diff --git a/CLAUDE.md b/CLAUDE.md
index 9dfa8aa..c5a1e04 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -4,7 +4,9 @@ Guidance for AI assistants working in this repository.
 
 ## Project
 
-`sumit-react` — React component (`<SumitCheckout />`), checkout state hook (`useSumitCheckout`), and Next.js route helpers (`createSumitChargeRoute`, `createSumitWebhookRoute`) for SUMIT / OfficeGuy / Upay payments.
+`sumit-react` — React component (`<SumitCheckout />`), checkout state hook (`useSumitCheckout`), and Next.js route helpers (`createSumitChargeRoute`, `createSumitWebhookRoute`) for SUMIT (formerly OfficeGuy) payments.
+
+SUMIT is the billing platform. It delegates card clearing to partner processors — Upay is one, others exist — so processor-level error codes (`Upay_*`) appear inside SUMIT response bodies and are scrubbed by `redactSumitPayload` from `sumit-api` before any event leaves a route handler.
 
 Companion package: [`sumit-api`](https://github.com/Digitizers/sumit-api) (peer dependency).
 
diff --git a/README.md b/README.md
index 6ad7d8d..c7982a8 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,9 @@
 [![react](https://img.shields.io/badge/react-%E2%89%A518-61DAFB?logo=react&logoColor=white)](package.json)
 [![next](https://img.shields.io/badge/next.js-app%20router-000000?logo=next.js&logoColor=white)](https://nextjs.org)
 
-> React components and Next.js route helpers for [SUMIT / OfficeGuy / Upay](https://sumit.co.il) payments. The companion to [`sumit-api`](https://github.com/Digitizers/sumit-api).
+> React components and Next.js route helpers for [SUMIT](https://sumit.co.il) (formerly **OfficeGuy**) payments. The companion to [`sumit-api`](https://github.com/Digitizers/sumit-api).
+>
+> SUMIT is the billing platform. The actual card clearing is performed by partner processors that SUMIT routes to — **Upay** is one such clearer, and SUMIT can integrate with others. From the perspective of this package, you talk to SUMIT; processor-level error codes (e.g. `Upay_*`) only show up inside SUMIT's response bodies.
 
 Ship a working SUMIT checkout flow in a React or Next.js app with two files: a Client Component and a route handler.
 
diff --git a/package.json b/package.json
index a2bf864..cdc4668 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "sumit-react",
   "version": "0.1.1",
-  "description": "React components and Next.js route helpers for SUMIT/OfficeGuy/Upay payments.",
+  "description": "React components and Next.js route helpers for SUMIT (formerly OfficeGuy) payments.",
   "license": "MIT",
   "type": "module",
   "sideEffects": false,