C15t
c15t/c15t
Work with c15t consent management docs, APIs, and integrations for Next.js, React, and JavaScript.
A skill your agent uses when reviewing a website for privacy compliance, third-party resource loading, or cookie consent implementation.
Install Third Party Cookies
$ npx skills add thedaviddias/Front-End-Checklist --skill third-party-cookies -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install thedaviddias/Front-End-Checklist third-party-cookies --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/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/third-party-cookies .claude/skills/third-party-cookies && 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 "third-party-cookies" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/third-party-cookies into .claude/skills/third-party-cookies/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "third-party-cookies", 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/thedaviddias/Front-End-Checklist/tree/main/skills/third-party-cookiesType 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 thedaviddias/Front-End-Checklist --skill third-party-cookies -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install thedaviddias/Front-End-Checklist third-party-cookies --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/third-party-cookies .agents/skills/third-party-cookies && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "third-party-cookies" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/third-party-cookies into .agents/skills/third-party-cookies/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "third-party-cookies", 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 thedaviddias/Front-End-Checklist --skill third-party-cookies -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install thedaviddias/Front-End-Checklist third-party-cookies --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/third-party-cookies .cursor/skills/third-party-cookies && 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 "third-party-cookies" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/third-party-cookies into .cursor/skills/third-party-cookies/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "third-party-cookies", 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/thedaviddias/Front-End-Checklist.git --path skills/third-party-cookies--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 thedaviddias/Front-End-Checklist --skill third-party-cookies -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install thedaviddias/Front-End-Checklist third-party-cookies --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/third-party-cookies .gemini/skills/third-party-cookies && 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 "third-party-cookies" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/third-party-cookies into .gemini/skills/third-party-cookies/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "third-party-cookies", 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 thedaviddias/Front-End-Checklist third-party-cookiesInstalls 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 thedaviddias/Front-End-Checklist --skill third-party-cookies -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/third-party-cookies .github/skills/third-party-cookies && 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 "third-party-cookies" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/third-party-cookies into .github/skills/third-party-cookies/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "third-party-cookies", 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 thedaviddias/Front-End-Checklist --skill third-party-cookies -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install thedaviddias/Front-End-Checklist third-party-cookies --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/third-party-cookies .opencode/skills/third-party-cookies && 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 "third-party-cookies" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/third-party-cookies into .opencode/skills/third-party-cookies/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "third-party-cookies", 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
third-party-cookies- GitHub stars
- 74k
- Token cost
- ~580 tokens
- SKILL.md length
- 250 words
- Files
- 2 (incl. references)
- Skills in repo
- 390
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill your agent uses when reviewing a website for privacy compliance, third-party resource loading, or cookie consent implementation.
- Reviewing a website for privacy compliance
- SKILL.md covers Quick Reference, Check, Fix and Explain, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Third-party resource loading
What it does
Third Party Cookies is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing a website for privacy compliance, third-party resource loading, or cookie consent implementation.
Its SKILL.md is about 580 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/rule.md`).
It sits in Legal & Compliance, covering Privacy and GDPR. The repository describes itself as: 🗂 The essential checklist for modern web development, for humans and AI agents. The licence is MIT.
When your agent uses it
- Reviewing a website for privacy compliance
- Third-party resource loading
- Cookie consent implementation
Example prompts
- “/third-party-cookies”
What it can do on your machine
Read from SKILL.md and the folder at commit e8d14d0. 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
Links to these hosts (documentation or services it may open):
frontendchecklist.io
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
Third Party Cookies loads about 580 tokens when it runs, and up to ~1.9k if it reads all its reference files. Until then it costs about 34 tokens; SKILL.md has 250 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 thedaviddias/Front-End-Checklist at commit e8d14d0, republished under its MIT licence (© thedaviddias). 250 words, ~580 tokens.
Download SKILL.mdSave it as
.claude/skills/third-party-cookies/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- third-party-cookies
- description
- Use when reviewing a website for privacy compliance, third-party resource loading, or cookie consent implementation.
- metadata.category
- privacy
- metadata.priority
- medium
- metadata.difficulty
- intermediate
- metadata.estimatedTime
- 20
- metadata.source
- frontendchecklist.io
- metadata.url
- https://frontendchecklist.io/rules/privacy/third-party-cookies
Avoid third-party cookies
Third-party cookies enable advertising networks to build detailed behavioral profiles of users across every site they visit — without users being aware. Regulatory penalties for non-compliance with GDPR reach up to 4% of global annual turnover.
Quick Reference
- Third-party cookies are set by a domain other than the one the user is visiting — typically by ad networks, analytics, or embedded widgets
- Chrome is removing third-party cookie support and all major browsers now block or restrict them
- Use the Network DevTools panel to identify
Set-Cookieheaders from third-party domains - GDPR (EU), CCPA (California), and PECR (UK) require informed consent before setting non-essential cookies
- Alternatives: first-party data collection, privacy-preserving analytics (Plausible, Fathom), server-side tracking
Check
Open the browser DevTools Network panel and Application panel (Cookies section). Identify all cookies set by domains other than the current domain. Check for tracking pixels, analytics scripts, and advertising tags that set cross-site cookies.
Fix
Audit and remove unnecessary third-party scripts. Replace cross-site tracking with privacy-preserving first-party analytics. Ensure any remaining third-party cookies are gated behind explicit user consent via a cookie consent mechanism.
