regular-expressions SKILL.md skillA
regular-expressions from mendixlabs/mxcli is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add mendixlabs/mxcli/regular-expressions@git:20261010.50fe33aPins git:20261010.50fe33a 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/regular-expressions/SKILL.md- Versions recorded
- 8
- Latest version
- git:20261010.50fe33a, committed Oct 10, 2026
- First version recorded
- Aug 21, 2026
- Size
- 7,310 bytes
- Repository stars
- 137
- License
- Apache-2.0
Create and manage named regular-expression documents and bind them to attribute validation rules. Use when adding an email, phone or identifier pattern, changing a shared pattern, or working out why a regex cannot attach directly to an attribute.
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 | |---|---| | 26-32 | When to Use This Skill | | 33-58 | What a Mendix regular expression is | | 59-68 | Writing the pattern | | 69-83 | Go cannot check every legal pattern | | 84-142 | Binding a regex to an attribute | | 143-155 | Finding out who uses one | | 156-167 | Common Mistakes | | 168-173 | Related | | 174-176 | Regular expressions (LIST/DESCRIBE/CREATE [OR MODIFY]/DROP REGULAR EXPRESSION) | <!-- /skill-index --> # Regular Expressions ## When to Use This Skill Use this skill when the user wants to: - Add a named validation pattern (email, phone, identifier, postcode) - See or change the regexes a project already has - Understand why a regex cannot be attached to an attribute from MDL ## What a Mendix regular expression is A **document**, not a string on a rule. An attribute validation rule stores a reference to it by qualified name, so one pattern is shared by every attribute …
Read the whole file at its exact version.
How to install
mdr add mendixlabs/mxcli/regular-expressions@sha256:df6ac4083ead3828The line at the top of this page pins the label git:20261010.50fe33a, 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_lscibpuut7hg44rt)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 8 versions of this file, between Aug 21, 2026 and Oct 10, 2026, about one every 7 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261010.50fe33a latest | 2026-10-10 | 50fe33a | 7,310 B | A | view · diff |
| git:20261002.d5c2a5d | 2026-10-02 | d5c2a5d | 6,610 B | A | view · diff |
| git:20261001.3a9ec83 | 2026-10-01 | 3a9ec83 | 6,555 B | A | view · diff |
| git:20260928.3daab1c | 2026-09-28 | 3daab1c | 6,528 B | A | view · diff |
| git:20260928.230fab5 | 2026-09-28 | 230fab5 | 6,528 B | A | view · diff |
| git:20260928.9b2abb5 | 2026-09-28 | 9b2abb5 | 6,527 B | A | view · diff |
| git:20260922.4954f84 | 2026-09-22 | 4954f84 | 6,496 B | A | view · diff |
| git:20260821.ff81a24 | 2026-08-21 | ff81a24 | 5,584 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 (7310 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
mendixlabs/mxcli · 137 stars · license Apache-2.0 · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_lscibpuut7hg44rt GET https://markdownregistry.com/api/v1/resolve?ref=mendixlabs/mxcli/regular-expressions GET https://markdownregistry.com/api/v1/blob/df6ac4083ead38286404a40db7c303ecf26915573dc0d315d3f3ea1dc7add811
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.