From 0fd5f9744a09175e39b9ae099f8dd3d8f691b06d Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 7 Apr 2026 21:14:33 +0000
Subject: [PATCH 1/3] Initial plan


From 19a00700bad3ab0110418da0b0ac9b7787d1b066 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 7 Apr 2026 21:19:28 +0000
Subject: [PATCH 2/3] wip: switching to response builder pattern

Agent-Logs-Url: https://github.com/counterfact/example-petstore/sessions/efc70a58-8d38-45cc-b6f2-0ade49cccdfa

Co-authored-by: pmcelhaney <51504+pmcelhaney@users.noreply.github.com>
---
 api/routes/_.context.ts               | 191 ++++++++++++++++++++++++--
 api/routes/pet.ts                     |  16 ++-
 api/routes/pet/findByStatus.ts        |   5 +-
 api/routes/pet/findByTags.ts          |   5 +-
 api/routes/pet/{petId}.ts             |  34 ++++-
 api/routes/pet/{petId}/uploadImage.ts |  15 +-
 api/routes/store/inventory.ts         |   5 +-
 api/routes/store/order.ts             |   5 +-
 api/routes/store/order/{orderId}.ts   |  16 ++-
 api/routes/user.ts                    |   5 +-
 api/routes/user/createWithList.ts     |   5 +-
 api/routes/user/login.ts              |  10 +-
 api/routes/user/logout.ts             |   4 +-
 api/routes/user/{username}.ts         |  24 +++-
 package-lock.json                     |  36 +++--
 15 files changed, 317 insertions(+), 59 deletions(-)

diff --git a/api/routes/_.context.ts b/api/routes/_.context.ts
index 0ead33d..8edd3d4 100644
--- a/api/routes/_.context.ts
+++ b/api/routes/_.context.ts
@@ -1,13 +1,186 @@
 /**
-* This is the default context for Counterfact.
-*
-* It defines the context object in the REPL 
-* and the $.context object in the code.
-*
-* Add properties and methods to suit your needs.
-* 
-* See https://counterfact.dev/docs/usage.html#working-with-state-the-codecontextcode-object-and-codecontexttscode
-*/
+ * This is the default context for Counterfact.
+ *
+ * It defines the context object in the REPL
+ * and the $.context object in the code.
+ *
+ * Add properties and methods to suit your needs.
+ *
+ * See https://counterfact.dev/docs/usage.html#working-with-state-the-codecontextcode-object-and-codecontexttscode
+ */
+
+import type { Pet } from "../types/components/schemas/Pet.js";
+import type { User } from "../types/components/schemas/User.js";
+import type { Order } from "../types/components/schemas/Order.js";
+
 export class Context {
+  pets: Pet[] = [
+    {
+      id: 1,
+      name: "Buddy",
+      category: { id: 1, name: "Dogs" },
+      photoUrls: ["https://example.com/buddy.jpg"],
+      tags: [{ id: 1, name: "friendly" }],
+      status: "available",
+    },
+    {
+      id: 2,
+      name: "Whiskers",
+      category: { id: 2, name: "Cats" },
+      photoUrls: ["https://example.com/whiskers.jpg"],
+      tags: [{ id: 2, name: "indoor" }],
+      status: "available",
+    },
+    {
+      id: 3,
+      name: "Goldie",
+      category: { id: 3, name: "Fish" },
+      photoUrls: ["https://example.com/goldie.jpg"],
+      tags: [],
+      status: "pending",
+    },
+    {
+      id: 4,
+      name: "Max",
+      category: { id: 1, name: "Dogs" },
+      photoUrls: ["https://example.com/max.jpg"],
+      tags: [{ id: 3, name: "trained" }],
+      status: "sold",
+    },
+  ];
+
+  users: User[] = [
+    {
+      id: 1,
+      username: "user1",
+      firstName: "John",
+      lastName: "Doe",
+      email: "john@example.com",
+      password: "password123",
+      phone: "555-1234",
+      userStatus: 1,
+    },
+    {
+      id: 2,
+      username: "jane_smith",
+      firstName: "Jane",
+      lastName: "Smith",
+      email: "jane@example.com",
+      password: "secret456",
+      phone: "555-5678",
+      userStatus: 1,
+    },
+  ];
+
+  orders: Order[] = [
+    {
+      id: 1,
+      petId: 1,
+      quantity: 1,
+      shipDate: "2024-01-15T10:00:00Z",
+      status: "placed",
+      complete: false,
+    },
+    {
+      id: 2,
+      petId: 4,
+      quantity: 1,
+      shipDate: "2024-01-10T08:00:00Z",
+      status: "delivered",
+      complete: true,
+    },
+  ];
+
+  private nextPetId = 5;
+  private nextUserId = 3;
+  private nextOrderId = 3;
+
+  addPet(pet: Pet): Pet {
+    const newPet = { ...pet, id: this.nextPetId++ };
+    this.pets.push(newPet);
+    return newPet;
+  }
+
+  updatePet(pet: Pet): Pet | undefined {
+    const index = this.pets.findIndex((p) => p.id === pet.id);
+    if (index === -1) return undefined;
+    this.pets[index] = pet;
+    return pet;
+  }
+
+  getPetById(id: number): Pet | undefined {
+    return this.pets.find((p) => p.id === id);
+  }
+
+  deletePet(id: number): boolean {
+    const index = this.pets.findIndex((p) => p.id === id);
+    if (index === -1) return false;
+    this.pets.splice(index, 1);
+    return true;
+  }
+
+  findPetsByStatus(status: string): Pet[] {
+    return this.pets.filter((p) => p.status === status);
+  }
+
+  findPetsByTags(tags: string[]): Pet[] {
+    return this.pets.filter((p) =>
+      p.tags?.some((t) => t.name !== undefined && tags.includes(t.name)),
+    );
+  }
+
+  addUser(user: User): User {
+    const newUser = { ...user, id: this.nextUserId++ };
+    this.users.push(newUser);
+    return newUser;
+  }
+
+  getUserByUsername(username: string): User | undefined {
+    return this.users.find((u) => u.username === username);
+  }
+
+  updateUser(username: string, user: User): User | undefined {
+    const index = this.users.findIndex((u) => u.username === username);
+    if (index === -1) return undefined;
+    this.users[index] = { ...user, username };
+    return this.users[index];
+  }
+
+  deleteUser(username: string): boolean {
+    const index = this.users.findIndex((u) => u.username === username);
+    if (index === -1) return false;
+    this.users.splice(index, 1);
+    return true;
+  }
+
+  placeOrder(order: Order): Order {
+    const newOrder = { ...order, id: this.nextOrderId++ };
+    this.orders.push(newOrder);
+    return newOrder;
+  }
+
+  getOrderById(id: number): Order | undefined {
+    return this.orders.find((o) => o.id === id);
+  }
+
+  deleteOrder(id: number): boolean {
+    const index = this.orders.findIndex((o) => o.id === id);
+    if (index === -1) return false;
+    this.orders.splice(index, 1);
+    return true;
+  }
 
