What is Fiscal402?
Fiscal402 is post-settlement fiscal infrastructure for autonomous commerce. It turns machine payments into verifiable fiscal events.
What is x402?
x402 is a payment protocol. Fiscal402 currently supports x402 v2 exact as its first payment protocol. Fiscal402 observes settlement after payment; it does not issue HTTP 402 or move funds.
Does Fiscal402 process payments?
No. Fiscal402 does not settle payments, route funds, split transfers, or act as an x402 facilitator.
Does Fiscal402 hold funds?
No. Fiscal402 is non-custodial. It does not custody customer funds and does not move money.
What happens after settlement?
After an x402 payment has already settled, Fiscal402 ingests settlement evidence, produces an EU fiscal determination when applicable, emits a UBL 2.1 artifact, and issues a signed fiscal402.receipt.
What is fiscal402.receipt?
fiscal402.receipt/1.0.0 is the public protocol object. It binds settlement, determination, artifact hashes, a canonical payload hash, and an Ed25519 signature so another system can verify integrity.
Can another system verify a receipt?
Yes. Independent verification uses the receipt, the issuer JWKS, and optionally the bound UBL bytes. A source-only verifier lives in the public GitHub repository. It is not published to npm yet. VERIFIED means cryptographic integrity, not tax-authority acceptance.
Does Fiscal402 support EU VAT?
Yes. EU VAT is the first production jurisdiction engine. It classifies common EU digital-service VAT patterns. It is not tax advice and not a guarantee of tax-authority acceptance.
Does Fiscal402 guarantee tax compliance?
No. Fiscal402 does not provide tax advice, file VAT returns, or guarantee legal compliance or tax-authority approval.
Which payment protocols are supported?
x402 v2 exact is the only live payment protocol. MPP is not implemented. AP2 is not implemented.
Is Fiscal402 free?
Fiscal402 is free during beta at 0 bps. That is not permanently free. After beta the standard rate is 50 bps (0.5% of fiscalized volume). High-volume pricing is custom.
Is Fiscal402 open source?
The protocol specification, receipt schema, test vectors, and verifier source are public. The fiscal execution engine remains proprietary.
Does Fiscal402 support MPP or AP2?
No. MPP is not implemented. AP2 is not implemented.
How can a merchant integrate?
Join the beta, then POST settled x402 evidence to https://api.fiscal402.com/settlements. Retrieve the UBL artifact and fiscal402.receipt, and verify against JWKS. HTTP is the public integration path. Typed npm packages are not published yet.