> For the complete documentation index, see [llms.txt](https://docs.api.market/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.api.market/seller-docs/what-is-an-api-product.md).

# What is an API Product?

An **API product** is the listing customers see and subscribe to on api.market. Your API source is the technical connection to your backend; the product is the public page — with a name, description, pricing, and the endpoints you choose to expose.

### 🔄 Source vs. product

|             | API Source                             | API Product                           |
| ----------- | -------------------------------------- | ------------------------------------- |
| What it is  | Your OpenAPI spec + backend connection | The marketplace listing               |
| Who sees it | Only you                               | Customers on api.market               |
| Contains    | All endpoints from your spec           | Selected endpoints, pricing, and copy |

You always import a **source** first, then create one or more **products** from it.

### 🛠️ Create a product

You can start two ways:

* From **API Sources**, click **Create Product** on the green banner.
* From **Manage APIs → API Products**, click **Create Product**.

#### 🔗 Choose your product slug

The **API prefix / product slug** becomes part of the URL customers call. Use lowercase letters, numbers, and hyphens, and keep it short and descriptive.

<div data-with-frame="true"><figure><img src="/files/qGgzWK0yaBaRJ4O0Ohhy" alt=""><figcaption></figcaption></figure></div>

{% hint style="warning" %}
⚠️ **Important:** You cannot change the slug after the product is created, so choose it carefully.
{% endhint %}

### 📝 Fill in the product details

After creating the product you land on **Product Settings**. A **publishing checklist** at the top tracks what is left to do:

| Step                 | Requirement                      |
| -------------------- | -------------------------------- |
| 1. Product details   | Title, subtitle, and description |
| 2. Pricing plans     | At least one plan                |
| 3. Submit for review | Unlocks after steps 1 and 2      |
|                      |                                  |

<div data-with-frame="true"><figure><img src="/files/Na1xSR3sHrS6aHETSQT4" alt=""><figcaption></figcaption></figure></div>

Fill in:

* **Title** — a clear, catchy headline for your product page.
* **Subtitle** — a one-line summary (max 160 characters).
* **Description** — the full product page, written in markdown. Add features, examples, and FAQs, or click **Generate with AI** for a starting draft.

{% hint style="info" %}
💡 **Tip:** Use **Preview Product** (top right) to see exactly how your listing looks to customers, and click **Save** as you go.
{% endhint %}

When your details are filled in, step 1 of the checklist turns green.

***

**Next →** [What Are Pricing Plans](/seller-docs/what-is-a-pricing-plan.md)