Cognito
itsmostafa/aws-agent-skills
AWS Cognito user authentication and authorization service. An agent skill from itsmostafa/aws-agent-skills.
JWT, OAuth2, SAML, session management, RBAC, ABAC, and MFA implementation
Install Authentication Authorization
$ npx skills add cosmicstack-labs/mercury-agent-skills --skill authentication-authorization -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install cosmicstack-labs/mercury-agent-skills authentication-authorization --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/cosmicstack-labs/mercury-agent-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/categories/backend/authentication-authorization .claude/skills/authentication-authorization && 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 "authentication-authorization" agent skill from https://github.com/cosmicstack-labs/mercury-agent-skills/tree/main/categories/backend/authentication-authorization into .claude/skills/authentication-authorization/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "authentication-authorization", 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/cosmicstack-labs/mercury-agent-skills/tree/main/categories/backend/authentication-authorizationType 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 cosmicstack-labs/mercury-agent-skills --skill authentication-authorization -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install cosmicstack-labs/mercury-agent-skills authentication-authorization --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cosmicstack-labs/mercury-agent-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/categories/backend/authentication-authorization .agents/skills/authentication-authorization && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "authentication-authorization" agent skill from https://github.com/cosmicstack-labs/mercury-agent-skills/tree/main/categories/backend/authentication-authorization into .agents/skills/authentication-authorization/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "authentication-authorization", 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 cosmicstack-labs/mercury-agent-skills --skill authentication-authorization -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install cosmicstack-labs/mercury-agent-skills authentication-authorization --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cosmicstack-labs/mercury-agent-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/categories/backend/authentication-authorization .cursor/skills/authentication-authorization && 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 "authentication-authorization" agent skill from https://github.com/cosmicstack-labs/mercury-agent-skills/tree/main/categories/backend/authentication-authorization into .cursor/skills/authentication-authorization/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "authentication-authorization", 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/cosmicstack-labs/mercury-agent-skills.git --path categories/backend/authentication-authorization--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 cosmicstack-labs/mercury-agent-skills --skill authentication-authorization -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install cosmicstack-labs/mercury-agent-skills authentication-authorization --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cosmicstack-labs/mercury-agent-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/categories/backend/authentication-authorization .gemini/skills/authentication-authorization && 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 "authentication-authorization" agent skill from https://github.com/cosmicstack-labs/mercury-agent-skills/tree/main/categories/backend/authentication-authorization into .gemini/skills/authentication-authorization/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "authentication-authorization", 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 cosmicstack-labs/mercury-agent-skills authentication-authorizationInstalls 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 cosmicstack-labs/mercury-agent-skills --skill authentication-authorization -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/cosmicstack-labs/mercury-agent-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/categories/backend/authentication-authorization .github/skills/authentication-authorization && 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 "authentication-authorization" agent skill from https://github.com/cosmicstack-labs/mercury-agent-skills/tree/main/categories/backend/authentication-authorization into .github/skills/authentication-authorization/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "authentication-authorization", 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 cosmicstack-labs/mercury-agent-skills --skill authentication-authorization -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install cosmicstack-labs/mercury-agent-skills authentication-authorization --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cosmicstack-labs/mercury-agent-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/categories/backend/authentication-authorization .opencode/skills/authentication-authorization && 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 "authentication-authorization" agent skill from https://github.com/cosmicstack-labs/mercury-agent-skills/tree/main/categories/backend/authentication-authorization into .opencode/skills/authentication-authorization/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "authentication-authorization", 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
authentication-authorization- GitHub stars
- 476
- Token cost
- ~523 tokens
- SKILL.md length
- 189 words
- Files
- 1
- Skills in repo
- 12
- Repo updated
- First seen
- Licence
- MIT
At a glance
JWT, OAuth2, SAML, session management, RBAC, ABAC, and MFA implementation
- Tasks that involve Authorization and RBAC
- SKILL.md covers Authentication Methods, Authorization Models, MFA Implementation and Session Management
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Tasks that involve Authentication
What it does
Authentication Authorization is an agent skill from cosmicstack-labs/mercury-agent-skills. JWT, OAuth2, SAML, session management, RBAC, ABAC, and MFA implementation
Its SKILL.md is about 520 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Backend & APIs, covering Authorization and RBAC and Authentication. The repository describes itself as: A curated registry of reusable Mercury Agent, Open Claw or Hermes Agent skills designed for real developer workflows, persistent memory, and token-efficient execution. The licence is MIT.
When your agent uses it
- Tasks that involve Authorization and RBAC
- Tasks that involve Authentication
Example prompts
- “/authentication-authorization”
What it can do on your machine
Read from SKILL.md and the folder at commit 30392fb. 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 json).
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
Authentication Authorization loads about 523 tokens when it runs. Until then it costs about 26 tokens; SKILL.md has 189 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 cosmicstack-labs/mercury-agent-skills at commit 30392fb, republished under its MIT licence (© cosmicstack-labs). 189 words, ~523 tokens.
Download SKILL.mdSave it as
.claude/skills/authentication-authorization/SKILL.md (or your agent's skills folder).- name
- authentication-authorization
- description
- JWT, OAuth2, SAML, session management, RBAC, ABAC, and MFA implementation
- metadata.author
- cosmicstack-labs
- metadata.version
- 1.0.0
- metadata.category
- backend
- metadata.tags
- authentication, authorization, security, jwt, oauth, rbac
Authentication & Authorization
Implement secure auth in your applications.
