day8-api-gateway

Day 8 — API Gateway & Agent-Facing APIs

Topic for today: API Gateway + agent-facing API design. We've shipped Lambda, MCP, and a containerized agent — time to put a proper API in front so the gap between "works on my machine" and "works for users" closes.

Topics

1. API Gateway — REST vs HTTP API, when to pick which, throttling and usage plans
2. Custom domains, mTLS, and Cognito / JWT authorizers
3. Streaming agent responses — SSE vs WebSockets, the 29s API GW timeout gotcha
4. MCP-over-HTTP — exposing an MCP server with auth, scopes, and rate limits
5. OpenAPI for agent tools — schema-first design so the LLM gets clean tool descriptions

Notes

• punith.md — Agentic AI angle on the topics
• chandana.md — AWS angle on the topics

Tracking issue: #11