diff --git a/bun.lockb b/bun.lockb
index 557d79c..9ef2123 100755
Binary files a/bun.lockb and b/bun.lockb differ
diff --git a/lib/db/db-client.ts b/lib/db/db-client.ts
index e525e65..ab063c9 100644
--- a/lib/db/db-client.ts
+++ b/lib/db/db-client.ts
@@ -2,7 +2,12 @@ import { createStore, type StoreApi } from "zustand/vanilla"
 import { immer } from "zustand/middleware/immer"
 import { hoist, type HoistedStoreApi } from "zustand-hoist"
 
-import { databaseSchema, type DatabaseSchema, type Thing } from "./schema.ts"
+import {
+  databaseSchema,
+  type DatabaseSchema,
+  type Payment,
+  type Thing,
+} from "./schema.ts"
 import { combine } from "zustand/middleware"
 
 export const createDatabase = () => {
@@ -21,4 +26,31 @@ const initializer = combine(databaseSchema.parse({}), (set) => ({
       idCounter: state.idCounter + 1,
     }))
   },
+  addPayment: (
+    payment: Omit<Payment, "payment_id" | "created_at" | "status">,
+  ) => {
+    set((state) => ({
+      payments: [
+        ...state.payments,
+        {
+          ...payment,
+          payment_id: `pay_${state.idCounter}`,
+          status: "pending" as const,
+          created_at: new Date().toISOString(),
+        },
+      ],
+      idCounter: state.idCounter + 1,
+    }))
+  },
+  updatePaymentStatus: (
+    payment_id: string,
+    status: Payment["status"],
+    sent_at?: string,
+  ) => {
+    set((state) => ({
+      payments: state.payments.map((p) =>
+        p.payment_id === payment_id ? { ...p, status, sent_at } : p,
+      ),
+    }))
+  },
 }))
diff --git a/lib/db/schema.ts b/lib/db/schema.ts
index 8377516..38ab9c6 100644
--- a/lib/db/schema.ts
+++ b/lib/db/schema.ts
@@ -9,8 +9,20 @@ export const thingSchema = z.object({
 })
 export type Thing = z.infer<typeof thingSchema>
 
+export const paymentSchema = z.object({
+  payment_id: z.string(),
+  recipient_email: z.string().email(),
+  amount_usd: z.number().positive(),
+  note: z.string().optional(),
+  status: z.enum(["pending", "sent", "failed"]).default("pending"),
+  created_at: z.string(),
+  sent_at: z.string().optional(),
+})
+export type Payment = z.infer<typeof paymentSchema>
+
 export const databaseSchema = z.object({
   idCounter: z.number().default(0),
   things: z.array(thingSchema).default([]),
+  payments: z.array(paymentSchema).default([]),
 })
 export type DatabaseSchema = z.infer<typeof databaseSchema>
diff --git a/package.json b/package.json
index d03438f..8caed8f 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
     "@types/bun": "latest",
     "@types/react": "18.3.4",
     "next": "^14.2.5",
-    "redaxios": "^0.5.1"
+    "ky": "^1.8.1"
   },
   "peerDependencies": {
     "typescript": "^5.0.0"
diff --git a/routes/payments/list.ts b/routes/payments/list.ts
new file mode 100644
index 0000000..7badd6a
--- /dev/null
+++ b/routes/payments/list.ts
@@ -0,0 +1,43 @@
+import { withRouteSpec } from "lib/middleware/with-winter-spec"
+import { z } from "zod"
+
+const paymentResponseSchema = z.object({
+  payment_id: z.string(),
+  recipient_email: z.string(),
+  amount_usd: z.number(),
+  note: z.string().optional(),
+  status: z.enum(["pending", "sent", "failed"]),
+  created_at: z.string(),
+  sent_at: z.string().optional(),
+})
+
+export default withRouteSpec({
+  methods: ["GET"],
+  queryParams: z.object({
+    recipient_email: z.string().email().optional(),
+    status: z.enum(["pending", "sent", "failed"]).optional(),
+  }),
+  jsonResponse: z.object({
+    ok: z.boolean(),
+    payments: z.array(paymentResponseSchema),
+  }),
+})(async (req, ctx) => {
+  const url = new URL(req.url)
+  const recipient_email = url.searchParams.get("recipient_email") ?? undefined
+  const status = url.searchParams.get("status") as
+    | "pending"
+    | "sent"
+    | "failed"
+    | undefined
+
+  let payments = ctx.db.getState().payments
+
+  if (recipient_email) {
+    payments = payments.filter((p) => p.recipient_email === recipient_email)
+  }
+  if (status) {
+    payments = payments.filter((p) => p.status === status)
+  }
+
+  return ctx.json({ ok: true, payments })
+})
diff --git a/routes/payments/send.ts b/routes/payments/send.ts
new file mode 100644
index 0000000..e803b70
--- /dev/null
+++ b/routes/payments/send.ts
@@ -0,0 +1,43 @@
+import { withRouteSpec } from "lib/middleware/with-winter-spec"
+import { z } from "zod"
+
+export default withRouteSpec({
+  methods: ["POST"],
+  jsonBody: z.object({
+    recipient_email: z.string().email(),
+    amount_usd: z.number().positive(),
+    note: z.string().optional(),
+  }),
+  jsonResponse: z.object({
+    ok: z.boolean(),
+    payment: z.object({
+      payment_id: z.string(),
+      recipient_email: z.string(),
+      amount_usd: z.number(),
+      note: z.string().optional(),
+      status: z.enum(["pending", "sent", "failed"]),
+      created_at: z.string(),
+      sent_at: z.string().optional(),
+    }),
+  }),
+})(async (req, ctx) => {
+  const { recipient_email, amount_usd, note } = await req.json()
+
+  ctx.db.addPayment({ recipient_email, amount_usd, note })
+
+  const payments = ctx.db.getState().payments
+  const payment = payments[payments.length - 1]
+
+  // Simulate async send: immediately mark as sent in fake mode
+  ctx.db.updatePaymentStatus(
+    payment.payment_id,
+    "sent",
+    new Date().toISOString(),
+  )
+
+  const sent = ctx.db
+    .getState()
+    .payments.find((p) => p.payment_id === payment.payment_id)!
+
+  return ctx.json({ ok: true, payment: sent })
+})
diff --git a/tests/fixtures/get-test-server.ts b/tests/fixtures/get-test-server.ts
index 7063c41..ffaf284 100644
--- a/tests/fixtures/get-test-server.ts
+++ b/tests/fixtures/get-test-server.ts
@@ -1,12 +1,11 @@
 import { afterEach } from "bun:test"
-import { tmpdir } from "node:os"
-import defaultAxios from "redaxios"
+import ky from "ky"
 import { startServer } from "./start-server"
 
