You: "How do I handle errors in useEffect?"

Claude: [Checks Sensei]
        → Knows you understand promises, are learning React hooks
        → Knows you're building a fintech app with Supabase

Claude: "Since you're comfortable with try/catch from your async work,
        the pattern in useEffect is similar. For your Supabase queries..."

{
  "mcpServers": {
    "sensei": {
      "command": "npx",
      "args": ["-y", "@sensei-mcp/sensei"]
    }
  }
}

2025-01-14: explained "useEffect cleanup" (react-hooks)
2025-01-13: explained "async/await" (javascript)

Project: fintech-app
Stack: React, TypeScript, Supabase
Notes: "REST API with row-level security"

useEffect requires:
├── react-hooks (concept of hooks)
├── closures (effects close over state)
└── side-effects (what effects are for)

style: concise | detailed | example-heavy
languages: ["typescript", "python"]

# Clone
git clone https://github.com/your-username/sensei
cd sensei

# Install
npm install

# Build
npm run build

# Run locally
node dist/index.js

sensei/
├── src/
│   ├── index.ts          # MCP server entry
│   ├── db/               # SQLite database layer
│   │   ├── init.ts       # Database initialization
│   │   ├── skills.ts     # Skills CRUD
│   │   ├── history.ts    # History CRUD
│   │   ├── project.ts    # Project context
│   │   └── preferences.ts
│   └── tools/            # MCP tool handlers
│       ├── index.ts      # Tool registration
│       ├── handlers.ts   # Tool implementations
│       └── prerequisites.ts
├── knowledge/
│   └── prerequisites.json  # Concept prerequisite graph
├── PROMPT.md             # System prompt for Claude
└── README.md

# Edit knowledge/prerequisites.json
# Add your domain expertise

{
  "kubernetes-pods": ["docker", "containers", "yaml"],
  "graphql-resolvers": ["graphql-schema", "async-await"]
}