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Lomberk

io.github.ege-usta/lomberk · v0.2.0

Postgres gateway for AI agents: blocks destructive SQL, holds risky writes, undoes applied ones.

Website Source code Set it up

Connect Runs on your machine

Terminal
claude mcp add lomberk -e LOMBERK_CONFIG=<LOMBERK_CONFIG> -e LOMBERK_AGENT_DSN=<LOMBERK_AGENT_DSN> -e LOMBERK_ADMIN_DSN=<LOMBERK_ADMIN_DSN> -- uvx lomberk==0.2.0
claude_desktop_config.json
{
  "mcpServers": {
    "lomberk": {
      "command": "uvx",
      "args": [
        "lomberk==0.2.0"
      ],
      "env": {
        "LOMBERK_CONFIG": "<LOMBERK_CONFIG>",
        "LOMBERK_AGENT_DSN": "<LOMBERK_AGENT_DSN>",
        "LOMBERK_ADMIN_DSN": "<LOMBERK_ADMIN_DSN>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "lomberk": {
      "command": "uvx",
      "args": [
        "lomberk==0.2.0"
      ],
      "env": {
        "LOMBERK_CONFIG": "<LOMBERK_CONFIG>",
        "LOMBERK_AGENT_DSN": "<LOMBERK_AGENT_DSN>",
        "LOMBERK_ADMIN_DSN": "<LOMBERK_ADMIN_DSN>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "lomberk": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "lomberk==0.2.0"
      ],
      "env": {
        "LOMBERK_CONFIG": "<LOMBERK_CONFIG>",
        "LOMBERK_AGENT_DSN": "<LOMBERK_AGENT_DSN>",
        "LOMBERK_ADMIN_DSN": "<LOMBERK_ADMIN_DSN>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

NameDescription
LOMBERK_CONFIG
Required		Absolute path to the lomberk.yaml that `lomberk setup` wrote. The connection strings and keys are read from the .env beside it.
LOMBERK_AGENT_DSN
Optional, secret		Connection string for the low-privilege role the agent's SQL runs as. Only needed when the .env beside lomberk.yaml doesn't set it.
LOMBERK_ADMIN_DSN
Optional, secret		Connection string for the control role that owns the lomberk schema (checkpoints, undo, ledger). Only needed when the .env beside lomberk.yaml doesn't set it.

Details

Package[email protected] (PYPI, stdio)
First published11 Nov 2026
Last updated11 Nov 2026
Registry nameio.github.ege-usta/lomberk

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