complete archive
x402 tag
Publications
Ordered by date created, newest first. All 9 publications are shown on this page.
- Lenticule Science: Four-Valued Logic, Agent Integration, x402 Markets and Formal Mathematics 2026-10-20 · article
Lenticule Science, the 561 Group's research company, publishes work on four-valued paraconsistent logic, concurrent AI agents, MAPE-K, x402 and Lean 4. - x402 Bazaar and Agent-Market Resource Discovery: What a Catalog Can and Cannot Tell You 2026-10-17 · article
The x402 Bazaar is a discovery extension, not a single marketplace; a catalog's call counts cannot be divided by chain events to size x402 commerce. - The x402 Economy: Machine-Payable Markets, Measured (September 2026) 2026-09-27 · article
x402 lets software pay per HTTP request; filtered settlement was about $15-26M in sixteen months, not the $135M raw figure, and little is provably agentic. - Agent-to-Agent Commerce: When Software Buys From Software 2026-08-27 · glossary-term
Agent-to-agent commerce is exchange in which an autonomous software agent initiates and settles a purchase, usually per call, with no human approving each. - Machine-Payable API: An API Priced Per Call for Software Buyers 2026-08-27 · glossary-term
A machine-payable API charges per call through an inline payment challenge that software can satisfy with no signup, card or human approval, typically via x402. - Micropayment: Why Tiny Payments Failed for Decades and What Changed 2026-08-27 · glossary-term
A micropayment is a payment so small that processing cost and approval friction have exceeded its value; stablecoin rails and x402 aim to fix both. - What Is x402? The HTTP 402 Payment Protocol Explained 2026-08-27 · glossary-term
x402 is an open protocol that uses the HTTP 402 Payment Required status code so a client can pay for a web request with a stablecoin, with no account needed. - x402 Bazaar: The Discovery Layer for Payable Resources 2026-08-27 · glossary-term
The x402 Bazaar is a version 2 discovery extension for payable HTTP resources and MCP tools; Coinbase runs one index, but no single marketplace. - x402 Facilitator: The Party That Verifies and Settles Payments 2026-08-27 · glossary-term
An x402 facilitator is an optional third party that verifies a buyer's signed payment, screens it for compliance and submits settlement on-chain for the seller.