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Preflight

Preflight is an MCP server that adds developer tools to AI assistants such as Claude Desktop, Claude Code and Cursor. New Relic MCP server for observing AI coding assistants (Claude Code, Cursor, Copilot, etc.). It has 51 GitHub stars, is released under the Apache-2.0 license and runs locally with npx -y @newrelic/preflight.

github.com/newrelic-experimental/preflight (opens in a new tab)

View on GitHub (opens in a new tab)

Install Preflight

Generated from the server's MCP registry entry. Replace your-value with your own values.

Claude Desktop

claude_desktop_config.json
{
  "mcpServers": {
    "preflight": {
      "command": "npx",
      "args": [
        "-y",
        "@newrelic/preflight"
      ],
      "env": {
        "NEW_RELIC_LICENSE_KEY": "your-value"
      }
    }
  }
}

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

Claude Code

claude mcp add --env NEW_RELIC_LICENSE_KEY=your-value --transport stdio preflight -- npx -y @newrelic/preflight

Cursor

.cursor/mcp.json
{
  "mcpServers": {
    "preflight": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@newrelic/preflight"
      ],
      "env": {
        "NEW_RELIC_LICENSE_KEY": "your-value"
      }
    }
  }
}

Project file; use ~/.cursor/mcp.json to enable it in every project.

VS Code

.vscode/mcp.json
{
  "inputs": [
    {
      "type": "promptString",
      "id": "new_relic_license_key",
      "description": "NEW_RELIC_LICENSE_KEY",
      "password": true
    }
  ],
  "servers": {
    "preflight": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@newrelic/preflight"
      ],
      "env": {
        "NEW_RELIC_LICENSE_KEY": "${input:new_relic_license_key}"
      }
    }
  }
}

Config formats checked against the official docs on Oct 7, 2026: modelcontextprotocol.io (opens in a new tab), code.claude.com (opens in a new tab), cursor.com (opens in a new tab), code.visualstudio.com (opens in a new tab).

Environment variables

Variables the server reads at startup.

NameRequiredDescription
NEW_RELIC_LICENSE_KEYsecretNoNew Relic ingest license key. Optional: without it Preflight runs local-only with the dashboard at localhost:7777.
NEW_RELIC_ACCOUNT_IDNoNew Relic account id, used for dashboard and alert deployment. Optional.

About Preflight

Preflight Observability for AI Coding Assistants Your AI coding assistant makes hundreds of decisions every session — what to read, what to edit, when to run commands. But you can't see any of it. You know it was fast, but was it efficient? You got a PR merged, but how much did it cost? You fixed a bug, but did it get stuck in a loop first?

  • ai-agents
  • claude
  • claude-code
  • cost-tracking
  • cursor
  • developer-tools
  • github-copilot
  • llm
  • mcp
  • mcp-server

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FAQ

Preflight FAQ

Still curious? Email info@appsgit.com.

What is Preflight?

Preflight is an MCP server that adds developer tools to AI assistants such as Claude Desktop, Claude Code and Cursor. New Relic MCP server for observing AI coding assistants (Claude Code, Cursor, Copilot, etc.). It has 51 GitHub stars, is released under the Apache-2.0 license and runs locally with npx -y @newrelic/preflight. The source code is at github.com/newrelic-experimental/preflight.

How do I install the Preflight MCP server?

Add the command npx -y @newrelic/preflight to your MCP client: put it in claude_desktop_config.json for Claude Desktop, run claude mcp add for Claude Code, or add it to .cursor/mcp.json (Cursor) or .vscode/mcp.json (VS Code). The snippets on this page are ready to paste.

Is Preflight free?

The server is open source under the Apache-2.0 license, so running it is free. It does not declare any required API key.

Is Preflight actively maintained?

The most recent commit was on Oct 7, 2026. The latest release is v1.59.0, published Oct 7, 2026. appsgit only lists MCP servers with a commit in the last six months and re-checks every server daily.