diff --git a/src/index.ts b/src/index.ts
index 8b8e5b4..8e950e5 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -20,6 +20,7 @@ export { CUSTOM_MAP_ID, DEFAULT_MAP_ID } from './lib/constants.js'
 
 export type {
 	MapInfo,
+	MapInfoResponse,
 	MapShareState,
 	MapShareStateUpdate,
 	DownloadStateUpdate,
diff --git a/src/routes/maps.ts b/src/routes/maps.ts
index 5817616..08f0f0e 100644
--- a/src/routes/maps.ts
+++ b/src/routes/maps.ts
@@ -10,6 +10,7 @@ import {
 } from '../lib/constants.js'
 import { errors } from '../lib/errors.js'
 import { addTrailingSlash, noop } from '../lib/utils.js'
+import type { MapInfoResponse } from '../types.js'
 
 type MapRequest = IRequestStrict & {
 	params: {
@@ -27,14 +28,17 @@ export function MapsRouter({ base = '/' }, ctx: Context) {
 
 	const router = IttyRouter<IRequestStrict>({ base })
 
-	router.get<MapRequest>(`/:mapId/info`, async (request) => {
-		const info = await ctx.getMapInfo(request.params.mapId)
-		return {
-			created: info.mapCreatedAt,
-			size: info.estimatedSizeBytes,
-			name: info.mapName,
-		}
-	})
+	router.get<MapRequest>(
+		`/:mapId/info`,
+		async (request): Promise<MapInfoResponse> => {
+			const info = await ctx.getMapInfo(request.params.mapId)
+			return {
+				created: info.mapCreatedAt,
+				size: info.estimatedSizeBytes,
+				name: info.mapName,
+			}
+		},
+	)
 
 	const uploadHandler: RequestHandler<MapRequest> = async (request) => {
 		const writable = ctx.createMapWritableStream(request.params.mapId)
diff --git a/src/types.ts b/src/types.ts
index a91f00e..020670b 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -105,6 +105,16 @@ const MapInfo = T.Object({
 	}),
 })
 
+export const MapInfoResponse = T.Object({
+	created: T.Number({
+		description: 'Timestamp (ms since epoch) when the map was created',
+	}),
+	size: T.Number({ description: 'Estimated size of the map data in bytes' }),
+	name: T.String({ description: 'The name of the map' }),
+})
+
+export type MapInfoResponse = Static<typeof MapInfoResponse>
+
 const MapShareBase = T.Intersect([
 	T.Object({
 		receiverDeviceId: T.String({
@@ -126,6 +136,9 @@ export type MapShareState = DistributiveIntersection<
 	Static<typeof MapShareStateUpdate>
 >
 
+/**
+ * @deprecated We don't yet return this type from any API, and it may be removed in a future release. Use MapInfoResponse instead.
+ */
 export type MapInfo = Static<typeof MapInfo>
 
 export type FetchContext = {
diff --git a/test/maps.test.ts b/test/maps.test.ts
index 9e77397..1eaad2e 100644
--- a/test/maps.test.ts
+++ b/test/maps.test.ts
@@ -6,8 +6,10 @@ import { setTimeout as delay } from 'node:timers/promises'
 import { fileURLToPath } from 'node:url'
 
 import { Reader } from 'styled-map-package'
+import Value from 'typebox/value'
 import { describe, it, expect, vi } from 'vitest'
 
+import { MapInfoResponse } from '../src/types.js'
 import {
 	DEMOTILES_Z2,
 	goOffline,
@@ -60,6 +62,7 @@ describe('Maps API', () => {
 			const response = await fetch(`${localBaseUrl}/maps/custom/info`)
 			expect(response.status).toBe(200)
 			const info = await response.json()
+			expect(Value.Check(MapInfoResponse, info)).toBe(true)
 			expect(info).toHaveProperty('created')
 			expect(info).toHaveProperty('size')
 			expect(info).toHaveProperty('name')
@@ -73,6 +76,7 @@ describe('Maps API', () => {
 			const response = await fetch(`${localBaseUrl}/maps/fallback/info`)
 			expect(response.status).toBe(200)
 			const info = await response.json()
+			expect(Value.Check(MapInfoResponse, info)).toBe(true)
 			expect(info).toHaveProperty('created')
 			expect(info).toHaveProperty('size')
 			expect(info).toHaveProperty('name')
@@ -580,8 +584,9 @@ describe('Map Upload', () => {
 		// Mock fs.createWriteStream to return a writable that errors on write,
 		// simulating a disk-full scenario
 		const originalCreateWriteStream = fs.createWriteStream
-		const spy = vi.spyOn(fs, 'createWriteStream').mockImplementation(
-			(...args: any[]) => {
+		const spy = vi
+			.spyOn(fs, 'createWriteStream')
+			.mockImplementation((...args: any[]) => {
 				const stream = originalCreateWriteStream.apply(fs, args as any)
 				stream._write = (
 					_chunk: any,
@@ -591,8 +596,7 @@ describe('Map Upload', () => {
 					callback(new Error('ENOSPC: no space left on device'))
 				}
 				return stream
-			},
-		)
+			})
 		t.onTestFinished(() => spy.mockRestore())
 
 		const fileBuffer = fs.readFileSync(OSM_BRIGHT_Z6)
@@ -627,17 +631,15 @@ describe('Map Upload', () => {
 		// Mock fs.createWriteStream to return a writable that writes successfully
 		// but errors on close (_final), simulating a flush/sync failure
 		const originalCreateWriteStream = fs.createWriteStream
-		const spy = vi.spyOn(fs, 'createWriteStream').mockImplementation(
-			(...args: any[]) => {
+		const spy = vi
+			.spyOn(fs, 'createWriteStream')
+			.mockImplementation((...args: any[]) => {
 				const stream = originalCreateWriteStream.apply(fs, args as any)
-				stream._final = (
-					callback: (error?: Error | null) => void,
-				) => {
+				stream._final = (callback: (error?: Error | null) => void) => {
 					callback(new Error('EIO: i/o error'))
 				}
 				return stream
-			},
-		)
+			})
 		t.onTestFinished(() => spy.mockRestore())
 
 		const fileBuffer = fs.readFileSync(OSM_BRIGHT_Z6)