---
title: "open connection · RUAL Documentation"
description: "Opens a new lettermint connection using the given API token."
canonical: https://docs.rual.nl/block-types/lettermint/lettermintconnection_open
language: en
---

# open connection

This block is part of the [`lettermint`](https://docs.rual.nl/block-types/lettermint) group and was last modified in core [`v15.0.0`](https://docs.rual.nl/core-versions/150000).

Opens a new lettermint connection using the given API token.

- flow `flow`

- token required `value`

- flow `flow`

- success `condition`

- error `value`

- connection `lettermintconnection`

A typical wiring for [open connection](https://docs.rual.nl/block-types/lettermint/lettermintconnection_open): a [function trigger](https://docs.rual.nl/block-types/globals/trigger_custom_function) starts the flow; [value](https://docs.rual.nl/block-types/value/value_default) feeds the `value` pin; the `flow` out pin feeds [debug](https://docs.rual.nl/block-types/state%20ui/state_debug).

![Studio canvas example for the open connection block: typical wiring for open connection.](https://docs.rual.nl/canvas-examples/lettermintconnection_open.png)

### Version history

Introduced in [`v15.0.0`](https://docs.rual.nl/core-versions/150000).

### Service documentation