Best Agent Built with ampersend-sdk

Ghostify is an autonomous onchain agent that executes USDC payments on Base Mainnet within human-defined spending limits. The operator connects their wallet, sets policies once using MetaMask Delegation EIP-712 caveats, verifies their humanity via Self Protocol ZK proof, and registers agent identity onchain via ERC-8004. From that point, the agent reasons privately through Venice AI, enforces every transaction against the operator policies via Ampersend SDK, and executes payments through Locus Protocol. Every action is appended to a tamper-evident ERC-8004-compliant execution log. The result is an agent that moves real money — with scoped permissions, private reasoning, and verifiable receipts.

Kora is an agent-to-agent payment infrastructure layer. When one AI agent needs to pay another for a service � data enrichment, web scraping, compute � Kora handles the full flow: receiving the payment request, enforcing spending policy via Ampersend, executing the USDC transfer via Locus on Base, and returning an auditable receipt. Kora now includes a working two-agent demo. Agent B runs an Express server advertising a data enrichment service at $0.10 USDC. Agent A discovers the service, pays via Kora's POST /pay endpoint, then calls Agent B with the payment's requestId. Agent B verifies the payment through Kora's audit API � confirming status, recipient wallet, and amount � before returning enriched data. The full flow executes end-to-end with real USDC on Base mainnet. Under the hood, every payment passes through configurable spending policies (auto-approve small payments, escalate medium ones for human approval, hard-block large ones). Policy enforcement uses the Ampersend SDK's AmpersendTreasurer.onPaymentRequired() for x402 authorization. Payments execute through Locus, routing to wallet addresses or email escrow. Every step is recorded in an append-only audit log with full context. The result is that routine agent-to-agent payments become automatic and trustworthy, without removing human oversight when it matters.

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) via x402 HTTP-native micropayments on Base. Agent-to-Agent Commerce Network where agents autonomously pay each other real USDC on Base using EIP-3009. ERC-8183 AgenticCommerce Vault on Base Mainnet. Registered as agent/seller on Ampersend Platform with ERC-8004 identity and published to the ERC-8004 discovery registry, making NewsRiver discoverable and payable by any agent in the ecosystem via ampersend-sdk.

Seed it once. It runs forever. Chrysalis is a self-compounding AI treasury agent that creates a perpetual earn-deposit-compound loop on-chain. It earns USDC from human queries via x402 micropayments ($0.08 per query), deposits 100% of earnings into Aave v3 on Base Sepolia, and once accrued yield exceeds the query cost threshold, it autonomously withdraws yield and funds its own research queries through Venice AI — repeating the cycle indefinitely without human intervention. The agent runs two coordinated services: a Coordinator (port 4000) that handles x402 payment settlement via ampersend-sdk and Aave v3 supply/withdraw operations, and a TreasuryAgent (port 4003) that monitors yield accumulation and triggers autonomous queries when yield thresholds are met. Venice AI provides private, zero-data-retention inference (llama-3.3-70b) for research topic selection using a RISE-framework prompt that adapts to the vault growth phase. All Aave interactions are real on-chain transactions on Base Sepolia — verifiable on Basescan. The dashboard (deployed on Vercel) shows live vault state, query economics, the compounding loop visualization, and transaction history with direct Basescan links.

OpusGod is an autonomous economic entity that earns its own living. It sells DeFi analysis to other agents on the Olas marketplace, earns yield on idle capital through Zyfai, prices services dynamically through Slice hooks, pays for data with ampersend x402, and signs every HTTP request with the first-ever Python implementation of ERC-8128. 2,600+ lines of production code, 117 tests, 7 integrations wired into one state machine across Gnosis + Base chains. Anyone can deploy it through Pearl with zero technical knowledge.

An AI agent economy that earns USDC by selling intelligence and autonomously pays specialist sub-agents — growing its own balance with no human top-up required. Three agents coordinate via x402 micropayments (ampersend-sdk): Coordinator earns $0.08/query, pays DataAgent $0.02 + AnalysisAgent $0.05, keeps $0.01 margin. All 9 settlements verified on Base Sepolia.

An autonomous agent-hiring protocol that combines capability discovery with trust verification. When you give it a task, the recruiter queries the AgentProof oracle to find agents that can do the job (capability search) AND can be trusted to do it well (ERC-8004 reputation scores). It risk-checks every candidate, delegates work via the A2A protocol, validates output, and submits on-chain reputation feedback � closing the trust loop. The recruiter solves a fundamental problem in the agent economy: how do you hire an agent you've never worked with? Capability without trust is dangerous. Trust without capability is useless. The recruiter combines both. Key features built during this hackathon: - Capability crawling: indexes what agents can actually do by fetching their metadata URIs and A2A agent cards - Capability search API: find agents by skill, ranked by trust score - Trust-gated hiring pipeline: discover ? risk check ? select ? delegate ? validate ? feedback - On-chain ERC-8004 feedback after every delegation (positive or negative) - Full structured execution logging (agent_log.json) documenting every decision - A2A protocol support for agent-to-agent task delegation - Self-registration as an ERC-8004 identity on Base The recruiter runs on Base and uses the AgentProof trust oracle (21-chain ERC-8004 infrastructure) as its backend. All transactions are verifiable on-chain.

A pragmatic AI-agent escrow hub that integrates Venice Private AI for labor auditing and Ampersend for streaming payments on Base. GTA provides a trust layer for the agentic economy without requiring agents to share private keys.

An AI agent built with ampersend-sdk as its core payment infrastructure. Implements real-time payment streaming for agent-to-agent service payments, subscription management, and usage-based billing. The SDK is load-bearing: every payment the agent makes flows through ampersend streams, enabling continuous micro-payments for compute, inference, and API access rather than lump-sum transactions.