MCP server

DESIGN.md Linter & Extractor

app.openkrill/design-md

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Lint and diff DESIGN.md files with the official Google linter, or write one from a web page.

Working at last checkVerified publisher: openkrill.appAbout 2,154 tokens per request once connected6 tools

https://designmd.openkrill.app/mcp

At a glance

Type: MCP server
Publisher: openkrill.app (verified by the MCP Registry)
Status: Working at last check
Tools: 6
Token cost: About 2,154 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 26 Oct 2026, 08:29 UTC

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http design-md https://designmd.openkrill.app/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.design-md]
url = "https://designmd.openkrill.app/mcp"

Gemini CLI

{"mcpServers":{"design-md":{"httpUrl":"https://designmd.openkrill.app/mcp"}}}

Cursor

{"mcpServers":{"design-md":{"url":"https://designmd.openkrill.app/mcp"}}}

VS Code

{"servers":{"design-md":{"type":"http","url":"https://designmd.openkrill.app/mcp"}}}

Antigravity

agy mcp add design-md https://designmd.openkrill.app/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"design-md","server_url":"https://designmd.openkrill.app/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"design-md","server_url":"https://designmd.openkrill.app/mcp"}

diff_design_md ~494 tokens
Compares two versions of a DESIGN.md file the way `npx @google/design.md diff` does. Best for: deciding whether a DESIGN.md change is breaking before it is merged. Pass the whole old file in base_text and the whole new file in target_text, each including the YAML front matter; a file path or URL wil
extract_design_md ~465 tokens
Writes a starter DESIGN.md file from the CSS of one public webpage. Best for: a user who gives a website address and wants its colors, fonts, spacing, corner radii and component styles as a DESIGN.md file. Returns: markdown (the DESIGN.md text in the open Google format, YAML tokens then the 8 standa
lint_design_md ~394 tokens
Lints one DESIGN.md file with the official @google/design.md 0.4.0 linter, the same check as `npx @google/design.md lint DESIGN.md`. Best for: checking a DESIGN.md file the user pasted before it goes to a coding agent. Pass the whole file contents in text, including the YAML front matter between the

Promptarch
Research-backed lint + generation for agent context files (CLAUDE.md, AGENTS.md) + prompt enhancer.
Designesy
Design quality gate for AI-generated UI: score any URL on 45 deterministic checks, A–F grade.
Voice Agent Linter
Lints a phone voice agent prompt and platform config before real callers reach it.
IA-QA — 130+ QA & Dev Tools for AI Agents
130+ QA & dev tools for AI agents: prompt injection, RAG testing, VLM eval, guardrails. Free.
Constitution Lint
Static linter for CLAUDE.md-style agent constitution files: 10 operational-guardrail checks.
stillindexed SEO checkers
Indexability, robots.txt, sitemap, TLS, domain expiry and Googlebot-vs-browser checks. No account.
Designers
Checks, prompts and skills for designers working with AI: contrast, a11y, heuristics, critique.
Robots.txt Policy Lint
{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key

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