Object Storage
sickn33/agentic-awesome-skills
Configure object storage with S3, GCS, and MinIO. An agent skill from sickn33/agentic-awesome-skills.
A skill your agent uses when reviewing scripts, client components, bundles, or runtime behavior related to Use Web Storage API safely.
MITAuto-check passed
Install Web Storage
$ npx skills add thedaviddias/Front-End-Checklist --skill web-storage -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install thedaviddias/Front-End-Checklist web-storage --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/web-storage .claude/skills/web-storage && 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 "web-storage" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/web-storage into .claude/skills/web-storage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "web-storage", 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/web-storageType 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 web-storage -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install thedaviddias/Front-End-Checklist web-storage --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/web-storage .agents/skills/web-storage && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "web-storage" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/web-storage into .agents/skills/web-storage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "web-storage", 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 web-storage -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install thedaviddias/Front-End-Checklist web-storage --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/web-storage .cursor/skills/web-storage && 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 "web-storage" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/web-storage into .cursor/skills/web-storage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "web-storage", 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/web-storage--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 web-storage -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install thedaviddias/Front-End-Checklist web-storage --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/web-storage .gemini/skills/web-storage && 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 "web-storage" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/web-storage into .gemini/skills/web-storage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "web-storage", 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 web-storageInstalls 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 web-storage -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/web-storage .github/skills/web-storage && 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 "web-storage" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/web-storage into .github/skills/web-storage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "web-storage", 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 web-storage -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 web-storage --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/web-storage .opencode/skills/web-storage && 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 "web-storage" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/web-storage into .opencode/skills/web-storage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "web-storage", 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
web-storage- GitHub stars
- 74k
- Token cost
- ~506 tokens
- SKILL.md length
- 216 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 scripts, client components, bundles, or runtime behavior related to Use Web Storage API safely.
- Reviewing scripts
- 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
- Client components
What it does
Web Storage is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing scripts, client components, bundles, or runtime behavior related to Use Web Storage API safely. Inspect both source code and the browser execution path so fixes target the real bottleneck or bug.
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 scripts
- Client components
- Runtime behavior related to Use Web Storage API safely
Example prompts
- “/web-storage”
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
Web Storage loads about 506 tokens when it runs, and up to ~1.6k if it reads all its reference files. Until then it costs about 57 tokens; SKILL.md has 216 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). 216 words, ~506 tokens.
Download SKILL.mdSave it as
.claude/skills/web-storage/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- web-storage
- description
- Use when reviewing scripts, client components, bundles, or runtime behavior related to Use Web Storage API safely. Inspect both source code and the browser execution path so fixes target the real bottleneck or bug.
- metadata.category
- javascript
- metadata.priority
- medium
- metadata.difficulty
- beginner
- metadata.estimatedTime
- 15
- metadata.source
- frontendchecklist.io
- metadata.url
- https://frontendchecklist.io/rules/javascript/web-storage
Use Web Storage API safely
localStorage and sessionStorage have a 5–10 MB quota per origin, and any write can throw a QuotaExceededError. Private browsing modes in some browsers disable storage entirely and throw on all writes. Applications that don't handle these errors crash silently, leaving users unable to use the app.
Quick Reference
- Always wrap localStorage access in try/catch — storage can be full or disabled
- Serialize objects with JSON.stringify and validate on read with JSON.parse
- Never store sensitive data (tokens, passwords) in localStorage — use httpOnly cookies
- Use sessionStorage for tab-scoped data that shouldn't persist
Check
Find all localStorage and sessionStorage accesses in this file. Check for missing try/catch, unhandled JSON parsing, and any storage of sensitive data.
Fix
Add try/catch error handling to all Web Storage operations and ensure all object values are properly serialized and deserialized.
Explain
Explain the Web Storage API, its limitations, when to use localStorage vs sessionStorage, and what data should never be stored there.
Code Review
Review scripts, client components, and browser execution paths related to Use Web Storage API safely. Flag exact imports, event handlers, runtime side effects, or blocking operations that violate the rule, and state how the change should be verified in the browser.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/rules/javascript/web-storage
© 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/web-storage of thedaviddias/Front-End-Checklist.
- SKILL.md
- references/rule.md
Open the folder on GitHubat commit e8d14d0
Compare with similar skills
Web Storage 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 |
|---|---|---|---|---|---|---|
| Web Storage this skillthedaviddias/Front-End-Checklist | 74k | — | ~506 | Automated safety check: Pass | MIT | |
| Object Storagesickn33/agentic-awesome-skills | 47k | 2 repos | ~2.6k | Automated safety check: Pass | MIT | |
| Neon Object Storagesickn33/agentic-awesome-skills | 47k | 1 repos | ~2.9k | Automated safety check: Notes | Apache-2.0 | |
| Triage Support Bundlenetdata/netdata | 81k | — | ~2.7k | Automated safety check: Pass | GPL-3.0 | |
| Django Storages for S3Jeffallan/claude-skills | 12k | — | ~1.9k | Automated safety check: Pass | MIT | |
| Gke Storagegoogle/skills | 21k | — | ~1.8k | Automated safety check: Pass | Apache-2.0 |
Similar skills
Neon Object Storage
sickn33/agentic-awesome-skills
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Investigate a Netdata support bundle offline - the archive netdata-support-bundle produces - to explain one host's alerts, missing data, collector failures, crashes, high CPU or memory, streaming…
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- Official
Gke Storage
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Manages GKE storage, including PVCs, PersistentVolumes, and Filestore.
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Google Cloud Storage Bucket Architect
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Creates Cloud Storage on Google Cloud (also known colloquially as GCS) buckets.
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Questions about Web Storage
What does Web Storage do?
A skill your agent uses when reviewing scripts, client components, bundles, or runtime behavior related to Use Web Storage API safely. Web Storage is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing scripts, client components, bundles, or runtime behavior related to Use Web Storage API safely.
When should I use Web Storage?
Web Storage fits situations like: reviewing scripts; client components; runtime behavior related to Use Web Storage API safely.
How do I install Web Storage in Claude Code?
Run `npx skills add thedaviddias/Front-End-Checklist --skill web-storage -a claude-code`. Or copy the skill folder (skills/web-storage in thedaviddias/Front-End-Checklist) into .claude/skills/web-storage in your project. Claude Code loads it when a task matches its description.
How do I install Web Storage in Codex?
Run `npx skills add thedaviddias/Front-End-Checklist --skill web-storage -a codex`. Or copy the skill folder (skills/web-storage in thedaviddias/Front-End-Checklist) into .agents/skills/web-storage in your project. Codex loads it when a task matches its description.
Can I use Web Storage 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 web-storage -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/web-storage, .gemini/skills/web-storage, .github/skills/web-storage and .opencode/skills/web-storage in your project.
What does Web Storage need to run?
SKILL.md names no scripts, command-line tools or credentials: Web Storage is instructions for the agent only.
Does Web Storage 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 Web Storage 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 Web Storage use?
Web Storage 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 Web Storage use?
About 506 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 1.1k tokens, read only when the agent opens those files.
What are the alternatives to Web Storage?
Skills that share tags, products or a category with Web Storage: Object Storage (sickn33/agentic-awesome-skills, 47k stars), Neon Object Storage (sickn33/agentic-awesome-skills, 47k stars), Triage Support Bundle (netdata/netdata, 81k stars) and Django Storages for S3 (Jeffallan/claude-skills, 12k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Web Storage?
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.