+  getInventory(): { [key: string]: number } {
+    const inventory: { [key: string]: number } = {
+      available: 0,
+      pending: 0,
+      sold: 0,
+    };
+    for (const pet of this.pets) {
+      if (pet.status) {
+        inventory[pet.status] = (inventory[pet.status] ?? 0) + 1;
+      }
+    }
+    return inventory;
+  }
 }
diff --git a/api/routes/pet.ts b/api/routes/pet.ts
index a7e23a5..c026489 100644
--- a/api/routes/pet.ts
+++ b/api/routes/pet.ts
@@ -1,10 +1,18 @@
 import type { updatePet } from "../types/paths/pet.types.js";
 import type { addPet } from "../types/paths/pet.types.js";
 
-export const PUT: updatePet = async ($) => {
-  return $.response[200].random();
+export const PUT: updatePet = ($) => {
+  if (!$.body.id) {
+    return { status: 400 };
+  }
+  const updated = $.context.updatePet($.body);
+  if (!updated) {
+    return { status: 404 };
+  }
+  return { status: 200, body: updated };
 };
 
-export const POST: addPet = async ($) => {
-  return $.response[200].random();
+export const POST: addPet = ($) => {
+  const pet = $.context.addPet($.body);
+  return { status: 200, body: pet };
 };
diff --git a/api/routes/pet/findByStatus.ts b/api/routes/pet/findByStatus.ts
index 8b9195f..3468dc9 100644
--- a/api/routes/pet/findByStatus.ts
+++ b/api/routes/pet/findByStatus.ts
@@ -1,5 +1,6 @@
 import type { findPetsByStatus } from "../../types/paths/pet/findByStatus.types.js";
 
-export const GET: findPetsByStatus = async ($) => {
-  return $.response[200].random();
+export const GET: findPetsByStatus = ($) => {
+  const pets = $.context.findPetsByStatus($.query.status);
+  return { status: 200, body: pets };
 };
diff --git a/api/routes/pet/findByTags.ts b/api/routes/pet/findByTags.ts
index 378b273..61b3068 100644
--- a/api/routes/pet/findByTags.ts
+++ b/api/routes/pet/findByTags.ts
@@ -1,5 +1,6 @@
 import type { findPetsByTags } from "../../types/paths/pet/findByTags.types.js";
 
