Google for Startups AI Agents Challenge
Akretic A2A Trust Gateway
A challenge prototype exploring synthetic vendor-risk review, with authorization, retrieval filtering, approvals, and evidence outside the model.
This page preserves the project architecture and challenge brief. Interactive demo and video access are no longer offered here.
Project Resources
Architecture diagram and challenge brief.
These artifacts document the Google for Startups AI Agents Challenge submission and its proposed architecture.
Architecture Diagram
A2A Trust Gateway control flow
The diagram shows the demo UI, ADK root orchestrator, specialized A2A agents, synthetic corpus, Google Cloud services, and evidence ledger boundaries.

Brief PDF
Akretic A2A Trust Gateway brief
The submitted challenge brief describing the prototype, architecture, and evidence boundary.
Download brief PDFhttps://akretic.com/a2a-trust-gateway/akretic-a2a-trust-gateway-brief.pdfPrototype Design
Agents collaborate, controls decide.
The prototype design separates model summarization from authorization, retrieval release, approvals, and verification.
Gemini summarizes only permitted context.
Gate0-lite decides policy outside the model.
RAG DMZ-lite blocks denied text before model context.
approval_required gates sensitive side effects.
The evidence ledger verifies the run.
A2A collaboration is shown through Agent Card skill-call wiring.
Public Boundary
This is a challenge prototype using synthetic data. It is not a production readiness claim, legal or compliance attestation, security guarantee, or Google Cloud Marketplace listing.