How do I install ZeroWidth Caliper?

Copy the http config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.

Does ZeroWidth Caliper need an API key?

No required environment variable is listed on this record.

What transport does ZeroWidth Caliper use?

ZeroWidth Caliper is reached over HTTP.

ZeroWidth Caliper

by ai.zerowidth

Build datasets and rubrics, then run evals that score your AI in Caliper.

Power your agent

Add this server

The publisher's own URL. Not a PlugMCP endpoint.

Server URL

https://api.zerowidth.ai/mcp/x/caliper

Provider

Add in Claude

Claude opens with the name and URL filled in. You still confirm it there.

Claude Code

claude mcp add --transport http ai.zerowidth-caliper https://api.zerowidth.ai/mcp/x/caliper

Run in a terminal.

Claude Desktop

{
  "mcpServers": {
    "ai.zerowidth-caliper": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://api.zerowidth.ai/mcp/x/caliper"
      ]
    }
  }
}

claude_desktop_config.json

Step-by-step: add this in Claude

Remote URL or a command on your machine? How the two installs differ

Run on PlugMCP

Host a copy with our keys and logs.

A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.

Launch

Related MCP

Related skills

View all

Questions

How do I install ZeroWidth Caliper?: Copy the http config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.
Does ZeroWidth Caliper need an API key?: No required environment variable is listed on this record.
What transport does ZeroWidth Caliper use?: ZeroWidth Caliper is reached over HTTP.
When was ZeroWidth Caliper last checked?: Last checked 2026-10-16. Build datasets and rubrics, then run evals that score your AI in Caliper.

README is not crawled yet. No repository on file.