Cactus is an MCP (Model Context Protocol) server by pipeworx-io in the Developer Tools category. NCI CACTUS Chemical Identifier Resolver MCP.

How do I connect Cactus to Claude, Cursor, or another MCP client?

Cactus is a remote MCP server — add its endpoint (https://gateway.pipeworx.io/cactus/mcp) to your client's MCP configuration (for example with "claude mcp add", or under "mcpServers" in Cursor's mcp.json) and restart the client.

Is Cactus open source?

Yes — the source code is public at github.com/pipeworx-io/mcp-cactus.

Can AI agents pay to use Cactus?

Not yet through Loomal — Cactus is listed as a free directory entry. If its maintainer verifies ownership, they can set per-call USDC pricing that agents pay over x402, with settlement on Base.

Cactus

MCP server by github.com/pipeworx-io/mcp-cactus

NCI CACTUS Chemical Identifier Resolver MCP.

0 starsRemote-capable

About Cactus

Cactus is an MCP (Model Context Protocol) server published by pipeworx-io in the official MCP registry, listed under Developer Tools on Loomal. NCI CACTUS Chemical Identifier Resolver MCP.

Cactus runs as a hosted remote over streamable-http — MCP clients connect directly to its endpoint, with nothing to install locally.

Development happens in the open at github.com/pipeworx-io/mcp-cactus.

Use Cactus with your agent

Claude Code · one command

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

Claude Desktop, Cursor & other MCP clients · config

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

streamable-httphttps://gateway.pipeworx.io/cactus/mcp

Frequently asked questions

What is Cactus?: Cactus is an MCP (Model Context Protocol) server by pipeworx-io in the Developer Tools category. NCI CACTUS Chemical Identifier Resolver MCP.
How do I connect Cactus to Claude, Cursor, or another MCP client?: Cactus is a remote MCP server — add its endpoint (https://gateway.pipeworx.io/cactus/mcp) to your client's MCP configuration (for example with "claude mcp add", or under "mcpServers" in Cursor's mcp.json) and restart the client.
Is Cactus open source?: Yes — the source code is public at github.com/pipeworx-io/mcp-cactus.
Can AI agents pay to use Cactus?: Not yet through Loomal — Cactus is listed as a free directory entry. If its maintainer verifies ownership, they can set per-call USDC pricing that agents pay over x402, with settlement on Base.

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Listing data from the official MCP registry and GitHub, refreshed periodically. Not affiliated with the maintainer unless claimed. Maintain Cactus? Claim this listing free by verifying GitHub ownership, or contact us.