diff --git a/server/src/server/middleware/prudence-validate.ts b/server/src/server/middleware/prudence-validate.ts
index 9d7d2ac29..f162a3d64 100644
--- a/server/src/server/middleware/prudence-validate.ts
+++ b/server/src/server/middleware/prudence-validate.ts
@@ -1,4 +1,10 @@
-import Prudence, { MiddlewareErrorHandler } from "prudence";
+import Prudence, {
+	MiddlewareErrorHandler,
+	PrudenceSchema,
+	ErrorMessages,
+	PrudenceOptions,
+} from "prudence";
+import { RequestHandler } from "express-serve-static-core";
 import CreateLogCtx from "lib/logger/logger";
 
 const logger = CreateLogCtx(__filename);
@@ -6,31 +12,52 @@ const logger = CreateLogCtx(__filename);
 const printf = (message: string, stringVal: string | null, keychain: string | null) =>
 	`[${keychain}] ${message}${stringVal ? ` (Received ${stringVal})` : ""}`;
 
-const API_ERR_HANDLER: MiddlewareErrorHandler = (req, res, next, error) => {
-	let stringVal = error.userVal;
-	if (error.keychain && error.keychain.includes("password") && error.userVal) {
-		stringVal = "****";
-	}
+const API_ERR_HANDLER =
+	(logLevel: TachiLogLevels): MiddlewareErrorHandler =>
+	(req, res, next, error) => {
+		let stringVal = error.userVal;
+		if (error.keychain && error.keychain.includes("password") && error.userVal) {
+			stringVal = "****";
+		}
 
-	if (typeof stringVal === "object" && stringVal !== null && !stringVal.toString) {
-		// this is probably null-prototype
-		stringVal = null;
-	} else if (stringVal === undefined) {
-		stringVal = "nothing";
-	} else {
-		stringVal = String(stringVal);
-	}
+		if (typeof stringVal === "object" && stringVal !== null && !stringVal.toString) {
+			// this is probably null-prototype
+			stringVal = null;
+		} else if (stringVal === undefined) {
+			stringVal = "nothing";
+		} else {
+			stringVal = String(stringVal);
+		}
 
-	logger.info(`Prudence rejection: ${error.message}, ${stringVal} [K:${error.keychain}]`, {
-		userVal: error.userVal,
-	});
+		logger[logLevel](
+			`Prudence rejection: ${error.message}, ${stringVal} [K:${error.keychain}]`,
+			{
+				userVal: error.userVal,
+			}
+		);
 
-	return res.status(400).json({
-		success: false,
-		description: printf(error.message, stringVal as string | null, error.keychain),
-	});
-};
+		return res.status(400).json({
+			success: false,
+			description: printf(error.message, stringVal as string | null, error.keychain),
+		});
+	};
 
-const prValidate = Prudence.CurryMiddleware(API_ERR_HANDLER);
+// Cache all of the possible API_ERROR_HANDLERS to avoid function creation
+// overhead at runtime.
+const API_ERROR_HANDLERS = Object.fromEntries(
+	(["crit", "severe", "error", "warn", "info", "verbose", "debug"] as const).map((e) => [
+		e,
+		API_ERR_HANDLER(e),
+	])
+) as Record<TachiLogLevels, MiddlewareErrorHandler>;
+
+type TachiLogLevels = "crit" | "severe" | "error" | "warn" | "info" | "verbose" | "debug";
+
+const prValidate = (
+	s: PrudenceSchema,
+	errorMessage?: ErrorMessages,
+	options?: Partial<PrudenceOptions>,
+	level: TachiLogLevels = "info"
+): RequestHandler => Prudence.CurryMiddleware(API_ERROR_HANDLERS[level])(s, errorMessage, options);
 
 export default prValidate;
diff --git a/server/src/server/router/api/v1/auth/router.ts b/server/src/server/router/api/v1/auth/router.ts
index 0682c5b3b..bf69b38e8 100644
--- a/server/src/server/router/api/v1/auth/router.ts
+++ b/server/src/server/router/api/v1/auth/router.ts
@@ -50,7 +50,9 @@ router.post(
 			username:
 				"Invalid username. Usernames cannot start with a number, and must be between 2 and 20 characters.",
 			captcha: "Please fill out the captcha.",
-		}
+		},
+		undefined,
+		"verbose"
 	),
 	async (req, res) => {
 		if (req.session.tachi?.user.id) {
@@ -171,7 +173,9 @@ router.post(
 			email: "Invalid email.",
 			inviteCode: "Invalid invite code.",
 			captcha: "Please fill out the captcha.",
-		}
+		},
+		undefined,
+		"verbose"
 	),
 	async (req, res) => {
 		logger.verbose(`Recieved register request with username ${req.body.username} (${req.ip})`);