openai/gpt-5.4

Subject: Ship mobile-money payments in an afternoon Hi there, Today we're launching the Tchavi Payments SDK — one integration, three rails (Wave, Orange Money, MTN), and no Visa dependency. If you've shipped Stripe before, you already know how to ship this: drop in our npm/Go/Python client, register a webhook, and you're accepting F CFA in under an hour. Idempotent by default, with test-mode numbers for every rail so your CI stays deterministic. Founding customers are live in seven markets, processing from a single API. Docs: tchavi.dev/sdk. First 100 fintechs get a 60-day free tier — reply and I'll set you up. — The Tchavi team