API Integration
sickn33/agentic-awesome-skills
Designs event-driven architectures, webhook systems, API chaining flows, ETL pipelines, and integration patterns between services.
A skill your agent uses when reviewing templates, rendered HTML, or shared components related to Add Subresource Integrity to external scripts.
MITAuto-check passed
Install Subresource Integrity
$ npx skills add thedaviddias/Front-End-Checklist --skill subresource-integrity -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install thedaviddias/Front-End-Checklist subresource-integrity --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/subresource-integrity .claude/skills/subresource-integrity && 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 "subresource-integrity" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/subresource-integrity into .claude/skills/subresource-integrity/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "subresource-integrity", 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/subresource-integrityType 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 subresource-integrity -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install thedaviddias/Front-End-Checklist subresource-integrity --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/subresource-integrity .agents/skills/subresource-integrity && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "subresource-integrity" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/subresource-integrity into .agents/skills/subresource-integrity/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "subresource-integrity", 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 subresource-integrity -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install thedaviddias/Front-End-Checklist subresource-integrity --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/subresource-integrity .cursor/skills/subresource-integrity && 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 "subresource-integrity" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/subresource-integrity into .cursor/skills/subresource-integrity/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "subresource-integrity", 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/subresource-integrity--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 subresource-integrity -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install thedaviddias/Front-End-Checklist subresource-integrity --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/subresource-integrity .gemini/skills/subresource-integrity && 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 "subresource-integrity" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/subresource-integrity into .gemini/skills/subresource-integrity/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "subresource-integrity", 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 subresource-integrityInstalls 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 subresource-integrity -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/subresource-integrity .github/skills/subresource-integrity && 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 "subresource-integrity" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/subresource-integrity into .github/skills/subresource-integrity/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "subresource-integrity", 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 subresource-integrity -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 subresource-integrity --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/subresource-integrity .opencode/skills/subresource-integrity && 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 "subresource-integrity" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/subresource-integrity into .opencode/skills/subresource-integrity/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "subresource-integrity", 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
subresource-integrity- GitHub stars
- 74k
- Token cost
- ~510 tokens
- SKILL.md length
- 215 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 templates, rendered HTML, or shared components related to Add Subresource Integrity to external scripts.
- Reviewing templates
- 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
- Shared components related to Add Subresource Integrity to external scripts
What it does
Subresource Integrity is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing templates, rendered HTML, or shared components related to Add Subresource Integrity to external scripts. Validate the final browser-facing markup, not just the source framework abstraction.
Its SKILL.md is about 510 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`).
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 templates
- Shared components related to Add Subresource Integrity to external scripts
Example prompts
- “/subresource-integrity”
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
Subresource Integrity loads about 510 tokens when it runs, and up to ~1.5k if it reads all its reference files. Until then it costs about 58 tokens; SKILL.md has 215 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). 215 words, ~510 tokens.
Download SKILL.mdSave it as
.claude/skills/subresource-integrity/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- subresource-integrity
- description
- Use when reviewing templates, rendered HTML, or shared components related to Add Subresource Integrity to external scripts. Validate the final browser-facing markup, not just the source framework abstraction.
- metadata.category
- html
- metadata.priority
- high
- metadata.difficulty
- intermediate
- metadata.estimatedTime
- 15
- metadata.source
- frontendchecklist.io
- metadata.url
- https://frontendchecklist.io/rules/html/subresource-integrity
Add Subresource Integrity to external scripts
When you load JavaScript from a CDN, you're trusting that CDN completely — if it's compromised, attackers can serve malicious JavaScript to all your users. SRI adds a cryptographic hash to the tag; the browser refuses to execute the script if the hash doesn't match the downloaded content, protecting users even if the CDN is compromised or the URL is hijacked.
