> For the complete documentation index, see [llms.txt](https://docs.portexai.com/portex-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.portexai.com/portex-docs/data-marketplace/create-a-listing.md).

# Create a Listing

Once you have uploaded a dataset, you can create a listing to make it discoverable and purchasable on the Datalab.

## Step 1: Listing Type

From the Data Studio, go to Listings > New Listing. Choose your listing type:

<figure><img src="/files/kETuLMzcNgoILnmZQjFY" alt=""><figcaption></figcaption></figure>

* Buy Now + Bidding: buyers can purchase instantly or submit a sealed bid
* Buy Now Only: fixed-price purchase
* Bidding Only: sealed-bid auction. Set a minimum bid.

Set the Buy Now price and/or minimum bid, then click Continue.

## Step 2: Listing Details

<figure><img src="/files/4ZOcEh5VC9BGYOCQiy5G" alt=""><figcaption></figcaption></figure>

Fill in the listing details:

* Title
* Short description (max 300 characters)
* Long description (markdown editor with image upload)
* Modality, Domain, and Use Case tags
* Recipient address (EVM wallet for USDC payouts)
* License: select a PSDLA variant (see [PSDLA](/portex-docs/core-concepts/psdla.md))
* Delivery method: Dataset (default)
* Preview image: upload or auto-generate
* Dataset: select from your uploaded datasets

### Schema editor

For Parquet files, you can edit column descriptions to help buyers understand the dataset structure. Select the dataset and click "Edit" to open the schema editor.

<figure><img src="/files/7z7dBiFTRieEczctPTiC" alt=""><figcaption></figcaption></figure>

## Step 3: Publish

Toggle between Draft and Live at the bottom of the editor. Click "Create Listing" to publish.

Your listing now appears on the Explore page. You can return to the Data Studio at any time to edit pricing, descriptions, or toggle it back to draft.