Uniswap x402 Payments with Cross-Chain Funding

Purpose: Use Zerion CLI to verify and optionally position capital across chains, then pay x402 HTTP 402 challenges in any token using the Uniswap /pay-with-any-token skill.

Scope: This skill covers x402 only. MPP/Tempo is out of scope.

Key Commands

Uniswap skill (invoke in agent context):

• /pay-with-any-token — pays an x402 HTTP 402 challenge by swapping tokens via Uniswap

Zerion CLI (shell):

• zerion positions <address> — check token balances by chain
• zerion bridge <from-chain> <from-token> <amount> <to-chain> <to-token> --to-address <address> --cheapest — optionally pre-position capital to the signing wallet
• zerion portfolio <address> — verify balance before paying

Requirements