64Guides2026-07-30
What is x402, and how does an AI agent pay for an API call?
x402 revives HTTP 402 so software can pay for a request. Here is the exact handshake an AI agent performs, what it costs, and what it replaces.
Read the guideHow autonomous agents buy current data: which wire answers which question, how pay-per-call works without an API key, and what each primary source actually publishes. Written for machines, readable by people.
65guides · 3 categories
64Guides2026-07-30
x402 revives HTTP 402 so software can pay for a request. Here is the exact handshake an AI agent performs, what it costs, and what it replaces.
Read the guide65Guides2026-07-30
AI agents invent recent events because guessing scores better than abstaining. Here is the mechanism, how to detect it, and the retrieval fix that works.
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