About this reference

payful.ai is an independent editorial reference that tracks AI-agent-enabled payment protocols and their real-world deployments. It exists to be an accurate, current, machine-readable index of a fast-moving space — a comparison matrix, per-protocol reference pages, a deployments registry, and a dated changelog.

It is a reference resource, not a product. There is nothing to sign up for and nothing to buy, and no payments are sent, held, or processed here.

How entries are sourced and verified

Every non-draft entry carries at least one real source and a lastVerified date reflecting when a human last checked it against those sources. Where figures or claims vary between sources, the wording is hedged and the entry is dated rather than presented as settled fact.

Entries that have been seeded but not yet verified are marked as unverified drafts: they are visibly flagged, kept intentionally incomplete, and excluded from the structured data exposed to machines until a person verifies them.

Submitting corrections and additions

Corrections and additions are welcome and are the primary way this reference stays accurate. Use the form below — linking a source makes a correction far faster to verify and publish. Submissions are inbound only; this site does not contact protocol operators or trademark holders.