-export const GET: findPetsByTags = async ($) => {
-  return $.response[200].random();
+export const GET: findPetsByTags = ($) => {
+  const pets = $.context.findPetsByTags($.query.tags);
+  return { status: 200, body: pets };
 };
diff --git a/api/routes/pet/{petId}.ts b/api/routes/pet/{petId}.ts
index 4f53319..ae0e6fe 100644
--- a/api/routes/pet/{petId}.ts
+++ b/api/routes/pet/{petId}.ts
@@ -2,14 +2,36 @@ import type { getPetById } from "../../types/paths/pet/{petId}.types.js";
 import type { updatePetWithForm } from "../../types/paths/pet/{petId}.types.js";
 import type { deletePet } from "../../types/paths/pet/{petId}.types.js";
 
-export const GET: getPetById = async ($) => {
-  return $.response[200].random();
+export const GET: getPetById = ($) => {
+  const pet = $.context.getPetById($.path.petId);
+  if (!pet) {
+    return { status: 404 };
+  }
+  return { status: 200, body: pet };
 };
 
-export const POST: updatePetWithForm = async ($) => {
-  return $.response[200].random();
+export const POST: updatePetWithForm = ($) => {
+  const pet = $.context.getPetById($.path.petId);
+  if (!pet) {
+    return { status: 400 };
+  }
+  const updated = $.context.updatePet({
+    ...pet,
+    ...($.query.name !== undefined ? { name: $.query.name } : {}),
+    ...($.query.status !== undefined
+      ? { status: $.query.status as "available" | "pending" | "sold" }
+      : {}),
+  });
+  if (!updated) {
+    return { status: 400 };
+  }
+  return { status: 200, body: updated };
 };
 
-export const DELETE: deletePet = async ($) => {
-  return $.response[200];
+export const DELETE: deletePet = ($) => {
+  const deleted = $.context.deletePet($.path.petId);
+  if (!deleted) {
+    return { status: 400 };
+  }
+  return { status: 200 };
 };
diff --git a/api/routes/pet/{petId}/uploadImage.ts b/api/routes/pet/{petId}/uploadImage.ts
index f3262ba..c06d1d8 100644
--- a/api/routes/pet/{petId}/uploadImage.ts
+++ b/api/routes/pet/{petId}/uploadImage.ts
@@ -1,5 +1,16 @@
 import type { uploadFile } from "../../../types/paths/pet/{petId}/uploadImage.types.js";
 
-export const POST: uploadFile = async ($) => {
-  return $.response[200].random();
+export const POST: uploadFile = ($) => {
+  const pet = $.context.getPetById($.path.petId);
+  if (!pet) {
+    return { status: 404 };
+  }
+  return {
+    status: 200,
+    body: {
+      code: 200,
+      type: "unknown",
+      message: `File uploaded for pet ${$.path.petId}`,
+    },
+  };
 };
diff --git a/api/routes/store/inventory.ts b/api/routes/store/inventory.ts
index 5f57b3a..d34d37b 100644
--- a/api/routes/store/inventory.ts
+++ b/api/routes/store/inventory.ts
@@ -1,5 +1,6 @@
 import type { getInventory } from "../../types/paths/store/inventory.types.js";
 
-export const GET: getInventory = async ($) => {
-  return $.response[200].random();
+export const GET: getInventory = ($) => {
+  const inventory = $.context.getInventory();
+  return { status: 200, body: inventory };
 };
diff --git a/api/routes/store/order.ts b/api/routes/store/order.ts
index 49e7097..0da7b81 100644
--- a/api/routes/store/order.ts
+++ b/api/routes/store/order.ts
@@ -1,5 +1,6 @@
 import type { placeOrder } from "../../types/paths/store/order.types.js";
 
-export const POST: placeOrder = async ($) => {
-  return $.response[200].random();
+export const POST: placeOrder = ($) => {
+  const order = $.context.placeOrder($.body);
+  return { status: 200, body: order };
 };
diff --git a/api/routes/store/order/{orderId}.ts b/api/routes/store/order/{orderId}.ts
index 1604417..8de2d21 100644
--- a/api/routes/store/order/{orderId}.ts
+++ b/api/routes/store/order/{orderId}.ts
@@ -1,10 +1,18 @@
 import type { getOrderById } from "../../../types/paths/store/order/{orderId}.types.js";
 import type { deleteOrder } from "../../../types/paths/store/order/{orderId}.types.js";
 
-export const GET: getOrderById = async ($) => {
-  return $.response[200].random();
+export const GET: getOrderById = ($) => {
+  const order = $.context.getOrderById($.path.orderId);
+  if (!order) {
+    return { status: 404 };
+  }
+  return { status: 200, body: order };
 };
 
-export const DELETE: deleteOrder = async ($) => {
-  return $.response[200];
+export const DELETE: deleteOrder = ($) => {
+  const deleted = $.context.deleteOrder($.path.orderId);
+  if (!deleted) {
+    return { status: 404 };
+  }
+  return { status: 200 };
 };
diff --git a/api/routes/user.ts b/api/routes/user.ts
index da9a0a4..a030408 100644
--- a/api/routes/user.ts
+++ b/api/routes/user.ts
@@ -1,5 +1,6 @@
 import type { createUser } from "../types/paths/user.types.js";
 
