AI agents shouldn’t sign
without a gatekeeper.
VANTA sits between your AI agent and the blockchain. Every proposed transaction is scored, tiered, and — where it matters — handed to you for explicit confirmation before it touches the network.
The problem
An agent with signing access is one prompt injection away from draining your wallet.
Prompt injection
Adversarial content in conversation context steers the model into signing harmful transactions.
Social engineering
Urgency, impersonation, and pressure tactics push automated flows toward unsafe approvals.
Model error
Ambiguous intent or wrong parameters produce valid-looking transactions that don't match what you meant.
How it works
Every transaction passes through a gauntlet before it reaches the chain.
VANTA runs outside the conversational model. Arbitrary prompt text cannot expand privileges or disable enforcement.
Risk gates
Friction proportional to impact.
Low-risk operations proceed without interruption. Consequential ones require your explicit consent. Dangerous ones never reach the network.
Tier 1
Auto approve
Small amounts, known addresses, read-only calls. Zero friction.
Tier 2
Human gate
New recipients, token approvals, amounts above threshold. You decide.
Tier 3
Hard block
Known drainers, unlimited approvals, attempts to disable guardrails.
AI scanner
Every transaction scored before you see the confirmation screen.
Gemini-powered analysis evaluates calldata structure, counterparty context, and anomaly signals. The score sets the tier floor — it can escalate, never downgrade.
Sample assessment
Token approval · USDC
via DeFi manager agent
Confirmation
Your key. Your approval.
High-risk transactions require explicit human confirmation through a method you choose.
Automated preparation.
Governed execution.
Your agents move fast. VANTA makes sure they only move in the right direction.