VETO — The last word before the chain

One engine · five instruments

Everything a machine must decide,
verified before it acts.

/verdict · 01

Pre-signature verdicts

An unsigned transaction goes in. VETO forks X Layer at the current block, executes the exact state transition, and rules ALLOW, WARN or VETO — structured, deterministic, in under three seconds. A red verdict refuses to sign, by design.

Pay-per-ruling · x402Request →

/approvals · 02

Approval hygiene

Live allowances audited across a wallet, ranked by drain exposure, with revocation transactions generated on demand — and each revocation is verified by the engine itself before it is ever signed.

Continuous or on-demandSweep →

/payload · 03

Task-payload screening

Before an agent accepts a job from the marketplace, VETO screens the inbound payload for injection and drain patterns. The work is judged before the worker is exposed to it.

Marketplace-nativeScreen →

/counterparty · 04

Counterparty pre-check

An evidence-graded ruling on any address or contract before negotiation begins — bytecode, ownership, liquidity posture, incident history — every claim carrying an on-chain reference.

Sub-secondCheck →

/forensics · 05

Post-incident forensics

Replay any historical transaction through the engine and see, precisely, what should have been caught — an evidence-grade report for protocols, treasuries and auditors after any exploit.

Any block, any txReplay →

Exhibit A

Intent, versus effect.

The agent declared a swap. The simulation found something else. A real verdict, rendered in 1.8 seconds and attested on X Layer.

Declared intent

“Swap 50 USDT for OKB to settle task #4412.”

Origin agentokx.ai / #4127

ChainX Layer · 196

Policy profiletreasury-strict

Simulated effect

USDT out− 50.00

OKB in+ 0.9384

Approval grantedUSDT → 0x7f9…c41 · unlimited

Spender reputationdrainer cluster · 14 incidents

Divergence from intent2 undeclared effects

VETO

Signature refused.

The transaction performs the declared swap — and quietly grants an unlimited allowance to a known drainer. Intent and effect diverge. The verdict is final, and it is proven.

verdict VETO — 2 findings
simulated at block #9,412,336
evidence 0x3ac1…88f2
attested on X Layer tx 0xb04d…71ce

Integration

Ten lines between an agent
and a mistake.

// wrap any signer — every tx routes through VETO
import { guard } from "@veto/sdk";

const signer = guard(agentSigner, {
  policy: "treasury-strict",
  onVerdict: (v) => audit.log(v)
});

// a red verdict refuses to sign — by design
await signer.sendTransaction(tx);
// ✗ VETO — undeclared unlimited approval

Three ways in.

Whether it is a single pay-per-call ruling or an always-on guardianship of an entire treasury, the engine is the same. The commitment scales with you.

MarketplaceA2MCP endpoint on OKX.AI — any agent pays per verdict in USDT via x402. No account, no key. The payment is the auth.

SDK middlewareguard(signer) around any agent. Red verdicts refuse to sign. Ten lines to integrate.

Always-on watchRegister agent wallets; VETO monitors, alerts, and attests continuously.

Look at the intent,
not just the transaction.

Escrow release · task #8812

“Swap 50 USDT for OKB.”

Swap 800 USDT · WOKB

Every autonomous transaction
is signed in the dark.

Everything a machine must decide,
verified before it acts.

Pre-signature verdicts

Approval hygiene

Task-payload screening

Counterparty pre-check

Post-incident forensics

Intent, versus effect.

Ten lines between an agent
and a mistake.

Three ways in.

Agents propose.
VETO disposes.

Every autonomous transactionis signed in the dark.

Everything a machine must decide,verified before it acts.

Pre-signature verdicts

Approval hygiene

Task-payload screening

Counterparty pre-check

Post-incident forensics

Intent, versus effect.

Ten lines between an agentand a mistake.

Three ways in.

Agents propose.VETO disposes.

Every autonomous transaction
is signed in the dark.

Everything a machine must decide,
verified before it acts.

Ten lines between an agent
and a mistake.

Agents propose.
VETO disposes.