-export const POST: createUser = async ($) => {
-  return $.response[200].random();
+export const POST: createUser = ($) => {
+  const user = $.context.addUser($.body);
+  return { status: 200, body: user };
 };
diff --git a/api/routes/user/createWithList.ts b/api/routes/user/createWithList.ts
index 72c66a0..12d103f 100644
--- a/api/routes/user/createWithList.ts
+++ b/api/routes/user/createWithList.ts
@@ -1,5 +1,6 @@
 import type { createUsersWithListInput } from "../../types/paths/user/createWithList.types.js";
 
-export const POST: createUsersWithListInput = async ($) => {
-  return $.response[200].random();
+export const POST: createUsersWithListInput = ($) => {
+  const users = $.body.map((user) => $.context.addUser(user));
+  return { status: 200, body: users[0] };
 };
diff --git a/api/routes/user/login.ts b/api/routes/user/login.ts
index 27ab891..1906fa9 100644
--- a/api/routes/user/login.ts
+++ b/api/routes/user/login.ts
@@ -1,5 +1,11 @@
 import type { loginUser } from "../../types/paths/user/login.types.js";
 
-export const GET: loginUser = async ($) => {
-  return $.response[200].random();
+export const GET: loginUser = ($) => {
+  const user = $.context.users.find(
+    (u) => u.username === $.query.username && u.password === $.query.password,
+  );
+  if (!user) {
+    return { status: 400 };
+  }
+  return { status: 200, body: `Logged in as ${user.username}` };
 };
diff --git a/api/routes/user/logout.ts b/api/routes/user/logout.ts
index 1ce507e..bd883b4 100644
--- a/api/routes/user/logout.ts
+++ b/api/routes/user/logout.ts
@@ -1,5 +1,5 @@
 import type { logoutUser } from "../../types/paths/user/logout.types.js";
 
-export const GET: logoutUser = async ($) => {
-  return $.response[200];
+export const GET: logoutUser = () => {
+  return { status: 200 };
 };
diff --git a/api/routes/user/{username}.ts b/api/routes/user/{username}.ts
index 9064fa5..841e58f 100644
--- a/api/routes/user/{username}.ts
+++ b/api/routes/user/{username}.ts
@@ -2,14 +2,26 @@ import type { getUserByName } from "../../types/paths/user/{username}.types.js";
 import type { updateUser } from "../../types/paths/user/{username}.types.js";
 import type { deleteUser } from "../../types/paths/user/{username}.types.js";
 
-export const GET: getUserByName = async ($) => {
-  return $.response[200].random();
+export const GET: getUserByName = ($) => {
+  const user = $.context.getUserByUsername($.path.username);
+  if (!user) {
+    return { status: 404 };
+  }
+  return { status: 200, body: user };
 };
 
-export const PUT: updateUser = async ($) => {
-  return $.response[200];
+export const PUT: updateUser = ($) => {
+  const updated = $.context.updateUser($.path.username, $.body);
+  if (!updated) {
+    return { status: 404 };
+  }
+  return { status: 200 };
 };
 
