Regex Expert
RightNow-AI/openfang
Regular expression expert for crafting, debugging, and explaining patterns
Build and test a regular expression from examples of strings that should and should not match.
MITAuto-check passed
Install Regex Helper
$ npx skills add zhuyansen/agent-skills-hub --skill regex-helper -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install zhuyansen/agent-skills-hub regex-helper --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/zhuyansen/agent-skills-hub.git skills-src && mkdir -p .claude/skills && cp -r skills-src/ops/skillmgr-runs/in/input/library/regex-helper .claude/skills/regex-helper && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "regex-helper" agent skill from https://github.com/zhuyansen/agent-skills-hub/tree/main/ops/skillmgr-runs/in/input/library/regex-helper into .claude/skills/regex-helper/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "regex-helper", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/zhuyansen/agent-skills-hub/tree/main/ops/skillmgr-runs/in/input/library/regex-helperType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add zhuyansen/agent-skills-hub --skill regex-helper -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install zhuyansen/agent-skills-hub regex-helper --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/zhuyansen/agent-skills-hub.git skills-src && mkdir -p .agents/skills && cp -r skills-src/ops/skillmgr-runs/in/input/library/regex-helper .agents/skills/regex-helper && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "regex-helper" agent skill from https://github.com/zhuyansen/agent-skills-hub/tree/main/ops/skillmgr-runs/in/input/library/regex-helper into .agents/skills/regex-helper/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "regex-helper", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add zhuyansen/agent-skills-hub --skill regex-helper -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install zhuyansen/agent-skills-hub regex-helper --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/zhuyansen/agent-skills-hub.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/ops/skillmgr-runs/in/input/library/regex-helper .cursor/skills/regex-helper && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "regex-helper" agent skill from https://github.com/zhuyansen/agent-skills-hub/tree/main/ops/skillmgr-runs/in/input/library/regex-helper into .cursor/skills/regex-helper/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "regex-helper", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/zhuyansen/agent-skills-hub.git --path ops/skillmgr-runs/in/input/library/regex-helper--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add zhuyansen/agent-skills-hub --skill regex-helper -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install zhuyansen/agent-skills-hub regex-helper --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/zhuyansen/agent-skills-hub.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/ops/skillmgr-runs/in/input/library/regex-helper .gemini/skills/regex-helper && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "regex-helper" agent skill from https://github.com/zhuyansen/agent-skills-hub/tree/main/ops/skillmgr-runs/in/input/library/regex-helper into .gemini/skills/regex-helper/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "regex-helper", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install zhuyansen/agent-skills-hub regex-helperInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add zhuyansen/agent-skills-hub --skill regex-helper -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/zhuyansen/agent-skills-hub.git skills-src && mkdir -p .github/skills && cp -r skills-src/ops/skillmgr-runs/in/input/library/regex-helper .github/skills/regex-helper && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "regex-helper" agent skill from https://github.com/zhuyansen/agent-skills-hub/tree/main/ops/skillmgr-runs/in/input/library/regex-helper into .github/skills/regex-helper/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "regex-helper", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add zhuyansen/agent-skills-hub --skill regex-helper -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install zhuyansen/agent-skills-hub regex-helper --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/zhuyansen/agent-skills-hub.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/ops/skillmgr-runs/in/input/library/regex-helper .opencode/skills/regex-helper && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "regex-helper" agent skill from https://github.com/zhuyansen/agent-skills-hub/tree/main/ops/skillmgr-runs/in/input/library/regex-helper into .opencode/skills/regex-helper/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "regex-helper", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
regex-helper- GitHub stars
- 413
- Token cost
- ~192 tokens
- SKILL.md length
- 116 words
- Files
- 1
- Skills in repo
- 21
- Repo updated
- First seen
- Licence
- MIT
At a glance
Build and test a regular expression from examples of strings that should and should not match.
- Works in 3 steps: Read the input the user points to. If… → Do the task described above, step by… → Show the result, then a short list of…
- SKILL.md covers When to use, Steps and Notes
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Regex Helper is an agent skill from zhuyansen/agent-skills-hub. Build and test a regular expression from examples of strings that should and should not match.
Its SKILL.md is about 190 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
The repository describes itself as: Discover and compare open-source Agent Skills, tools & MCP servers — with quality scoring, trending analysis, and automated GitHub sync. The licence is MIT.
Example prompts
- “/regex-helper”
Workflow steps
3 steps, taken from the first numbered list in SKILL.md.
- Read the input the user points to. If none is given, ask for the file or text.
- Do the task described above, step by step, and keep the user's own wording where it matters.
- Show the result, then a short list of what you changed or found, so the user can check it.
