Stitch SDK Development

This skill encodes the expertise needed to develop @google/stitch-sdk — the core systems, patterns, and philosophies. It does not enumerate every method (the codebase is the source of truth for that). It teaches you how to think about the system.

The Generation Pipeline

The domain layer is fully generated. No handwritten domain classes. The pipeline has 3 stages:

Stage 1: Capture            Stage 2: Domain Design       Stage 3: Generate
┌──────────────────┐       ┌──────────────────┐        ┌──────────────────────────┐
│ capture-tools.ts │──────▶│  domain-map.json │───────▶│ generate-sdk.ts          │
│                  │       │  (the IR)        │        │                          │
│ Connects to MCP  │       │ Classes, bindings│        │ Deterministic            │
│ server, calls    │       │ arg routing,     │        │ codegen into             │
│ tools/list       │       │ cache, extraction│        │ packages/sdk/generated/  │
└──────────────────┘       └──────────────────┘        └──────────────────────────┘