Guides for the BAPARA protocol, xo Money API, webhooks and rail integrations.
x402 + budgets + AP2. Full spec, SDKs and facilitator reference.
Programmatic access to accounts, transfers, cards and webhooks.
Provision physical and virtual cards. Freeze, top-up, PIN.
PIX, SPEI, SEPA, ACH — with idempotency, retries and receipt formats.
Signed delivery, replay windows, ordered vs unordered streams.
Run your own facilitator in Fastify + viem in <200 LOC.