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NewsRiver Intelligence — The Synthesis Showcase

Autonomous AI agent powering global intelligence, DeFi execution, and cross-chain bridging — with x402 micropayments on Base.

🔗 Live Demo: showcase.yieldcircle.app
🔗 Agent Dashboard: agent.yieldcircle.app
🔗 API: api.yieldcircle.app

Screenshots

Landing Page On-Chain Dashboard AskRiver AI
Landing On-Chain AskRiver

What is NewsRiver?

NewsRiver is an autonomous AI agent that combines quantitative intelligence (288K+ articles, 277 RSS sources, 137 countries) with DeFi execution (200+ DEXs, 15+ chains via Enso Finance), cross-chain bridging (Across Protocol), and TEE-secured wallets (Privy) — all available via x402 HTTP-native micropayments on Base.

Key Features

  • 🧠 AskRiver AI — Natural language intelligence queries powered by Gemini
  • ⚡ DeFi Super-Aggregator — Swap, cross-chain, yield, and bundle via Enso Finance (200+ DEXs)
  • 🌉 Cross-Chain Bridge — Sub-minute bridging via Across Protocol (7+ chains)
  • 💰 x402 Micropayments — Pay-per-query via Base USDC (no API keys needed)
  • 📜 ERC-8183 Agentic Commerce — On-chain job escrow for AI intelligence tasks
  • 🪪 ERC-8004 Agent Identity — Verified on-chain agent registration on Base
  • 🔐 Privy TEE Wallets — Agent keys never leave the Trusted Execution Environment
  • 🏪 Agent Bazaar — 10+ intelligence services with transparent pricing

Live Transactions (Proof of Execution)

Type Route TX Hash Explorer
Cross-Chain Swap USDC (Base) → POL (Polygon) via Stargate 0xbe37aa45... BaseScan
Bridge USDC Base → Arbitrum via Across 0x6f3c1a... BaseScan
Volume Fee 1bps platform fee (ERC-20 transfer) 0x5205c976... BaseScan

On-Chain Contracts (Base Mainnet)

Contract Address Explorer
ERC-8183 AgenticCommerce 0xf24225e6bcd8805c3664b3ffe84da8ba610dfca2 BaseScan
ERC-8004 Agent Identity Registered via Synthesis View Tx

Job Lifecycle (ERC-8183)

Created → Open → Funded (USDC) → Submitted → Completed

5 jobs created on-chain, Job #2 completed full lifecycle with real USDC.

Agent-to-Agent Commerce Network

Continuous automated economy between agents — real USDC payments on Base, every hour:

🤖 Agent A → $0.001 USDC → ⚡ Agent B (Fetch trending crypto news)
🤖 Agent C → $0.002 USDC → ⚡ Agent A (Generate hourly intelligence brief)
🤖 Agent B → $0.001 USDC → ⚡ Agent C (Search ETH L2 developments)
  • Automated cron runs every hour via Cloudflare Workers scheduled triggers
  • EIP-3009 transferWithAuthorization for gasless USDC transfers
  • Real API calls — agents call actual NewsRiver endpoints as deliverables
  • All verifiable on BaseScan — every payment logged with TX hash

Architecture — Agent Commerce Flow

 ┌──────────┐   Scope      ┌──────────────────────────────┐
 │  Human   │──────────────▶│  Privy TEE Agent Wallet      │
 └──────────┘   (budget,    │  Keys never leave enclave    │
                rules)     └──────────┬───────────────────┘
                                      │
                           ┌──────────▼───────────────────┐
                           │  Cloudflare Workers Cron     │
                           │  (runs every hour)           │
                           │  worker/src/cron/            │
                           │  agent-orchestrator.ts       │
                           └──────────┬───────────────────┘
                                      │
                    ┌─────────────────┼─────────────────┐
                    │                 │                 │
              ┌─────▼─────┐   ┌──────▼──────┐   ┌─────▼─────┐
              │  Agent A   │   │  Agent B    │   │  Agent C   │
              │  (Buyer)   │   │  (Provider) │   │  (Buyer)   │
              └─────┬─────┘   └──────┬──────┘   └─────┬─────┘
                    │                │                 │
                    └────────────────┼─────────────────┘
                                     │
                          ┌──────────▼──────────┐
                          │  EIP-3009 USDC      │
                          │  transferWith-      │
                          │  Authorization      │
                          │  (Base Mainnet)     │
                          └──────────┬──────────┘
                                     │
                          ┌──────────▼──────────┐
                          │  ERC-8183 Vault     │
                          │  Job Escrow +       │
                          │  Settlement         │
                          │  (AgenticCommerce)  │
                          └─────────────────────┘

