---
title: "Smarter collection filters"
description: "Product type stays selected while shoppers filter, and AI clients can choose your collection filters from your catalog data."
date: 2026-09-14
tags: ["Themes", "API"]
---

> Changelog Index
> Fetch the complete changelog index at: https://docs.firearmcart.com/changelog/llms.txt
> Use this file to discover all available entries before exploring further.

# Smarter collection filters

Two changes to the filters on collection pages.

**Product type stays selected.** A menu link that opens one product type, such as Suppressors, now shows a ticked **Product type** filter. Adding a caliber or any other filter keeps it, so choosing 9mm narrows the suppressors instead of switching to every 9mm product in the store. Ticking a second type widens the results to either type. See [Filters on collection pages](/products/collections#filters-on-collection-pages).

**AI clients can curate your filters.** With nothing selected in the theme's **Collection Filters** setting, every specification in your catalog becomes a filter, which on a distributor catalog can mean hundreds of dropdowns. Two new [Theme Dev MCP](/api/mcp) tools let an AI client do the choosing. `list-collection-filters` shows every specification group with how many products carry it, its most common values and the product types it applies to. `set-collection-filters` saves the chosen groups to the theme, rejecting any name your catalog does not have. See [Tools](/api/mcp/tools#list-collection-filters).

Source: https://docs.firearmcart.com/changelog/2026-09-14-collection-filters/index.mdx