# Account Information Service Provider (AISP)

{% hint style="success" %}
Heya! Before checking this page, make sure that you [registered yourself as a TPP](/psd2/are-you-a-third-party-provider-tpp-start-here/register-as-a-tpp.md) in our API first.
{% endhint %}

As an AISP, you are allowed to authenticate in a user’s account and access (read) the following account information:

1. legal name
2. IBAN
3. nationality
4. card validity data
5. transaction history
6. account balance

To read the user's information, you need to establish a connection with their bunq account. You can do it using an **authorization request**. Once a bunq user has confirmed the authorization request and you have done the **token exchange**, you can activate the Access Token (use it as an API key).

Token activation happens when you create an API context (install it and link your IP adrress and device to it). See the [OAuth](/basics/authentication/oauth.md) page for the full flow illustration.

{% content-ref url="/pages/nQpuM79hqrXIE9iNgCIm" %}
[OAuth](/basics/authentication/oauth.md)
{% endcontent-ref %}

An active Access Token allows you to communicate with the bunq user’s account. You can use it to start a session to interact with the monetary accounts the user allows you to access.


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# 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://doc.bunq.com/psd2/account-information-service-provider-aisp.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.