DESIGN.mdA

DESIGN.md from gcrft123/tailr is a DESIGN.md file: the design rules coding agents follow in that repo.

Install it, pinned
mdr add gcrft123/tailr/DESIGN.md@git:20261007.c7f2d63

Pins git:20261007.c7f2d63 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 14 of 14 checks passed
Kind
DESIGN.md file
Repository
gcrft123/tailr
Path
DESIGN.md
Versions recorded
9
Latest version
git:20261007.c7f2d63, committed Oct 7, 2026
First version recorded
Sep 5, 2026
Size
29,986 bytes
Repository stars
7
License
MIT

One small dark object at the corner of someone else's app that changes shape to match its state.

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

# Tailr — Island

## Overview

**One small dark object at the corner of someone else's app, which changes shape to match its state.**

Not a toolbar, not a panel system, not a set of windows that open and close. A single continuous thing that is tiny when there is nothing to say and grows only as far as the current state requires. Everything Tailr needs to tell you happens by that object changing shape.

Three rules:

1. **One object, many shapes.** States are transitions of the same element, never new elements appearing. If something new must be shown, the island morphs to contain it.
2. **Resting size is the design.** Idle is nearly nothing. Every pixel it occupies at rest must be earned.
3. **The page is never touched.** No dimming, tinting, insetting, padding, resizing, or restyling of the host application.

## Colors

`ink` is the object. Near-black, opaque, never translucent or blurred — glass reads as another app's chrome and dissolves over unpredictable content.

`paper` is the committed action. It appears only on the thing you are meant to press: Send, Reload, Undo. One paper element on screen at a time, and its presence means "this is the move."
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add gcrft123/tailr/DESIGN.md@sha256:3d52a19ef7c59ab9

The line at the top of this page pins the label git:20261007.c7f2d63, 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_du6e3xgdiehpjfg5.svg)](https://markdownregistry.com/a/art_du6e3xgdiehpjfg5)

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

Versions

The registry has recorded 9 versions of this file, between Sep 5, 2026 and Oct 7, 2026, about one every 4 days.

versioncommittedcommitsizeaudit
git:20261007.c7f2d63 latest2026-10-07 c7f2d63 29,986 BA view · diff
git:20261007.2c5f1732026-10-07 2c5f173 29,084 BA view · diff
git:20260913.559ea732026-09-13 559ea73 28,076 BA view · diff
git:20260907.6b54c972026-09-07 6b54c97 25,675 BA view · diff
git:20260905.af5235d2026-09-05 af5235d 25,671 BA view · diff
git:20260905.9c2b1de2026-09-05 9c2b1de 23,991 BA view · diff
git:20260905.76e487a2026-09-05 76e487a 22,729 BA view · diff
git:20260905.149c2ff2026-09-05 149c2ff 22,728 BA view · diff
git:20260905.76dfe2b2026-09-05 76dfe2b 18,309 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 (29986 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

gcrft123/tailr · 7 stars · license MIT · pushed 2026-10-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_du6e3xgdiehpjfg5
GET https://markdownregistry.com/api/v1/resolve?ref=gcrft123/tailr/DESIGN.md
GET https://markdownregistry.com/api/v1/blob/3d52a19ef7c59ab937a9900c02347e8ec33f4dc83fab9a4e1882f59d8846d161

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: what DESIGN.md is and how agents use it · which agent file does what.

More from gcrft123/tailr

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review SKILL.md skill
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git:20260907.6b54c97 · audit A · 7 stars
tailr-config SKILL.md skill
gcrft123/tailr · skills/tailr-config/SKILL.md · Read or change the reviewer's Tailr settings — the key they hold to mark, and whether Tailr makes a sound. Invoke with…
git:20260906.4ab2a67 · audit A · 7 stars
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gcrft123/tailr · skills/tailr-review/SKILL.md · The Tailr review loop — wait for the reviewer's batch of visual markup on the running dev server, apply each mark, and…
git:20261006.83acabe · audit A · 7 stars
tailr-start SKILL.md skill
gcrft123/tailr · skills/tailr-start/SKILL.md · Start a Tailr session against the running dev server and begin watching for the reviewer's first batch of visual…
git:20260907.6b54c97 · audit A · 7 stars

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