# Plans

UniSat API can still be accessed without an API key. However, to ensure fair allocation of resources, we recommend including an API key in all requests. Requests made without a key, or with a free key, may face strict rate limits or even no response under high load. 

To provide everyone with convenient and diverse options for purchasing API keys, we offer several plans: **Free**, **Specialist**, **Enterprise**, **Custom**, and **'Pay as you go'**. For details: [unisat.io/plans](https://unisat.io/plans)

> Enjoy 20% off when you choose an annual Specialist or Enterprise plan

***

* **Free**: Ideal for conducting research and high-load testing. Obtain a one-time key for your short-term project. 

       ✔Rate Limit: 60,000 calls/month

       ✔Rate Limit: 5 calls/second

<figure><img src="/files/cNyAdFdCdivyKpbiGcJd" alt="" width="334"><figcaption></figcaption></figure>

* **Specialist**: Suitable for developers running larger scripts and blockchain startups with a growing user base.

<figure><img src="/files/XZyAeTbshJNox5UwWzkI" alt="" width="335"><figcaption></figcaption></figure>

* **Enterprise**: Perfect for wallets, exchanges, and startups in their growth phase.

<figure><img src="/files/SuAZgejvTNInY8QCFXaa" alt="" width="332"><figcaption></figcaption></figure>

* **Custom**: To inquire about a custom API plan, please feel free to contact us at <contact@unisat.io>.

<figure><img src="/files/TmQUAxXGrR0RUa0QqoNs" alt="" width="375"><figcaption></figcaption></figure>

* **Pay as you go**: Suitable for temporary high-demand needs with flexible usage.

<figure><img src="/files/naBzbhHsPvwNxKZ22TTZ" alt="" width="347"><figcaption></figcaption></figure>


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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://docs.unisat.io/developer-support/plans.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.