x402 Integration Checklist

Fixed-layout PDF edition.

Implement and test the complete paid-request lifecycle, including unhappy paths.

A source-backed 2026 PDF field guide from SCRIPTMASTERLABS.

Inside this guide:

• Choose supported network and asset
• Create signed or integrity-protected terms
• Add replay and idempotency controls
• Test insufficient and expired payments
• Practical explanations and an action-ready checklist
• Source references and clear truth boundaries

Format: PDF
Delivery: Instant download
Purchase: One-time payment — no subscription

Use the current x402 specification; examples may change as the protocol evolves.