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.

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 ModelFreeFreeFreeFree
Free Credits
Key Features
  • Policy checking and enforcement
  • Approval and authority verification
  • Replay protection and freshness checks
  • Seven breakable boxes covering OWASP Agentic Top-10 vulnerabilities
  • Three guided simulations for cascading failures, human-agent trust, and rogue agents
  • Network-isolated Docker containers for safe execution
  • Code-to-runtime reasoning across cloud, Git, and Kubernetes
  • Action-gate enforces read-only policy on every API call
  • Sandboxed JavaScript execution for concurrent research
  • Append-only, SHA-256-addressed event history through Jaybase
  • AES-256-GCM encryption for stored node payloads
  • Unified RBAC for ledger, notes, snapshots, and audit reads
Pros
  • Open-source with no licensing costs
  • Zero-trust approach for AI agent safety
  • Covers full OWASP Agentic Top-10 in a realistic manner
  • Docker isolation prevents accidental damage
  • Read-only by construction prevents accidental writes
  • Evidence-backed verification cross-checks every finding
  • Opinionated and secure accounting CLI with immutable audit trail
  • Designed for AI agent integration with JSON output
Cons
  • Currently in evaluation stage (v0.3.0-evaluation)
  • Requires integration and customer-owned gate
  • Requires Docker and technical setup
  • Not for production use; only for lab environments
  • Requires an LLM API key, incurring token costs
  • Limited to read-only operations, cannot remediate
  • Pre-1.0, limited feature set
  • No native QuickBooks import (agents must normalize data)
Best For
  • Organizations deploying AI agents in high-risk financial, data, or operational contexts
  • Security researchers focusing on AI agent vulnerabilities
  • Developers building MCP-based applications
  • Security engineers
  • DevOps teams
  • Small teams needing secure, auditable accounting with AI agent support
  • Developers integrating automated bookkeeping workflows

How to use Attestor?

  1. 1Run the smallest local refund path to see the decision trail.
  2. 2Run in shadow pilot mode to observe real action paths.
  3. 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

Open Source

Free

Free to use under open-source license.

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

Attestor FAQ

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