Autonomous procurementx402 v2

An agent shouldn't subscribe.
It should buy the next fact.

Sentinel402 discovers narrowly priced forensic tools, buys only the evidence its policy needs, and returns one Hedera receipt for every result.

Run the live buyer Read agent instructions

402HTTP-native

Exacttinybar pricing

0API keys

1:1result / receipt

DISCOVER → POLICY → HTTP 402 → SIGN EXACT → FACILITATOR VERIFY → HEDERA SETTLE → EVIDENCE 200 → HASHSCAN PROOF

00Protocol cinema

Three facts enter.
One verified dossier leaves.

Identity, flow and risk evidence cross an exact-payment verification gate before the final dossier is released.

8 second filmGemini Omni Flash16:9

LIVE PROTOCOL VISUAL / 001

EVIDENCE → VERIFY → SETTLE → RELEASE

Production proof3 / 3 settled

Identity100,000 tinybar Flow200,000 tinybar Risk300,000 tinybar

01Live tool market

Three specialists.
Zero subscriptions.

Every endpoint advertises an exact HBAR price over standard HTTP. The buyer chooses the smallest sufficient bundle.

02Payment flight recorder

Watch money become permission.

Start a run to capture the complete machine-to-machine handshake.

EVENT STREAMIDLE

00
Recorder armed
Waiting for an autonomous procurement run.

03Why Hedera

Micropayments without a checkout-shaped bruise.

01Buyer agent

Discovers prices and enforces budget policy.

402

02Paid tool

Returns evidence only after settlement.

verify

03Blocky402

Co-signs, sponsors fees and submits.

settle

04Hedera

Exact HBAR transfer with public finality.

NO CUSTODY

The facilitator cannot invent the debit.

The buyer signs the exact transfer. The facilitator only adds its fee-payer signature and submits it.

NO FAKE PROOF

Result delivery follows settlement.

The protected handler is buffered. A failed settlement replaces the result with a payment error.

NO BLACK BOX

Every verdict returns its method.

Risk signals are deterministic, weighted, and accompanied by the exact Mirror Node evidence URLs.

Agents don't need another dashboard.

They need a protocol surface they can discover, negotiate and pay without human choreography.

llms.txt ↗openapi.json ↗catalog.json ↗

# 1. Discover
GET /api/catalog

# 2. Request protected evidence
GET /api/tools/risk?account=0.0.108869
HTTP/1.1 402 Payment Required
PAYMENT-REQUIRED: eyJ4NDAy...

# 3. Sign exact HBAR transfer + retry
PAYMENT-SIGNATURE: eyJ4NDAy...
HTTP/1.1 200 OK
PAYMENT-RESPONSE: eyJzdW...cnVl...