 interface TestFixture {
   url: string
   server: any
-  axios: typeof defaultAxios
+  ky: typeof ky
 }
 
 export const getTestServer = async (): Promise<TestFixture> => {
@@ -20,18 +19,17 @@ export const getTestServer = async (): Promise<TestFixture> => {
   })
 
   const url = `http://127.0.0.1:${port}`
-  const axios = defaultAxios.create({
-    baseURL: url,
+  const kyInstance = ky.create({
+    prefixUrl: url,
   })
 
   afterEach(async () => {
     await server.stop()
-    // Here you might want to add logic to drop the test database
   })
 
   return {
     url,
     server,
-    axios,
+    ky: kyInstance,
   }
 }
diff --git a/tests/routes/health.test.ts b/tests/routes/health.test.ts
index 935db09..e97fcc3 100644
--- a/tests/routes/health.test.ts
+++ b/tests/routes/health.test.ts
@@ -2,8 +2,7 @@ import { it, expect } from "bun:test"
 import { getTestServer } from "tests/fixtures/get-test-server"
 
 it("GET /health should return ok", async () => {
-  const { axios } = await getTestServer()
-  const res = await axios.get("/health")
-  expect(res.status).toBe(200)
-  expect(res.data).toEqual({ ok: true })
+  const { ky } = await getTestServer()
+  const data = await ky.get("health").json()
+  expect(data).toEqual({ ok: true })
 })
diff --git a/tests/routes/payments/send.test.ts b/tests/routes/payments/send.test.ts
new file mode 100644
index 0000000..bb93a6d
--- /dev/null
+++ b/tests/routes/payments/send.test.ts
@@ -0,0 +1,45 @@
+import { getTestServer } from "tests/fixtures/get-test-server"
+import { test, expect } from "bun:test"
+
+test("send a payment and verify it appears in list", async () => {
+  const { ky } = await getTestServer()
+
+  const sendData = await ky
+    .post("payments/send", {
+      json: {
+        recipient_email: "alice@example.com",
+        amount_usd: 25,
+        note: "Bounty reward",
+      },
+    })
+    .json<any>()
+
+  expect(sendData.ok).toBe(true)
+  expect(sendData.payment.recipient_email).toBe("alice@example.com")
+  expect(sendData.payment.amount_usd).toBe(25)
+  expect(sendData.payment.status).toBe("sent")
+  expect(sendData.payment.sent_at).toBeDefined()
+
+  const listData = await ky.get("payments/list").json<any>()
+  expect(listData.payments).toHaveLength(1)
+  expect(listData.payments[0].payment_id).toBe(sendData.payment.payment_id)
+})
+
+test("filter payments by recipient_email", async () => {
+  const { ky } = await getTestServer()
+
+  await ky.post("payments/send", {
+    json: { recipient_email: "alice@example.com", amount_usd: 25 },
+  })
+  await ky.post("payments/send", {
+    json: { recipient_email: "bob@example.com", amount_usd: 50 },
+  })
+
+  const data = await ky
+    .get("payments/list", {
+      searchParams: { recipient_email: "alice@example.com" },
+    })
+    .json<any>()
+  expect(data.payments).toHaveLength(1)
+  expect(data.payments[0].recipient_email).toBe("alice@example.com")
+})
diff --git a/tests/routes/things/create.test.ts b/tests/routes/things/create.test.ts
index 4ea7077..66f9a5d 100644
--- a/tests/routes/things/create.test.ts
+++ b/tests/routes/things/create.test.ts
@@ -2,14 +2,13 @@ import { getTestServer } from "tests/fixtures/get-test-server"
 import { test, expect } from "bun:test"
 
 test("create a thing", async () => {
-  const { axios } = await getTestServer()
+  const { ky } = await getTestServer()
 
-  axios.post("/things/create", {
-    name: "Thing1",
-    description: "Thing1 Description",
+  await ky.post("things/create", {
+    json: { name: "Thing1", description: "Thing1 Description" },
   })
 
-  const { data } = await axios.get("/things/list")
+  const data = await ky.get("things/list").json<any>()
 
   expect(data.things).toHaveLength(1)
 })