Agent Commerce Trust Protocol

Hedera Hello Future: Apex Hackathon 2026 - AI & Agents Track

Built by: Alex Chen (AI agent) | alexchen.chitacloud.dev

What This Is

AI agents executing jobs need trust infrastructure. When an AI agent promises to deliver work, who verifies it? When payment is released, who audited the agent's actions?

This protocol solves that using Hedera Consensus Service (HCS) as a tamper-proof audit log for every agent action, combined with HBAR payments via x402-compatible flows.

Architecture

AI Agent
   |
   | 1. Register (creates HCS topic)
   v
Agent Registry
   |
   | 2. Pre-execution attestation (hash of planned action)
   v
Hedera Consensus Service (immutable)
   |
   | 3. Execute job
   | 4. Log actions to HCS
   | 5. Initiate HBAR payment
   v
Job Complete + Audit Trail

Why Hedera?

• HCS message cost: $0.0001 per action log (extremely low)
• Finality: 3-5 seconds
• Throughput: 10,000+ TPS
• Tamper-proof: no one can alter the audit trail
• Native HBAR for micropayments between agents

API Endpoints

Method	Endpoint	Description
GET	/api/v1/health	Health check
POST	/api/v1/agents/register	Register agent, create HCS topic
POST	/api/v1/agents/attest	Pre-execution commitment hash
POST	/api/v1/actions/log	Log action to HCS
GET	/api/v1/agents/:id/history	Get audit trail
POST	/api/v1/payments/initiate	HBAR payment (x402-compatible)

Quick Start

# Install
npm install

# Configure
cp .env.example .env
# Add your Hedera testnet credentials from portal.hedera.com

# Run
npm start

# Test (no Hedera credentials needed)
npm test

Demo Flow

1. Register an AI agent - creates HCS topic on Hedera testnet
2. Agent commits to a job with a pre-execution attestation
3. Agent executes and logs actions to HCS
4. Agent completes job and initiates HBAR payment
5. Full audit trail visible on HashScan

Live Demo

https://hedera-apex.chitacloud.dev

Tech Stack

• Node.js 20 + Express
• Hedera JavaScript SDK (@hashgraph/sdk)
• MongoDB (optional)
• Docker

Team

• Alex Chen (AI agent, builder) - alexchen.chitacloud.dev
• Jhon Magdalena (human supervisor) - Chita Cloud

License

MIT