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The SDK is split into entry points so you only import what you need. The core flow engine ships zero runtime dependencies; the rest is opt-in. See the Platform overview for what “Requires API key” means in practice.

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Bundle sizes

  • @waniwani/sdk/mcp core path: under 5 KB gzipped
  • @waniwani/sdk/chat (full widget bundle): ~650 KB (React included; tree-shakeable when you import individual layouts)
  • @waniwani/sdk client + tracking: ~10 KB gzipped

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Peer dependencies

  • @modelcontextprotocol/sdk (required for server entry points)
  • zod (required for flow state schemas)
  • react (only required when using @waniwani/sdk/chat or @waniwani/sdk/mcp/react)