fullstack-toolkit

Standard Schema socka contracts (defineSocka), v1 wire envelopes, SockaSession/SockaWebSocketClient, React useSockaSession and SockaSessionProvider, SockaError.

SockaDoSession and SockaWebSocketDO on Cloudflare Durable Objects—contract, handlers, wireFormat, SockaError; extends websocket-do BaseSession.

Standard Schema v1 for socka contracts and wire validation—Zod, Valibot, or any compatible library; no Zod-only public surface.

Enforce strict TypeScript typing without escape hatches. Never use `any`, `as` casts to bypass the compiler, or similar workarounds—find the proper typed solution instead.

React Router v7 routing patterns and environment variable configuration. Use when adding routes, configuring routing, or setting up environment variables.

Read when implementing multi-phase work after a plan exists. Mandatory—mkdir+touch then Write/StrReplace (no heredocs), update the temp punch list at every phase boundary, one item at a time, per-phase tests. Complements punch-list-planning for authors.

Read when authoring implementation plans, phased roadmaps, or CreatePlan output for multi-step code work. Ensures the plan hands off a mandatory temp punch list and tells the executor which skill to follow.

Cloudflare Workers/Wrangler workflow for generating typed env bindings. NEVER manually edit worker configuration declaration files; always regenerate them via typegen.

Use switch statements with an exhaustive default for discriminated unions and enum-like types. Use when handling union types with a discriminant (e.g. type field), message shapes, or variant types.

Component organization patterns for React applications. Use when creating components, organizing files, or structuring routes. ALWAYS keep 1 component per file and routes simple.

Guide for creating new Agent Skills when patterns emerge or improvements are needed. Use when encountering repeated patterns, making the same mistakes, discovering better approaches, or receiving user corrections.

React patterns for callbacks, event handlers, and module-level constants. Use when writing React components, implementing event handlers, or defining constants.