diff --git a/src/config.ts b/src/config.ts
index 02337b1..eabcbd4 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -11,8 +11,8 @@ export const DATABASE_PASS = process.env.DATABASE_PASS || "postgres";
 export const DATABASE_NAME = process.env.DATABASE_NAME || "postgres";
 
 export const HTTPS = process.env.HTTPS === "true";
-export const DOMAIN = process.env.DOMAIN;
+export const DOMAIN = process.env.DOMAIN || "";
 
-if (!DOMAIN) throw "$DOMAIN is empty";
+if (DOMAIN === "") throw "$DOMAIN is empty";
 
 export const BASE_URL = `${HTTPS ? "https" : "http"}://${DOMAIN}`;
diff --git a/src/routes/well-known/auth-node.ts b/src/routes/well-known/auth-node.ts
index 0160359..4b50c93 100644
--- a/src/routes/well-known/auth-node.ts
+++ b/src/routes/well-known/auth-node.ts
@@ -1,9 +1,45 @@
 import { RouteOptions } from "fastify";
 
+import { BASE_URL, DOMAIN } from "~/config.js";
+import { Account } from "~/db/entities/account.js";
+import LongmontDataSource from "~/db/index.js";
+
+interface AuthNode {
+	api_base: string;
+	name_suffix: string;
+	software: {
+		name: string;
+		version: string;
+		source: string;
+	};
+	features: string[];
+	registrations: "open" | "approval" | "closed";
+	usage: {
+		users: number | null;
+	};
+}
+
 const route: RouteOptions = {
 	method: "GET",
 	url: "/.well-known/longmont/auth-node",
 	handler: async (_, res) => {
+		const userCount = await LongmontDataSource.getRepository(Account).count();
+
+		res.send({
+			api_base: BASE_URL,
+			name_suffix: DOMAIN,
+			software: {
+				name: "authsrv",
+				version: "0.1.0-dev",
+				source: "https://github.com/longmont-chat",
+			},
+			features: [],
+			registrations: "open",
+			usage: {
+				users: userCount,
+			},
+		} satisfies AuthNode);
+
 		res.status(204);
 	},
 };