epicenterhq
50 verified skills221,381 total stars
single-or-array-pattern
Pattern for functions that accept either a single item or an array. Use when creating CRUD operations, batch processing APIs, or factory functions that should flexibly handle one or many inputs.
development4,428
factory-function-composition
Apply factory function patterns to compose clients and services with proper separation of concerns. Use when creating functions that depend on external clients, wrapping resources with domain-specific methods, or refactoring code that mixes client/service/method options together.
tools4,428
git
Git commit and pull request guidelines using conventional commits. Use when the user says "commit this", "stage and commit", "write a commit message", "create a PR", or when creating commits, writing commit messages, or reviewing PR descriptions.
documentation4,428
frontend-design
Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, artifacts, posters, or applications (examples include websites, landing pages, dashboards, React components, HTML/CSS layouts, or when styling/beautifying any web UI). Generates creative, polished code and UI design that avoids generic AI aesthetics.
development4,428
honesty
Behavioral guideline for providing brutally honest feedback. Use always - this skill defines core interaction expectations for code review and technical discussions.
development4,428
svelte
Svelte 5 patterns including runes ($state, $derived, $props), TanStack Query, SvelteMap reactive state, shadcn-svelte components, and component composition. Use when the user mentions .svelte files, Svelte components, or when using TanStack Query, fromTable/fromKv, or shadcn-svelte UI.
development4,428
tauri
Tauri path handling, cross-platform file operations, and API usage. Use when the user mentions Tauri, desktop app, or when working with file paths in Tauri frontend code, accessing native filesystem APIs, invoking Tauri commands, or handling platform differences.
development4,428
technical-articles
Write technical articles and blog posts with depth and honest trade-offs. Use when the user says "write a blog post", "draft an article", "write about this", or when creating articles in docs/articles/ explaining patterns, techniques, or lessons learned.
documentation4,428
testing
Test file conventions for setup functions, factory patterns, test organization, type testing, and naming. Use when the user says "write tests", "add a test", "fix this test", or when writing or modifying *.test.ts files, creating test setup functions, or reviewing test structure.
testing4,428
rust-errors
Rust to TypeScript error handling patterns for Tauri apps. Use when the user mentions Rust errors, Tauri command errors, invoke errors, or when defining Rust error types for TypeScript consumption or creating discriminated union error types from Rust.
development4,428
error-handling
Error handling patterns using wellcrafted trySync and tryAsync, and toastOnError for surfacing errors to users. Use when writing or reviewing try-catch blocks, refactoring try-catch to linear control flow, working with Result types, showing error toasts, or returning HTTP error responses from route handlers.
development4,428
typescript
TypeScript code style, type co-location, naming conventions (including acronym casing), and arktype patterns. Use when the user mentions TypeScript types, naming conventions, or when writing .ts files, defining types, naming variables/functions, or organizing test files.
development4,428
services-layer
Service layer patterns with defineErrors, namespace exports, and Result types. Use when the user says "create a service", "service layer", or when creating new services, defining domain-specific errors, or understanding the service architecture.
testing4,428
autumn
Integrate Autumn billing—define features/plans in autumn.config.ts, use autumn-js SDK for credit checks/tracking, manage the atmn CLI for push/pull. Use when working on billing, pricing, credits, plan gating, or metered usage.
tools4,428
better-auth-best-practices
Configure Better Auth server and client, set up database adapters, manage sessions, add plugins, and handle environment variables. Use when users mention Better Auth, betterauth, auth.ts, or need to set up TypeScript authentication with email/password, OAuth, or plugin configuration.
tools4,428
better-auth-security-best-practices
Configure rate limiting, manage auth secrets, set up CSRF protection, define trusted origins, secure sessions and cookies, encrypt OAuth tokens, track IP addresses, and implement audit logging for Better Auth. Use when users need to secure their auth setup, prevent brute force attacks, or harden a Better Auth deployment.
development4,428
change-proposal
Present proposed code changes visually before implementing. Use when the user says "show me options", "compare approaches", "what should we do", or when multiple approaches exist, changes span multiple files, or architecture decisions need before/after comparison.
