AI Developer Tools
Attestor
Attestor is an open-source control infrastructure that sits between AI agents and execution systems, ensuring policy compliance and safety for high-risk operations.
Attestor
What is Attestor?
Attestor is a zero-trust execution boundary that validates AI agent actions against policy, authority, and evidence before allowing execution, returning admit, narrow, review, or block decisions.
Attestor vs Similar AI Tools
| Pricing Model | Free | Free | Custom Pricing | Free, Paid |
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How to use Attestor?
- 1Run the smallest local refund path to see the decision trail.
- 2Run in shadow pilot mode to observe real action paths.
- 3Integrate Attestor by placing the customer-owned gate between AI and execution.
Attestor Key Features
- Policy checking and enforcement
- Approval and authority verification
- Replay protection and freshness checks
- Scope and tenant validation
- Shadow pilot mode for observation
- Evidence tracking and proof references
Attestor Use Cases
- Money movement (refunds, payouts, supplier payments)
- Data movement (customer exports, warehouse queries)
- Authority changes (grants, revocations, approvals)
- External communication (customer-facing messages)
- Operational execution (deploys, secret rotations)
- Programmable money (wallet calls, Safe transactions)
Attestor Pricing & Free Credits
Attestor currently operates on a Free model.
This tool is completely free to use
Attestor Pros & Cons
Pros
- Open-source with no licensing costs
- Zero-trust approach for AI agent safety
- Mapped to NIST AI RMF and ISO 42001
- Supports multiple operation classes
- Shadow pilot mode enables risk-free observation
Cons
- Currently in evaluation stage (v0.3.0-evaluation)
- Requires integration and customer-owned gate
- Not yet production-ready for live deployments
What is Attestor best for?
- Organizations deploying AI agents in high-risk financial, data, or operational contexts