-export const DELETE: deleteUser = async ($) => {
-  return $.response[200];
+export const DELETE: deleteUser = ($) => {
+  const deleted = $.context.deleteUser($.path.username);
+  if (!deleted) {
+    return { status: 404 };
+  }
+  return { status: 200 };
 };
diff --git a/package-lock.json b/package-lock.json
index e91e9b6..307800d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -565,6 +565,7 @@
       "resolved": "https://registry.npmjs.org/@types/accepts/-/accepts-1.3.7.tgz",
       "integrity": "sha512-Pay9fq2lM2wXPWbteBsRAGiWH2hig4ZE2asK+mm7kUzlxRTfL961rj89I6zV/E3PcIkDqyuBEcMxFT7rccugeQ==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@types/node": "*"
       }
@@ -574,6 +575,7 @@
       "resolved": "https://registry.npmjs.org/@types/body-parser/-/body-parser-1.19.6.tgz",
       "integrity": "sha512-HLFeCYgz89uk22N5Qg3dvGvsv46B8GLvKKo1zKG4NybA8U2DiEO3w9lqGg29t/tfLRJpJ6iQxnVw4OnB7MoM9g==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@types/connect": "*",
         "@types/node": "*"
@@ -584,6 +586,7 @@
       "resolved": "https://registry.npmjs.org/@types/connect/-/connect-3.4.38.tgz",
       "integrity": "sha512-K6uROf1LD88uDQqJCktA4yzL1YYAK6NgfsI0v/mTgyPKWsX1CnJ0XPSDhViejru1GcRkLWb8RlzFYJRqGUbaug==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@types/node": "*"
       }
@@ -592,13 +595,15 @@
       "version": "0.5.9",
       "resolved": "https://registry.npmjs.org/@types/content-disposition/-/content-disposition-0.5.9.tgz",
       "integrity": "sha512-8uYXI3Gw35MhiVYhG3s295oihrxRyytcRHjSjqnqZVDDy/xcGBRny7+Xj1Wgfhv5QzRtN2hB2dVRBUX9XW3UcQ==",
-      "license": "MIT"
+      "license": "MIT",
+      "peer": true
     },
     "node_modules/@types/cookies": {
       "version": "0.9.2",
       "resolved": "https://registry.npmjs.org/@types/cookies/-/cookies-0.9.2.tgz",
       "integrity": "sha512-1AvkDdZM2dbyFybL4fxpuNCaWyv//0AwsuUk2DWeXyM1/5ZKm6W3z6mQi24RZ4l2ucY+bkSHzbDVpySqPGuV8A==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@types/connect": "*",
         "@types/express": "*",
@@ -611,6 +616,7 @@
       "resolved": "https://registry.npmjs.org/@types/express/-/express-5.0.6.tgz",
       "integrity": "sha512-sKYVuV7Sv9fbPIt/442koC7+IIwK5olP1KWeD88e/idgoJqDm3JV/YUiPwkoKK92ylff2MGxSz1CSjsXelx0YA==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@types/body-parser": "*",
         "@types/express-serve-static-core": "^5.0.0",
@@ -622,6 +628,7 @@
       "resolved": "https://registry.npmjs.org/@types/express-serve-static-core/-/express-serve-static-core-5.1.1.tgz",
       "integrity": "sha512-v4zIMr/cX7/d2BpAEX3KNKL/JrT1s43s96lLvvdTmza1oEvDudCqK9aF/djc/SWgy8Yh0h30TZx5VpzqFCxk5A==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@types/node": "*",
         "@types/qs": "*",
@@ -633,13 +640,15 @@
       "version": "1.5.6",
       "resolved": "https://registry.npmjs.org/@types/http-assert/-/http-assert-1.5.6.tgz",
       "integrity": "sha512-TTEwmtjgVbYAzZYWyeHPrrtWnfVkm8tQkP8P21uQifPgMRgjrow3XDEYqucuC8SKZJT7pUnhU/JymvjggxO9vw==",
-      "license": "MIT"
+      "license": "MIT",
+      "peer": true
     },
     "node_modules/@types/http-errors": {
       "version": "2.0.5",
       "resolved": "https://registry.npmjs.org/@types/http-errors/-/http-errors-2.0.5.tgz",
       "integrity": "sha512-r8Tayk8HJnX0FztbZN7oVqGccWgw98T/0neJphO91KkmOzug1KkofZURD4UaD5uH8AqcFLfdPErnBod0u71/qg==",
-      "license": "MIT"
+      "license": "MIT",
+      "peer": true
     },
     "node_modules/@types/json-schema": {
       "version": "7.0.15",
@@ -651,7 +660,8 @@
       "version": "1.0.6",
       "resolved": "https://registry.npmjs.org/@types/keygrip/-/keygrip-1.0.6.tgz",
       "integrity": "sha512-lZuNAY9xeJt7Bx4t4dx0rYCDqGPW8RXhQZK1td7d4H6E9zYbLoOtjBvfwdTKpsyxQI/2jv+armjX/RW+ZNpXOQ==",
-      "license": "MIT"
+      "license": "MIT",
+      "peer": true
     },
     "node_modules/@types/koa": {
       "version": "3.0.2",
@@ -675,6 +685,7 @@
       "resolved": "https://registry.npmjs.org/@types/koa-compose/-/koa-compose-3.2.9.tgz",
       "integrity": "sha512-BroAZ9FTvPiCy0Pi8tjD1OfJ7bgU1gQf0eR6e1Vm+JJATy9eKOG3hQMFtMciMawiSOVnLMdmUOC46s7HBhSTsA==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@types/koa": "*"
       }
@@ -684,6 +695,7 @@
       "resolved": "https://registry.npmjs.org/@types/node/-/node-25.5.2.tgz",
       "integrity": "sha512-tO4ZIRKNC+MDWV4qKVZe3Ql/woTnmHDr5JD8UI5hn2pwBrHEwOEMZK7WlNb5RKB6EoJ02gwmQS9OrjuFnZYdpg==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "undici-types": "~7.18.0"
       }
@@ -698,19 +710,22 @@
       "version": "6.15.0",
       "resolved": "https://registry.npmjs.org/@types/qs/-/qs-6.15.0.tgz",
       "integrity": "sha512-JawvT8iBVWpzTrz3EGw9BTQFg3BQNmwERdKE22vlTxawwtbyUSlMppvZYKLZzB5zgACXdXxbD3m1bXaMqP/9ow==",
-      "license": "MIT"
+      "license": "MIT",
+      "peer": true
     },
     "node_modules/@types/range-parser": {
       "version": "1.2.7",
       "resolved": "https://registry.npmjs.org/@types/range-parser/-/range-parser-1.2.7.tgz",
       "integrity": "sha512-hKormJbkJqzQGhziax5PItDUTMAM9uE2XXQmM37dyd4hVM+5aVl7oVxMVUiVQn2oCQFN/LKCZdvSM0pFRqbSmQ==",
-      "license": "MIT"
+      "license": "MIT",
+      "peer": true
     },
     "node_modules/@types/send": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/@types/send/-/send-1.2.1.tgz",
       "integrity": "sha512-arsCikDvlU99zl1g69TcAB3mzZPpxgw0UQnaHeC1Nwb015xp8bknZv5rIfri9xTOcMuaVgvabfIRA7PSZVuZIQ==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@types/node": "*"
       }
@@ -720,6 +735,7 @@
       "resolved": "https://registry.npmjs.org/@types/serve-static/-/serve-static-2.2.0.tgz",
       "integrity": "sha512-8mam4H1NHLtu7nmtalF7eyBH14QyOASmcxHhSfEoRyr0nP/YdoesEtU+uSRvMe96TW/HPTtkoKqQLl53N7UXMQ==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@types/http-errors": "*",
         "@types/node": "*"
@@ -2461,7 +2477,6 @@
       "resolved": "https://registry.npmjs.org/koa/-/koa-3.2.0.tgz",
       "integrity": "sha512-TrM4/tnNY7uJ1aW55sIIa+dqBvc4V14WRIAlGcWat9wV5pRS9Wr5Zk2ZTjQP1jtfIHDoHiSbPuV08P0fUZo2pg==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "accepts": "^1.3.8",
         "content-disposition": "~1.0.1",
@@ -3211,7 +3226,6 @@
         }
       ],
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "nanoid": "^3.3.11",
         "picocolors": "^1.1.1",
@@ -3351,7 +3365,6 @@
       "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
       "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
       "license": "Apache-2.0",
-      "peer": true,
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
@@ -3865,7 +3878,6 @@
       "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.4.tgz",
       "integrity": "sha512-QP88BAKvMam/3NxH6vj2o21R6MjxZUAd6nlwAS/pnGvN9IVLocLHxGYIzFhg6fUQ+5th6P4dv4eW9jX3DSIj7A==",
       "license": "MIT",
-      "peer": true,
       "engines": {
         "node": ">=12"
       },
@@ -3980,7 +3992,6 @@
       "resolved": "https://registry.npmjs.org/typescript/-/typescript-6.0.2.tgz",
       "integrity": "sha512-bGdAIrZ0wiGDo5l8c++HWtbaNCWTS4UTv7RaTH/ThVIgjkveJt83m74bBHMJkuCbslY8ixgLBVZJIOiQlQTjfQ==",
       "license": "Apache-2.0",
-      "peer": true,
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
@@ -4006,7 +4017,8 @@
       "version": "7.18.2",
       "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.18.2.tgz",
       "integrity": "sha512-AsuCzffGHJybSaRrmr5eHr81mwJU3kjw6M+uprWvCXiNeN9SOGwQ3Jn8jb8m3Z6izVgknn1R0FTCEAP2QrLY/w==",
-      "license": "MIT"
+      "license": "MIT",
+      "peer": true
     },
     "node_modules/universalify": {
       "version": "2.0.1",

