> For the complete documentation index, see [llms.txt](https://docs.ckbull.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ckbull.app/readme.md).

# 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.

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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 %}