epicenterhq/epicenter

1

co-design Run an interactive product design pass before implementing UI. Use when the user asks to co-design, explore UI direct…

epicenterhq/epicenter

8

2

create-auth-skill Scaffold and implement authentication in TypeScript/JavaScript apps using Better Auth. Detect frameworks, configure d…

epicenterhq/epicenter

8

3

discord-voice Discord and casual chat voice for team conversations, PR feedback, and contributor interactions. Use when drafting Di…

epicenterhq/epicenter

8

4

encryption Encryption: HKDF, XChaCha20-Poly1305, blob formats, key hierarchy/rotation. Use for "encrypt this", "key management",…

epicenterhq/epicenter

8

5

tanstack-ai TanStack AI patterns for @tanstack/ai, @tanstack/ai-svelte, chat state, streamed responses, UIMessage parts, tool cal…

epicenterhq/epicenter

8

6

attach-primitive Contract and invariants for `attach*` composition primitives in `packages/workspace` (side-effectful building blocks …

epicenterhq/epicenter

7

7

hono Hono patterns for TypeScript API routes, middleware, request and response typing, streaming, WebSockets, and Cloudfla…

epicenterhq/epicenter

7

8

logging wellcrafted/logger for library diagnostics: 5 levels, typed errors, injected sinks, and host-owned durability. Use fo…

epicenterhq/epicenter

7

9

tanstack-table TanStack Table UI state patterns for @tanstack/svelte-table, @tanstack/table-core, createTable, ColumnDef, FlexRender…

epicenterhq/epicenter

7

10

auth Epicenter auth packages: `@epicenter/auth` and the Svelte wrapper at `@epicenter/svelte/auth`, OAuth sessions, identi…

epicenterhq/epicenter

6

11

epicenter-ui Epicenter UI component selection and composition patterns for Svelte apps using @epicenter/ui. Use when choosing or r…

epicenterhq/epicenter

6

12

fresh-eyes-grill Fresh-context adversarial review for staged diffs, state machines, type shapes, lifecycle boundaries, and confusing a…

epicenterhq/epicenter

6

13

one-sentence-test Force one concrete sentence to find orphaned surfaces, duplicate verbs, inert abstractions. Use for "what does X do",…

epicenterhq/epicenter

6

14

post-implementation-review Review completed implementation work for dead paths, stale imports, invariant ownership, and API shape, then delegate…

epicenterhq/epicenter

6

15

sveltekit Apply SvelteKit patterns for routing, server modules, form actions, hooks, cookies, adapters, and invalidation. Use w…

epicenterhq/epicenter

6

16

type-level-error-messages Make TypeScript errors readable with template-literal constraint messages. Use when constraining literal object keys …

epicenterhq/epicenter

6

17

ui-design Design and review Epicenter interfaces while collapsing local UI primitives into the shared component system. Use whe…

epicenterhq/epicenter

6

18

cohesion-over-testability Detect and collapse production code that was split into two pieces (a 'pure' inner function and a thin wrapper/handle…

epicenterhq/epicenter

5

19

cohesive-clean-breaks Breaking-change and clean-break mechanics for decisions that change public shape, package boundaries, runtime contrac…

epicenterhq/epicenter

5

20

collapse-pass Remove indirection that does not earn its boundary across a diff or package. Use when the user asks to run a collapse…

epicenterhq/epicenter

5

21

comparable-apps List 3-5 comparable apps when planning a UX surface to test category fit and surface high-leverage refusals. Use for …

epicenterhq/epicenter

5

22

content-distribution Turn one real idea, Fuji markdown entry, article, photo, screenshot, code diff, spec excerpt, or diagram into platfor…

epicenterhq/epicenter

5

23

notebook-explanation Explain technical systems in a notebook style: short working notes, small code blocks, ASCII diagrams, concrete examp…

epicenterhq/epicenter

5

24

pull-request Draft and review durable GitHub pull request titles and bodies for Epicenter. Use when creating a PR, running gh pr c…

epicenterhq/epicenter

5

25

skill-creator Create, revise, evaluate, and validate Vercel-backed Agent Skills for this repository. Use when writing a new skill, …

epicenterhq/epicenter

5

26

tsconfig TypeScript config conventions for this monorepo: the two-base layering, the seven leaf tiers, and the never-redeclare…

epicenterhq/epicenter

5

27

turso Turso and libSQL patterns for embedded SQLite-compatible databases, serverless drivers, sync engines, partial sync, W…

epicenterhq/epicenter

5

28

workspace-app-composition How a workspace-backed app under `apps/*` is composed: the isomorphic doc factory (`create<App>`), the environment fa…

epicenterhq/epicenter

5

29

greenfield-clean-breaks Greenfield clean-break review for refusing compatibility, finding inconsistent ownership, and deleting unearned branc…

epicenterhq/epicenter

4

30

radical-options Compare a current approach with a cleaner design from first principles before editing. Use when an abstraction feels …

epicenterhq/epicenter

4

31

standalone-commits Make commits reviewable and auditable as self-contained units, and order multi-file changes into atomic dependency-or…

epicenterhq/epicenter

4

32

wxt WXT browser extension patterns for entrypoints, background service workers, content scripts, side panels, storage, pe…

epicenterhq/epicenter

4

33

agent-instruction-hygiene Review AGENTS.md, CLAUDE.md, and `.agents/skills` for instruction sprawl, duplicated guidance, routing overlap, and m…

epicenterhq/epicenter

3

34

asymmetric-wins Find the small product refusal that collapses a large implementation graph: refuse 10-20 percent of functionality to …

epicenterhq/epicenter

3

35

grill-me Interview the user relentlessly about a plan to reach shared understanding, resolving each branch of the decision tre…

epicenterhq/epicenter

3

36

worktree-hygiene Safely reap merged Git worktrees and branches across Epicenter harnesses. Use when cleaning `git worktree list`, remo…

epicenterhq/epicenter

3

37

claude-code-consult Use when the user asks to consult Claude, ask Claude Code, get another model's take, run a taste check, grill a desig…

epicenterhq/epicenter

2

38

govuk-style Write and edit in GOV.UK / GDS house style: plain English, active voice, front-loaded content, sentence case, and no …

epicenterhq/epicenter

2

39

taste-review Ask Claude Code to make a taste-driven call on something ambiguous — UI polish, prose phrasing, naming, formatting. U…

epicenterhq/epicenter

2