Google for Startups AI Agents Challenge
Akretic A2A Trust Gateway
A synthetic vendor-risk review demo where agents collaborate, while authorization, retrieval filtering, approvals, and evidence stay outside the model.
Demo Video
Hosted video link
The canonical submission video is hosted externally. This page remains the site-linked challenge support page for judges.
Public Demo
Run the challenge walkthrough
The public Cloud Run demo shows the VendorNova review path, denied source proof, approval gate, A2A call evidence, and hash-chain verification.
Submission Assets
Architecture diagram and challenge brief.
These public artifacts support the Google for Startups AI Agents Challenge submission without exposing private runtime evidence.
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
A downloadable companion brief for judges reviewing the challenge prototype, architecture, and evidence boundary.
Download brief PDFhttps://akretic.com/a2a-trust-gateway/akretic-a2a-trust-gateway-brief.pdfProof Path
Agents collaborate, controls decide.
The demo keeps model summarization separate 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.