Guides and analysis on Open Banking, instant payment rails, stablecoin infrastructure, agentic payments and Rust, written from inside the systems rather than from the press releases.
Topics
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UK rails
Variable Recurring Payments, Verification of Payee, CASS 15 safeguarding and the FCA rulebook, from the API fields down. Start with the VRP guide if you are building recurring account-to-account payments in the UK.
All 12 entriesStandards
What the message standards and instant rails actually expose to an integrator: FedNow with no payment endpoint, the ISO 20022 structured address rules, and where Swift is taking cross-border settlement.
All 74 entriesStablecoins
Off-ramps, settlement, developer tooling and the regulatory perimeter in the UK and EU. The two guides cover crypto-to-fiat infrastructure and the tools worth building on; the rest tracks what Mastercard, Stripe and the issuers are shipping.
All 37 entriesAgents
The protocols agents actually pay with: x402, Google AP2, Circle Agent Stack, MCP and the issuer-side consent models coming out of India and the UK. Comparisons, not press releases.
All 30 entriesEngineering
Why payment infrastructure keeps landing on Rust, what UK fintechs hire for, and the supply-chain and tooling incidents that matter if your build touches money.
All 10 entriesAll entries