The A2UI Atomic Catalog MCP server,
connected in one click.
500+ typed UI atoms an agent composes into real rendered interfaces. Free, no API key. Connect the official A2UI Atomic Catalog 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 A2UI Atomic Catalog 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 a2ui-atomic-catalog https://a2uicatalog.ai/mcpRun in your terminal, then restart Claude Code.
A2UI Atomic Catalog · https://a2uicatalog.ai/mcp
What your AI can do with A2UI Atomic Catalog
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “list_catalogs”: List every A2UI catalog with a when-to-use, so you can pick the extension catalogs a surface needs. The base catalog (a2ui-atoms-v1) is alwa.”
“Use “get_catalog”: Return one catalog's atoms (type + one-line description) so you know its vocabulary.”
“Use “find_atoms”: Semantic search over the atom catalog: describe the UI piece you need in plain words and get the best-matching atoms, ranked best-first, eac.”
“Use “get_atom_schema”: Return the PROP SHAPE (field names + what each field takes) for named atoms. get_catalog tells you an atom EXISTS; this tells you how to fil.”
How secure is the A2UI Atomic Catalog MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how A2UI Atomic Catalog holds up.
Official endpoint
Operated by A2UI Atomic Catalog (a2uicatalog.ai) 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 A2UI Atomic Catalog 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 A2UI Atomic Catalog
Choose A2UI Atomic Catalog in the gate directory. No sign-in needed.
Use it anywhere
A2UI Atomic Catalog'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 A2UI Atomic Catalog exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
list_catalogs — List every A2UI catalog with a when-to-use, so you can pick the extension catalogs a surface needs. The base catalog (a2ui-atoms-v1) is alwa
get_catalog — Return one catalog's atoms (type + one-line description) so you know its vocabulary.
find_atoms — Semantic search over the atom catalog: describe the UI piece you need in plain words and get the best-matching atoms, ranked best-first, eac
get_atom_schema — Return the PROP SHAPE (field names + what each field takes) for named atoms. get_catalog tells you an atom EXISTS; this tells you how to fil
required_catalogs — Given an A2UI payload, return the resolvable catalog URIs it needs (deterministic — pure function of the atoms).
build_multi_page_surface — Build a multi-section A2UI app from raw title+content sections — you never estimate size or decide how to split; each section becomes its ow
make_surface_url — Render an A2UI payload in the CALLER'S OWN environment. Pass renderer_url (your deployed renderer /exec) and get a live URL + the catalogs i
preview_url — Quick DEMO render on the public renderer (ephemeral, nothing stored). Limited to 2 runs per client, then deploy your own renderer and use ma
+ 32 more tools once connected
Who runs the A2UI Atomic Catalog MCP server?
The A2UI Atomic Catalog MCP server at a glance
https://a2uicatalog.ai/mcpQuestions, answered
Is there an official A2UI Atomic Catalog MCP server?
Yes — A2UI Atomic Catalog operates its own remote MCP server at a2uicatalog.ai. 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 A2UI Atomic Catalog to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick A2UI Atomic Catalog in the directory. No account or sign-in is needed. From then on, A2UI Atomic Catalog's tools are available in every client you've connected to gate.
Do I need to host anything?
No. A2UI Atomic Catalog runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the A2UI Atomic Catalog 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 A2UI Atomic Catalog in minutes. No credit card required.
Connect more than just A2UI Atomic Catalog
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up A2UI Atomic Catalog in: Claude · Claude Code · ChatGPT · Cursor · VS Code
Give your AI A2UI Atomic Catalog — safely.
One URL. All MCPs. Full control. Free to start.
Get started free