# CKBull Signer API

## What is CKBull Signer API?

**CKBull Signer API** is a platform that allows dApps within the CKB ecosystem to integrate a transaction signing system via the [**CKBull Wallet**](https://ckbull.app/).

Developers can register their dApps on this platform using a developer interface, and they can interact with the signer API to create transactions.

{% hint style="info" %}
The **initial release** of the CKBull Signer API is completely free. As a developer, you are free to register a variety of dApps and use the API.
{% endhint %}


---

# 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.ckbull.app/readme.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.