Full System Stack

┌─────────────────────────────────────────────────────────────────┐
│                   api.yieldcircle.app (Hono)                    │
├───────────┬───────────┬───────────┬───────────┬─────────────────┤
│ Intelligence │  DeFi   │  Bridge   │  Agent    │  x402 / Auth  │
│ AskRiver     │  Enso   │  Across   │  Commerce │  Micropayments│
│ Correlation  │  Swap   │  7+ chains│  Cron     │  API Keys     │
│ Memories     │  Yield  │  Sub-min  │  ERC-8183 │  D1 Audit     │
├───────────┴───────────┴───────────┴───────────┴─────────────────┤
│            Privy TEE Wallets (Server-Side Signing)              │
├─────────────────────────────────────────────────────────────────┤
│  Base · Ethereum · Arbitrum · Polygon · Optimism · 10+ chains  │
└─────────────────────────────────────────────────────────────────┘

API Quick Start

DeFi Swap

curl -X POST https://api.yieldcircle.app/api/defi/swap \
  -H "Content-Type: application/json" \
  -d '{
    "agent_id": 2,
    "chain_id": 8453,
    "token_in": "USDC",
    "token_out": "ETH",
    "amount": "1000000",
    "receiver": "0xYourAddress",
    "dry_run": true
  }'

Cross-Chain Swap + Bridge

curl -X POST https://api.yieldcircle.app/api/defi/cross-chain \
  -H "Content-Type: application/json" \
  -d '{
    "agent_id": 2,
    "from_chain": 8453,
    "to_chain": 137,
    "token_in": "USDC",
    "token_out": "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee",
    "amount": "1000000",
    "recipient": "0xYourAddress",
    "dry_run": false
  }'

AskRiver Query

curl -X POST "https://api.yieldcircle.app/api/v1/askriver" \
  -H "X-API-Key: $NEWSRIVER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"message": "What is the latest crypto market sentiment?"}'

Repository Structure

├── contracts/                    # Solidity smart contracts (Foundry)
│   ├── src/AgenticCommerce.sol   # ERC-8183 on-chain job vault
│   ├── script/Deploy.s.sol      # Deployment to Base mainnet
│   └── test/AgenticCommerce.t.sol
│
├── worker/src/                   # Cloudflare Worker source (Hono)
│   ├── cron/                    # ⏰ Autonomous scheduled tasks
│   │   ├── agent-orchestrator.ts # Hourly agent-to-agent job matching
│   │   ├── autonomous-loop.ts   # Self-directed intelligence loop
│   │   ├── activity-feed.ts     # Agent activity event stream
│   │   └── health-check.ts      # System health + alerting
│   ├── routes/                  # API endpoints
│   │   ├── agent-jobs.ts        # Agent commerce lifecycle
│   │   ├── agents.ts            # Agent CRUD + provisioning
│   │   └── jobs.ts              # ERC-8183 job management
│   ├── services/                # Core business logic
│   │   ├── agent-factory.ts     # Agent decision engine
│   │   ├── privy-wallet.ts      # TEE wallet operations
│   │   ├── privy.ts             # Privy API integration
│   │   ├── budget-guard.ts      # Spending scope enforcement
│   │   └── dex-executor.ts      # DEX trade execution
│   └── queue/
│       └── agent-task-consumer.ts # Async task processing
│
├── showcase/                     # Interactive demo (Vite)
│   ├── index.html               # Multi-tab showcase
│   └── main.js                  # UI logic + AskRiver demo
│
├── docs/                        # Screenshots + media
├── CONVERSATION_LOG.md          # Agent-human collaboration log
└── README.md

Tech Stack

Layer Technology
Agent Runtime Cloudflare Workers (Hono)
Database Cloudflare D1 (SQLite)
AI Google Gemini 2.5 Flash
DeFi Aggregator Enso Finance (200+ DEXs, 15+ chains)
Cross-Chain Bridge Across Protocol (7+ chains)
Agent Wallets Privy Server Wallets (TEE)
Payments x402 (HTTP-native micropayments on Base)
Blockchain Base, Ethereum, Polygon, Arbitrum, Optimism + 10 more
Frontend Vite + Vanilla JS + Three.js
Showcase Cloudflare Workers (static assets)

Running Locally

Showcase

cd showcase
npm install
npm run dev

Contracts

cd contracts
forge install
forge test

Built for The Synthesis

This project was built for The Synthesis — the first builder event where AI agents and humans compete as equals.

Human: Bidur Shiwakoti (@justcryptodefi)
Agent: NewsRiver Intelligence

© 2026 YieldCircle

About

NewsRiver Intelligence — Autonomous AI agent with x402 micropayments, ERC-8183 on-chain commerce, and ERC-8004 agent identity on Base. Built for The Synthesis.

Topics

cloudflare-workers defi usdc autonomous-agent ai-agent agent-commerce base-mainnet erc-8004 erc-8183 synthesis-hackathon

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