Design Constraint Validator

Name: Design Constraint Validator
Author: CseperkePapp

by CseperkePappcommunityv2.3.0

Validates design tokens and style values against constraint rules such as WCAG contrast, monotonic scales, thresholds, and cross-axis policies. It also provides explanations and dependency graphs for token relationships, including an MCP server interface for agent clients.

From the registry: Validate design tokens for accessibility, scales, and design-system constraint consistency.

GitHub Repository

Install & configure

Prerequisites

required
Install Node.js 18+
Node.js version 18.x or newer is required to run the package.

Install in your client

Paste into the AI you're chatting with — it will figure out the rest

Please install the `design-constraint-validator` MCP server into my current AI client (that's you).

Required prerequisites (do these first if not already done):
- **Install Node.js 18+** — Node.js version 18.x or newer is required to run the package.

Canonical MCP server config (stdio transport):
- command: `npx`
- args: ["-y","--package","design-constraint-validator","dcv-mcp"]

Note: DCV exposes its MCP server via the `dcv-mcp` binary over stdio. The README recommends invoking it with `npx` and the `design-constraint-validator` package. No environment variables are documented for MCP startup.

Add this MCP server to my current client's config in the correct format for you. If you need secrets or credentials I haven't provided, ASK me — do not invent values or leave raw placeholders. After adding it, tell me how to verify the server is connected.

Note: DCV exposes its MCP server via the `dcv-mcp` binary over stdio. The README recommends invoking it with `npx` and the `design-constraint-validator` package. No environment variables are documented for MCP startup.