diff --git a/src/ap/blog.ts b/src/ap/blog.ts
new file mode 100644
index 0000000..be050c0
--- /dev/null
+++ b/src/ap/blog.ts
@@ -0,0 +1,20 @@
+import { BASE_URL } from "~/config.js";
+import { Blog } from "~/db/entities/blog.js";
+
+/** Transforms the given Blog into an ActivityPub Person. It is the caller's responsibility to ensure the blog is local. */
+export function blogToActivityPub(blog: Blog) {
+	return {
+		"@context": "https://www.w3.org/ns/activitystreams",
+		type: "Person",
+		id: `${BASE_URL}/blogs/${blog.username}`,
+		inbox: `${BASE_URL}/blogs/${blog.username}/inbox`,
+		outbox: `${BASE_URL}/blogs/${blog.username}/outbox`,
+		name: blog.username,
+		preferredUsername: blog.username,
+		publicKey: {
+			id: `${BASE_URL}/blogs/${blog.username}#main-key`,
+			owner: `${BASE_URL}/blogs/${blog.username}`,
+			publicKeyPem: blog.publicKey,
+		},
+	};
+}
diff --git a/src/config.ts b/src/config.ts
index eabcbd4..02337b1 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 4b50c93..0160359 100644
--- a/src/routes/well-known/auth-node.ts
+++ b/src/routes/well-known/auth-node.ts
@@ -1,45 +1,9 @@
 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);
 	},
 };