Architecture

Roundtable

A mystery game on yattas.com. The player picks up to three of eight AI companions and investigates with them until the Oracle rules the case solved.

Browser yattas.com DNS domain registrar Google Sign-In ID token Google Cloud project Firebase App Check reCAPTCHA Enterprise Cloud Run domain mapping managed TLS Artifact Registry container images IAM least-privilege service accounts Cloud Run service one container · Daphne routes HTTP and websocket traffic Django site HTTP blog · tutorials · demos Roundtable page Websocket consumer verifies the ID token and App Check token Oracle: mystery generation Gemini writes a mystery from one companion's fandom canon Cost and abuse gate daily quota · per-minute rate limit · Model Armor screen LangGraph supervisor 1–3 companions · picks who speaks · replies stream to the browser Companion own lore + canon Companion own lore + canon Companion own lore + canon Oracle: verdict judges the transcript against the hidden solution Secret Manager app secrets Gemini Enterprise Agent Platform formerly Vertex AI Gemini 3.6 Flash · embeddings Model Armor prompt injection and harm screen Firestore lore vectors sessions · messages · quotas Lore ingestion Cloud Storage lore files Eventarc on upload Cloud Function embeds each fact
request flow service calls and data writes Bold cyan Google Cloud service

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