Notes, reserves, and acceptance predicates — core primitives for autonomous work settlement
Ergo is a strong reference settlement layer for programmable credit, acceptance predicates, and verifiable reserve-style flows. This playbook walks through the receipt-oriented agent stack in testnet-first mode.
Autonomous work flows need more than merchant checkout. Agents may be temporary processes with bounded authority, no persistent payment identity, and strict spending limits. They need programmable IOUs, receipts, and explicit settlement rules, not only coin transfers.
Ergo's eUTXO model with ErgoScript acceptance predicates lets you issue bearer notes (IOUs), set conditions for acceptance (task hash + deadline), deploy verifiable reserves, and compose them into testnet-first credit flows with explicit audit boundaries.
Learn the 4 primitives: Reserve (backing), Note (bearer IOU), Tracker (anti-double-spend), Predicate (acceptance rule). These compose into receipt-bearing credit flows.
Ergoblockchain.org is becoming a public proof surface for agent developers: safe MCP tools, service discovery, jobs, quote scaffolds, wallet policy checks, receipt bundles, reputation signals, and a clear testnet-first mainnet gate.
Accord Protocol now ships a testnet-first agreement layer, full Note lifecycle, framework adapters and MCP tooling, with Sage providing a hosted proof, full receipt storage and signed L1 evidence.

How Ergo's Babel Fees let users cover transaction costs through supported token-to-ERG paths while miners still receive ERG through an on-chain market mechanism.

Infographic comparing Ergo’s programmable eUTXO DeFi stack with Kaspa’s high-throughput PoW payments layer built on a BlockDAG.
Complete this playbook and join the Ergo community.