Parameters
thedaviddias/Front-End-Checklist
A skill your agent uses when auditing URL structure or configuring search engine handling of filtered, sorted, or tracked URLs.
Builds flexible API filtering and sorting systems with query parameter parsing, validation, and security.
MITAuto-check passed
Install API Filtering Sorting
$ npx skills add secondsky/claude-skills --skill api-filtering-sorting -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install secondsky/claude-skills api-filtering-sorting --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/secondsky/claude-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/api-filtering-sorting/skills/api-filtering-sorting .claude/skills/api-filtering-sorting && 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 "api-filtering-sorting" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/api-filtering-sorting/skills/api-filtering-sorting into .claude/skills/api-filtering-sorting/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-filtering-sorting", 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/secondsky/claude-skills/tree/main/plugins/api-filtering-sorting/skills/api-filtering-sortingType 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 secondsky/claude-skills --skill api-filtering-sorting -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install secondsky/claude-skills api-filtering-sorting --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/secondsky/claude-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/api-filtering-sorting/skills/api-filtering-sorting .agents/skills/api-filtering-sorting && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "api-filtering-sorting" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/api-filtering-sorting/skills/api-filtering-sorting into .agents/skills/api-filtering-sorting/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-filtering-sorting", 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 secondsky/claude-skills --skill api-filtering-sorting -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install secondsky/claude-skills api-filtering-sorting --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/secondsky/claude-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/api-filtering-sorting/skills/api-filtering-sorting .cursor/skills/api-filtering-sorting && 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 "api-filtering-sorting" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/api-filtering-sorting/skills/api-filtering-sorting into .cursor/skills/api-filtering-sorting/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-filtering-sorting", 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/secondsky/claude-skills.git --path plugins/api-filtering-sorting/skills/api-filtering-sorting--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 secondsky/claude-skills --skill api-filtering-sorting -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install secondsky/claude-skills api-filtering-sorting --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/secondsky/claude-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/api-filtering-sorting/skills/api-filtering-sorting .gemini/skills/api-filtering-sorting && 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 "api-filtering-sorting" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/api-filtering-sorting/skills/api-filtering-sorting into .gemini/skills/api-filtering-sorting/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-filtering-sorting", 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 secondsky/claude-skills api-filtering-sortingInstalls 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 secondsky/claude-skills --skill api-filtering-sorting -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/secondsky/claude-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/api-filtering-sorting/skills/api-filtering-sorting .github/skills/api-filtering-sorting && 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 "api-filtering-sorting" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/api-filtering-sorting/skills/api-filtering-sorting into .github/skills/api-filtering-sorting/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-filtering-sorting", 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 secondsky/claude-skills --skill api-filtering-sorting -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install secondsky/claude-skills api-filtering-sorting --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/secondsky/claude-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/api-filtering-sorting/skills/api-filtering-sorting .opencode/skills/api-filtering-sorting && 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 "api-filtering-sorting" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/api-filtering-sorting/skills/api-filtering-sorting into .opencode/skills/api-filtering-sorting/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-filtering-sorting", 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
api-filtering-sorting- GitHub stars
- 227
- Used in
- 1 other repo
- Token cost
- ~587 tokens
- SKILL.md length
- 80 words
- Files
- 1
- Skills in repo
- 169
- Repo updated
- First seen
- Licence
- MIT
At a glance
Builds flexible API filtering and sorting systems with query parameter parsing, validation, and security.
- Implementing search endpoints
- SKILL.md covers Query Parameter Syntax, Implementation (Node.js), Filter Operators and Security, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Building data grids
What it does
API Filtering Sorting is an agent skill from secondsky/claude-skills. Builds flexible API filtering and sorting systems with query parameter parsing, validation, and security. Use when implementing search endpoints, building data grids, or creating dynamic query APIs.
Its SKILL.md is about 590 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: Production-ready skills for Claude Code CLI - Cloudflare, React, Tailwind v4, and AI integrations. The licence is MIT.
When your agent uses it
- Implementing search endpoints
- Building data grids
- Creating dynamic query APIs
Example prompts
- “Use the api-filtering-sorting skill to build flexible API filtering and sorting systems with query parameter parsing, validation, and security”
- “/api-filtering-sorting”
Requirements
- Node.js
What it can do on your machine
Read from SKILL.md and the folder at commit 8837836. 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 javascript).
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
API Filtering Sorting loads about 587 tokens when it runs. Until then it costs about 55 tokens; SKILL.md has 80 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 secondsky/claude-skills at commit 8837836, republished under its MIT licence (© secondsky). 80 words, ~587 tokens.
Download SKILL.mdSave it as
.claude/skills/api-filtering-sorting/SKILL.md (or your agent's skills folder).- name
- api-filtering-sorting
- description
- Builds flexible API filtering and sorting systems with query parameter parsing, validation, and security. Use when implementing search endpoints, building data grids, or creating dynamic query APIs.
- license
- MIT
API Filtering & Sorting
Build flexible filtering and sorting systems that handle complex queries efficiently.
