These docs are for version 1.x of Rasa Open Source.

## User Guide

- [Installation](https://legacy-docs-v1.rasa.com/1.7.4/user-guide/installation/)
- [Tutorial: Rasa Basics](https://legacy-docs-v1.rasa.com/1.7.4/user-guide/rasa-tutorial/)
- [Tutorial: Building Assistants](https://legacy-docs-v1.rasa.com/1.7.4/user-guide/building-assistants/)
- [Command Line Interface](https://legacy-docs-v1.rasa.com/1.7.4/user-guide/command-line-interface/)
- [Architecture](https://legacy-docs-v1.rasa.com/1.7.4/user-guide/architecture/)
- [Messaging and Voice Channels](https://legacy-docs-v1.rasa.com/1.7.4/user-guide/messaging-and-voice-channels/)
- [Evaluating Models](https://legacy-docs-v1.rasa.com/1.7.4/user-guide/evaluating-models/)
- [Validate Data](https://legacy-docs-v1.rasa.com/1.7.4/user-guide/validate-files/)
- [Configuring the HTTP API](https://legacy-docs-v1.rasa.com/1.7.4/user-guide/configuring-http-api/)
- [Deploying your Rasa Assistant](https://legacy-docs-v1.rasa.com/1.7.4/user-guide/how-to-deploy/)
- [Cloud Storage](https://legacy-docs-v1.rasa.com/1.7.4/user-guide/cloud-storage/)

## NLU

- [About](https://legacy-docs-v1.rasa.com/1.7.4/nlu/about/)
- [Using NLU Only](https://legacy-docs-v1.rasa.com/1.7.4/nlu/using-nlu-only/)
- [Training Data Format](https://legacy-docs-v1.rasa.com/1.7.4/nlu/training-data-format/)
- [Choosing a Pipeline](https://legacy-docs-v1.rasa.com/1.7.4/nlu/choosing-a-pipeline/)
- [Language Support](https://legacy-docs-v1.rasa.com/1.7.4/nlu/language-support/)
- [Entity Extraction](https://legacy-docs-v1.rasa.com/1.7.4/nlu/entity-extraction/)
- [Components](https://legacy-docs-v1.rasa.com/1.7.4/nlu/components/)

## Core

- [About](https://legacy-docs-v1.rasa.com/1.7.4/core/about/)
- [Stories](https://legacy-docs-v1.rasa.com/1.7.4/core/stories/)
- [Domains](https://legacy-docs-v1.rasa.com/1.7.4/core/domains/)
- [Responses](https://legacy-docs-v1.rasa.com/1.7.4/core/responses/)
- [Actions](https://legacy-docs-v1.rasa.com/1.7.4/core/actions/#)
- [Policies](https://legacy-docs-v1.rasa.com/1.7.4/core/policies/)
- [Slots](https://legacy-docs-v1.rasa.com/1.7.4/core/slots/)
- [Forms](https://legacy-docs-v1.rasa.com/1.7.4/core/forms/)
- [Retrieval Actions](https://legacy-docs-v1.rasa.com/1.7.4/core/retrieval-actions/)
- [Interactive Learning](https://legacy-docs-v1.rasa.com/1.7.4/core/interactive-learning/)
- [Fallback Actions](https://legacy-docs-v1.rasa.com/1.7.4/core/fallback-actions/)
- [Knowledge Base Actions](https://legacy-docs-v1.rasa.com/1.7.4/core/knowledge-bases/)

## Conversation Design

- [Dialogue Elements](https://legacy-docs-v1.rasa.com/1.7.4/dialogue-elements/dialogue-elements/)
- [Small Talk](https://legacy-docs-v1.rasa.com/1.7.4/dialogue-elements/small-talk/)
- [Completing Tasks](https://legacy-docs-v1.rasa.com/1.7.4/dialogue-elements/completing-tasks/)
- [Guiding Users](https://legacy-docs-v1.rasa.com/1.7.4/dialogue-elements/guiding-users/)

## API Reference

- [Action Server](https://legacy-docs-v1.rasa.com/1.7.4/api/action-server/)
- [HTTP API](https://legacy-docs-v1.rasa.com/1.7.4/api/http-api/)
- [Jupyter Notebooks](https://legacy-docs-v1.rasa.com/1.7.4/api/jupyter-notebooks/)
- [Agent](https://legacy-docs-v1.rasa.com/1.7.4/api/agent/)
- [Custom NLU Components](https://legacy-docs-v1.rasa.com/1.7.4/api/custom-nlu-components/)
- [Rasa SDK](https://legacy-docs-v1.rasa.com/1.7.4/api/rasa-sdk/)
- [Events](https://legacy-docs-v1.rasa.com/1.7.4/api/events/)
- [Tracker](https://legacy-docs-v1.rasa.com/1.7.4/api/tracker/)
- [Tracker Stores](https://legacy-docs-v1.rasa.com/1.7.4/api/tracker-stores/)
- [Event Brokers](https://legacy-docs-v1.rasa.com/1.7.4/api/event-brokers/)
- [Lock Stores](https://legacy-docs-v1.rasa.com/1.7.4/api/lock-stores/)
- [Training Data Importers](https://legacy-docs-v1.rasa.com/1.7.4/api/training-data-importers/)
- [Featurization of Conversations](https://legacy-docs-v1.rasa.com/1.7.4/api/core-featurization/)
- [Migration Guide](https://legacy-docs-v1.rasa.com/1.7.4/migration-guide/)
- [Rasa OSS Change Log](https://legacy-docs-v1.rasa.com/1.7.4/changelog/)

## Migrate from (beta)

- [Dialogflow](https://legacy-docs-v1.rasa.com/1.7.4/migrate-from/google-dialogflow-to-rasa/)
- [Wit.ai](https://legacy-docs-v1.rasa.com/1.7.4/migrate-from/facebook-wit-ai-to-rasa/)
- [LUIS](https://legacy-docs-v1.rasa.com/1.7.4/migrate-from/microsoft-luis-to-rasa/)
- [IBM Watson](https://legacy-docs-v1.rasa.com/1.7.4/migrate-from/ibm-watson-to-rasa/)

## Reference

- [Glossary](https://legacy-docs-v1.rasa.com/1.7.4/glossary/)

## Actions

Actions are the things your bot runs in response to user input.
There are four kinds of actions in Rasa:

1. **Utterance actions**: start with `utter_` and send a specific message to the user.
2. **Retrieval actions**: start with `respond_` and send a message selected by a retrieval model.
3. **Custom actions**: run arbitrary code and send any number of messages (or none).
4. **Default actions**: e.g. `action_listen`, `action_restart`, `action_default_fallback`.

### Utterance Actions

To define an utterance action (`ActionUtterTemplate`), add a response to the domain file that starts with `utter_`:
```yaml
responses:
  utter_my_message:
    - "this is what I want my action to say!"
```

### Retrieval Actions

Retrieval actions make it easier to work with a large number of similar intents like chitchat and FAQs.

### Custom Actions

An action can run any code you want. Custom actions can turn on the lights, add an event to a calendar, check a user’s bank balance, or anything else you can imagine.

### Default Actions

The available default actions are:
| Action                    | Description                                                                                       |
|--------------------------|---------------------------------------------------------------------------------------------------|
| `action_listen`         | Stop predicting more actions and wait for user input.                                            |
| `action_restart`        | Reset the whole conversation. Can be triggered during a conversation by entering `/restart`.      |
| `action_session_start`  | Start a new conversation session.                                                                |
| `action_default_fallback`| Undo the last user message and utter a message that the bot did not understand.                  |
