a2ui-atomic-catalog SKILL.md skillA
a2ui-atomic-catalog from a2uicatalog/a2ui is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add a2uicatalog/a2ui/a2ui-atomic-catalog@git:20261029.de5febfPins git:20261029.de5febf in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- a2uicatalog/a2ui
- Path
SKILL.md- Versions recorded
- 8
- Latest version
- git:20261029.de5febf, committed Oct 29, 2026
- First version recorded
- Jul 31, 2026
- Size
- 2,740 bytes
- Repository stars
- 6
- License
- MIT
Renders real interactive UI — charts, gauges, steppers, dashboards, decision trees — for AI agents instead of generating raw HTML. Use this skill when a user needs to SEE something rather than read a description of it, and the host (Claude, another MCP client, a Gemini Enterprise agent) can display rendered visuals or open a link. Do not use for plain prose answers, for data retrieval (this renders data, it does not fetch it beyond a few declared sources), or on hosts that cannot display HTML.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# A2UI Atomic Catalog
573 typed UI atoms an AI agent composes into real rendered interfaces — web, Google Meet,
Apps Script, Google Chat and MCP Apps — instead of writing HTML by hand. The agent names a
component from a fixed vocabulary; a renderer that already knows that component draws it.
## Connect
MCP server, no auth, no signup, no API key:
```
https://a2uicatalog.ai/mcp
```
`POST` speaks JSON-RPC 2.0 (MCP Streamable HTTP). `GET` with `Accept: application/json`
returns a machine-readable descriptor listing every tool, current rate limits, and
documentation links.
## How to use it
1. **`list_catalogs`** — pick the catalog slice the task actually needs. Do not load the
whole 573-atom vocabulary into context for a one-chart request.
2. **`get_catalog`** — read the real field contracts for that slice. Never guess a field
name; a hallucinated field is a validation error, not a broken render.
3. **Render**, by host capability:
- `render_surface` — MCP Apps-capable hosts (Claude.ai and others): renders inline in
the conversation, no URL.
- `preview_url` — any other host: returns a shareable link (rate-limited demo renderer).
…Read the whole file at its exact version.
How to install
mdr add a2uicatalog/a2ui/a2ui-atomic-catalog@sha256:3968de7a5ce9fb62The line at the top of this page pins the label git:20261029.de5febf, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_rghya7htw37avbz4)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 8 versions of this file, between Jul 31, 2026 and Oct 29, 2026, about one every 13 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261029.de5febf latest | 2026-10-29 | de5febf | 2,740 B | A | view · diff |
| git:20261027.64c33d9 | 2026-10-27 | 64c33d9 | 2,740 B | A | view · diff |
| git:20261027.eae0868 | 2026-10-27 | eae0868 | 2,740 B | A | view · diff |
| git:20261027.d650f11 | 2026-10-27 | d650f11 | 2,740 B | A | view · diff |
| git:20261027.5b2f0d3 | 2026-10-27 | 5b2f0d3 | 2,740 B | A | view · diff |
| git:20261021.a893d14 | 2026-10-21 | a893d14 | 2,740 B | A | view · diff |
| git:20261018.48c8d8d | 2026-10-18 | 48c8d8d | 2,740 B | A | view · diff |
| git:20260731.a64d083 | 2026-07-31 | a64d083 | 2,740 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (2740 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
a2uicatalog/a2ui · 6 stars · license MIT · pushed 2026-10-30 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_rghya7htw37avbz4 GET https://markdownregistry.com/api/v1/resolve?ref=a2uicatalog/a2ui/a2ui-atomic-catalog GET https://markdownregistry.com/api/v1/blob/3968de7a5ce9fb627c50af74d5d2700e959abfb52d231675d59616a898d66fb8
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.