404-page
01Skill Claude CodeCodex
Use when the app needs branded 404 and 500 error pages and a way to raise not-found from LiveViews. Covers install, the Fallback exception, and tweaking the templates.
Skill Claude CodeCodex
Use when the app needs branded 404 and 500 error pages and a way to raise not-found from LiveViews. Covers install, the Fallback exception, and tweaking the templates.
Skill Claude CodeCodex
Use when the app needs an admin-only dashboard at /admin for managing users, teams, and admins, with charts, impersonation, and the LiveDashboard. Covers install, configuration, and tweaks.
Skill Claude CodeCodex
Use when adding LLM features to Phoenix and Elixir apps. Covers shared agent configuration, module naming, structured outputs, and freeform text/code generation.
Skill Claude CodeCodex
Build raw LLM helpers for text, code, markdown, and opportunistic JSON using Req. Use when output does not need a strict response schema.
Skill Claude CodeCodex
Build typed AI agents with InstructorLite and Ecto embedded schemas. Use when LLM output must be validated and returned as structured Elixir data.
Skill Claude CodeCodex
Use when the app needs user accounts, sign-in, and roles. Covers installing phx.gen.auth-based auth with role-based access, profiles, and admin bootstrapping, plus how to tweak it.
Skill Claude CodeCodex
Use when authenticated routes must be gated behind email confirmation, redirecting users whose confirmedat is nil to a confirmation page. Covers install, configuration, and tweaks for the confirmation gate.
Skill Claude CodeCodex
Use when the app needs a Cmd+K/Ctrl+K command palette for quick navigation and search. Covers installing the LiveView palette, its protocol-based result formatting, and how to make resources searchable.
Skill Claude CodeCodex
Ecto multi patterns and guidance. Use when designing schemas, queries, or operations involving multi-step transactions.
Skill Claude CodeCodex
Use when the app needs database-backed error tracking without an external SaaS. Covers installing ErrorTracker with automatic Phoenix/LiveView/Oban reporting, migrations, pruning, and a dashboard.
Skill Claude CodeCodex
Use when the app needs runtime feature toggles, gradual rollouts, or an emergency kill switch without redeploying. Covers installing FunWithFlags with Ecto + PubSub, the app-owned wrapper APIs, and per-user/per-team gating.
Skill Claude CodeCodex
Use when the app needs a health check endpoint for a load balancer or uptime monitor. Covers installing plugcheckup at /health, configuring checks, and adding custom checkups.
Skill Claude CodeCodex
Use when emails need to render reliably across clients. Covers installing Premailex-based HTML email layouts with inline CSS and plain-text fallbacks, plus how to wire and tweak notifiers.
Skill Claude CodeCodex
Use when the app needs distinct layouts for authenticated pages, login/registration, and public marketing pages instead of Phoenix's single default layout. Covers install, the three layout modules, and how to tweak nav, logo, and avatar.
Skill Claude CodeCodex
Use when the app needs to let users switch UI language at runtime. Covers installing the Gettext-backed locale picker dropdown, its router/LiveView wiring, and how to add locales.
Skill Claude CodeCodex
Use when the app needs social sign-in (GitHub OAuth) on top of existing authentication. Covers installing Ueberauth, the user-identity linking flow, configuration, and how to add more providers.
Skill Claude CodeCodex
Use when the app needs background jobs, scheduled/cron tasks, or async work off the request path. Covers installing Oban + Oban Web, queue config, the migration, test mode, and writing workers.
Skill Claude CodeCodex
Use when the app needs an audit trail or undo — track every insert/update/delete on records, see who changed what, and revert. Covers install, configuration, and tweaks for PaperTrail versioning.
Skill Claude CodeCodex
Use when the app needs to charge users — subscriptions or one-time purchases. Covers installing the billing facade, choosing a provider (Stripe subscriptions to start), configuring keys, and wiring a checkout flow.
Skill Claude CodeCodex
Use when the app needs recurring billing via Stripe-hosted Checkout. Covers installing the MyApp.Billing Stripe provider, its config, and how to wire checkout and webhooks.
Skill Claude CodeCodex
Use when the app needs to throttle requests or failed logins by IP or email. Covers installing Hammer + RemoteIp, the MyApp.RateLimit helpers, and how to tweak limits.
Skill Claude CodeCodex
Use when the app needs an XML sitemap and robots.txt for search-engine indexing. Covers installing a Phoenix SitemapController, the XML template, and how to add static or dynamic URLs.
Skill Claude CodeCodex
Use when the app needs multi-tenancy — multiple users sharing data under teams, with personal teams, memberships, roles, and team switching. Covers install, scope-based tenant isolation, and tweaks.
Skill Claude CodeCodex
Use when wiring or customizing the teams invitation flow — emailing a user to join a team, the Swoosh notifier, and accepting an invite on sign-in.