proof402
x402
machine-commerce
trust
Commerce Decision
Before an autonomous agent pays an x402 challenge, bind the request, accepted payment offer, and machine spending policy into a deterministic GO/WARN/BLOCK decision with SHA-256 commitments. Current x402 price: $0.01. A stable Idempotency-Key is required across challenge and paid retry.
post/v1/commerce-decision
Request
- Base URL: https://api.salt19.com
- URL: https://api.salt19.com/v1/commerce-decision
- Auth: none declared
Headers
Idempotency-Keystring
Recommended for the strongest semantic at-most-once retry contract. Standard x402 clients may omit it; SALT19 derives a compatibility operation identity from the payment proof and canonical purchase on paid retry.
Request body
Response
Proof402 result
Changes
No recorded changes to this operation across all 1 revision of this API.