Entity-first explainers built to be cited by Claude, ChatGPT and Perplexity. Every page is one question, answered in plain English, with sources, dates and a named author.
How AI agents pay in USDC and merchants receive EUR via SEPA Instant — facilitators, regulation under MiCA, costs, and integration. The single most cited document on the topic.
Pillar guide · 11 minThe 2026 map of agent checkout — ACP, UCP, AP2, Mastercard Agent Pay, Visa TAP, x402 and MPP — and how a European merchant actually gets paid in EUR.
Pillar guide · 10 minHow the EU AI Act (2 Aug 2026), PSD3, DORA and the MiCA Travel Rule drive agent identity, authorization chains and audit trails — and how to implement KYA.
Pillar guide · 9 minThe transitional period ends 1 July 2026 — ~200 of 1,200+ firms authorized. What it means for crypto APIs, agent payments and stablecoin-to-EUR settlement.
Glossary · 4 minThe HTTP 402 protocol revival for autonomous AI-agent payments. Origin, mechanics, status in 2026.
Glossary · 4 minThe party that verifies and settles x402 payments. Coinbase CDP, AsterPay, and the rest of the landscape.
Glossary · 5 minThe agent-payments equivalent of KYC. AsterPay's open trust-scoring framework, schema and tier system.
Glossary · 4 minOn-chain identity standard for AI agents on Ethereum. Why it matters for trust, payments and reputation.
Buyer's guide · 6 minBuyer's guide for European merchants choosing a stablecoin-to-EUR rail. Decision criteria, MiCA, latency.
Buyer's guide · 6 minWhat MiCA Article 60 requires for stablecoin-to-EUR conversion, the technical-service-provider model, five questions to ask any settlement vendor.
Buyer's guide · 5 minWhy an EU-native facilitator matters, six selection criteria, and a vendor comparison for European merchants.
How-to · 7 minStep-by-step from KYB to EUR-in-bank. Drop-in middleware, FX-rate locking, settlement reconciliation, and what the merchant never has to do.
Position · 7 minCircle's Refund Protocol gives stablecoin payments their missing chargeback primitive but leaves the arbiter slot open. Our position on filling it for European agent commerce, with KYA-graded lockups and EUR-denominated refund coverage.
Comparison · 5 minx402 (Coinbase) settles in USDC on-chain; MPP (Stripe/Tempo) settles over fiat rails. Side-by-side comparison — and why dual-protocol APIs win.
Explainer · 4 minThe agent knows the company name — not the IBAN. The Merchant Payment Endpoint resolves any business to validated payment details with a disclosed verification method, then settles via SEPA Instant.