Tagged “explainers”
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What is a join card?
A plain-language definition of a join card — the short, seller-declared block of fusion metadata that tells a buyer what one record represents and which columns are join handles, verified against the listing's schema.
Read →What is data fusion?
A plain-language definition of data fusion — combining several data sources into one coherent dataset — with the two patterns that cover most real work: table-to-table joins and lookup enrichment.
Read →What is x402?
A plain-language definition of x402 — the open protocol that lets software pay for web resources inside the HTTP request itself, built on the 402 Payment Required status code — and why it matters for AI agents.
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