Relevant news

Discover the latest news and resources we have available.



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Type of news

Highlights news

June 14, 2024

Listing types and exposures: Create listings in Classic type for MLM

Item specifications

Starting on June 17th you can take advantage of the Classic listing option for your listings on MLM.

May 03, 2024

Campaigns, Ads and Metrics. Field replacement

Guide for Mercado Ads

Starting from May 13th, the new field "acos_top_search_target" will replace the current field "acos_top_modifier". The field "acos_top_search_target" is the ACOS (Advertising Cost of Sales) target defined for a campaign in order to bid specifically for the top search results.


April 2024

April 18, 2024

Listing types and exposures: Create listings in Classic type for MCO

Item specifications

Now you can take advantage of the Classic listing option for your listings on MCO.

March 2024

March 14, 2024

New shipping cost endpoint and deprecation of old endpoints


Use the new endpoint /users/$user_ID/shipping_options/free to get correct information about shipping cost, as since May 30th the following endpoints will be deleted: /items/$item_ID/shipping_options/free, /items/shipping_options/free, /users/$user_id/items/shipping_options/free

February 2024

February 28, 2024

We will remove the previous version of the seller-promotions API


From May 2nd you will have to adapt your development with the new version of the seller-promotions API. To consume this new version you must add the new query param version=v2. After this date, the previous version will be deleted and will no longer have access to this request.

February 26, 2024

Access token required in GET and MULTIGET requests in Items

API resources

From March 11, the use of access token will be mandatory in all GET and MULTIGET requests in Items. In case of not using the access token we will respond with error to your request.

February 20, 2024

Official Stores

Getting started

We updated the response of the /users/brands endpoint, where you can identify 3 new fields: "status", "normalized_name" y "last_updated".

February 06, 2024

Create listings in Premium and Classic type for MCO


Starting March 18th you will be able to create listings in Premium and Classic type for Colombian sellers.

February 06, 2024

Create size charts with the new Fashion domains


Starting February 20th you will be able to create size charts with the new Fashion domains. See the full list in the First Steps documentation.

February 02, 2024

Shopping experience: use the new listing quality feature

Metrics & News

Perform GET to /$ITEM_ID/purchase_experience to identify the status of the listings, and the detail of the problem based on its claims and cancellations and check out the suggestions for improvements, and possible consequences that will impact the item.

January 2024

January 31, 2024

Develop with the new Automated co-participation and competitive pricing campaign


From january 31 you will be able to develop with the new Automated co-participation and competitive pricing campaign. With the new features you can identify and opt-in items in these campaigns.

January 11, 2024

Manage promotions: Pagination

Manage Promotions

We updated the way to paginate through candidate items. You should include the "searchAfter" parameter in the request, which you will obtain at the end of each response until reaching the last item.

January 10, 2024

Size chart: We provide a new type of measurement

API resources

Starting from February, you will be able to create the size chart specifying the type of measurement in the TOPS and BOTTOMS domains. In the POST /catalog/charts, a new attribute "measure_type" has been added, which can take the values CLOTHING_MEASURE or BODY_MEASURE.

January 05, 2024

Create size charts in BOTTOMS domains


To continue improving sellers' listings, now you can create size charts in the BOTTOMS domains. Check the available domains by doing GET to /catalog/charts/CBT/configurations/active_domains

December 2023

December 12, 2023

Review the new acos_top_modifier attribute and improve product visibility

Mercado Ads

Review the 'acos_top_modifier' attribute to create or modify Ads campaigns, aiming to enhance the ranking of your sellers' products through the implementation of a boost.

November 2023

November 30, 2023

MLC: Update the electronic listings with their specifications

Item specifications

Use the new resources to update the listings of electronic products sold in Chile and subject to Specific Regulations, incorporating their sec stamp or energy label as appropriate.

November 17, 2023

Mandatory attributes: in flooring, tiles, and other domains


Please note that starting in early January, we will begin moderating posts that do not have these attributes loaded. You must specify the mandatory attributes Sales Unit (SALE_UNIT) and Sales Unit Yield (YIELD_OF_SALES_UNIT) to standardize your publications for the flooring, siding and others.

November 08, 2023

New resource for size chart conversion by country


To receive the equivalent sizes by country you only need to provide the international sizes. The local sizes will be included automatically. To search for the converted sizes make a GET request to /marketplace/sizechart/equivalences, specifying the domain, gender and siteId.

October 2023

October 27, 2023

Associate the size chart when creating items in Fashion Domains

Size charts

From November 30, 2023 it will be a requirement to work the TOPS domains with the List of values that Mercado Libre provides in the data sheet. When consulting the datasheet of a size chart in these domains you will find an attribute of type "value_type": "list"

October 10, 2023

Develop with the new Full Unhealthy Stock Campaign


Use the new Full Unhealthy Stock Campaign resources to identify and opt-in items in the promotion. This promotion helps the seller to avoid prolonged stock in Fulfillment centers,

October 05, 2023

Review the attributes of the public /items API


Starting from October 26th, we will make modifications to the attributes in the GET request of the /items endpoint in our public API, removing some attributes and authenticating others to be consumed only with the seller's token. Consult the updated documentation Global items and Marketplace items.

September 2023

September 29, 2023

New limits of active items according to the seller's reputation


As of October 2, with the resource /marketplace/users/cap you will be able to get information about the new limits of active items in the listings according to the seller's reputation.

September 27, 2023

Promotions: Develop with new resources


Use /seller-campaign resources to let your sellers self-manage their promotions. Your sellers will be able to create, modify, delete and consult their promotions, increasing their chances of selling.

September 25, 2023

New blocked message field substatus

Claims & Moderations

Use /marketplace/messages/ packs/$PACK_ID to identify the new blocked message field substatus blocked_by_refund when a refund has already been made on the order.