From ebbba808329a266a59bf3a10631f4cbb92b3cbe8 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 7 Apr 2026 21:22:16 +0000
Subject: [PATCH 3/3] feat: implement pet store routes with context dummy data
 and response builder

Agent-Logs-Url: https://github.com/counterfact/example-petstore/sessions/efc70a58-8d38-45cc-b6f2-0ade49cccdfa

Co-authored-by: pmcelhaney <51504+pmcelhaney@users.noreply.github.com>
---
 api/routes/_.context.ts               |  2 +-
 api/routes/pet.ts                     |  8 ++++----
 api/routes/pet/findByStatus.ts        |  2 +-
 api/routes/pet/findByTags.ts          |  2 +-
 api/routes/pet/{petId}.ts             | 14 +++++++-------
 api/routes/pet/{petId}/uploadImage.ts | 15 ++++++---------
 api/routes/store/inventory.ts         |  2 +-
 api/routes/store/order.ts             |  2 +-
 api/routes/store/order/{orderId}.ts   |  8 ++++----
 api/routes/user.ts                    |  2 +-
 api/routes/user/createWithList.ts     |  3 ++-
 api/routes/user/login.ts              |  4 ++--
 api/routes/user/logout.ts             |  4 ++--
 api/routes/user/{username}.ts         | 12 ++++++------
 14 files changed, 39 insertions(+), 41 deletions(-)

diff --git a/api/routes/_.context.ts b/api/routes/_.context.ts
index 8edd3d4..2bbd799 100644
--- a/api/routes/_.context.ts
+++ b/api/routes/_.context.ts
@@ -119,7 +119,7 @@ export class Context {
     return true;
   }
 
