Lockstep

Lockstep is a local MCP server: Decision memory for AI coding agents: captures decisions once, briefs every agent before it acts. Install it from npm as lockstep-cli.

Claude CodeCodexAntigravity

commandprompt

Terminal

claude mcp add lockstep -e LOCKSTEP_VENDOR=... -- npx -y lockstep-cli

Run in your project folder. Add --scope user to use it everywhere.

Add to claude_desktop_config.json or .cursor/mcp.json.

{
  "mcpServers": {
    "lockstep": {
      "command": "npx",
      "args": [
        "-y",
        "lockstep-cli"
      ],
      "env": {
        "LOCKSTEP_VENDOR": "..."
      }
    }
  }
}

Fill in the environment variables with your own credentials.

• Runtime: Node.js 18+ (runs with npx).
• MCP client: Claude Code, Codex, Antigravity, Claude Desktop, Cursor or any other client that speaks MCP over stdio.
• Environment variables: LOCKSTEP_VENDOR