The Designers MCP server,
connected in one click.
Checks, prompts and skills for designers working with AI: contrast, a11y, heuristics, critique. Connect the official Designers MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
Add Designers to your AI in one minute
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http designers https://designers.allthepossibles.com/mcpRun in your terminal, then restart Claude Code.
Designers · https://designers.allthepossibles.com/mcp
What your AI can do with Designers
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “check_contrast”: Check colour contrast. Give fg and bg, or pairs (a list of {fg, bg, label, sizePx, bold}), or a palette. Returns the WCAG 2.2 ratio with AA.”
“Use “audit_page_accessibility”: Audit one page's static HTML for accessibility problems and name the WCAG 2.2 criterion for each: missing lang or title, images without alt,.”
“Use “heuristic_worksheet”: Build a Nielsen ten-heuristics review worksheet for a screen or flow. Give text (the copy of the flow), html or a url. Returns, for each heu.”
“Use “detect_design_slop”: Look for the default AI-generated design look in a live page's markup and CSS: purple-to-blue gradients, gradient text, a default font stack.”
How secure is the Designers MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Designers holds up.
Official endpoint
Operated by Designers (allthepossibles.com) at its documented MCP endpoint — not a third-party mirror or community re-host.
No sign-in needed
This server only exposes public data — no account and no credentials are involved when you connect.
Scanned before it goes live
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
Watched for drift
If Designers adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Connected in three steps
Connect your gate
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Pick Designers
Choose Designers in the gate directory. No sign-in needed.
Use it anywhere
Designers's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
The actual tools Designers exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
check_contrast — Check colour contrast. Give fg and bg, or pairs (a list of {fg, bg, label, sizePx, bold}), or a palette. Returns the WCAG 2.2 ratio with AA
audit_page_accessibility — Audit one page's static HTML for accessibility problems and name the WCAG 2.2 criterion for each: missing lang or title, images without alt,
heuristic_worksheet — Build a Nielsen ten-heuristics review worksheet for a screen or flow. Give text (the copy of the flow), html or a url. Returns, for each heu
detect_design_slop — Look for the default AI-generated design look in a live page's markup and CSS: purple-to-blue gradients, gradient text, a default font stack
review_ui_copy — Review interface copy, one string per line, optionally prefixed with a type (button:, error:, empty:, tooltip:, placeholder:, heading:, toas
lint_design_feedback — Lint design critique. Sorts each note into observation, opinion, solution-without-problem, vague, or question, explains what is missing, and
plan_critique — Plan a design critique for a stage (concept, wireframe, visual, prototype, build, shipped): a framing statement, timed agenda, the questions
lint_research_questions — Lint user research questions, one per line, for leading wording, double-barrelled questions, hypotheticals, predictions, loaded words, jargo
+ 13 more tools once connected
Who runs the Designers MCP server?
The Designers MCP server at a glance
https://designers.allthepossibles.com/mcpQuestions, answered
Is there an official Designers MCP server?
Yes — Designers operates its own remote MCP server at designers.allthepossibles.com. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
How do I connect Designers to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick Designers in the directory. No account or sign-in is needed. From then on, Designers's tools are available in every client you've connected to gate.
Do I need to host anything?
No. Designers runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the Designers MCP server safe to connect?
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Is it free?
Yes — you can get started with gate for free and connect Designers in minutes. No credit card required.
Connect more than just Designers
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up Designers in: Claude · Claude Code · ChatGPT · Cursor · VS Code