Ros2 Web Integration
arpitg1304/robotics-agent-skills
Patterns and best practices for integrating ROS2 systems with web technologies including REST APIs, WebSocket bridges, and browser-based robot interfaces.
Secure API authentication with JWT, OAuth 2.0, API keys. An agent skill from secondsky/claude-skills.
Install API Authentication
$ npx skills add secondsky/claude-skills --skill api-authentication -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install secondsky/claude-skills api-authentication --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-authentication/skills/api-authentication .claude/skills/api-authentication && 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-authentication" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/api-authentication/skills/api-authentication into .claude/skills/api-authentication/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-authentication", 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-authentication/skills/api-authenticationType 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-authentication -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install secondsky/claude-skills api-authentication --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-authentication/skills/api-authentication .agents/skills/api-authentication && 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-authentication" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/api-authentication/skills/api-authentication into .agents/skills/api-authentication/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-authentication", 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-authentication -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install secondsky/claude-skills api-authentication --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-authentication/skills/api-authentication .cursor/skills/api-authentication && 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-authentication" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/api-authentication/skills/api-authentication into .cursor/skills/api-authentication/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-authentication", 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-authentication/skills/api-authentication--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-authentication -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install secondsky/claude-skills api-authentication --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-authentication/skills/api-authentication .gemini/skills/api-authentication && 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-authentication" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/api-authentication/skills/api-authentication into .gemini/skills/api-authentication/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-authentication", 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-authenticationInstalls 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-authentication -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-authentication/skills/api-authentication .github/skills/api-authentication && 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-authentication" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/api-authentication/skills/api-authentication into .github/skills/api-authentication/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-authentication", 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-authentication -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-authentication --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-authentication/skills/api-authentication .opencode/skills/api-authentication && 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-authentication" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/api-authentication/skills/api-authentication into .opencode/skills/api-authentication/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-authentication", 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-authentication- GitHub stars
- 227
- Token cost
- ~666 tokens
- SKILL.md length
- 123 words
- Files
- 2 (incl. references)
- Skills in repo
- 169
- Repo updated
- First seen
- Licence
- MIT
At a glance
Secure API authentication with JWT, OAuth 2.0, API keys. An agent skill from secondsky/claude-skills.
- Authentication systems
- SKILL.md covers Authentication Methods, JWT Implementation (Node.js), Security Requirements and Security Headers, plus 2 more sections
- Needs JWT_SECRET and REFRESH_SECRET
- Third-party integrations
What it does
API Authentication is an agent skill from secondsky/claude-skills. Secure API authentication with JWT, OAuth 2.0, API keys. Use for authentication systems, third-party integrations, service-to-service communication, or encountering token management, security headers, auth flow errors.
Its SKILL.md is about 670 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/python-flask.md`).
It sits in Backend & APIs, covering Authentication. It works with Flask. 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
- Authentication systems
- Third-party integrations
- Service-to-service communication
- Encountering token management
Example prompts
- “/api-authentication”
Requirements
- Node.js
- A credential in JWT_SECRET
- A credential in REFRESH_SECRET
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 these keys or tokens, usually read from environment variables:
JWT_SECRETREFRESH_SECRET
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
API Authentication loads about 666 tokens when it runs, and up to ~2.3k if it reads all its reference files. Until then it costs about 59 tokens; SKILL.md has 123 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). 123 words, ~666 tokens.
Download SKILL.mdSave it as
.claude/skills/api-authentication/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- api-authentication
- description
- Secure API authentication with JWT, OAuth 2.0, API keys. Use for authentication systems, third-party integrations, service-to-service communication, or encountering token management, security headers, auth flow errors.
- license
- MIT
API Authentication
Implement secure authentication mechanisms for APIs using modern standards and best practices.