development4,428
create-auth-skill
Scaffold and implement authentication in TypeScript/JavaScript apps using Better Auth. Detect frameworks, configure database adapters, set up route handlers, add OAuth providers, and create auth UI pages. Use when users want to add login, sign-up, or authentication to a new or existing project with Better Auth.
development4,428
define-errors
How to define and use defineErrors from wellcrafted. Use when creating new error types, updating error definitions, or reviewing error patterns. Covers variant factories, extractErrorMessage for cause, InferErrors/InferError for types, and call site patterns.
tools4,428
discord-voice
Discord and casual chat voice for team conversations, PR feedback, and contributor interactions. Use when drafting Discord messages, chat replies, or any informal team communication.
databases4,428
elysia
Elysia.js server patterns for error handling, status responses, and plugin composition. Use when the user mentions Elysia, Eden Treaty, or when writing API route handlers, returning HTTP errors, creating server plugins, or working with type-safe API clients.
tools4,428
email-and-password-best-practices
Configure email verification, implement password reset flows, set password policies, and customise hashing algorithms for Better Auth email/password authentication. Use when users need to set up login, sign-in, sign-up, credential authentication, or password security with Better Auth.
development4,428
handoff-prompt
Draft a self-contained implementation prompt that an agent can execute with zero prior context. Use when the user says "draft a prompt", "write a handoff", "make a prompt I can copy-paste", "create a delegation brief", or wants to hand off a task to another agent, tool, or conversation.
tools4,428
incremental-commits
Break multi-file changes into atomic commits ordered by dependency. Use when the user says "split this into commits", "commit strategy", "break this up", or when making refactors, breaking API changes, or features touching 3+ files that need clean git history.
development4,428
method-shorthand-jsdoc
Move helper functions into return objects using method shorthand for proper JSDoc preservation. Use when factory functions have internal helpers that should expose documentation to consumers, or when hovering over returned methods shows no JSDoc.
tools4,428
monorepo
Monorepo script commands, package boilerplate, and conventions for this codebase. Use when the user says "how do I run", "bun run", "build this", "run tests", "typecheck", "create a new package", or when running builds, tests, formatting, linting, type checking, or scaffolding new packages.
development4,428
organization-best-practices
Configure multi-tenant organizations, manage members and invitations, define custom roles and permissions, set up teams, and implement RBAC using Better Auth's organization plugin. Use when users need org setup, team management, member roles, access control, or the Better Auth organization plugin.
tools4,428
refactoring
Systematic code audit and refactoring methodology—caller counting, type safety boundaries, inlining single-use extractions, keeping trivial duplications inline over premature extraction, collapsing duplicate branches, and surgical commits. Use when cleaning up code, auditing for code smells, refactoring modules, or reviewing internal function structure.
development4,428
social-media
Social media post guidelines for LinkedIn, Reddit, and Twitter/X. Use when the user says "post on LinkedIn", "write a tweet", "draft a Reddit post", "share this", or when drafting announcements or sharing technical content on social platforms.
testing4,428
spec-execution
Execute a specification document through planned waves of parallel and sequential changes, updating the spec and committing after each wave. Use when the user says "execute this spec", "implement this plan", "run the spec", or when given a specs/*.md file to implement.
testing4,428
specification-writing
Write technical specifications that give agents enough context to implement features autonomously. Use when the user says "write a spec", "plan this feature", "create a planning doc", or when planning features, documenting architecture decisions, or creating implementation guides.
testing4,428
styling
CSS and Tailwind styling guidelines for this codebase. Use when the user says "style this", "fix the CSS", "add classes", "not scrolling", "overflow", or when writing Tailwind utilities, using cn(), creating UI components, reviewing CSS code, fixing scroll/overflow issues in flex layouts, or deciding on wrapper element structure.
development4,428
sync-construction-async-property-ui-render-gate-pattern
Sync construction with async property pattern for module-exportable clients. Use when the user says "async init", "module-level async", or when creating clients that need async initialization but must be exportable from modules and usable synchronously in UI components.
tools4,428
typebox
TypeBox and TypeMap patterns for runtime schema validation and JSON Schema generation. Use when the user mentions TypeBox, TypeMap, Standard Schema, or when working with runtime type validation, JSON Schema, or schema-based validation.
