Home / open-dev-society / kitbash · GitHub

kitbash SKILL.md skillA

kitbash from open-dev-society/kitbash is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add open-dev-society/kitbash/kitbash@git:20260912.41cd2f8

Pins git:20260912.41cd2f8 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
open-dev-society/kitbash
Path
skills/kitbash/SKILL.md
Versions recorded
4
Latest version
git:20260912.41cd2f8, committed Sep 12, 2026
First version recorded
Sep 11, 2026
Size
15,990 bytes
Repository stars
56
License
GPL-2.0

Decide what to borrow, adapt, or write before building something. Use when the user describes an app, tool, CLI, or feature they want to build and needs to know which parts already exist as open-source GitHub repos (BORROW), which are worth reading and adapting (KITBASH), and which to just write (WRITE). Every repository named is checked against the live GitHub API, so invented ones never reach the user.

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

<!-- Generated by `npm run skill` from src/rubric.ts. Edit the rubric, not this file. -->

# Kitbash

Most of what someone is about to build already exists. This skill breaks an idea into
components, gives each one a verdict — **BORROW**, **KITBASH**, or **WRITE** — and checks
every repository it names against the live GitHub API, so the invented ones are gone
before the user sees the answer.

## When to Use This Skill

Use this skill when the user:

- Describes an app, tool, CLI, or feature they want to build
- Asks "is there a library for this" or "should I use a package or write it myself"
- Is about to hand-roll something in a domain where correctness was hard-won (PDF parsing, timezone math, OAuth, codecs, Unicode, crypto)
- Wants a build plan that names real, maintained dependencies instead of plausible-sounding ones
- Asks which parts of a project are worth writing themselves

## The Three Verdicts

| Verdict | Meaning |
| --- | --- |
| **BORROW** | A maintained library exists and the correctness was hard-won. Rewriting it is the mistake — take the dependency. |
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add open-dev-society/kitbash/kitbash@sha256:920746e9028ec28e

The line at the top of this page pins the label git:20260912.41cd2f8, 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_7fdigb6cy6bt33cg.svg)](https://markdownregistry.com/a/art_7fdigb6cy6bt33cg)

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

Versions

The registry has recorded 4 versions of this file, between Sep 11, 2026 and Sep 12, 2026, more than one a day.

versioncommittedcommitsizeaudit
git:20260912.41cd2f8 latest2026-09-12 41cd2f8 15,990 BA view · diff
git:20260912.673d2282026-09-12 673d228 15,097 BA view · diff
git:20260911.0796fe32026-09-11 0796fe3 13,413 BA view · diff
git:20260911.bc0b3c72026-09-11 bc0b3c7 13,393 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 (15990 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

open-dev-society/kitbash · 56 stars · license GPL-2.0 · pushed 2026-11-01 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_7fdigb6cy6bt33cg
GET https://markdownregistry.com/api/v1/resolve?ref=open-dev-society/kitbash/kitbash
GET https://markdownregistry.com/api/v1/blob/920746e9028ec28e0f8c1c1494d27c0879ba0dd22533443dfd9e2a9a46bb581c

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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