skills/stack-react-native-expo/SKILL.md
Integration patterns for Expo + React Navigation + Zustand + MMKV + TanStack Query
npx skillsauth add xoai/sage stack-react-native-expoInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Layer 3 — Stack Composition
Integration patterns for the most common React Native stack: Expo + Expo Router/React Navigation + Zustand + MMKV + TanStack Query.
Each tool's docs explain how it works alone. They don't explain how they work together: where the Zustand store plugs into the navigation guard, how MMKV persistence integrates with Zustand hydration, how TanStack Query's cache interacts with offline state, how Expo Router layouts compose with auth flows.
These integration seams are where bugs live. This pack documents the gaps.
| Type | Files | Coverage | |------|-------|----------| | Integration | 4 | Expo Router + auth, Zustand + MMKV persistence, TanStack Query + offline, project structure | | Anti-patterns | 3 | Auth in wrong layer, store hydration race, query key chaos | | Constitution | 1 | 4 stack integration principles |
tools
Captures agent mistakes, corrections, and discovered gotchas so they are not repeated. Use when: (1) a command or operation fails unexpectedly, (2) the user corrects the agent, (3) the agent discovers non-obvious behavior through debugging, (4) an API or tool behaves differently than expected, (5) a better approach is found for a recurring task. Also searches past learnings before starting tasks to avoid known pitfalls. Activate alongside the sage-memory skill — they share the same MCP backend but serve different purposes (sage-memory = codebase knowledge, sage-self-learning = agent mistakes and gotchas).
development
Typed knowledge graph stored in sage-memory. Use when creating or querying structured entities (Person, Project, Task, Event, Document), linking related objects, checking dependencies, planning multi-step actions as graph transformations, or when skills need to share structured state. Trigger on "remember that X is Y", "what do I know about", "link X to Y", "show dependencies", "what blocks X", entity CRUD, cross-skill data access, or any request involving structured relationships between things.
tools
Integrates sage-memory into Sage workflows. Teaches the agent when to remember (store findings during work), when to recall (search memory at session start and task start), and how to learn (structured knowledge capture via sage learn). Use when the user mentions memory, remember, recall, learn, capture knowledge, onboard to codebase, or when starting any session where sage-memory MCP tools are available.
tools
Captures agent mistakes, corrections, and discovered gotchas so they are not repeated. Use when: (1) a command or operation fails unexpectedly, (2) the user corrects the agent, (3) the agent discovers non-obvious behavior through debugging, (4) an API or tool behaves differently than expected, (5) a better approach is found for a recurring task. Also searches past learnings before starting tasks to avoid known pitfalls. Activate alongside the sage-memory skill — they share the same MCP backend but serve different purposes (sage-memory = codebase knowledge, sage-self-learning = agent mistakes and gotchas).