Protocol
x402
A payment protocol pattern that revisits HTTP 402-style payment flows for machine-readable transactions.
x402 is a protocol direction around machine-readable payment requirements and HTTP 402-style payment flows. In agentic commerce, it matters because agents may need to understand when payment is required and how a payment authorization should be represented.
Why it matters
Payment requirements need to be explicit, scoped, and auditable before agents can safely operate across paid APIs or commerce surfaces.
How HARNEXA uses it
HARNEXA treats x402 as part of protocol monitoring and readiness, not as a public payment execution feature.
FAQ
Questions this definition answers.
Does HARNEXA expose x402 payments publicly?
No. HARNEXA keeps public protocol pages to readiness and evidence.
Why include x402 in the glossary?
Because commerce agents will increasingly need to understand machine-readable payment requirements and payment-scope evidence.
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