CAIN-42 CAIN StudioHow CAIN-42 compares · Platform agent governance
CAIN-42 vs Google ADK + Vertex / Gemini Agent Engine
ADK is an open-source, model-agnostic agent framework; the Agent Engine adds a managed runtime, Memory Bank, sessions and enhanced tool governance. Identity is GCP IAM; governance is the cloud control plane plus developer-defined policy.
What Google ADK + Vertex / Gemini Agent Engine does well
- Open-source framework with broad model and Google Cloud reach.
- Managed runtime, Memory Bank (LTM) and sessions.
- Deep integration with GCP IAM and observability.
What CAIN-42 does differently
- Enforces at the tool-call boundary, before anything runs.
- Orders authorization through a Byzantine quorum (3-of-4): one "yes" is never enough.
- Leaves a per-action signed receipt you can verify offline with a clean-room verifier.
- Authority continuity: a change to the model, tool, memory, skill or delegation forces a re-check.
- Self-serve from $19.75/mo; runs hosted, self-hosted or air-gapped.
Capability difference
| Capability | CAIN-42 | Google ADK + Vertex / Gemini Agent Engine | Source (verified 2026-10-14) |
|---|---|---|---|
| Primary focus | Runtime governance in the execution path | Agent framework + managed runtime and memory | Google source page verified 2026-10-14 |
| Blocks the tool call at the boundary | Yes — MCPGate halts before the tool runs | Yes (Agent Engine runtime + tool governance) | |
| Byzantine-ordered authorization (quorum cert) | Yes — 3-of-4 PBFT quorum certificate | No* | |
| Per-action signed receipt, offline-verifiable | Yes — Ed25519, hash-chained, offline-verifiable | Cloud audit logs / traces | |
| Authority continuity across change | Yes — a change forces an authority re-check | No* | |
| Vendor-neutral / self-hostable | Hosted, self-hosted or air-gapped | GCP-managed (ADK itself is open source) | |
| Public entry price | $19.75/mo self-serve | Usage-based (talk to sales) |
When to pick which
Pick ADK + Agent Engine for a Google-native agent stack. Pick CAIN-42 when you need the enforcement boundary and the proof to be cloud-agnostic and independently verifiable.
Based on each vendor's public homepage and product pages, last reviewed 2026-10-14. No affiliation and no claim about their internals. "No*" means we found no public documentation of that capability, not that the vendor cannot do it.