diff --git a/d2m/actions/register-user.js b/d2m/actions/register-user.js
index 325a3d0..a23147d 100644
--- a/d2m/actions/register-user.js
+++ b/d2m/actions/register-user.js
@@ -1,20 +1,42 @@
 // @ts-check
 
-const reg = require("../../matrix/read-registration.js")
-const fetch = require("node-fetch").default
+const assert = require("assert")
 
-fetch("https://matrix.cadence.moe/_matrix/client/v3/register", {
-	method: "POST",
-	body: JSON.stringify({
+const passthrough = require("../../passthrough")
+const { discord, sync, db } = passthrough
+/** @type {import("../../matrix/mreq")} */
+const mreq = sync.require("../../matrix/mreq")
+/** @type {import("../../matrix/file")} */
+const file = sync.require("../../matrix/file")
+
+async function registerUser(username) {
+	assert.ok(username.startsWith("_ooye_"))
+	/** @type {import("../../types").R.Registered} */
+	const res = await mreq.mreq("POST", "/client/v3/register", {
 		type: "m.login.application_service",
-		username: "_ooye_example"
-	}),
-	headers: {
-		Authorization: `Bearer ${reg.as_token}`
-	}
-}).then(res => res.text()).then(text => {
-	// {"user_id":"@_ooye_example:cadence.moe","home_server":"cadence.moe","access_token":"XXX","device_id":"XXX"}
-	console.log(text)
-}).catch(err => {
-	console.log(err)
-})
+		username
+	})
+	return res
+}
+
+/**
+ * A sim is an account that is being simulated by the bridge to copy events from the other side.
+ * @param {import("discord-api-types/v10").APIUser} user
+ */
+async function createSim(user) {
+	assert.notEqual(user.discriminator, "0000", "user is not a webhook")
+	fetch("https://matrix.cadence.moe/_matrix/client/v3/register", {
+		method: "POST",
+		body: JSON.stringify({
+			type: "m.login.application_service",
+			username: "_ooye_example"
+		}),
+		headers: {
+			Authorization: `Bearer ${reg.as_token}`
+		}
+	}).then(res => res.text()).then(text => {
+
+		console.log(text)
+	}).catch(err => {
+		console.log(err)
+	})
diff --git a/types.d.ts b/types.d.ts
index 1f00836..8d15d6b 100644
--- a/types.d.ts
+++ b/types.d.ts
@@ -46,4 +46,12 @@ namespace R {
 	export type FileUploaded = {
 		content_uri: string
 	}
+
+	export type Registered = {
+		/** "@localpart:domain.tld" */
+		user_id: string
+		home_server: string
+		access_token: string
+		device_id: string
+	}
 }