diff --git a/src/middleware/authentication.ts b/src/middleware/authentication.ts
new file mode 100644
index 0000000..fbe8ad1
--- /dev/null
+++ b/src/middleware/authentication.ts
@@ -0,0 +1,11 @@
+import { getNEXDataByPID } from '@/util';
+import type express from 'express';
+
+export default async function authenticationMiddleware(request: express.Request, response: express.Response, next: express.NextFunction): Promise<void> {
+	if (request.pid) {
+		// TODO - Get users PNIDs
+		request.nexAccount = await getNEXDataByPID(request.pid);
+	}
+
+	return next();
+}
diff --git a/src/server.ts b/src/server.ts
index da94cd9..a77c9ee 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -6,6 +6,7 @@ import RequestException from '@/request-exception';
 import { LOG_INFO, LOG_SUCCESS } from '@/logger';
 import { config } from '@/config-manager';
 import parseUserAgentMiddleware from '@/middleware/parse-user-agent';
+import authenticationMiddleware from '@/middleware/authentication';
 import nppl from '@/services/nppl';
 import npts from '@/services/npts';
 import npdi from '@/services/npdi';
@@ -28,6 +29,7 @@ app.use(express.urlencoded({
 }));
 
 app.use(parseUserAgentMiddleware);
+app.use(authenticationMiddleware);
 
 app.use(nppl);
 app.use(npts);
diff --git a/src/services/spr.ts b/src/services/spr.ts
index 3a7d0c6..207e770 100644
--- a/src/services/spr.ts
+++ b/src/services/spr.ts
@@ -3,7 +3,7 @@ import express from 'express';
 import subdomain from 'express-subdomain';
 import Dicer from 'dicer';
 import { getDuplicateCECData, getRandomCECData } from '@/database';
-import { getFriends, getNEXDataByPID } from '@/util';
+import { getFriends } from '@/util';
 import { CECData } from '@/models/cec-data';
 import { CECSlot } from '@/models/cec-slot';
 import { SendMode } from '@/types/common/spr-slot';
@@ -70,19 +70,13 @@ spr.post('/relay/0', multipartParser, async (request, response) => {
 		return;
 	}
 
-	if (!request.pid) {
-		response.sendStatus(400);
-		return;
-	}
-
-	const nexAccount = await getNEXDataByPID(request.pid);
-	if (!nexAccount) {
+	if (!request.pid || !request.nexAccount) {
 		response.sendStatus(400);
 		return;
 	}
 
 	// * Check that the account is a 3DS and isn't banned
-	if (!nexAccount.friendCode || nexAccount.accessLevel < 0) {
+	if (!request.nexAccount.friendCode || request.nexAccount.accessLevel < 0) {
 		response.sendStatus(400);
 		return;
 	}
diff --git a/src/types/express.d.ts b/src/types/express.d.ts
index 936a4fe..f47a006 100644
--- a/src/types/express.d.ts
+++ b/src/types/express.d.ts
@@ -1,6 +1,11 @@
-declare namespace Express {
-	interface Request {
-		files?: Record<string, any>;
-		pid: number;
+import type { GetNEXDataResponse } from '@pretendonetwork/grpc/account/get_nex_data_rpc';
+
+declare global {
+	namespace Express {
+		interface Request {
+			files?: Record<string, any>;
+			pid: number;
+			nexAccount: GetNEXDataResponse | null;
+		}
 	}
 }