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SkillsMP has collected 72 skills from EpicenterHQ/epicenter. Open a skill to review its source and details.
Showing 40 of 72 collected skills.
Create, revise, place, audit, evaluate, and validate repository agent instructions across AGENTS.md, CLAUDE.md, and `.agents/skills`. Use when adding or moving agent rules, deciding whether guidance belongs globally or in a skill or reference, writing or…
Give Claude one fresh, read-only, evidence-seeking independent judgment on a bounded question. Use when the user asks Codex to consult Claude or when an independent investigation would materially reduce risk in a high-stakes, ambiguous, architectural,…
Launch and follow one durable Claude Code session that independently leads and implements a substantial mission. Use when the user asks Codex to have Claude execute or hand off the work, or when an ambitious, exploratory, multi-file task would benefit from a…
Draft a compact, cold-start prompt for the user to copy and paste into a manually operated Claude Code session, with Claude leading the mission and Codex optionally available through /codex:rescue. Use only when the user explicitly asks for a prompt, manual…
Detect and collapse production code that was split into two pieces (a 'pure' inner function and a thin wrapper/handler/component that calls it) for the single purpose of letting a unit test reach the inner piece. The smell is structure shaped by the test…
Factory function patterns to compose clients and services. Use when wrapping resources with domain methods or refactoring mixed client/service/method options.
Method shorthand in return objects for JSDoc preservation. Use when factory functions have internal helpers that should expose docs, or hovering over returned methods shows no JSDoc.
TypeBox patterns for runtime schema validation and JSON Schema generation. Use when mentioning TypeBox, Standard Schema, or schema-based validation.
How a workspace-backed app under `apps/*` is composed: the isomorphic doc factory (`create<App>`), the environment factories (`open<App>Browser` / `open<App>Extension` / tauri) with the one boot call (`connect(toConnection(auth, nodeId))`, ADR-0088/ADR-0094),…
Yjs 14 CRDT patterns for Epicenter row documents: @y/y shared types, transactions, updateV2 persistence, row-addressed synchronization, awareness, conflict resolution, and document storage. Use when mentioning Yjs, Y.Doc, CRDTs, collaborative editing,…
Run a continuous collapse-and-simplify pass that surgically removes indirection failing to earn its boundary. Use when the user says 'collapse pass', 'simplify pass', 'reduce indirection', 'shrink the surface', 'find what to delete', when asking to audit a…
Monorepo scripts, package boilerplate, conventions. Use when: "how do I run", "bun run", "build this", "run tests", "typecheck", "create a new package", linting, scaffolding packages.
TypeScript config conventions for this monorepo: the two-base layering, the eight leaf tiers, and the never-redeclare list. Use when adding a package, editing any tsconfig.json, picking a tier for a new app, or debugging module resolution.
Guide sentence-level expression while drafting or revising substantial prose so it sounds like the writer on their clearest day, preserving vocabulary, humor, certainty, emotional emphasis, and relative allocation of attention. Use for tone work, rewrites, UI…
Audit Codex desktop tasks as ownership, preserve explicitly desired but unowned outcomes in a repository-local BACKLOG.md, and archive completed or superseded Codex chats without losing their history. Use when active Codex tasks have accumulated, the user…
Svelte 5 component and state-module patterns for Epicenter apps. Use when editing `.svelte`, `.svelte.ts`, or Svelte UI state code involving runes, `$props`, snippets, keyed lifecycles, `{#await}`, TanStack Query, `SvelteMap`/`SvelteSet`, `createSubscriber`,…
Help two participants with rich private models use concrete proposals and directional reactions to make latent taste legible, converging through a naturally paced conversation on either a shared explanatory model or an explicitly accepted destination before…
Greenfield clean-break review and execution for starting from an uncompromised target vision, working backward to deletion waves and owner changes, reopening settled decisions, refusing compatibility, collapsing old and new paths, moving ownership boundaries,…
Epicenter workspace API patterns: `defineWorkspace`, `defineTable`, `defineKv`, table `.docs(...)`, migrations, actions, `connect(...)`, `mount(...)`, materializers, and lower-level `createWorkspace` / `openCollaboration` primitives. Use when editing…
Use when a task seems trapped inside the current abstraction, an abstraction feels poorly designed, a proposed change looks like a band-aid, a fix keeps spreading across layers, or the user asks to think bigger, reconsider the whole unit, redesign from…
Query boundaries with TanStack Query and Wellcrafted Results. Use when editing createQuery, createMutation, resultQueryOptions, resultMutationOptions, defineQuery, defineMutation, defineKeys, shared cache identity, mutation lifecycle, or service-to-TanStack…
Whispering service boundaries: UI-free capabilities, explicit app inputs, Result-typed fallibility, direct Live objects, lifecycle-earned factories, and build-time #platform implementations. Use when creating or refactoring services, service contracts,…
defineErrors from wellcrafted: variant factories, extractErrorMessage, InferErrors/InferError, call site patterns. Use when creating error types or reviewing error patterns.
