check-syntax SKILL.md skillA

check-syntax from mendixlabs/mxcli is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add mendixlabs/mxcli/check-syntax@git:20261103.5b052c3

Pins git:20261103.5b052c3 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
mendixlabs/mxcli
Path
.claude/skills/mendix/check-syntax/SKILL.md
Versions recorded
23
Latest version
git:20261103.5b052c3, committed Nov 3, 2026
First version recorded
Sep 5, 2026
Size
32,202 bytes
Repository stars
137
License
Apache-2.0

Validate MDL with `mxcli check` before presenting or executing it, including reference resolution against a project. Use ALWAYS before showing MDL to a user, running `mxcli exec`, or committing a .mdl file — exec refuses exactly what check rejects.

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-index: generated by scripts/skill-index.py; make check-skill-index -->
## Find it fast

`sed -n '<from>,<to>p' SKILL.md` one section rather than reading the file;
`./mxcli syntax <topic>` answers *how do I write this* for a fraction of either.

| lines | section |
|---|---|
| 29-35 | When to Use This Skill |
| 36-295 | `exec` refuses what `check` rejects |
| 296-431 | Pre-Flight Validation Checklist |
| 432-467 | Two rules that only real validation used to catch |
| 468-514 | Validation Workflow |
| 515-536 | Script Execution Behavior |
| 537-597 | Script Organization |
| 598-659 | Troubleshooting Parse Errors |
| 660-667 | Studio Pro MCP — Verification Only |
| 668-673 | Related Skills |

<!-- /skill-index -->
# MDL Syntax Validation Skill

This skill ensures MDL scripts are validated before presenting them to users or executing them.

## When to Use This Skill

**ALWAYS** use this skill before:
- Presenting MDL code to users
- Executing MDL scripts via `mxcli exec`
- Committing MDL files to version control

## `exec` refuses what `check` rejects

`mxcli exec` runs the same semantic checks before writing anything. A script whose
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add mendixlabs/mxcli/check-syntax@sha256:a260c5e04a614dc3

The line at the top of this page pins the label git:20261103.5b052c3, 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_vwwle2tf4tm3px2k.svg)](https://markdownregistry.com/a/art_vwwle2tf4tm3px2k)

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

Versions

The registry has recorded 23 versions of this file, between Sep 5, 2026 and Nov 3, 2026, about one every 3 days.

versioncommittedcommitsizeaudit
git:20261103.5b052c3 latest2026-11-03 5b052c3 32,202 BA view · diff
git:20261030.07a869a2026-10-30 07a869a 34,584 BA view · diff
git:20261030.efc539e2026-10-30 efc539e 34,436 BA view · diff
git:20261021.ff2eeb02026-10-21 ff2eeb0 34,084 BA view · diff
git:20261015.b6476ab2026-10-15 b6476ab 34,074 BA view · diff
git:20261015.42f827f2026-10-15 42f827f 34,901 BA view · diff
git:20261014.6a68c8b2026-10-14 6a68c8b 34,846 BA view · diff
git:20261014.a1025e02026-10-14 a1025e0 35,367 BA view · diff
git:20261013.f53041b2026-10-13 f53041b 34,715 BA view · diff
git:20261009.1f2841c2026-10-09 1f2841c 33,808 BA view · diff
git:20261002.f59c4da2026-10-02 f59c4da 33,786 BA view · diff
git:20261002.4600dd62026-10-02 4600dd6 33,084 BA view · diff
git:20261002.6798b652026-10-02 6798b65 32,394 BA view · diff
git:20261002.08568742026-10-02 0856874 31,692 BA view · diff
git:20261001.d20c47a2026-10-01 d20c47a 31,021 BA view · diff
git:20260925.1984c9c2026-09-25 1984c9c 28,880 BA view · diff
git:20260925.864440d2026-09-25 864440d 28,597 BA view · diff
git:20260921.71851f72026-09-21 71851f7 27,962 BA view · diff
git:20260909.45d8ff52026-09-09 45d8ff5 25,524 BA view · diff
git:20260907.dbe5cc22026-09-07 dbe5cc2 25,227 BA view · diff
git:20260906.cbe698a2026-09-06 cbe698a 23,866 BA view · diff
git:20260905.42fb3082026-09-05 42fb308 22,774 BA view · diff
git:20260905.3aa2ee02026-09-05 3aa2ee0 21,789 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 (32202 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

mendixlabs/mxcli · 137 stars · license Apache-2.0 · pushed 2026-11-07 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_vwwle2tf4tm3px2k
GET https://markdownregistry.com/api/v1/resolve?ref=mendixlabs/mxcli/check-syntax
GET https://markdownregistry.com/api/v1/blob/a260c5e04a614dc354c270a88e4d81dca637bd10c46bfe689629aa4de99af75b

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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