# Welcome!

Optiondata.io offers simple, modern API-first solutions to enable anyone, either individuals or businesses, to build algorithms to analyze U.S. stock option trades.

{% hint style="info" %}
The market we support currently:

U.S. Stock option trades
{% endhint %}

{% stepper %}
{% step %}

### Read our API documentation

[realtime-option-data-api](https://docs.optiondata.io/websocket-data-api/realtime-option-data-api "mention") and [historical-option-data-api](https://docs.optiondata.io/http-data-api/historical-option-data-api "mention")
{% endstep %}

{% step %}

### Get your API Key at our portal website

[OptionData Portal](https://portal.optiondata.io/)
{% endstep %}

{% step %}

### Test the API on our portal

[OptionData Portal](https://portal.optiondata.io/)
{% endstep %}

{% step %}

### Pay upfront and start your API service

[OptionData Portal](https://portal.optiondata.io/)
{% endstep %}

{% step %}

### Reach out to us if you have any question

Email: `support@optiondata.io`

WhatsApp                    Telegram

<div align="left"><figure><img src="https://1362181483-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FDJROLvMer7QV5Op2yce2%2Fuploads%2FIzsXYQ5XS5nLW8jgrEtC%2Fimage.png?alt=media&#x26;token=db684129-f451-4c70-b8ef-0b7aed44bbef" alt="" width="146"><figcaption></figcaption></figure> <figure><img src="https://1362181483-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FDJROLvMer7QV5Op2yce2%2Fuploads%2F98TyTOVRgNxrL0hKzPtE%2Fimage.png?alt=media&#x26;token=a7a6f261-9a07-43dd-983a-33b576c179f3" alt="" width="164"><figcaption></figcaption></figure></div>

Discord: <https://discord.com/invite/mE5pEDMdWs>

{% endstep %}
{% endstepper %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.optiondata.io/welcome.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.