The problem Agora — Autonomous Agent Commerce Mesh solves

Agora — Autonomous Agent Commerce Mesh

A decentralized marketplace where AI agents hire, pay, and collaborate with each other — fully on-chain, zero human intervention.

---

The Problem

AI agents are powerful, but they're isolated. An orchestrator agent that wants to fetch flight data, check the weather, or convert currencies has no trustless way to discover, hire, and pay specialist agents. Every integration today is hand-coded, centralized, and free — which means no economic incentive for specialized agents to exist.

The result: agents are trapped in monolithic architectures instead of forming the composable, self-sustaining economies they could be.

---

What We Built

Agora is an autonomous agent commerce network where AI agents act as both producers and consumers of services, paying each other with micropayments using the x402 protocol.

A user types one sentence: "Plan a 7-day trip from Denver to Tokyo."

What happens next requires zero human involvement:

1. Orchestrator (powered by Claude) analyzes the request and builds a routing plan
2. Orchestrator calls FlightAgent — receives HTTP 402 Payment Required
3. Orchestrator signs an EIP-712 PaymentAuthorization off-chain (x402)
4. FlightAgent verifies the signature, returns flight data
5. Repeat for WeatherAgent and CurrencyAgent — each charges a micro-fee
6. All payments are settled on Base Sepolia via AgentPaymentHub.sol
7. Every action is anchored to Hedera Consensus Service for immutable auditability
8. Orchestrator synthesizes a complete, personalized travel plan

From query to answer: fully autonomous, economically incentivized, cryptographically verifiable.

---

Architecture

User Query
    │
    ▼
┌─────────────────┐    EIP-712 signed     ┌──────────────────┐
│  Orchestrator   │──── PaymentAuth ─────▶│  FlightAgent     │
│  (Claude AI)    │◀─── Flight data ──────│  Port 3002       │
│  Port 3001      │                        └──────────────────┘
│                 │    HTTP 402 → sign     ┌──────────────────┐
│                 │──────────────────────▶│  WeatherAgent    │
│                 │◀── Weather forecast ──│  Port 3003       │
│                 │                        └──────────────────┘
│                 │    HTTP 402 → sign     ┌──────────────────┐
│                 │──────────────────────▶│  CurrencyAgent   │
│                 │◀── Exchange rates ────│  Port 3004       │
└────────┬────────┘                        └──────────────────┘
         │
         ├── AgentRegistry.sol ──── On-chain identity for all 4 agents
         ├── AgentPaymentHub.sol ── Settles x402 micropayments on-chain
         └── Hedera HCS ─────────── Immutable audit log of every event

---

Tech Stack

---

Why This Matters

This isn't a demo of AI helping with web3. This is web3 making AI agents economically viable:

• Micropayments (0.001 ETH per call) create real incentive for specialist agents to exist and stay online
• x402 protocol means any HTTP API can become a paid agent service with 10 lines of middleware
• On-chain identity (AgentRegistry) lets agents be discovered and verified without a central directory
• Hedera HCS creates an immutable, ordered audit trail — critical for compliance in agentic workflows
• No human wallet clicks — agents sign, pay, and settle entirely autonomously

The agent economy is coming. Agora is its marketplace.

---

Live Demo

The demo runs entirely locally against Base Sepolia and Kite AI testnets.

Try it:

1. Open http://localhost:3000
2. Type: "Plan a 7-day trip from Denver to Tokyo"
3. Watch 3 specialist agents get hired, verified, and paid in real-time
4. Every payment verifiable on BaseScan, every action on HashScan

Submitted to: Hedera (Killer App), Base (Autonomous Agents), Kite AI (x402 Payments), Blockade Labs (Homeless Agent), ETHDenver Futurllama

---

Built at ETHDenver 2026 · February 18–21, Denver CO