Skill Development SKILL.md skillA
Skill Development from nxtg-ai/forge-plugin is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add nxtg-ai/forge-plugin/Skill Development@git:20261007.7682d9bPins git:20261007.7682d9b in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- nxtg-ai/forge-plugin
- Path
plugins/nxtg-forge/skills/skill-development/SKILL.md- Versions recorded
- 4
- Latest version
- git:20261007.7682d9b, committed Oct 7, 2026
- First version recorded
- Feb 7, 2026
- Size
- 8,572 bytes
- Repository stars
- 6
- License
- MIT
How to author a Claude Code Agent Skill — SKILL.md structure, routing-optimized descriptions, progressive disclosure, valid frontmatter fields, bundling scripts/reference files. Use when creating a new skill, writing or fixing a SKILL.md, deciding what belongs in frontmatter, splitting an oversized skill into reference files, or debugging why a skill never triggers.
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
# Skill Development Procedure for authoring Claude Code Agent Skills. A skill is a directory with a `SKILL.md` file; optional bundled scripts and reference `.md` files sit beside it and load only when needed. ## What a skill is (one paragraph) At startup Claude preloads only the `name` + `description` of every installed skill into its system prompt. When a task matches, Claude reads the full `SKILL.md` body into context. Bundled files (`reference/*.md`, `scripts/*`) are read only when the body points to them. This is **progressive disclosure**: metadata → body → bundled files. Design each level to be the smallest thing that lets Claude decide whether to go deeper. ## Build workflow 1. **Start from a real gap.** Author a skill only for a capability Claude currently fumbles — a workflow it gets wrong, procedural knowledge it lacks, org context it can't infer. Don't pre-write skills for hypothetical tasks. 2. **Create the directory + SKILL.md.** `skills/<kebab-name>/SKILL.md`. Directory name is the on-disk identity — don't rename it after wiring. …
Read the whole file at its exact version.
How to install
mdr add nxtg-ai/forge-plugin/Skill Development@sha256:46bec89ee4dcfb2aThe line at the top of this page pins the label git:20261007.7682d9b, 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_zur4ofmle2lg5hnx)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Feb 7, 2026 and Oct 7, 2026, about one every 81 days. Its first recorded version is graded F and its latest A.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261007.7682d9b latest | 2026-10-07 | 7682d9b | 8,572 B | A | view · diff |
| git:20260714.4fd0952 | 2026-07-14 | 4fd0952 | 8,552 B | A | view · diff |
| git:20260714.061716b | 2026-07-14 | 061716b | 15,060 B | F | view · diff |
| git:20260207.88c1f6e | 2026-02-07 | 88c1f6e | 15,029 B | F | 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 (8572 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
nxtg-ai/forge-plugin · 6 stars · license MIT · pushed 2026-10-15 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_zur4ofmle2lg5hnx GET https://markdownregistry.com/api/v1/resolve?ref=nxtg-ai/forge-plugin/Skill Development GET https://markdownregistry.com/api/v1/blob/46bec89ee4dcfb2a795f5686136fff56948d210d10fa1cae128071508c677941
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.
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