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tailscale-custom/.agent/skills/api-patterns/SKILL.md
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feat: security hardening, production roadmap, admin panel v1
Client security fixes (cmd/tailscale-tray/main.go):
- SSRF protection in Add Server dialog (validateControlURL): reject
  private/loopback/link-local/cloud-metadata IPs via DNS resolution
- RCE gate on AuthURL/BrowseToURL exec paths (validateAuthURL)
- Sanitized URL logging (sanitizeURLForLog drops query auth tokens)
- Error handling on exec.Command with user-facing showError()

Admin panel security (web-admin):
- Bcrypt password hashing (replaces SHA256)
- Rate limiting: 5 failed logins → 15-min lockout
- Session + login attempt cleanup goroutine (hourly)
- url.QueryEscape / encodeURIComponent for all API params
- Fail-hard startup when no TLS and non-loopback bind
- ADMIN_PASSWORD required (no default), password min 12 chars
- Username regex whitelist

Installer hardening (Setup.wxs):
- util:PermissionEx restricts SCM access: only Administrators +
  SYSTEM can start/stop/reconfigure service. Authenticated Users
  limited to QueryStatus/QueryConfig/Interrogate
- Vital="yes" on ServiceInstall

Docs & roadmap:
- PRODUCTION_ROADMAP.md: 5-milestone plan (security + features +
  distribution + ops) with granular tasks, effort, done-when
- CLIENT_SECURITY_AUDIT.md, SECURITY_FIXES.md, DEPLOYMENT.md
- AI assistant rules (.cursorrules, .antigravityrules, etc.)

Build & distribution:
- build-msi.ps1, deploy-and-sign.ps1, sign-release.ps1
- redeploy.ps1, tray-deploy.ps1, test-msi.ps1
- installer/msi/ alternative WXS setup
- Restored .github/workflows/ removed in mirror cleanup

.gitignore hardened: *.pfx, *.p12, *.key, *.pem, .env*
2026-04-22 15:18:11 +07:00

2.4 KiB

name, description, allowed-tools
name description allowed-tools
api-patterns API design principles and decision-making. REST vs GraphQL vs tRPC selection, response formats, versioning, pagination. Read, Write, Edit, Glob, Grep

API Patterns

API design principles and decision-making for 2025. Learn to THINK, not copy fixed patterns.

🎯 Selective Reading Rule

Read ONLY files relevant to the request! Check the content map, find what you need.


📑 Content Map

File Description When to Read
api-style.md REST vs GraphQL vs tRPC decision tree Choosing API type
rest.md Resource naming, HTTP methods, status codes Designing REST API
response.md Envelope pattern, error format, pagination Response structure
graphql.md Schema design, when to use, security Considering GraphQL
trpc.md TypeScript monorepo, type safety TS fullstack projects
versioning.md URI/Header/Query versioning API evolution planning
auth.md JWT, OAuth, Passkey, API Keys Auth pattern selection
rate-limiting.md Token bucket, sliding window API protection
documentation.md OpenAPI/Swagger best practices Documentation
security-testing.md OWASP API Top 10, auth/authz testing Security audits

Need Skill
API implementation @[skills/backend-development]
Data structure @[skills/database-design]
Security details @[skills/security-hardening]

Decision Checklist

Before designing an API:

  • Asked user about API consumers?
  • Chosen API style for THIS context? (REST/GraphQL/tRPC)
  • Defined consistent response format?
  • Planned versioning strategy?
  • Considered authentication needs?
  • Planned rate limiting?
  • Documentation approach defined?

Anti-Patterns

DON'T:

  • Default to REST for everything
  • Use verbs in REST endpoints (/getUsers)
  • Return inconsistent response formats
  • Expose internal errors to clients
  • Skip rate limiting

DO:

  • Choose API style based on context
  • Ask about client requirements
  • Document thoroughly
  • Use appropriate status codes

Script

Script Purpose Command
scripts/api_validator.py API endpoint validation python scripts/api_validator.py <project_path>