What it can do on your machine
Read from SKILL.md and the folder at commit 2862275. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Regex Helper loads about 192 tokens when it runs. Until then it costs about 27 tokens; SKILL.md has 116 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from zhuyansen/agent-skills-hub at commit 2862275, republished under its MIT licence (© zhuyansen). 116 words, ~192 tokens.
Download SKILL.mdSave it as
.claude/skills/regex-helper/SKILL.md (or your agent's skills folder).- name
- regex-helper
- description
- Build and test a regular expression from examples of strings that should and should not match.
Regex Helper
Build and test a regular expression from examples of strings that should and should not match.
When to use
Use this skill when the user asks for it by name or describes this task. Do not use it for unrelated work.
Steps
- Read the input the user points to. If none is given, ask for the file or text.
- Do the task described above, step by step, and keep the user's own wording where it matters.
- Show the result, then a short list of what you changed or found, so the user can check it.
Notes
- Keep changes small and reversible.
- Say plainly when the input is incomplete instead of guessing.
© zhuyansen, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in ops/skillmgr-runs/in/input/library/regex-helper of zhuyansen/agent-skills-hub.
Open the folder on GitHubat commit 2862275
Compare with similar skills
Regex Helper next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Regex Helper this skillzhuyansen/agent-skills-hub | 413 | — | ~192 | Automated safety check: Pass | MIT | |
| Regex ExpertRightNow-AI/openfang | 18k | — | ~792 | Automated safety check: Pass | Apache-2.0 | |
| Regex Vs LLM Structured Textaffaan-m/ECC | 276k | 5 repos | ~1.7k | Automated safety check: Pass | MIT | |
| Translation Stringsthedaviddias/Front-End-Checklist | 74k | — | ~494 | Automated safety check: Pass | MIT | |
| String Databasedavila7/claude-code-templates | 33k | 10 repos | ~4.5k | Automated safety check: Pass | MIT | |
| Regular Expressionsmendixlabs/mxcli | 129 | — | ~1.6k | Automated safety check: Pass | Apache-2.0 |
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Decision framework for parsing structured text (quizzes, forms, invoices, receipts, tables) with a hybrid regex-first pipeline — regex extraction handles 95%+ cheaply, a confidence scorer flags…
Translation Strings
thedaviddias/Front-End-Checklist
A skill your agent uses when reviewing a codebase for internationalisation readiness, setting up an i18n library, or preparing strings for a new locale.
String Database
davila7/claude-code-templates
Query STRING API for protein-protein interactions (59M proteins, 20B interactions).
Regular Expressions
mendixlabs/mxcli
Create and manage named regular-expression documents and bind them to attribute validation rules.
- Official
React18 String Refs
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Questions about Regex Helper
What does Regex Helper do?
Build and test a regular expression from examples of strings that should and should not match. Regex Helper is an agent skill from zhuyansen/agent-skills-hub. Build and test a regular expression from examples of strings that should and should not match.
How do I install Regex Helper in Claude Code?
Run `npx skills add zhuyansen/agent-skills-hub --skill regex-helper -a claude-code`. Or copy the skill folder (ops/skillmgr-runs/in/input/library/regex-helper in zhuyansen/agent-skills-hub) into .claude/skills/regex-helper in your project. Claude Code loads it when a task matches its description.
How do I install Regex Helper in Codex?
Run `npx skills add zhuyansen/agent-skills-hub --skill regex-helper -a codex`. Or copy the skill folder (ops/skillmgr-runs/in/input/library/regex-helper in zhuyansen/agent-skills-hub) into .agents/skills/regex-helper in your project. Codex loads it when a task matches its description.
Can I use Regex Helper in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add zhuyansen/agent-skills-hub --skill regex-helper -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/regex-helper, .gemini/skills/regex-helper, .github/skills/regex-helper and .opencode/skills/regex-helper in your project.
What does Regex Helper need to run?
SKILL.md names no scripts, command-line tools or credentials: Regex Helper is instructions for the agent only.
Does Regex Helper access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Regex Helper safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Regex Helper use?
Regex Helper is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Regex Helper use?
About 192 tokens (SKILL.md is roughly 768 characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Regex Helper?
Skills that share tags, products or a category with Regex Helper: Regex Expert (RightNow-AI/openfang, 18k stars), Regex Vs LLM Structured Text (affaan-m/ECC, 276k stars), Translation Strings (thedaviddias/Front-End-Checklist, 74k stars) and String Database (davila7/claude-code-templates, 33k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Regex Helper?
zhuyansen (a GitHub user) maintains it in zhuyansen/agent-skills-hub, which has 413 GitHub stars. The repository holds 21 skills in this directory. The repository was last updated on October 10, 2026.
Source: zhuyansen/agent-skills-hub on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.