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Conventions for validating PrairieLearn Express request parameters, query strings, bodies, and action forms with Zod.
Install Express Request Validation
$ npx skills add PrairieLearn/PrairieLearn --skill express-request-validation -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install PrairieLearn/PrairieLearn express-request-validation --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/PrairieLearn/PrairieLearn.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/express-request-validation .claude/skills/express-request-validation && 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 "express-request-validation" agent skill from https://github.com/PrairieLearn/PrairieLearn/tree/master/.agents/skills/express-request-validation into .claude/skills/express-request-validation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "express-request-validation", 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/PrairieLearn/PrairieLearn/tree/master/.agents/skills/express-request-validationType 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 PrairieLearn/PrairieLearn --skill express-request-validation -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install PrairieLearn/PrairieLearn express-request-validation --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/PrairieLearn/PrairieLearn.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/express-request-validation .agents/skills/express-request-validation && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "express-request-validation" agent skill from https://github.com/PrairieLearn/PrairieLearn/tree/master/.agents/skills/express-request-validation into .agents/skills/express-request-validation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "express-request-validation", 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 PrairieLearn/PrairieLearn --skill express-request-validation -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install PrairieLearn/PrairieLearn express-request-validation --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/PrairieLearn/PrairieLearn.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/express-request-validation .cursor/skills/express-request-validation && 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 "express-request-validation" agent skill from https://github.com/PrairieLearn/PrairieLearn/tree/master/.agents/skills/express-request-validation into .cursor/skills/express-request-validation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "express-request-validation", 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/PrairieLearn/PrairieLearn.git --path .agents/skills/express-request-validation--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 PrairieLearn/PrairieLearn --skill express-request-validation -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install PrairieLearn/PrairieLearn express-request-validation --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/PrairieLearn/PrairieLearn.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/express-request-validation .gemini/skills/express-request-validation && 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 "express-request-validation" agent skill from https://github.com/PrairieLearn/PrairieLearn/tree/master/.agents/skills/express-request-validation into .gemini/skills/express-request-validation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "express-request-validation", 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 PrairieLearn/PrairieLearn express-request-validationInstalls 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 PrairieLearn/PrairieLearn --skill express-request-validation -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/PrairieLearn/PrairieLearn.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/express-request-validation .github/skills/express-request-validation && 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 "express-request-validation" agent skill from https://github.com/PrairieLearn/PrairieLearn/tree/master/.agents/skills/express-request-validation into .github/skills/express-request-validation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "express-request-validation", 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 PrairieLearn/PrairieLearn --skill express-request-validation -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install PrairieLearn/PrairieLearn express-request-validation --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/PrairieLearn/PrairieLearn.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/express-request-validation .opencode/skills/express-request-validation && 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 "express-request-validation" agent skill from https://github.com/PrairieLearn/PrairieLearn/tree/master/.agents/skills/express-request-validation into .opencode/skills/express-request-validation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "express-request-validation", 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
express-request-validation- GitHub stars
- 512
- Token cost
- ~851 tokens
- SKILL.md length
- 373 words
- Files
- 1
- Skills in repo
- 7
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Conventions for validating PrairieLearn Express request parameters, query strings, bodies, and action forms with Zod.
- Tasks that involve Forms and validation
- SKILL.md covers Request boundaries, Schema naming, __action forms and Example
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Express Request Validation is an agent skill from PrairieLearn/PrairieLearn. Conventions for validating PrairieLearn Express request parameters, query strings, bodies, and action forms with Zod.
Its SKILL.md is about 850 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Frontend & Design, covering Forms and validation. It works with Zod. The repository describes itself as: Online problem-driven learning system.
When your agent uses it
- Tasks that involve Forms and validation
Example prompts
- “Use the express-request-validation skill to convention for validating PrairieLearn Express request parameters, query strings, bodies, and action…”
- “/express-request-validation”
What it can do on your machine
Read from SKILL.md and the folder at commit 076bf1b. 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 (its code samples are typescript).
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
Express Request Validation loads about 851 tokens when it runs. Until then it costs about 37 tokens; SKILL.md has 373 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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 373 words (~851 tokens).
- name
- express-request-validation
Files
Just SKILL.md in .agents/skills/express-request-validation of PrairieLearn/PrairieLearn.
Open the folder on GitHubat commit 076bf1b
Compare with similar skills
Express Request Validation 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 |
|---|---|---|---|---|---|---|
| Express Request Validation this skillPrairieLearn/PrairieLearn | 512 | — | ~851 | Automated safety check: Pass | Custom licence | |
| World Book Skillecho-xianyu/worldbook-skill | 211 | — | ~1.8k | Automated safety check: Pass | Custom licence | |
| Reglevictorgarciaesgi/regle | 506 | — | ~840 | Automated safety check: Pass | MIT | |
| Buzzformbuildnbuzz/buzzform | 101 | — | ~1.5k | Automated safety check: Pass | MIT | |
| Regle Migrate Vuelidatevictorgarciaesgi/regle | 506 | — | ~752 | Automated safety check: Pass | MIT | |
| Shared SchemasInsForge/InsForge | 13k | — | ~628 | Automated safety check: Pass | Apache-2.0 |
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Related
Works with
Categories
Questions about Express Request Validation
What does Express Request Validation do?
Conventions for validating PrairieLearn Express request parameters, query strings, bodies, and action forms with Zod. Express Request Validation is an agent skill from PrairieLearn/PrairieLearn. Conventions for validating PrairieLearn Express request parameters, query strings, bodies, and action forms with Zod.
When should I use Express Request Validation?
Express Request Validation fits situations like: tasks that involve Forms and validation.
How do I install Express Request Validation in Claude Code?
Run `npx skills add PrairieLearn/PrairieLearn --skill express-request-validation -a claude-code`. Or copy the skill folder (.agents/skills/express-request-validation in PrairieLearn/PrairieLearn) into .claude/skills/express-request-validation in your project. Claude Code loads it when a task matches its description.
How do I install Express Request Validation in Codex?
Run `npx skills add PrairieLearn/PrairieLearn --skill express-request-validation -a codex`. Or copy the skill folder (.agents/skills/express-request-validation in PrairieLearn/PrairieLearn) into .agents/skills/express-request-validation in your project. Codex loads it when a task matches its description.
Can I use Express Request Validation 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 PrairieLearn/PrairieLearn --skill express-request-validation -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/express-request-validation, .gemini/skills/express-request-validation, .github/skills/express-request-validation and .opencode/skills/express-request-validation in your project.
What does Express Request Validation need to run?
SKILL.md names no scripts, command-line tools or credentials: Express Request Validation is instructions for the agent only.
Does Express Request Validation 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 Express Request Validation 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 Express Request Validation use?
Express Request Validation has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Express Request Validation use?
About 851 tokens (SKILL.md is roughly 3.4k 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 Express Request Validation?
Skills that share tags, products or a category with Express Request Validation: World Book Skill (echo-xianyu/worldbook-skill, 211 stars), Regle (victorgarciaesgi/regle, 506 stars), Buzzform (buildnbuzz/buzzform, 101 stars) and Regle Migrate Vuelidate (victorgarciaesgi/regle, 506 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Express Request Validation?
PrairieLearn (a GitHub organization) maintains it in PrairieLearn/PrairieLearn, which has 512 GitHub stars. The repository holds 7 skills in this directory. The repository was last updated on October 7, 2026.
Source: PrairieLearn/PrairieLearn on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.