diff --git a/src/interface/exchange.ts b/src/interface/exchange.ts
new file mode 100644
index 0000000..aba273c
--- /dev/null
+++ b/src/interface/exchange.ts
@@ -0,0 +1,11 @@
+import { PortfolioProvider } from "./portfolio";
+import { QuoteProvider } from "./quote";
+
+export interface Exchange<Credentials> {
+    readonly credentials: Credentials;
+
+    readonly portfolioProvider: PortfolioProvider;
+    readonly quoteProvider: QuoteProvider;
+
+    readonly name: string;
+}
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