rigc SKILL.md skillA

rigc from firejune/rigc is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add firejune/rigc/rigc@git:20261014.844d2a1

Pins git:20261014.844d2a1 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
firejune/rigc
Path
skills/rigc/SKILL.md
Versions recorded
16
Latest version
git:20261014.844d2a1, committed Oct 14, 2026
First version recorded
Sep 24, 2026
Size
10,447 bytes
Repository stars
17
License
a license file GitHub does not identify

Author, build and validate Spine 4.3 skeleton data (skeleton.json plus its .atlas) from loose part PNGs with rigc, the rig compiler that verifies its own output with named assertions before writing it. Use for any request to make a Spine rig or Spine animation from PNG parts, or where the source is a Live2D, Unity or video model whose pictures you can render, to run or read rigc build, validate, render, preview, check or vote, or to write or fix a *.rig.json or *.motion.json spec; it says…

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

# rigc — a rig compiler for agents

rigc compiles a rig spec and a motion spec into Spine 4.3 skeleton data and an
atlas, runs its named assertions — rigc's own validator in the published package,
held to a `@esotericsoftware/spine-core` round trip's verdicts in its CI, all but
the parse itself — and writes **only if every one is green**. You cannot see the
rig you are authoring. The validator's messages and the shipped guides are the
whole interface, and this skill only says which of them to open.

📖 **A failure line ends with the command that prints its row of the guide** —
` (see rigc guide <RULE>)`. Run that command first, before reading anything else:
it prints that rule's row of the shipped guide and nothing else. `rigc guide §<n>`
(and `§<n>.<m>`, `§<n>.<m>.<k>`) prints the section's heading, own prose and
subsection index from `docs/AUTHORING.md`; add `--all` to include subsection
bodies. A leaf prints its full text either way. Sizes describe full ledger spans;
`--all` with a rule name is refused, exit 2. A compile error points at its stable
`CE_` code row. `rigc guide §5.1.<k>` prints a numbered compile-error group of
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add firejune/rigc/rigc@sha256:2618be81ee035e74

The line at the top of this page pins the label git:20261014.844d2a1, 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_rhb7vy6j67k24qnu.svg)](https://markdownregistry.com/a/art_rhb7vy6j67k24qnu)

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

Versions

The registry has recorded 16 versions of this file, between Sep 24, 2026 and Oct 14, 2026, about one every day.

versioncommittedcommitsizeaudit
git:20261014.844d2a1 latest2026-10-14 844d2a1 10,447 BA view · diff
git:20261014.91a13422026-10-14 91a1342 10,168 BA view · diff
git:20261014.cef502f2026-10-14 cef502f 10,005 BA view · diff
git:20261013.907e8202026-10-13 907e820 9,738 BA view · diff
git:20261011.9b188012026-10-11 9b18801 9,368 BA view · diff
git:20261011.f2bd9392026-10-11 f2bd939 9,006 BA view · diff
git:20261008.c5f99722026-10-08 c5f9972 9,030 BA view · diff
git:20261005.223f2852026-10-05 223f285 9,065 BA view · diff
git:20261005.554bb902026-10-05 554bb90 8,820 BA view · diff
git:20261002.627ff8c2026-10-02 627ff8c 8,445 BA view · diff
git:20261002.16bf9fa2026-10-02 16bf9fa 8,037 BA view · diff
git:20260926.ee248512026-09-26 ee24851 7,807 BA view · diff
git:20260925.c8cb0bc2026-09-25 c8cb0bc 7,132 BA view · diff
git:20260925.e2abb952026-09-25 e2abb95 5,607 BA view · diff
git:20260925.f84eae42026-09-25 f84eae4 5,520 BA view · diff
git:20260924.4fdf6502026-09-24 4fdf650 5,344 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (10447 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

firejune/rigc · 17 stars · license a license file GitHub does not identify · pushed 2026-10-22 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_rhb7vy6j67k24qnu
GET https://markdownregistry.com/api/v1/resolve?ref=firejune/rigc/rigc
GET https://markdownregistry.com/api/v1/blob/2618be81ee035e74e1a18f35e65fb34951d850265cb7bf6ca040b73adc559e38

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.

More from firejune/rigc

AGENTS.md AGENTS.md file
firejune/rigc · AGENTS.md
git:20260924.4fdf650 · audit B · 17 stars
CLAUDE.md CLAUDE.md file
firejune/rigc · CLAUDE.md
git:20261021.c96d49d · audit A · 17 stars
rigc-face SKILL.md skill
firejune/rigc · skills/rigc-face/SKILL.md · Author a face on plain Spine data with rigc — a blink, a gaze shift, a breathing portrait and a head turn a few degrees…
git:20261014.844d2a1 · audit A · 17 stars
rigc-ingest SKILL.md skill
firejune/rigc · skills/rigc-ingest/SKILL.md · Work with a Spine skeleton.json somebody else authored — exported from the Spine editor or another tool — using rigc…
git:20261014.844d2a1 · audit A · 17 stars
rigc-motion SKILL.md skill
firejune/rigc · skills/rigc-motion/SKILL.md · Author a Spine animation with rigc from key poses — an idle, a loop, a move from one picture to another — with timing…
git:20261014.844d2a1 · audit A · 17 stars
rigc-rigging SKILL.md skill
firejune/rigc · skills/rigc-rigging/SKILL.md · Decide a Spine rig's hierarchy with rigc — how many bones, where each pivot sits, what hangs off what, offsets, chains…
git:20261014.844d2a1 · audit A · 17 stars

Every file in firejune/rigc

Other files named rigc

rigc SKILL.md skill
rig-c/core · skills/rigc/SKILL.md · Author, build and validate Spine 4.3 skeleton data (skeleton.json plus its .atlas) from loose part PNGs with rigc, the…
git:20261014.844d2a1 · audit A · 15 stars

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