databases4,428
workspace-api
Workspace API patterns for defineTable, defineKv, versioning, migrations, data access (CRUD + observation), withActions, and extension ordering. Use when the user mentions workspace, defineTable, defineKv, createWorkspace, withActions, withExtension, defineQuery, defineMutation, connectWorkspace, or when defining schemas, reading/writing table data, observing changes, writing migrations, chaining extensions, or attaching actions to a workspace client.
tools4,428
writing-voice
Voice and tone rules for all written content—prose, UI text, tooltips, error messages. Use when the user says "fix the tone", "rewrite this", "sounds like AI", "sounds corporate", or when writing any user-facing text, landing pages, product copy, or open-source documentation.
tools4,428
yjs
Yjs CRDT patterns, shared types (Y.Map, Y.Array, Y.Text), conflict resolution, and document storage. Use when the user mentions Yjs, Y.Doc, CRDTs, collaborative editing, or when handling shared types, implementing real-time sync, or optimizing document storage.
documentation4,428
web-design-guidelines
Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit design", "review UX", or "check my site against best practices".
development4,428
drizzle-orm
Drizzle ORM patterns for type branding, custom types, and SQLite column definitions. Use when the user mentions Drizzle, drizzle-orm, or when working with database schemas, branded column types, or custom type conversions in Drizzle.
data-ai4,428
query-layer
Query layer patterns for consuming services with TanStack Query, error transformation, and runtime dependency injection. Use when the user mentions createQuery, createMutation, TanStack Query, or when implementing queries/mutations, transforming errors for UI, or adding reactive data management.
development4,428
progress-summary
This skill should be used when the user asks questions like "can you summarize", "what happened", "what did we do", "what's the situation", "where are we at", "explain what's going on", "give me an overview", "what's been done", "tell me about this", "walk me through what happened", or any question asking to understand the current state of work or changes. Provides conversational, PR-style summaries with visual diagrams.
development4,428
github-issues
GitHub issue comment guidelines for community interaction. Use when the user says "respond to this issue", "reply to this bug report", "close this issue", or when responding to GitHub issues, bug reports, feature requests, or any GitHub discussion.
documentation4,428
documentation
In-code documentation, folder READMEs, and code comments. Use when the user says "document this", "add JSDoc", "write a README", "explain this code", or when writing README.md files, JSDoc comments, or code organization docs.
development4,428
control-flow
Human-readable control flow patterns for early returns, guard clauses, and linearizing nested logic. Use when the user says "simplify this", "flatten these conditions", "too many nested ifs", or when refactoring nested conditionals, replacing try-catch with linear flow, or restructuring decision logic.
development4,428
grill-me
Interview the user relentlessly about a plan or design until reaching shared understanding, resolving each branch of the decision tree. Use when user wants to stress-test a plan, get grilled on their design, or mentions "grill me".
testing4,428
two-factor-authentication-best-practices
Configure TOTP authenticator apps, send OTP codes via email/SMS, manage backup codes, handle trusted devices, and implement 2FA sign-in flows using Better Auth's twoFactor plugin. Use when users need MFA, multi-factor authentication, authenticator setup, or login security with Better Auth.
tools4,428
workflow
Standard workflow for implementing features with specs and planning documents. Use when the user says "start a new feature", "how should I plan this", "what's the process", or when starting implementation, planning work, or working on any non-trivial task.
documentation4,428
encryption
Encryption patterns for HKDF key derivation, XChaCha20-Poly1305 symmetric encryption, encrypted blob formats, key hierarchy, and key rotation. Use when the user says "encrypt this", "add encryption", "key management", or when working with crypto primitives, encrypted CRDT values, or the EncryptedBlob type.
development4,428
arktype
Arktype patterns for runtime validation, discriminated unions with .merge() and .or(), spread key syntax, and type composition. Use when the user mentions arktype, type(), or when building union types, combining schemas with variants, or defining command/event schemas.
development4,419
approachability-audit
Review code from the perspective of a new TypeScript developer. Use when the user asks whether code feels wrong, too indirect, too clever, hard to follow, or wants a pass focused on unnecessary abstractions, misleading names, layered type tricks, and first-read clarity.
development4,418