How do I install Locus?

Locus is a local plugin. Install it using npm package: @locus-dev/mcp-server and add the generated configuration snippet to your AI app's MCP config file. Then restart your AI app.

What credentials does Locus need?

Locus requires the following credentials or environment variables: PROTOTYPER_API_KEY, PROTOTYPER_PROJECT_ID, LOCUS_STORIES_PATH. You can find setup instructions on the server detail page.

What AI apps work with Locus?

Locus uses the Model Context Protocol (MCP) and works with any MCP-compatible AI app, including Claude, ChatGPT / Codex, Gemini, Copilot, Cursor, and more.

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Locus MCP Server

by Jonybur

Developer ToolsLow Risk9.7MCP RegistryLocal

Free

Server data from the Official MCP Registry

stories.yaml — an open specification for software requirements, enforced by CI.

About

stories.yaml — an open specification for software requirements, enforced by CI.

Security Report

9.7

Low Risk9.7Low Risk

Valid MCP server (2 strong, 4 medium validity signals). No known CVEs in dependencies. ⚠️ Package registry links to a different repository than scanned source. Imported from the Official MCP Registry. 1 finding(s) downgraded by scanner intelligence.

13 files analyzed · 1 issue found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

file_system

Check that this permission is expected for this type of plugin.

What You'll Need

Set these up before or after installing:

Optional: Locus API key for cloud team sync. Prefix ptmcp_. Not required for local stories.yaml mode.Required

Environment variable: PROTOTYPER_API_KEY

Optional: Locus project UUID for cloud team sync.Optional

Environment variable: PROTOTYPER_PROJECT_ID

Optional: Explicit path to stories.yaml. Defaults to auto-discovery from project root.Optional

Environment variable: LOCUS_STORIES_PATH

How to Install

Add this to your MCP configuration file:

{
  "mcpServers": {
    "io-github-jonybur-mcp-server": {
      "env": {
        "LOCUS_STORIES_PATH": "your-locus-stories-path-here",
        "PROTOTYPER_API_KEY": "your-prototyper-api-key-here",
        "PROTOTYPER_PROJECT_ID": "your-prototyper-project-id-here"
      },
      "args": [
        "-y",
        "@locus-dev/mcp-server"
      ],
      "command": "npx"
    }
  }
}

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Locus MCP Server

About

Security Report

Findings (1)

Permissions Required

What You'll Need

How to Install

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