How 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.
30guides · 3 categories
28Comparisons2026-07-30
A pay-per-call API charges per request with no monthly floor. Here is the break-even math against a subscription, and when each pricing model actually wins.
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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.
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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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