Authentication Methods
| Method | Use Case | Security Level |
|---|---|---|
| Session/Cookie | Server-rendered apps | High (HTTP-only, secure flags) |
| JWT | APIs, SPAs | Medium (stateless, revocable with blacklist) |
| OAuth2 | Third-party login | High (delegate to providers) |
| SAML | Enterprise SSO | High (enterprise identity) |
| WebAuthn | Passwordless | Very high (biometric, hardware keys) |
JWT Best Practices
- Short expiry (15 min access, 7 day refresh)
- Store refresh tokens in HTTP-only cookies (not localStorage)
- Use RS256 (asymmetric) not HS256 in microservices
- Include minimal claims (sub, exp, iat, scope)
- Always validate signature + expiry + audience
Authorization Models
RBAC (Role-Based)
{
"roles": ["admin", "editor", "viewer"],
"permissions": {
"admin": ["read:*", "write:*", "delete:*"],
"editor": ["read:*", "write:*"],
"viewer": ["read:*"]
}
}ABAC (Attribute-Based)
Policy engine evaluates: user attributes + resource attributes + environment "Allow access if user.department == resource.department AND user.clearance >= resource.classification"
MFA Implementation
- TOTP (Google Authenticator) — standard
- SMS — least secure, avoid if possible
- Push notification — good UX
- Hardware keys (WebAuthn) — most secure
Enforcement
- Require MFA for admin actions
- Require MFA on new device login
- Remember device with a trust token (30 days max)
- Rate-limit MFA attempts
Session Management
- Rotate session ID on login
- Invalidate on password change
- Show active sessions to user (allow remote logout)
- Absolute session timeout (24h) + idle timeout (2h)
- Log all auth events (login, logout, failure, MFA)
© cosmicstack-labs, 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 categories/backend/authentication-authorization of cosmicstack-labs/mercury-agent-skills.
Open the folder on GitHubat commit 30392fb
Compare with similar skills
Authentication Authorization 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 |
|---|---|---|---|---|---|---|
| Authentication Authorization this skillcosmicstack-labs/mercury-agent-skills | 476 | — | ~523 | Automated safety check: Pass | MIT | |
| Cognitoitsmostafa/aws-agent-skills | 1.2k | 1 repos | ~2.3k | Automated safety check: Pass | MIT | |
| Auth Implementation Patternsynulihao/AgentSkillOS | 617 | 10 repos | ~4.4k | Automated safety check: Pass | None | |
| Configuration Cryptogreenpau/caddy-security | 2.3k | — | ~3.5k | Automated safety check: Pass | Apache-2.0 | |
| Supercheck Security Authsupercheck-io/supercheck | 215 | — | ~1.2k | Automated safety check: Pass | AGPL-3.0 | |
| Bkend Authww-w-ai/bkit-claude-code | 601 | — | ~937 | Automated safety check: Notes | Apache-2.0 |
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Related
Categories
Questions about Authentication Authorization
What does Authentication Authorization do?
JWT, OAuth2, SAML, session management, RBAC, ABAC, and MFA implementation. Authentication Authorization is an agent skill from cosmicstack-labs/mercury-agent-skills.
When should I use Authentication Authorization?
Authentication Authorization fits situations like: tasks that involve Authorization and RBAC; tasks that involve Authentication.
How do I install Authentication Authorization in Claude Code?
Run `npx skills add cosmicstack-labs/mercury-agent-skills --skill authentication-authorization -a claude-code`. Or copy the skill folder (categories/backend/authentication-authorization in cosmicstack-labs/mercury-agent-skills) into .claude/skills/authentication-authorization in your project. Claude Code loads it when a task matches its description.
How do I install Authentication Authorization in Codex?
Run `npx skills add cosmicstack-labs/mercury-agent-skills --skill authentication-authorization -a codex`. Or copy the skill folder (categories/backend/authentication-authorization in cosmicstack-labs/mercury-agent-skills) into .agents/skills/authentication-authorization in your project. Codex loads it when a task matches its description.
Can I use Authentication Authorization 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 cosmicstack-labs/mercury-agent-skills --skill authentication-authorization -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/authentication-authorization, .gemini/skills/authentication-authorization, .github/skills/authentication-authorization and .opencode/skills/authentication-authorization in your project.
What does Authentication Authorization need to run?
SKILL.md names no scripts, command-line tools or credentials: Authentication Authorization is instructions for the agent only.
Does Authentication Authorization 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 Authentication Authorization 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 Authentication Authorization use?
Authentication Authorization 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 Authentication Authorization use?
About 523 tokens (SKILL.md is roughly 2.1k 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 Authentication Authorization?
Skills that share tags, products or a category with Authentication Authorization: Cognito (itsmostafa/aws-agent-skills, 1.2k stars), Auth Implementation Patterns (ynulihao/AgentSkillOS, 617 stars), Configuration Crypto (greenpau/caddy-security, 2.3k stars) and Supercheck Security Auth (supercheck-io/supercheck, 215 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Authentication Authorization?
cosmicstack-labs (a GitHub organization) maintains it in cosmicstack-labs/mercury-agent-skills, which has 476 GitHub stars. The repository holds 12 skills in this directory. The repository was last updated on August 25, 2026.
Source: cosmicstack-labs/mercury-agent-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.