-  findPetsByStatus(status: string): Pet[] {
+  findPetsByStatus(status: "available" | "pending" | "sold"): Pet[] {
     return this.pets.filter((p) => p.status === status);
   }
 
diff --git a/api/routes/pet.ts b/api/routes/pet.ts
index c026489..8da9bd8 100644
--- a/api/routes/pet.ts
+++ b/api/routes/pet.ts
@@ -3,16 +3,16 @@ import type { addPet } from "../types/paths/pet.types.js";
 
 export const PUT: updatePet = ($) => {
   if (!$.body.id) {
-    return { status: 400 };
+    return $.response[400];
   }
   const updated = $.context.updatePet($.body);
   if (!updated) {
-    return { status: 404 };
+    return $.response[404];
   }
-  return { status: 200, body: updated };
+  return $.response[200].json(updated);
 };
 
 export const POST: addPet = ($) => {
   const pet = $.context.addPet($.body);
-  return { status: 200, body: pet };
+  return $.response[200].json(pet);
 };
diff --git a/api/routes/pet/findByStatus.ts b/api/routes/pet/findByStatus.ts
index 3468dc9..2a4567e 100644
--- a/api/routes/pet/findByStatus.ts
+++ b/api/routes/pet/findByStatus.ts
@@ -2,5 +2,5 @@ import type { findPetsByStatus } from "../../types/paths/pet/findByStatus.types.
 
 export const GET: findPetsByStatus = ($) => {
   const pets = $.context.findPetsByStatus($.query.status);
-  return { status: 200, body: pets };
+  return $.response[200].json(pets);
 };
diff --git a/api/routes/pet/findByTags.ts b/api/routes/pet/findByTags.ts
index 61b3068..9db1b5c 100644
--- a/api/routes/pet/findByTags.ts
+++ b/api/routes/pet/findByTags.ts
@@ -2,5 +2,5 @@ import type { findPetsByTags } from "../../types/paths/pet/findByTags.types.js";
 
 export const GET: findPetsByTags = ($) => {
   const pets = $.context.findPetsByTags($.query.tags);
-  return { status: 200, body: pets };
+  return $.response[200].json(pets);
 };
diff --git a/api/routes/pet/{petId}.ts b/api/routes/pet/{petId}.ts
index ae0e6fe..1fc4187 100644
--- a/api/routes/pet/{petId}.ts
+++ b/api/routes/pet/{petId}.ts
@@ -5,15 +5,15 @@ import type { deletePet } from "../../types/paths/pet/{petId}.types.js";
 export const GET: getPetById = ($) => {
   const pet = $.context.getPetById($.path.petId);
   if (!pet) {
-    return { status: 404 };
+    return $.response[404];
   }
-  return { status: 200, body: pet };
+  return $.response[200].json(pet);
 };
 
 export const POST: updatePetWithForm = ($) => {
   const pet = $.context.getPetById($.path.petId);
   if (!pet) {
-    return { status: 400 };
+    return $.response[400];
   }
   const updated = $.context.updatePet({
     ...pet,
@@ -23,15 +23,15 @@ export const POST: updatePetWithForm = ($) => {
       : {}),
   });
   if (!updated) {
-    return { status: 400 };
+    return $.response[400];
   }
-  return { status: 200, body: updated };
+  return $.response[200].json(updated);
 };
 
 export const DELETE: deletePet = ($) => {
   const deleted = $.context.deletePet($.path.petId);
   if (!deleted) {
-    return { status: 400 };
+    return $.response[400];
   }
-  return { status: 200 };
+  return $.response[200];
 };
diff --git a/api/routes/pet/{petId}/uploadImage.ts b/api/routes/pet/{petId}/uploadImage.ts
index c06d1d8..fd5de1c 100644
--- a/api/routes/pet/{petId}/uploadImage.ts
+++ b/api/routes/pet/{petId}/uploadImage.ts
@@ -3,14 +3,11 @@ import type { uploadFile } from "../../../types/paths/pet/{petId}/uploadImage.ty
 export const POST: uploadFile = ($) => {
   const pet = $.context.getPetById($.path.petId);
   if (!pet) {
-    return { status: 404 };
+    return $.response[404];
   }
-  return {
-    status: 200,
-    body: {
-      code: 200,
-      type: "unknown",
-      message: `File uploaded for pet ${$.path.petId}`,
-    },
-  };
+  return $.response[200].json({
+    code: 200,
+    type: "unknown",
+    message: `File uploaded for pet ${$.path.petId}`,
+  });
 };
diff --git a/api/routes/store/inventory.ts b/api/routes/store/inventory.ts
index d34d37b..24e74bb 100644
--- a/api/routes/store/inventory.ts
+++ b/api/routes/store/inventory.ts
@@ -2,5 +2,5 @@ import type { getInventory } from "../../types/paths/store/inventory.types.js";
 
