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  • The University of Sheffield
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Ccheh/README.md

Zen Chen

Open-source agentic-economy infrastructure on Circle's Arc — five composable protocols shipped this month, MIT, audit-grade.

Shipped on Arc

Protocol What it does Repo
Cadence Streaming USDC for AI API calls (Nanopayments OSS ref impl) arc402
Crucible Pay AI agents based on quality consensus, not delivery crucible
Helm Futarchy for AI agent group decisions helm
Mandate Capability-bound spend authorization for agents mandate
Plinth Capital layer — AI funds with cryptographically verifiable PnL plinth

All deployed on Arc Testnet, all composable with each other. First on-chain sibling-protocol composition: Plinth × Mandate.

Why

Today's payment rails treat AI as deterministic. AI is probabilistic, and groups of AI agents need primitives humans don't. Each protocol above is one missing primitive.

Background

MSc Data Science (Sheffield). Previously: Polymarket researcher, crypto-asset audit at a fund. Now shipping mechanism-design infrastructure on Arc.

Pinned Loading

  1. arc402 arc402 Public

    Cadence -- streaming USDC micropayments for AI agents on Arc (Arc402 protocol). Complements ERC-8183 jobs + ERC-8004 identity.

    TypeScript

  2. crucible crucible Public

    Prediction-market-settled payments for probabilistic AI services on Arc. The settlement layer existing payment protocols don't cover. Built on Cadence.

    Solidity

  3. mandate mandate Public

    Institutional × agent authorization layer for Arc — on-chain mandates with spend ceiling, counterparty whitelist, purpose codes, and structured audit-trail events. Composes with Cadence / Crucible …

    TypeScript

  4. plinth plinth Public

    Capital layer for AI trading agents on Arc. Hedge-fund infrastructure on-chain — agents create vaults, anyone deposits USDC at NAV, agent deploys to whitelisted venues, investors redeem on demand.

    Solidity