diff --git a/assets/openapi.json b/assets/openapi.json
index 23da8478a..c7d9c6f0b 100644
Binary files a/assets/openapi.json and b/assets/openapi.json differ
diff --git a/assets/schemas.json b/assets/schemas.json
index 97ea6b1b5..8879a307d 100644
Binary files a/assets/schemas.json and b/assets/schemas.json differ
diff --git a/src/api/routes_toplevel/%2Ewell-known/spacebar/client.ts b/src/api/routes_toplevel/%2Ewell-known/spacebar/client.ts
index daed64f61..d210709a9 100644
--- a/src/api/routes_toplevel/%2Ewell-known/spacebar/client.ts
+++ b/src/api/routes_toplevel/%2Ewell-known/spacebar/client.ts
@@ -19,6 +19,7 @@
 import { Router, Response, Request } from "express";
 import { route } from "@spacebar/api/middlewares";
 import { Config } from "@spacebar/util";
+import { SpacebarWellKnownClientResponse } from "@spacebar/schemas/api/spacebar/WellKnown";
 
 const router = Router({ mergeParams: true });
 
@@ -27,21 +28,26 @@ router.get(
     route({
         spacebarOnly: true,
         authentication: "never",
+        responses: {
+            200: {
+                body: "SpacebarWellKnownClientResponse",
+            },
+        },
     }),
     (req: Request, res: Response) => {
         res.json({
             api: {
-                baseUrl: Config.get().api.endpointPublic?.split("/api/")[0],
+                baseUrl: Config.get().api.endpointPublic!.split("/api/")[0],
                 apiVersions: {
                     default: Config.get().api.defaultVersion,
                     active: Config.get().api.activeVersions,
                 },
             },
             cdn: {
-                baseUrl: Config.get().cdn.endpointPublic,
+                baseUrl: Config.get().cdn.endpointPublic!,
             },
             gateway: {
-                baseUrl: Config.get().gateway.endpointPublic,
+                baseUrl: Config.get().gateway.endpointPublic!,
                 encoding: ["etf", "json"],
                 compression: ["zstd-stream", "zlib-stream", null],
             },
@@ -49,9 +55,9 @@ router.get(
                 Config.get().admin.endpointPublic === null
                     ? undefined
                     : {
-                          baseUrl: Config.get().admin.endpointPublic,
+                          baseUrl: Config.get().admin.endpointPublic!,
                       },
-        });
+        } satisfies SpacebarWellKnownClientResponse);
     },
 );
 
diff --git a/src/api/routes_toplevel/%2Ewell-known/spacebar/index.ts b/src/api/routes_toplevel/%2Ewell-known/spacebar/index.ts
index 1a5961362..472571e5d 100644
--- a/src/api/routes_toplevel/%2Ewell-known/spacebar/index.ts
+++ b/src/api/routes_toplevel/%2Ewell-known/spacebar/index.ts
@@ -19,6 +19,7 @@
 import { Router, Response, Request } from "express";
 import { route } from "@spacebar/api/middlewares";
 import { Config } from "@spacebar/util";
+import { SpacebarWellKnownLegacyResponse } from "@spacebar/schemas/api/spacebar/WellKnown";
 
 const router = Router({ mergeParams: true });
 
@@ -28,11 +29,16 @@ router.get(
         spacebarOnly: true,
         authentication: "never",
         deprecated: true,
+        responses: {
+            200: {
+                body: "SpacebarWellKnownLegacyResponse",
+            },
+        },
     }),
     (req: Request, res: Response) => {
         res.json({
             api: (Config.get().api.endpointPublic + "/api/").replace("//api/", "/api/"),
-        });
+        } satisfies SpacebarWellKnownLegacyResponse);
     },
 );
 
diff --git a/src/schemas/api/spacebar/WellKnown.ts b/src/schemas/api/spacebar/WellKnown.ts
new file mode 100644
index 000000000..cc21f5d8f
--- /dev/null
+++ b/src/schemas/api/spacebar/WellKnown.ts
@@ -0,0 +1,42 @@
+/*
+	Spacebar: A FOSS re-implementation and extension of the Discord.com backend.
+	Copyright (C) 2026 Spacebar and Spacebar Contributors
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Affero General Public License as published
+	by the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Affero General Public License for more details.
+
+	You should have received a copy of the GNU Affero General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+export interface SpacebarWellKnownLegacyResponse {
+    api: string;
+}
+
+export interface SpacebarWellKnownClientResponse {
+    api: {
+        baseUrl: string;
+        apiVersions: {
+            default: string;
+            active: string[];
+        };
+    };
+    cdn: {
+        baseUrl: string;
+    };
+    gateway: {
+        baseUrl: string;
+        encoding: string[];
+        compression: (string | null)[];
+    };
+    admin?: {
+        baseUrl: string;
+    };
+}