Authentication Methods
| Method | Use Case | Security Level |
|---|---|---|
| JWT | Stateless auth, SPAs | High |
| OAuth 2.0 | Third-party integration | High |
| API Keys | Service-to-service | Medium |
| Session | Traditional web apps | High |
JWT Implementation (Node.js)
const jwt = require('jsonwebtoken');
const generateTokens = (user) => ({
accessToken: jwt.sign(
{ userId: user.id, role: user.role },
process.env.JWT_SECRET,
{ expiresIn: '15m' }
),
refreshToken: jwt.sign(
{ userId: user.id, type: 'refresh' },
process.env.REFRESH_SECRET,
{ expiresIn: '7d' }
)
});
const authMiddleware = (req, res, next) => {
const authHeader = req.headers.authorization;
// Validate authorization header format
if (!authHeader || !authHeader.startsWith('Bearer ')) {
return res.status(401).json({ error: 'Malformed authorization header' });
}
const parts = authHeader.split(' ');
if (parts.length !== 2) {
return res.status(401).json({ error: 'Malformed authorization header' });
}
const token = parts[1];
if (!token) {
return res.status(401).json({ error: 'No token provided' });
}
try {
req.user = jwt.verify(token, process.env.JWT_SECRET);
next();
} catch (err) {
res.status(401).json({ error: 'Invalid token' });
}
};Security Requirements
- Always use HTTPS
- Store tokens in HttpOnly cookies (not localStorage)
- Hash passwords with bcrypt (cost factor 12+)
- Implement rate limiting on auth endpoints
- Rotate secrets regularly
- Never transmit tokens in URLs
Security Headers
app.use((req, res, next) => {
res.setHeader('X-Content-Type-Options', 'nosniff');
res.setHeader('X-Frame-Options', 'DENY');
res.setHeader('Strict-Transport-Security', 'max-age=31536000');
next();
});Additional Implementations
See references/python-flask.md for:
- Flask JWT with role-based access control decorators
- OAuth 2.0 Google integration with Authlib
- API key authentication with secure hashing
Common Mistakes to Avoid
- Storing plain-text passwords
- Using weak JWT secrets
- Ignoring token expiration
- Disabling HTTPS in production
- Logging sensitive tokens
© 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
SKILL.md and 1 other file (references) in plugins/api-authentication/skills/api-authentication of secondsky/claude-skills.
- SKILL.md
- references/python-flask.md
Open the folder on GitHubat commit 8837836
Compare with similar skills
API Authentication 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 Authentication this skillsecondsky/claude-skills | 227 | — | ~666 | Automated safety check: Pass | MIT | |
| Ros2 Web Integrationarpitg1304/robotics-agent-skills | 368 | — | ~13k | Automated safety check: Notes | Apache-2.0 | |
| Fortify Developmentcoollabsio/coolify | 63k | 4 repos | ~1.9k | Automated safety check: Pass | MIT | |
| Supabase Development and Debuggingsupabase/agent-skills | 2.7k | 3 repos | ~3.6k | Automated safety check: Pass | MIT | |
| Better Auth Best Practiceslatitude-dev/latitude-llm | 4.7k | 7 repos | ~1.6k | Automated safety check: Pass | MIT | |
| Supabasecurvenote/curvenote | 169 | 5 repos | ~2.2k | Automated safety check: Pass | Custom licence |
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Related
Works with
Categories
Questions about API Authentication
What does API Authentication do?
Secure API authentication with JWT, OAuth 2.0, API keys. An agent skill from secondsky/claude-skills. API Authentication is an agent skill from secondsky/claude-skills.0, API keys.
When should I use API Authentication?
API Authentication fits situations like: authentication systems; third-party integrations; service-to-service communication; encountering token management.
How do I install API Authentication in Claude Code?
Run `npx skills add secondsky/claude-skills --skill api-authentication -a claude-code`. Or copy the skill folder (plugins/api-authentication/skills/api-authentication in secondsky/claude-skills) into .claude/skills/api-authentication in your project. Claude Code loads it when a task matches its description.
How do I install API Authentication in Codex?
Run `npx skills add secondsky/claude-skills --skill api-authentication -a codex`. Or copy the skill folder (plugins/api-authentication/skills/api-authentication in secondsky/claude-skills) into .agents/skills/api-authentication in your project. Codex loads it when a task matches its description.
Can I use API Authentication 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-authentication -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-authentication, .gemini/skills/api-authentication, .github/skills/api-authentication and .opencode/skills/api-authentication in your project.
What does API Authentication need to run?
Going by SKILL.md and its folder, API Authentication needs credentials named JWT_SECRET and REFRESH_SECRET. Our summary lists: Node.js; A credential in JWT_SECRET; A credential in REFRESH_SECRET.
Does API Authentication 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 Authentication 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 Authentication use?
API Authentication 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 Authentication use?
About 666 tokens (SKILL.md is roughly 2.7k 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 1.7k tokens, read only when the agent opens those files.
What are the alternatives to API Authentication?
Skills that share tags, products or a category with API Authentication: Ros2 Web Integration (arpitg1304/robotics-agent-skills, 368 stars), Fortify Development (coollabsio/coolify, 63k stars), Supabase Development and Debugging (supabase/agent-skills, 2.7k stars) and Better Auth Best Practices (latitude-dev/latitude-llm, 4.7k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains API Authentication?
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.