Cactus MCP Server: Install & Setup

Install Cactus in Claude Code

Claude Code

claude mcp add --transport http cactus https://gateway.pipeworx.io/cactus/mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "cactus": {
      "url": "https://gateway.pipeworx.io/cactus/mcp"
    }
  }
}

Claude Code

claude mcp add cactus -- npx -y @pipeworx/mcp-cactus

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

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

NCI CACTUS Chemical Identifier Resolver MCP.

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Local + Remote. Can run locally or be used as a hosted remote server.

Run: claude mcp add --transport http cactus https://gateway.pipeworx.io/cactus/mcp

reactive-resume/reactive-resume

Free open-source resume builder with remote MCP tools for resumes and job applications.

HeyPuter/puter

Puter MCP enables AI tools to interact with Puter: manage files, websites, workers, and more

pascalorg/editor

Create, inspect, validate, and save editable 3D building scenes with Pascal's MCP server.

JanDeDobbeleer/oh-my-posh

Validate oh-my-posh configurations and segment snippets against the official schema.

instantdb/instant

Create, manage, and update applications on InstantDB, the modern Firebase.

nhost/nhost

Let your users work with their own data through an AI assistant, limited to what they can see.