Is CircleCI safe to install?

A server's blast radius is the most powerful thing each of its tools can do. This grades the tools it declares, read-only, not whether it is secure.

• mediumTool declares a high-privilege capability

Keyword matches in tool descriptions and schemas. These are shown for transparency and are not part of the grade.

• highShell/command injection×7
• highCode-execution capability×2
• mediumWildcard scope / permission×8

Drop this into your MCP client config (Claude Desktop, Cursor, and others).

{
  "mcpServers": {
    "circleci": {
      "command": "npx",
      "args": [
        "-y",
        "@circleci/mcp-server-circleci@latest"
      ]
    }
  }
}

The grade reflects the blast radius of what CircleCI declares it can do, read-only, not whether it is secure or trustworthy, and not a judgment of the vendor. Maintain this server? Claim this listing or request a re-scan. See the methodology.