skill-builder SKILL.md skillA

skill-builder from anton-abyzov/vskill is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add anton-abyzov/vskill/skill-builder@v1.0.5

Pins v1.0.5 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
anton-abyzov/vskill
Path
plugins/skills/skills/skill-builder/SKILL.md
Versions recorded
5
Latest version
v1.0.5, committed Jun 2, 2026
First version recorded
Apr 24, 2026
Size
8,820 bytes
Repository stars
48
License
MIT

Meta-skill for creating new skills from natural language. Trigger phrases: "new skill", "create a skill", "build a skill", "make a skill", "generate a skill", "author a skill", "skill builder".

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-builder

Author new universal skills from natural-language prompts across any agent
host (Claude Code, Cursor, Codex, Gemini CLI, Windsurf, OpenCode, and the
rest of the 50+ agents in the vskill registry).

## What this skill does

`skill-builder` is a cross-tool authoring meta-skill. When the host agent
sees a trigger phrase (see frontmatter `description`), this skill takes
over and produces a new SKILL.md — emitted for every target agent, not
just the one currently invoking it. The emitted skills carry an
`x-sw-schema-version: 1` marker so future tooling can evolve the format
without breaking older installs.

It does this by delegating to the real generator via a three-path
fallback chain:

- **Path A — `vskill skill` CLI** (preferred). The CLI owns the full
  authoring pipeline: prompt parsing, target-agent lowering, divergence
  report, security scan, and disk write.
- **Path B — vskill Studio (browser)**. When the CLI is not on PATH but
  the npm package is present (e.g. a project-local install), start the
  eval server and walk the user through the Studio UI.
- **Path C — Anthropic `skill-creator`** (Claude Code only fallback).
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add anton-abyzov/vskill/skill-builder@sha256:4f4c4e6f94b40242

The line at the top of this page pins the label v1.0.5, 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_ubxfw32lg5p4dsx3.svg)](https://markdownregistry.com/a/art_ubxfw32lg5p4dsx3)

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

Versions

The registry has recorded 5 versions of this file, between Apr 24, 2026 and Jun 2, 2026, about one every 10 days.

versioncommittedcommitsizeaudit
v1.0.5 latest2026-06-02 33a80bf 8,820 BA view · diff
v1.0.42026-04-27 602f22a 8,805 BA view · diff
v1.0.32026-04-27 bef2915 6,703 BA view · diff
v0.1.02026-04-25 4410846 6,703 BA view · diff
v0.1.02026-04-24 568e163 6,687 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 (8820 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

anton-abyzov/vskill · 48 stars · license MIT · pushed 2026-10-21 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_ubxfw32lg5p4dsx3
GET https://markdownregistry.com/api/v1/resolve?ref=anton-abyzov/vskill/skill-builder
GET https://markdownregistry.com/api/v1/blob/4f4c4e6f94b4024252ca3f7e571f7736fe7b66eab1ef5e894f9edb309328e49c

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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