roblox-luau-core SKILL.md skillA
roblox-luau-core from tabooharmony/roblox-brain is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add tabooharmony/roblox-brain/roblox-luau-core@git:20261015.62bdabdPins git:20261015.62bdabd in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- tabooharmony/roblox-brain
- Path
skills/core/roblox-luau-core/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261015.62bdabd, committed Oct 15, 2026
- First version recorded
- Sep 23, 2026
- Size
- 3,146 bytes
- Repository stars
- 117
- License
- MIT
Use when writing, editing, or debugging any Luau: tables, control flow, string patterns, scope, closures, and errors ported from JS/Python.
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
# Luau Core Language
## When to Load
Load for Luau semantics and JS/Python translation. Types: `roblox-luau-types`; lifecycle: `roblox-luau-patterns`; engine APIs: domain skills.
## Quick Reference
- Only `false` and `nil` are falsy. `0`, `""`, and `{}` are truthy.
- Equality does not coerce types. `0 == "0"` is false. Inequality is `~=`.
- Array conventions are 1-based. `#array` is meaningful only for a sequence without nil gaps.
- Assigning `nil` removes a table key; assigning a table copies the reference; `table.clone` is shallow.
- Dictionary iteration order is unspecified. Do not make behavior depend on it.
- Dynamic keys require brackets: `record[field]`. Dot syntax uses a literal identifier.
- Missing arguments become `nil`; extra results and arguments can be discarded.
- Prefer an `if` expression over `condition and a or b` when `a` may be falsy.
- Locals start at their declaration; `repeat` locals reach `until`. Forward-declare mutual recursion.
- Luau string patterns are not regular expressions. Their syntax and capabilities differ.
- Backtick interpolation and `..` are valid. Join many fragments once in hot loops.
…Read the whole file at its exact version.
How to install
mdr add tabooharmony/roblox-brain/roblox-luau-core@sha256:c0f9b034dfcd60c5The line at the top of this page pins the label git:20261015.62bdabd, 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_5rmpyjxjz7ra2beo)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Sep 23, 2026 and Oct 15, 2026, about one every 5 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261015.62bdabd latest | 2026-10-15 | 62bdabd | 3,146 B | A | view · diff |
| git:20261015.be33683 | 2026-10-15 | be33683 | 3,155 B | A | view · diff |
| git:20261015.28be409 | 2026-10-15 | 28be409 | 2,986 B | A | view · diff |
| git:20261002.854861b | 2026-10-02 | 854861b | 2,995 B | A | view · diff |
| git:20260923.88a4cf9 | 2026-09-23 | 88a4cf9 | 2,989 B | A | 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 (3146 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
tabooharmony/roblox-brain · 117 stars · license MIT · pushed 2026-10-15 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_5rmpyjxjz7ra2beo GET https://markdownregistry.com/api/v1/resolve?ref=tabooharmony/roblox-brain/roblox-luau-core GET https://markdownregistry.com/api/v1/blob/c0f9b034dfcd60c5ed74894945ea76f197d59eb1c7a3ee90128199b0b08403aa
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.