regex-builder SKILL.md skillB
regex-builder from mathews-tom/armory is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add mathews-tom/armory/regex-builder@v1.1.1Pins v1.1.1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- mathews-tom/armory
- Path
archive/skills/regex-builder/SKILL.md- Versions recorded
- 1
- Latest version
- v1.1.1, committed Oct 13, 2026
- Size
- 7,890 bytes
- Repository stars
- 334
- License
- MIT
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
> **DEPRECATED** — Modern Claude models produce accurate, well-explained regex patterns > with edge-case test suites natively, including multi-language usage examples. The uplift > delta from this skill approaches zero. Retained for archival reference only. # Regex Builder Transforms matching requirements (positive and negative examples) into tested regex patterns with component-by-component explanations, capture group documentation, edge case identification, and ready-to-use code in Python and JavaScript. ## Reference Files | File | Contents | Load When | | ---------------------------------- | --------------------------------------------------------------- | --------------------------- | | `references/character-classes.md` | Character class reference, Unicode categories, POSIX classes | Always | | `references/quantifiers.md` | Quantifier behavior, greedy vs lazy vs possessive, backtracking | Pattern needs repetition | …
Read the whole file at its exact version.
How to install
mdr add mathews-tom/armory/regex-builder@sha256:9061a38bc9019b58The line at the top of this page pins the label v1.1.1, 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_xsv3oc4rv5ml3kbt)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Oct 13, 2026.
Audit of the latest version
- fail: Frontmatter declares a description
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Size between 200 bytes and 200 KB (7890 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
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
mathews-tom/armory · 334 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_xsv3oc4rv5ml3kbt GET https://markdownregistry.com/api/v1/resolve?ref=mathews-tom/armory/regex-builder GET https://markdownregistry.com/api/v1/blob/9061a38bc9019b58f480c8e674344c52c49a1318a03e92508faca24674f8c5a7
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.