Tabellum

Tabellum — MCP setup

Let your AI assistant work with your databases through Tabellum, a desktop database client for PostgreSQL, MySQL/MariaDB, SQL Server and BigQuery. The MCP server is hosted by the running app on your machine; this package is a small stdio shim that forwards to it. Queries the assistant writes appear live in the editor, and nothing that changes data runs without your click in the app.

• Server: tabellum
• Transport: stdio (local process)
• Package: @dudko.dev/tabellum-mcp — Node.js 24+
• Auth: a per-install token the app generates; the shim reads it for you from ~/.tabellum/mcp.json.

What you can do

With the Tabellum app open, the assistant gets the same tools as the app's own agent — the app serves them, so the list follows the app version. Reads run at once; anything that writes waits for your click in the app.

Resources, for clients that prefer them: tabellum://connections, tabellum://schema/ , tabellum://snapshots, tabellum://dashboards, tabellum://designs. Every call is attributed in the app — a badge on the tab and a line in the agent log.

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Install in Claude Code (plugin)

/plugin marketplace add dudko-dev/tabellum-mcp-setup

/plugin install tabellum@tabellum /reload-plugins

Start the Tabellum app first (macOS, Windows or Linux). The shim reads the app's local port and token from ~/.tabellum/mcp.json, written while the app runs; with the app closed every call answers "Tabellum is not running".

Prefer not to use the marketplace? Add the server directly:

`

claude mcp add tabellum -- npx -y @dudko.dev/tabellum-mcp

`

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Connect from other clients

Claude Desktop

claude_desktop_config.json (Settings → Developer → Edit Config):

{

"mcpServers": { "tabellum": { "command": "npx", "args": [ "-y", "@dudko.dev/tabellum-mcp" ] } } }

Cursor

~/.cursor/mcp.json or .cursor/mcp.json:

{

"mcpServers": { "tabellum": { "command": "npx", "args": [ "-y", "@dudko.dev/tabellum-mcp" ] } } }

VS Code (GitHub Copilot / MCP) and other clients

{

"servers": { "tabellum": { "type": "stdio", "command": "npx", "args": [ "-y", "@dudko.dev/tabellum-mcp" ] } } }

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Safety

• The engine classifies, you approve. Every statement is classified by the app's parser; anything that is not a read goes through propose_write and waits for your click. A label claimed by the model never overrides it.
• Loopback only. The app listens on 127.0.0.1 with a per-install bearer token (Settings → Agents shows it and can regenerate it).
• Row data is opt-in per connection. sample_rows returns rows only where you enabled sharing for that connection.

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Troubleshooting

• "Tabellum is not running" — open the app, then retry.
• Unauthorized after regenerating the token — restart the MCP server in your client so the shim re-reads ~/.tabellum/mcp.json.
• A write seems stuck — it is waiting for approval in the app; after 10 minutes it returns declined: timeout.

Support

• Website: https://tabellum.dudko.dev
• Contact: siarhei@dudko.dev