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Listings in Flex

Flex powers online marketplaces, and listings are at the core of any marketplace. This article explains the different aspects of listings in Flex.

Table of Contents

On a Flex marketplace, listings represent the items, facilities or services that users buy and sell or book and offer. Using extended data, listings can be modified to cover several different kinds of marketplaces.

Listing lifecycle

Between being created and deleted, listings go through several different states. Depending on the listing's state, they are either returned with the public Listing endpoints or they are only available to the listing's author.

When tracking listing events through the Integration API, it is important to also pay attention to the state of the listing. For instance, in the default FTW template implementation the listing is created as draft and then goes through several updates in the draft state before it is published. In other words, to catch the correct listing event, it is useful to filter by both event type and listing state.


When a listing is first created, it is created in state: draft. Draft listings are not returned by the listings/query endpoint, but they are visible to the author and through Flex Console. Draft listings can be published using the own_listings/publish_draft endpoint.

Pending approval

If the marketplace requires listing approval for new listings, a draft listing does not get published directly when the own_listings/publish_draft is called. Instead, it moves into state: pendingApproval. The operator can then approve the listing in Flex Console or, if the approval is dependent on e.g. an extended data attribute, through the listing approval Integration API endpoint. A use case for this would be e.g. a marketplace where non-paid members can publish one listing and paid members can publish unlimited listings – an integration could check whether the user has a premium: true flag in their metadata and approve the listing accordingly.


Published listings are returned by listings/query and listings/show endpoints.

After a listing has been published, it can still be modified by the author. Even if the marketplace has listing approval enabled, modifying listings after they are published does not set them back to the pendingApproval state. This means that the listing approval feature can not fully be used to moderate e.g. listing content, but rather the number of listings each user has active on the marketplace.


A listing can be closed by both the author and the marketplace operator. A closed listing is not returned by the listings/query and listings/show endpoints, but it is still returned by the own_listings/query and own_listings/show endpoints, i.e. it is visible to the author. Both author and marketplace operator can also open the listing after it has been closed i.e. set its state back to published.


Listings in Flex can only be deleted by the operator in Flex Console. In addition, if the author's user account is deleted, all their listings are marked deleted as well. Listing deletion is permanent. Deleted listings don't get returned by any listing endpoints. If a marketplace user has transactions related to a deleted listing, however, the deleted listing can be returned as an included related resource with no other data than the listing id and deleted: true.

Listing extended data

Listings are one of the resource types in Flex where you can add extended data. This means that listings can have custom attributes beyond the default ones that Flex offers. Extended data can be managed through Marketplace API own_listings and Integration API listings create and update endpoints, as well as in Flex Console for individual listings.

Two example use cases for listing extended data are custom search and differentiating between listing types. However, listing extended data is a powerful feature to customise listing behavior in Flex, so there are multiple use cases that can be solved with setting attributes in listing extended data and then either passing those attributes as query parameters or managing the client application behavior based on the attributes.

One of the most powerful features of Flex is the listing search using the listings/query endpoint. By default, you can query by price, keywords, origin, bounds, availability, and stock, among others.

In addition to the default parameters, you can query listings by public extended data attributes, i.e. public data and metadata. You will need to set a search schema for the attribute so that it is indexed for search within Flex.

Different types of listings

In addition to search filtering, you can also build views that filter listings by type.

You can for instance create service listings with availability and bookings, as well as product listings with stock, in the same marketplace, and differentiate them with a listingType attribute in listing extended data. With both availability and stock listings in the same marketplace, you likely want to have separate transaction processes, whose information is also saved in the listing extended data.

By passing listing type as a query parameter to the endpoint, you can then create differentiated views for the two types of listings. Again, using extended data as query parameters requires setting a search schema.

Some marketplaces want to allow filtering by entities that are not strictly speaking listings available to be purchased. Examples include searching by service provider, or searching for storefronts to see what listings they offer. In these kinds of cases, it is useful to model those elements as a new type of listing, and then determine their behavior in the client app based on the extended data attribute.

For instance, the FTW-hourly template handles yoga teacher profiles as bookable listings, which follows the concept of modeling entities as listings. You could also create a searchable storefront listing that cannot itself be booked, and instead it displays all the listings from that specific provider and allows users to contact the store.

In Flex, listings can be modeled and modified to cover a range of different use cases. If you are wondering about a use case for listings in Flex, do reach out to Flex Support through the chat widget in your Flex Console and let us know. We'll be happy to help you figure out your specific use case and give you some suggestions for implementation.