---
title: "tool si.read.brand_design_system_changes"
description: "the brand and two versions, else the two newest: every value that differs, by path, with the basis on each side, and the counts."
section: reference
address: /reference/tools/si-read-brand_design_system_changes
contract: 0476e35e6e275db5
---

# tool si.read.brand_design_system_changes

the brand and two versions, else the two newest: every value that differs, by path, with the basis on each side, and the counts.

[figure: Over MCP, si.read.brand_design_system_changes takes BrandDesignSystemChangesInput and returns a card whose body is BrandDesignSystemDiff.]

every value that differs, by path, with the basis on each side, and the counts. The call needs the read grant at the brand rung.



| | |
|---|---|
| input | [BrandDesignSystemChangesInput](/concepts/branddesignsystemchangesinput) |
| result | a card whose body is [BrandDesignSystemDiff](/concepts/branddesignsystemdiff) |
| read-only | yes |
| destructive | no |
| card address | `ui://scale-intelligence/cards/BrandDesignSystemDiff` |
| HTTP route | [`/v1/read/brand_design_system_changes`](/reference/read/brand_design_system_changes) |





| field | type | required | note |
|---|---|---|---|
| `brand` | `id` | yes |  |
| `from_version` | `count` | no |  |
| `to_version` | `count` | no |  |