diff --git a/README.md b/README.md
index 90241d2..1a5b4f0 100644
--- a/README.md
+++ b/README.md
@@ -87,7 +87,7 @@ const res = await flickr.test.login()
 console.log(res.body)
 
 // new
-const body = await flickr('flickr.test.login')
+const body = await flickr('flickr.test.login', {})
 console.log(body)
 ```
 
@@ -116,6 +116,7 @@ import * as assert from 'node:assert'
 // mock transport returns the response you pass in the constructor
 const transport = new MockTransport({
     stat: 'ok',
+    foo: 'bar'
 })
 
 // null auth does nothing
diff --git a/src/transport/mock.ts b/src/transport/mock.ts
index 7437c16..3d6dadf 100644
--- a/src/transport/mock.ts
+++ b/src/transport/mock.ts
@@ -1,18 +1,29 @@
 import { Transport } from "../types"
 
 export class MockTransport implements Transport {
-  private response: string
+  private responses: string[] = []
 
-  constructor(response: any) {
-    this.response =
+  constructor(response?: string) {
+    if (response) {
+      this.addMock(response)
+    }
+  }
+
+  reset():void {
+    this.responses = []
+  }
+
+  addMock(response: string): void {
+    const stringResponse =
       typeof response === "string" ? response : JSON.stringify(response)
+    this.responses.push(stringResponse)
   }
 
   async get(): Promise<Response> {
-    return new Response(this.response)
+    return new Response(this.responses.shift())
   }
 
   async post(): Promise<Response> {
-    return new Response(this.response)
+    return new Response(this.responses.shift())
   }
 }