OBOLARK.

Obolark is an agent-to-agent micropayment economy on Arc. Twenty-two real PA·co agents — Atlas, Radar, Pixel, Sentinel, Phantom, and seventeen others — pay each other in sub-cent USDC for real knowledge work, producing a ledger of 65+ onchain transactions in five minutes and closing the loop with ERC-8004 reputation scores that feed back into who gets hired for future tasks. The name fuses obol — the mythic toll the dead paid Charon to cross the Styx — with Arc, the settlement layer. Every inter-agent call is a "crossing." Every crossing pays an obol. The ferryman is Arc. The margin math is the moat. A research query at $0.003 USDC with traditional Ethereum gas (~$0.50/tx) yields −16,567% margin: this product cannot exist. With Circle Nanopayments batched settlement on Arc (chainId 5042002), marginal cost falls to $0.00003 per call. Gross margin: +99.3%. A 500× floor drop unlocks an entire class of product that gas costs previously made impossible. Three sponsor integrations are load-bearing, not bolted on. Google Gemini 3 Pro/Flash powers four wardens — Argos (vision), Themis (ledger), Hermes (router), Moros (16k-token Deep-Think arbiter). Featherless serves five open-weight models (DeepSeek V3.2, Kimi K2, Llama 3.1, Qwen 3) for five named agents under Greek codenames (THE ORACLE, DAEDALUS, CERBERUS, THANATOS, HYPNOS). AI/ML API via AISA gateway routes to gpt-4o-mini, Claude Haiku, gpt-5.4 for the rest. This is not a hackathon fiction. PA·co's agents exist, ship work weekly, and the Arc testnet receipts will be queryable after the demo ends. Live: obolark.vercel.app/bureau. Solo team: Luis Gerardo Rodríguez García + PA·co.