Quick Reference
- Add integrity="sha384-..." to
<script>and<link>tags loading from CDNs - Always pair integrity with crossorigin="anonymous"
- Generate hashes with openssl or online tools — CDN providers usually supply them
- SRI blocks execution if the file hash doesn't match, preventing CDN compromise attacks
Check
Find all external <script> and <link rel=stylesheet> tags in this HTML that load from CDNs and don't have integrity attributes. List each one.
Fix
Add appropriate integrity and crossorigin attributes to external CDN resources. Generate the SHA-384 hashes for each resource.
Explain
Explain Subresource Integrity, how it protects against CDN compromise, how to generate SRI hashes, and its limitations.
Code Review
Review templates, server-rendered HTML, and shared components that output markup related to Add Subresource Integrity to external scripts. Flag exact elements, attributes, and routes where the rendered HTML violates the rule.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/rules/html/subresource-integrity
© 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/subresource-integrity of thedaviddias/Front-End-Checklist.
- SKILL.md
- references/rule.md
Open the folder on GitHubat commit e8d14d0
Compare with similar skills
Subresource Integrity 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 |
|---|---|---|---|---|---|---|
| Subresource Integrity this skillthedaviddias/Front-End-Checklist | 74k | — | ~510 | Automated safety check: Pass | MIT | |
| API Integrationsickn33/agentic-awesome-skills | 47k | 1 repos | ~1.3k | Automated safety check: Pass | MIT | |
| Labarchive Integrationdavila7/claude-code-templates | 33k | 10 repos | ~2.3k | Automated safety check: Pass | MIT | |
| Robius Matrix Integrationsickn33/agentic-awesome-skills | 47k | 2 repos | ~3.6k | Automated safety check: Pass | MIT | |
| API Integration Architectsickn33/agentic-awesome-skills | 47k | 1 repos | ~2.3k | Automated safety check: Pass | MIT | |
| Integrate Context Maticgithub/awesome-copilot | 40k | 1 repos | ~1.6k | Automated safety check: Notes | MIT |
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Questions about Subresource Integrity
What does Subresource Integrity do?
A skill your agent uses when reviewing templates, rendered HTML, or shared components related to Add Subresource Integrity to external scripts. Subresource Integrity is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing templates, rendered HTML, or shared components related to Add Subresource Integrity to external scripts.
When should I use Subresource Integrity?
Subresource Integrity fits situations like: reviewing templates; shared components related to Add Subresource Integrity to external scripts.
How do I install Subresource Integrity in Claude Code?
Run `npx skills add thedaviddias/Front-End-Checklist --skill subresource-integrity -a claude-code`. Or copy the skill folder (skills/subresource-integrity in thedaviddias/Front-End-Checklist) into .claude/skills/subresource-integrity in your project. Claude Code loads it when a task matches its description.
How do I install Subresource Integrity in Codex?
Run `npx skills add thedaviddias/Front-End-Checklist --skill subresource-integrity -a codex`. Or copy the skill folder (skills/subresource-integrity in thedaviddias/Front-End-Checklist) into .agents/skills/subresource-integrity in your project. Codex loads it when a task matches its description.
Can I use Subresource Integrity 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 subresource-integrity -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/subresource-integrity, .gemini/skills/subresource-integrity, .github/skills/subresource-integrity and .opencode/skills/subresource-integrity in your project.
What does Subresource Integrity need to run?
SKILL.md names no scripts, command-line tools or credentials: Subresource Integrity is instructions for the agent only.
Does Subresource Integrity 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 Subresource Integrity 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 Subresource Integrity use?
Subresource Integrity 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 Subresource Integrity use?
About 510 tokens (SKILL.md is roughly 2k 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 1k tokens, read only when the agent opens those files.
What are the alternatives to Subresource Integrity?
Skills that share tags, products or a category with Subresource Integrity: API Integration (sickn33/agentic-awesome-skills, 47k stars), Labarchive Integration (davila7/claude-code-templates, 33k stars), Robius Matrix Integration (sickn33/agentic-awesome-skills, 47k stars) and API Integration Architect (sickn33/agentic-awesome-skills, 47k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Subresource Integrity?
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.