 export const GET: getInventory = ($) => {
   const inventory = $.context.getInventory();
-  return { status: 200, body: inventory };
+  return $.response[200].json(inventory);
 };
diff --git a/api/routes/store/order.ts b/api/routes/store/order.ts
index 0da7b81..2388046 100644
--- a/api/routes/store/order.ts
+++ b/api/routes/store/order.ts
@@ -2,5 +2,5 @@ import type { placeOrder } from "../../types/paths/store/order.types.js";
 
 export const POST: placeOrder = ($) => {
   const order = $.context.placeOrder($.body);
-  return { status: 200, body: order };
+  return $.response[200].json(order);
 };
diff --git a/api/routes/store/order/{orderId}.ts b/api/routes/store/order/{orderId}.ts
index 8de2d21..660f051 100644
--- a/api/routes/store/order/{orderId}.ts
+++ b/api/routes/store/order/{orderId}.ts
@@ -4,15 +4,15 @@ import type { deleteOrder } from "../../../types/paths/store/order/{orderId}.typ
 export const GET: getOrderById = ($) => {
   const order = $.context.getOrderById($.path.orderId);
   if (!order) {
-    return { status: 404 };
+    return $.response[404];
   }
-  return { status: 200, body: order };
+  return $.response[200].json(order);
 };
 
 export const DELETE: deleteOrder = ($) => {
   const deleted = $.context.deleteOrder($.path.orderId);
   if (!deleted) {
-    return { status: 404 };
+    return $.response[404];
   }
-  return { status: 200 };
+  return $.response[200];
 };
diff --git a/api/routes/user.ts b/api/routes/user.ts
index a030408..c1efc68 100644
--- a/api/routes/user.ts
+++ b/api/routes/user.ts
@@ -2,5 +2,5 @@ import type { createUser } from "../types/paths/user.types.js";
 
 export const POST: createUser = ($) => {
   const user = $.context.addUser($.body);
-  return { status: 200, body: user };
+  return $.response[200].json(user);
 };
diff --git a/api/routes/user/createWithList.ts b/api/routes/user/createWithList.ts
index 12d103f..0c30fdc 100644
--- a/api/routes/user/createWithList.ts
+++ b/api/routes/user/createWithList.ts
@@ -2,5 +2,6 @@ import type { createUsersWithListInput } from "../../types/paths/user/createWith
 
 export const POST: createUsersWithListInput = ($) => {
   const users = $.body.map((user) => $.context.addUser(user));
-  return { status: 200, body: users[0] };
+  // The OpenAPI spec returns a single User on 200; return the first created user
+  return $.response[200].json(users[0]);
 };
diff --git a/api/routes/user/login.ts b/api/routes/user/login.ts
index 1906fa9..fc86e7a 100644
--- a/api/routes/user/login.ts
+++ b/api/routes/user/login.ts
@@ -5,7 +5,7 @@ export const GET: loginUser = ($) => {
     (u) => u.username === $.query.username && u.password === $.query.password,
   );
   if (!user) {
-    return { status: 400 };
+    return $.response[400];
   }
-  return { status: 200, body: `Logged in as ${user.username}` };
+  return $.response[200].json(`Logged in as ${user.username}`);
 };
diff --git a/api/routes/user/logout.ts b/api/routes/user/logout.ts
index bd883b4..5ad2b80 100644
--- a/api/routes/user/logout.ts
+++ b/api/routes/user/logout.ts
@@ -1,5 +1,5 @@
 import type { logoutUser } from "../../types/paths/user/logout.types.js";
 
-export const GET: logoutUser = () => {
-  return { status: 200 };
+export const GET: logoutUser = ($) => {
+  return $.response[200];
 };
diff --git a/api/routes/user/{username}.ts b/api/routes/user/{username}.ts
index 841e58f..5e7f655 100644
--- a/api/routes/user/{username}.ts
+++ b/api/routes/user/{username}.ts
@@ -5,23 +5,23 @@ import type { deleteUser } from "../../types/paths/user/{username}.types.js";
 export const GET: getUserByName = ($) => {
   const user = $.context.getUserByUsername($.path.username);
   if (!user) {
-    return { status: 404 };
+    return $.response[404];
   }
-  return { status: 200, body: user };
+  return $.response[200].json(user);
 };
 
 export const PUT: updateUser = ($) => {
   const updated = $.context.updateUser($.path.username, $.body);
   if (!updated) {
-    return { status: 404 };
+    return $.response[404];
   }
-  return { status: 200 };
+  return $.response[200];
 };
 
 export const DELETE: deleteUser = ($) => {
   const deleted = $.context.deleteUser($.path.username);
   if (!deleted) {
-    return { status: 404 };
+    return $.response[404];
   }
-  return { status: 200 };
+  return $.response[200];
 };