3Stone Ledger

Require approval before an AI agent performs a risky action.

Record proposed actions, apply configurable risk thresholds, approve or reject held actions, and retain an independent outcome record. Lower-risk actions can proceed automatically; actions at or above your threshold wait for a decision from a person or your own approval tooling.

New to APIs? See where Ledger fits and copy the setup prompt →

1,000 logged actions/mo includedWorks with your own approval tooling$29/mo flat, cancel anytime
Agent actionDecision before execution
Live
Risk
High
State
Pending approval
Record
Forward-only
How It Works

Three lines before the risky part

// Before a risky action, propose it
const res = await fetch("https://shield-api.3stoneai.com/api/v1/ledger/actions", {
  method: "POST",
  headers: { Authorization: "Bearer sk_ledger_...", "Content-Type": "application/json" },
  body: JSON.stringify({
    agentId: "deploy-bot",
    description: "Delete unused S3 buckets older than 90 days",
    riskLevel: "high",
  }),
});
const { action } = await res.json();

// action.status is "pending_approval" - wait for a real decision
// before actually doing it
What's Included

A real gate, not a suggestion

Real approval gates

Below your risk threshold, an action auto-approves and the agent proceeds. At or above it, the agent waits for a real decision - yours, or your own tooling's.

An audit trail an agent can't fake

Every proposal, decision, and execution is a real, timestamped, forward-only record - an agent's own self-report was never going to be trustworthy evidence.

Works with whatever you already have

Decide via a simple API call - a Slack bot, an on-call tool, or a person on a laptop. No new dashboard to learn on day one.

Never overwritten

A decided action stays decided. The API itself enforces it - not a convention, a real constraint.

Pricing

Metered, not per-seat.

$29/month

  • 1,000 logged actions/month included
  • Real approval-gate + audit-trail API
  • Works with your own decision tooling
  • No contract - cancel anytime
Honest About Scope

What this is - and isn't

Ledger logs and gates actions your own code proposes to it - it doesn't inspect your agent's reasoning or intercept calls it isn't told about. There's no dashboard UI yet; decisions happen via the API itself, deliberately, until real usage shows what a dashboard actually needs to show.