Program Categories in the API

Affilitizer has introduced program category metadata to its developer interfaces, bringing the classification labels shown in the program directory into API responses and assistant integrations. Both standard and batch program endpoints, alongside connected Model Context Protocol (MCP) tools, now provide this merchant classification data directly.

What changed

• A new categories field has been added to every program object returned by the GET /api/v1/programs endpoint.
• The batch query endpoint, POST /api/v1/programs-batch, now provides the categories field for each program retrieved in a batch request.
• The categories field provides a list of category names corresponding to the classifications used in the Affilitizer program directory, such as "Fashion & Accessories".
• The same categories data is supplied through Affilitizer MCP tools, enabling AI assistants to determine which merchant shops correspond to specific categories.

Why it matters

Exposing the program directory categories directly across API endpoints eliminates discrepancies between the Affilitizer web interface and programmatic data feeds. Publishers and technical teams can use the returned category names to organize merchant programs, filter records by commercial sector, or align affiliate partnerships with internal vertical classifications without manual review. Furthermore, delivering this context through MCP tools allows connected AI assistants to identify the specific categories associated with individual shops when performing automated lookups or classification tasks.

Announced on the Affilitizer Changelog.