d2-diagram SKILL.md skillB
d2-diagram from mizchi/explainer is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add mizchi/explainer/d2-diagram@git:20261006.fb5b169Pins git:20261006.fb5b169 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- mizchi/explainer
- Path
skills/d2-diagram/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261006.fb5b169, committed Oct 6, 2026
- First version recorded
- Oct 2, 2026
- Size
- 26,370 bytes
- Repository stars
- 452
- License
- MIT
Draw a software architecture, system, data-model or call-flow diagram as D2 text laid out by TALA (D2's whiteboard-style engine, open source since D2 0.9), look at it in the terminal before anyone opens an image, and check that the picture says what it claims — `d2 --layout=tala x.d2 x.txt` renders the layout as Unicode box drawing, `--ascii-mode standard` as plain ASCII for a README, and `assets/d2-facts.mjs` reads the drawn boxes and arrows back out of the render and holds them to a fact…
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
# d2-diagram
Paths below: `<skill>` is this skill's directory and `<skills>` the directory the skills are
installed in (`skills/` in mizchi/explainer, `.claude/skills/` in a project that installed them).
A D2 file is the diagram; the picture is a render of it. The writer's job is the
text — ids, labels, containers, connections — and TALA's job is where the boxes
go and how the lines bend. The terminal render exists so the writer reads the
picture on every round without leaving the shell, and so the diagram can live in
a README code block, a PR comment, or a `--help` text.
```d2
direction: right
web: Web frontend
api: API server
db: PostgreSQL {shape: cylinder}
web -> api: HTTPS
api -> db: SQL
```
```
.-‾‾‾‾‾‾-.
│╲-______-╱│
HTTPS SQL │ │
┌─────────────┐──────────────▶┌───────────┐─────────────▶│ │
│Web frontend │ │API server │ │PostgreSQL│
│ │ │ │ │ │
…Read the whole file at its exact version.
How to install
mdr add mizchi/explainer/d2-diagram@sha256:05df931fb5898b19The line at the top of this page pins the label git:20261006.fb5b169, 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_vhhaa76fmszkfyjc)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Oct 2, 2026 and Oct 6, 2026, about one every 2 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261006.fb5b169 latest | 2026-10-06 | fb5b169 | 26,370 B | B | view · diff |
| git:20261003.092c173 | 2026-10-03 | 092c173 | 26,365 B | B | view · diff |
| git:20261002.50abac3 | 2026-10-02 | 50abac3 | 26,410 B | B | view |
Audit of the latest version
- fail: No curl or wget piped into a shell (matched: curl -fsSL https://d2lang.com/install.sh | sh)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (26370 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 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
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
mizchi/explainer · 452 stars · license MIT · pushed 2026-10-10 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_vhhaa76fmszkfyjc GET https://markdownregistry.com/api/v1/resolve?ref=mizchi/explainer/d2-diagram GET https://markdownregistry.com/api/v1/blob/05df931fb5898b19cb48010f5b81e351710f2b4bd34ca5ae37d79a878aa5ad51
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.