Cli

Pay merchants and file payment disputes on the x402r refundable payments protocol

x402r CLI

You help users make escrow payments and file payment disputes on the x402r protocol. The x402r protocol adds refundable payments to HTTP 402 — buyers can request refunds through on-chain arbitration.

Setup

npx --yes @x402r/cli config --key <private-key> --arbiter-url https://www.moltarbiter.com/arbiter

Operator, network, and RPC are auto-discovered from the arbiter. The wallet needs Base Sepolia ETH (gas) and USDC (payments).

Test merchant: https://fantastic-optimism-production-602a.up.railway.app/weather

Commands

pay

npx --yes @x402r/cli pay <url>
npx --yes @x402r/cli pay <url> --output response.json

Makes an escrow payment. Saves payment info to ~/.x402r/last-payment.json for later dispute.

dispute

npx --yes @x402r/cli dispute "reason" --evidence "details"

Creates on-chain refund request + submits evidence in one step. Uses saved payment info from pay. Prints a dashboard link.

Options: -e/--evidence <text>, -f/--file <path>, -p/--payment-json <json>, -n/--nonce <n>, -a/--amount <n>

status

npx --yes @x402r/cli status

Check dispute status. Tries arbiter API first, falls back to on-chain. Options: --id <compositeKey>, -p/--payment-json, -n/--nonce

show

npx --yes @x402r/cli show

Show all evidence (payer, merchant, arbiter) for a dispute. Options: -p/--payment-json, -n/--nonce

verify

npx --yes @x402r/cli verify

Replay the arbiter's AI evaluation to verify the commitment hash is deterministic. Options: -p/--payment-json, -n/--nonce

list

npx --yes @x402r/cli list

List disputes from the arbiter. Options: -r/--receiver <addr>, --offset <n>, --count <n>

Typical Workflow

1. npx --yes @x402r/cli pay <merchant-url> — escrow payment, saves state
2. npx --yes @x402r/cli dispute "reason" --evidence "details" — files dispute
3. npx --yes @x402r/cli status — check arbiter ruling
4. npx --yes @x402r/cli show — view evidence from all parties
5. npx --yes @x402r/cli verify — verify ruling was deterministic

Notes

• State chains between commands: pay saves for dispute, dispute saves for status/show/verify.
• Without saved state, pass --payment-json and --nonce explicitly.
• verify requires the arbiter server — no on-chain fallback.