Governance Infrastructure

Govern the execution.
Not just the answers.

Walko Systems builds deterministic governance infrastructure for AI agents. Cryptographic verification. Fail-closed enforcement. Audit-ready receipts.

Try the Demo View Sift Lite Docs

sift governance decision

{
  "verdict": "ALLOW",
  "risk_score": 0.12,
  "signature": "ed25519:a3f8..."
}

143

req/sec sustained

fail-open events

100%

adversarial blocks

<3ms

p99 latency

Products

The Walko Systems ecosystem.

Flagship

Sift

Agent Governance Platform

Deterministic governance layer between AI agents and execution. Cryptographic ed25519 signatures, ACL enforcement, audit receipts.

Risk-tier gating
Replay protection
Fail-closed architecture

Enterprise · Book a DemoLearn More →

Free Tier

Sift Lite

One-Call Agent Governance

Risk evaluation API. One POST request, no SDK needed. Get a 0.0–1.0 risk score and allow/deny for any agent action.

100 calls/day free
No API key required
9 risk flag categories

Free · No SetupTry It Free →

Marketplace

AstraMart

AI Agent Marketplace

Production-ready AI agents with built-in Sift governance. Human-in-the-loop for the 1% that matters.

5 agents live
Sift-governed execution
Human approval flows

Browse · DeployBrowse Agents →

Interactive

Sift Playground

Live Governance Demo

See Sift make real-time governance decisions. Test actions, see risk scores, watch allow/deny verdicts live.

Real-time evaluation
Visual risk scoring
No setup required

Live · InteractiveOpen Playground →

Live in the wildcassandra.walkosystems.com

Cassandra — the AI startup obituarist.

An autonomous agent governed by Sift. She researches dead AI startups, writes honest obituaries, and secures their abandoned domains before phishers do. Every output passes a human approval gate — the gate is the product.

Visit the Cemetery →

How It Works

Three layers of governance.

Authenticate

Every agent request is signed with ed25519 cryptographic keys. No valid signature, no execution.

Evaluate

Each action is scored against risk tiers, ACL policies, and contextual rules. Deterministic. No LLM in the loop.

Enforce

Allow or deny. Every decision produces a signed receipt. Fail-closed by default — if Sift is unsure, the action does not execute.

Integration

One API call. Govern any agent.

Sift Lite evaluates any action in a single POST request.

sift-lite-example.sh

# Evaluate an agent action
curl -X POST https://demo.walkosystems.com/lite/api/evaluate \
  -H "Content-Type: application/json" \
  -d '{"action":"send_email","target":"user@corp.com"}'

# Response
{
  "risk_score": 0.34,
  "recommendation": "ALLOW",
  "flags": ["external_communication"]
}

“Sift does not make agents smarter.
It makes them governable.”

Ed25519 Signed

Fail-Closed Default

Audit-Ready Receipts

Pricing

Enterprise-grade governance.

Three tiers. Annual contract. No pay-as-you-go.

Starter

$2,000/ mo

For teams getting started with agent governance

Up to 5 governed agents
Basic ACL policies
Cryptographic receipts
Dashboard access
Email support

Govern the execution.Not just the answers.