Query Parameter Syntax
GET /products?category=electronics&price[gte]=100&price[lte]=500&sort=-price,nameImplementation (Node.js)
const allowedFilters = ['category', 'status', 'price', 'createdAt'];
const allowedSorts = ['name', 'price', 'createdAt'];
app.get('/products', async (req, res) => {
const filter = {};
const sort = {};
// Parse filters
for (const [key, value] of Object.entries(req.query)) {
if (key === 'sort') continue;
const match = key.match(/^(\w+)\[(\w+)\]$/);
if (match) {
const [, field, operator] = match;
if (!allowedFilters.includes(field)) continue;
filter[field] = { [`$${operator}`]: parseValue(value) };
} else if (allowedFilters.includes(key)) {
filter[key] = value;
}
}
// Parse sort
if (req.query.sort) {
for (const field of req.query.sort.split(',')) {
const direction = field.startsWith('-') ? -1 : 1;
const name = field.replace(/^-/, '');
if (allowedSorts.includes(name)) sort[name] = direction;
}
}
const products = await Product.find(filter).sort(sort);
res.json({ data: products });
});
function parseValue(value) {
if (value === 'true') return true;
if (value === 'false') return false;
if (!isNaN(value)) return Number(value);
return value;
}Filter Operators
| Operator | Meaning | Example |
|---|---|---|
| eq | Equals | ?status=active |
| ne | Not equals | ?status[ne]=deleted |
| gt/gte | Greater than | ?price[gte]=100 |
| lt/lte | Less than | ?price[lte]=500 |
| in | In array | ?status[in]=active,pending |
| like | Contains | ?name[like]=phone |
Security
- Whitelist allowed filter fields
- Validate input types per field
- Index frequently-filtered columns
- Limit query complexity
- Prevent SQL/NoSQL injection
Best Practices
- Support common operators
- Cache filter option lists
- Monitor query performance
- Provide sensible defaults
© secondsky, 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 plugins/api-filtering-sorting/skills/api-filtering-sorting of secondsky/claude-skills.
Open the folder on GitHubat commit 8837836
Used in 1 other repository
We found 2 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in secondsky/claude-skills, which our catalogue first saw on October 7, 2026.
Compare with similar skills
API Filtering Sorting 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 |
|---|---|---|---|---|---|---|
| API Filtering Sorting this skillsecondsky/claude-skills | 227 | 1 repos | ~587 | Automated safety check: Pass | MIT | |
| Parametersthedaviddias/Front-End-Checklist | 74k | — | ~638 | Automated safety check: Pass | MIT | |
| Agent Sortaffaan-m/ECC | 274k | 1 repos | ~1.5k | Automated safety check: Pass | MIT | |
| Filterzalando/skipper | 3.3k | — | ~527 | Automated safety check: Pass | MIT | |
| Agent Sortaffaan-m/ECC | 274k | — | ~973 | Automated safety check: Pass | MIT | |
| Agent Sortaffaan-m/ECC | 274k | — | ~691 | Automated safety check: Pass | MIT |
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Questions about API Filtering Sorting
What does API Filtering Sorting do?
Builds flexible API filtering and sorting systems with query parameter parsing, validation, and security. API Filtering Sorting is an agent skill from secondsky/claude-skills. Builds flexible API filtering and sorting systems with query parameter parsing, validation, and security.
When should I use API Filtering Sorting?
API Filtering Sorting fits situations like: implementing search endpoints; building data grids; creating dynamic query APIs.
How do I install API Filtering Sorting in Claude Code?
Run `npx skills add secondsky/claude-skills --skill api-filtering-sorting -a claude-code`. Or copy the skill folder (plugins/api-filtering-sorting/skills/api-filtering-sorting in secondsky/claude-skills) into .claude/skills/api-filtering-sorting in your project. Claude Code loads it when a task matches its description.
How do I install API Filtering Sorting in Codex?
Run `npx skills add secondsky/claude-skills --skill api-filtering-sorting -a codex`. Or copy the skill folder (plugins/api-filtering-sorting/skills/api-filtering-sorting in secondsky/claude-skills) into .agents/skills/api-filtering-sorting in your project. Codex loads it when a task matches its description.
Can I use API Filtering Sorting 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 secondsky/claude-skills --skill api-filtering-sorting -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/api-filtering-sorting, .gemini/skills/api-filtering-sorting, .github/skills/api-filtering-sorting and .opencode/skills/api-filtering-sorting in your project.
What does API Filtering Sorting need to run?
SKILL.md names no scripts, command-line tools or credentials: API Filtering Sorting is instructions for the agent only. Our summary lists: Node.js.
Does API Filtering Sorting 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 API Filtering Sorting 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 API Filtering Sorting use?
API Filtering Sorting is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does API Filtering Sorting use?
About 587 tokens (SKILL.md is roughly 2.3k 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 API Filtering Sorting?
Skills that share tags, products or a category with API Filtering Sorting: Parameters (thedaviddias/Front-End-Checklist, 74k stars), Agent Sort (affaan-m/ECC, 274k stars), Filter (zalando/skipper, 3.3k stars) and Agent Sort (affaan-m/ECC, 274k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains API Filtering Sorting?
secondsky (a GitHub user) maintains it in secondsky/claude-skills, which has 227 GitHub stars. The repository holds 169 skills in this directory. The repository was last updated on September 28, 2026.
Source: secondsky/claude-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.