Nexus-Arc – pay-per-call and job escrow for AI agents on Arc

Show HN: Nexus-Arc – pay-per-call and job escrow for AI agents on Arc

Nexus-Arc – pay-per-call and job escrow for AI agents on Arc operates in show hn launch.

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Hi HN — I built Nexus-Arc.AI agents can call APIs and run multi-step work, but they still cannot open a Stripe account or hold a corporate card. Prepaid credits lock capital; L1 fees make $0.001 calls uneconomic; L2 batch latency breaks tight loops.Nexus-Arc is a dual-rail gateway live on Arc mainnet (chain 5042), where USDC is native gas:1. Synchronous rail — HTTP 402 / x402. Agent hits an endpoint unsigned, gets a 402 + challenge, signs a Permit2 / EIP-712 voucher, retries with PAYMENT-SIGNATURE. Settlement is in-process, sub-second, pay-per-call. No API keys.2. Asynchronous rail — ERC-8183 escrow (NexusJobs). Client locks a USDC budget, provider submits a deliverable hash (IPFS/Arweave),

Within the show hn launch space, the company focuses on its core offering rather than a broad product line.

The company is listed at the Show HN launch stage of development.

Website: nexus-arc.pryx.dev