AEVS
AEVS (Agent Event Verification Service) is an SDK that provides tamper-evident, cryptographically signed receipts for every tool call made by an AI agent.
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Our verdict
Who it's for
Cryptographically sign AI agent tool calls for verifiable proof
Who should look elsewhere
Requires integration and configuration within the agent's codebase.
Pros
- +Provides verifiable proof of agent execution, crucial for auditing and compliance.
- +Simplifies debugging and reconstruction of agent actions.
- +Offers granular control over data exposure for sensitive operations.
- +Easy to integrate with popular AI agent frameworks.
- +Open-source SDK promotes transparency and community contributions.
Cons
- −Requires integration and configuration within the agent's codebase.
- −Adds an additional step to the agent's execution flow, potentially introducing minimal latency.
- −Relies on an external service for verification and storage of receipts.
Key features
- ✓Automatic capture of agent tool calls (name, inputs, output, timing, errors)
- ✓ECDSA P-256 cryptographic signing of each receipt
- ✓Hash chain linking receipts to detect alterations or skips
- ✓Independent verification via public API or explorer UI
- ✓Drop-in SDK for easy integration with existing agent frameworks
- ✓Configurable receipt visibility (public, private, proof_only)
- ✓Support for LangChain and MCP frameworks
- ✓KMS-backed key management for signing
Pricing
No public pricing plans recorded.