Adapt thrown or rejected operations into wellcrafted Results and consume Result values without swallowing failures. Use when replacing try-catch, adding trySync or tryAsync, choosing fallback versus typed propagation or selective rethrow, forwarding Err,…
wellcrafted/logger for library diagnostics: 5 levels, typed errors, injected sinks, and host-owned durability. Use for attach primitives, background errors, durable host logs, or replacing console.* in library code.
Design, explore, implement, polish, redesign, and review Epicenter interfaces from product direction through component-system collapse. Use when co-designing a screen, asking "what do other apps do", comparing UI directions or comparable apps, turning a rough…
Present proposed code changes visually before implementing: before/after diffs, ASCII diagrams, comparison tables. Use when: "show me options for this change", "compare approaches", or a multi-file change needs a before/after comparison before editing. Not…
In-code documentation, folder READMEs, code comments. Use when: "document this", "add JSDoc", "write a README", "explain this code", or writing README.md/JSDoc.
Write technical specs that let agents implement autonomously. Use for "write a spec", "plan this feature", "create a planning doc".
Technical articles and blog posts with honest trade-offs. Use when: "write a blog post", "draft an article", "write about this", creating articles in docs/articles/.
First-read approachability lens. Read code as a newly onboarded TypeScript developer to surface indirection, misleading names, type-system-only tricks, and wrong-owner boundaries. Cited by post-implementation-review and collapse-pass as their readability…
Fresh-context review and adversarial review for concrete diffs, state machines, type shapes, lifecycle boundaries, and confusing abstractions. Use when the user asks for "fresh-context review", "fresh eyes", an independent reviewer, adversarial review of a…
Hub for the broad post-implementation review and second-read pass after an implementation: list every touched file as an ASCII tree, mentally inline helpers, audit dead paths and stale imports, name invariant owners, sanity-check API shape and naming, and…
Find the small promise to refuse when preserving it forces a large implementation family: trade a measured amount of fidelity, compatibility, modes, or reproducibility to delete disproportionate complexity. Use when the user says "asymmetric wins",…
CSS and Tailwind, cn(), flex layouts. Use for "style this", "fix the CSS", "add classes", "not scrolling", "overflow", Tailwind utilities.
TanStack Table UI state patterns for @tanstack/svelte-table, @tanstack/table-core, createTable, ColumnDef, FlexRender, renderComponent, sorting, filtering, pagination, row identity, and local table markup composition. Use when building or reviewing Svelte…
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".
Tauri commands, permissions, capabilities, security config, path handling, cross-platform file ops, and native filesystem APIs. Use when mentioning Tauri, desktop apps, Rust commands, invoke, capabilities, permissions, ResourceId, file paths, or platform…
TypeScript project conventions: derived types, type placement, acronym casing, imports, generics, factories, and runtime schema patterns. Use when editing `.ts` files, defining exported types, reviewing type names, or organizing type tests.
Control flow: early returns, guard clauses, linearizing nested logic. Use for "flatten these conditions", "too many nested ifs", "linearize this try-catch", or handlers mixing throw and return. For a broad "simplify this" pass over a diff or package, use…