Explain
Explain what third-party cookies are, how they enable cross-site tracking, why browsers are blocking them, and how GDPR/CCPA regulate their use.
Code Review
Review server config, headers, forms, and integration points related to Avoid third-party cookies. Flag exact responses, cookies, or browser behaviors that violate the rule, and verify them against the effective production-like response.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/rules/privacy/third-party-cookies
© thedaviddias, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file (references) in skills/third-party-cookies of thedaviddias/Front-End-Checklist.
- SKILL.md
- references/rule.md
Open the folder on GitHubat commit e8d14d0
Compare with similar skills
Third Party Cookies 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 |
|---|---|---|---|---|---|---|
| Third Party Cookies this skillthedaviddias/Front-End-Checklist | 74k | — | ~580 | Automated safety check: Pass | MIT | |
| C15tc15t/c15t | 1.9k | 1 repos | ~1.6k | Automated safety check: Pass | Apache-2.0 | |
| HIPAA Safe Harbor Coverage Auditmaziyarpanahi/openmed | 5.5k | — | ~1.7k | Automated safety check: Pass | Apache-2.0 | |
| Korean Privacy Termskimlawtech/korean-privacy-terms | 587 | — | ~2.9k | Automated safety check: Pass | Apache-2.0 | |
| Gdpr ComplianceSushegaad/Claude-Skills-Governance-Risk-and-Compliance | 946 | 1 repos | ~3.9k | Automated safety check: Pass | MIT | |
| Hipaa ComplianceSushegaad/Claude-Skills-Governance-Risk-and-Compliance | 946 | 1 repos | ~2.3k | Automated safety check: Pass | MIT |
Similar skills
HIPAA Safe Harbor Coverage Audit
maziyarpanahi/openmed
Checks OpenMed de-identified clinical text against the 18 HIPAA Safe Harbor identifier categories and reports gaps and residual re-identification risk.
Korean Privacy Terms
kimlawtech/korean-privacy-terms
처리방침·이용약관 자동 생성 스킬 패키지 (v4.0). An agent skill from kimlawtech/korean-privacy-terms.
Gdpr Compliance
Sushegaad/Claude-Skills-Governance-Risk-and-Compliance
Expert GDPR compliance assistant covering all four core workflows: (1) auditing code and systems for GDPR violations, (2) drafting GDPR-compliant documents such as privacy policies, Data Processing…
Hipaa Compliance
Sushegaad/Claude-Skills-Governance-Risk-and-Compliance
Expert HIPAA compliance assistant for healthcare and software contexts.
Pii Contract Analyze
gregmos/PII-Shield
Universal legal document processor with PII anonymization. An agent skill from gregmos/PII-Shield.
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Related
Categories
Questions about Third Party Cookies
What does Third Party Cookies do?
A skill your agent uses when reviewing a website for privacy compliance, third-party resource loading, or cookie consent implementation. Third Party Cookies is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing a website for privacy compliance, third-party resource loading, or cookie consent implementation.
When should I use Third Party Cookies?
Third Party Cookies fits situations like: reviewing a website for privacy compliance; third-party resource loading; cookie consent implementation.
How do I install Third Party Cookies in Claude Code?
Run `npx skills add thedaviddias/Front-End-Checklist --skill third-party-cookies -a claude-code`. Or copy the skill folder (skills/third-party-cookies in thedaviddias/Front-End-Checklist) into .claude/skills/third-party-cookies in your project. Claude Code loads it when a task matches its description.
How do I install Third Party Cookies in Codex?
Run `npx skills add thedaviddias/Front-End-Checklist --skill third-party-cookies -a codex`. Or copy the skill folder (skills/third-party-cookies in thedaviddias/Front-End-Checklist) into .agents/skills/third-party-cookies in your project. Codex loads it when a task matches its description.
Can I use Third Party Cookies 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 thedaviddias/Front-End-Checklist --skill third-party-cookies -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/third-party-cookies, .gemini/skills/third-party-cookies, .github/skills/third-party-cookies and .opencode/skills/third-party-cookies in your project.
What does Third Party Cookies need to run?
SKILL.md names no scripts, command-line tools or credentials: Third Party Cookies is instructions for the agent only.
Does Third Party Cookies access the network?
SKILL.md names 1 domain. As links in the text: frontendchecklist.io. This is read from the text; nothing was executed.
Is Third Party Cookies 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 Third Party Cookies use?
Third Party Cookies 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 Third Party Cookies use?
About 580 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. Its references folder adds about 1.3k tokens, read only when the agent opens those files.
What are the alternatives to Third Party Cookies?
Skills that share tags, products or a category with Third Party Cookies: C15t (c15t/c15t, 1.9k stars), HIPAA Safe Harbor Coverage Audit (maziyarpanahi/openmed, 5.5k stars), Korean Privacy Terms (kimlawtech/korean-privacy-terms, 587 stars) and Gdpr Compliance (Sushegaad/Claude-Skills-Governance-Risk-and-Compliance, 946 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Third Party Cookies?
thedaviddias (a GitHub user) maintains it in thedaviddias/Front-End-Checklist, which has 74,421 GitHub stars. The repository holds 390 skills in this directory. The repository was last updated on October 6, 2026.
Source: thedaviddias/Front-End-Checklist on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.