llms.txt@publicA

llms.txt@public from a2uicatalog/a2ui is an llms.txt file: plain text a project publishes for AI models to read.

Install it, pinned
mdr add a2uicatalog/a2ui/public/llms.txt@git:20261029.de5febf

Pins git:20261029.de5febf in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 14 of 14 checks passed
Kind
llms.txt file
Repository
a2uicatalog/a2ui
Path
public/llms.txt
Versions recorded
24
Latest version
git:20261029.de5febf, committed Oct 29, 2026
First version recorded
Aug 22, 2026
Size
9,370 bytes
Repository stars
6
License
MIT

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 Catalog (the A2UI Atomic Catalog)

> Open-source, typed UI vocabulary (573 atoms) an AI agent uses to compose real interfaces — web, Google Meet stages, Apps Script web apps, Google Chat cards, MCP Apps and Android apps — from one JSON schema payload, instead of generating HTML.

## Start here

- [What is A2UI?](https://a2uicatalog.ai/what-is-a2ui/): Plain-English guide to the A2UI protocol: how agents send UI as JSON, how it travels over MCP, AG-UI and A2A, where it renders, and how it differs from generated HTML. Includes a 26-second explainer film.

## Integrate & Developer Resources

- [MCP server](https://a2uicatalog.ai/mcp): Live JSON-RPC endpoint, no auth/signup required. GET with `Accept: application/json` returns a machine-readable server descriptor listing every tool.
- [Documentation MCP server](https://a2uicatalog.ai/mcp-docs): A separate MCP identity (`a2uicatalog-docs`) for questions FROM this product's own docs — `search_docs(query)` and `list_docs()`. The product server above takes actions (compose/render/publish); this one only answers doc questions.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add a2uicatalog/a2ui/public/llms.txt@sha256:5d97031340262fac

The 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_rud2c3xfobfxsoo4.svg)](https://markdownregistry.com/a/art_rud2c3xfobfxsoo4)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 24 versions of this file, between Aug 22, 2026 and Oct 29, 2026, about one every 3 days.

versioncommittedcommitsizeaudit
git:20261029.de5febf latest2026-10-29 de5febf 9,370 BA view · diff
git:20261027.64c33d92026-10-27 64c33d9 9,370 BA view · diff
git:20261027.eae08682026-10-27 eae0868 9,370 BA view · diff
git:20261027.d650f112026-10-27 d650f11 9,370 BA view · diff
git:20261027.5b2f0d32026-10-27 5b2f0d3 9,370 BA view · diff
git:20261021.a893d142026-10-21 a893d14 9,370 BA view · diff
git:20261005.4d0e0df2026-10-05 4d0e0df 9,370 BA view · diff
git:20261005.5b697a72026-10-05 5b697a7 9,092 BA view · diff
git:20261005.c0ee6522026-10-05 c0ee652 9,370 BA view · diff
git:20261005.54841612026-10-05 5484161 9,092 BA view · diff
git:20261003.d47566a2026-10-03 d47566a 8,535 BA view · diff
git:20261002.64fcad72026-10-02 64fcad7 8,535 BA view · diff
git:20261001.f1f94622026-10-01 f1f9462 8,210 BA view · diff
git:20260925.cd834652026-09-25 cd83465 8,210 BA view · diff
git:20260922.42f07a72026-09-22 42f07a7 7,961 BA view · diff
git:20260920.eeae6752026-09-20 eeae675 7,961 BA view · diff
git:20260919.02251df2026-09-19 02251df 7,961 BA view · diff
git:20260919.7ad57ae2026-09-19 7ad57ae 7,961 BA view · diff
git:20260914.6bc1e252026-09-14 6bc1e25 7,942 BA view · diff
git:20260905.d6eab012026-09-05 d6eab01 7,940 BA view · diff
git:20260905.28c95832026-09-05 28c9583 7,940 BA view · diff
git:20260829.6e30d8c2026-08-29 6e30d8c 7,896 BA view · diff
git:20260822.53f17e22026-08-22 53f17e2 7,454 BA view · diff
git:20260822.eafd5b72026-08-22 eafd5b7 7,131 BA view

Audit of the latest version

A  14 of 14 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Size between 200 bytes and 200 KB (9370 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

GitHub

a2uicatalog/a2ui · 6 stars · license MIT · pushed 2026-10-30 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_rud2c3xfobfxsoo4
GET https://markdownregistry.com/api/v1/resolve?ref=a2uicatalog/a2ui/public/llms.txt
GET https://markdownregistry.com/api/v1/blob/5d97031340262faca1fb7ef9b4a3ba4348c8ddd9ee8f8d02cb87435baa6fcddf

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: how to add an llms.txt file to a website · which agent file does what.

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