtime requirement. See the production release guide for preflight checks, rerun behavior, and verification.

HTTP Transport

By default, the server uses stdio transport. For HTTP transport:

HULY_URL=https://your-huly-instance.example.com \
HULY_EMAIL=your@email.com \
HULY_PASSWORD=yourpassword \
HULY_WORKSPACE=yourworkspace \
MCP_TRANSPORT=http \
npx -y @firfi/huly-mcp@latest

Server listens on http://127.0.0.1:3000/mcp by default.

Configure with MCP_HTTP_PORT and MCP_HTTP_HOST:

MCP_TRANSPORT=http MCP_HTTP_PORT=8080 MCP_HTTP_HOST=0.0.0.0 npx -y @firfi/huly-mcp@latest

HTTP MCP Protocol Support