# Connect Langflow to Slack

Source: https://langbot.app/docs/en/recipes/langflow/slack

Step-by-step guide to running your Langflow app as a Slack bot with LangBot: Langflow setup, bot credentials, networking, testing and troubleshooting.

This recipe puts your Langflow app behind a Slack bot. LangBot receives messages from Slack, runs them through a pipeline, and sends the answer back, so you do not write any platform code.

Langflow builds agents and flows with a drag-and-drop editor. LangBot runs a flow through the Langflow API for every message.

## What you need

- A running LangBot instance: [LangBot Cloud](https://space.langbot.app/cloud) (no server needed) or a [self-hosted deployment](https://langbot.app/docs/en/deploy/langbot/docker.md) with Docker or `uvx langbot`.
- A Langflow account or instance that LangBot can reach over the network.
- A Slack workspace where you can install apps, plus **App Configuration Tokens** from the [Slack apps page](https://api.slack.com/apps) for the quick setup assistant.

## Networking

With Socket Mode, LangBot connects out to Slack and no public event URL is needed. Webhook mode needs a publicly reachable HTTPS endpoint.

## 1. Prepare Langflow

1. Build a flow in Langflow (the Simple Agent template is a good start).
2. Create an API key under **Settings**.
3. Copy the **Flow ID** from **Share → API access**.

## 2. Create a pipeline

Open **Pipelines** in the LangBot WebUI, create a pipeline (or edit the default one) and set **AI** as follows. If the runner is not listed, install the official runner plugin from **Plugins** or the [LangBot Space marketplace](https://space.langbot.app/market).

| Field    | Value                                                |
| -------- | ---------------------------------------------------- |
| Runner   | **Langflow** (official Langflow Agent runner plugin) |
| Base URL | Your Langflow address, reachable from LangBot        |
| API Key  | The Langflow API key                                 |
| Flow ID  | The flow to run                                      |

## 3. Create the Slack bot

1. Create a bot with the **Slack** adapter and use **Quick Slack setup**: it creates the app, scopes and event subscriptions for you.
2. Choose **Socket Mode** (recommended) and add an App-Level Token (`xapp-...`), or choose **Webhook** if LangBot has a public HTTPS address. Then fill the adapter configuration and enable the bot.

## 4. Bind and test

Open the bot, select the pipeline you created, save and make sure the bot is enabled.

Message the app from its **Messages** tab, or mention it in a channel it has been added to.

## Troubleshooting

- Connection refused: `http://localhost:7860` only works when Langflow runs on the same host and network namespace as LangBot.
- Do not paste the App Configuration Access/Refresh tokens into the App-Level Token field; it needs the `xapp-` token of the same app.
- Leave token rotation disabled for the App-Level Token.
- Check **Monitoring** in the WebUI: every message, pipeline run and error is recorded there.

## FAQ

### Do I need a server with a public IP for Slack?

Not necessarily. With Socket Mode, LangBot connects out to Slack and no public event URL is needed. Webhook mode needs a publicly reachable HTTPS endpoint.

### Does the Slack bot support streaming replies?

Check the [platform feature matrix](https://langbot.app/docs/en/insight/platform-features.md) for what this platform supports. Replies are delivered once the AI back end has finished.

### Can the same Langflow setup serve other platforms too?

Yes. A pipeline can be bound to many bots, so one configuration can answer on several platforms at once.

## Related guides

- [Full Slack setup guide](https://langbot.app/docs/en/usage/platforms/slack.md)
- [Full Langflow runner guide](https://langbot.app/docs/en/usage/pipelines/langflow.md)
- Other AI back ends on Slack: [Dify](https://langbot.app/docs/en/recipes/dify/slack.md) · [n8n](https://langbot.app/docs/en/recipes/n8n/slack.md) · [Coze](https://langbot.app/docs/en/recipes/coze/slack.md) · [DeepSeek](https://langbot.app/docs/en/recipes/deepseek/slack.md) · [OpenAI (ChatGPT models)](https://langbot.app/docs/en/recipes/openai/slack.md)
- Langflow on other platforms: [Telegram](https://langbot.app/docs/en/recipes/langflow/telegram.md) · [Discord](https://langbot.app/docs/en/recipes/langflow/discord.md) · [Lark (Feishu)](https://langbot.app/docs/en/recipes/langflow/lark.md) · [DingTalk](https://langbot.app/docs/en/recipes/langflow/dingtalk.md) · [WeCom (internal app)](https://langbot.app/docs/en/recipes/langflow/wecom.md) · [WeCom Intelligent Bot](https://langbot.app/docs/en/recipes/langflow/wecombot.md)