diff --git a/app/api/[[...slugs]]/route.ts b/app/api/[[...slugs]]/route.ts
index 060bae4..81f5a10 100644
--- a/app/api/[[...slugs]]/route.ts
+++ b/app/api/[[...slugs]]/route.ts
@@ -9,6 +9,7 @@ import {
   hardwareRoutes,
   performanceRoutes,
   performanceVerifyRoutes,
+  performanceSubmitRoutes,
   presetsRoutes,
   presetUpvoteRoutes,
   presetSettingsRoutes,
@@ -64,6 +65,7 @@ export const app = new Elysia({ prefix: "/api" })
   // Performance
   .use(performanceRoutes)
   .use(performanceVerifyRoutes)
+  .use(performanceSubmitRoutes)
   // Presets
   .use(presetsRoutes)
   .use(presetUpvoteRoutes)
diff --git a/lib/api/index.ts b/lib/api/index.ts
index 6823dbb..a38c443 100644
--- a/lib/api/index.ts
+++ b/lib/api/index.ts
@@ -3,6 +3,7 @@ export { userRoutes } from "./user"
 export { gamesRoutes, gameVersionsRoutes } from "./games"
 export { hardwareRoutes } from "./hardware"
 export { performanceRoutes, performanceVerifyRoutes } from "./performance"
+export { performanceSubmitRoutes } from "./performance-submit"
 export {
   presetsRoutes,
   presetUpvoteRoutes,
diff --git a/lib/api/performance-submit.ts b/lib/api/performance-submit.ts
new file mode 100644
index 0000000..9a98a06
--- /dev/null
+++ b/lib/api/performance-submit.ts
@@ -0,0 +1,171 @@
+import { Elysia, t } from "elysia"
+import { auth } from "@/lib/auth"
+import { db } from "@/lib/db/index"
+import {
+  performanceEntries,
+  gameVersions,
+  hardware,
+} from "@/lib/db/schema"
+import { eq, sql, and } from "drizzle-orm"
+import { requireRole } from "@/lib/auth/guard"
+
+export const performanceSubmitRoutes = new Elysia({ prefix: "/performance" })
+  .get(
+    "/autocomplete",
+    async ({ query }) => {
+      const field = query.field
+
+      if (field !== "protonVersion" && field !== "osVersion") {
+        return { data: [] }
+      }
+
+      const results = await db
+        .select({ value: performanceEntries[field] })
+        .from(performanceEntries)
+        .where(sql`${performanceEntries[field]} IS NOT NULL`)
+        .groupBy(performanceEntries[field])
+        .orderBy(sql`count(*) DESC`)
+        .limit(20)
+
+      return {
+        data: results
+          .map((r) => r.value)
+          .filter((v): v is string => v !== null),
+      }
+    },
+    {
+      query: t.Object({
+        field: t.Union([
+          t.Literal("protonVersion"),
+          t.Literal("osVersion"),
+        ]),
+      }),
+    },
+  )
+  .get(
+    "/hardware",
+    async () => {
+      const devices = await db
+        .select({
+          slug: hardware.slug,
+          name: hardware.name,
+          deviceType: hardware.deviceType,
+        })
+        .from(hardware)
+        .orderBy(hardware.sortOrder)
+
+      return { data: devices }
+    },
+  )
+  .post(
+    "/submit",
+    async ({ request, body, set }) => {
+      const guard = await requireRole(request.headers, [
+        "user",
+        "contributor",
+        "admin",
+      ])
+      if (!guard.ok) {
+        set.status = guard.status
+        return { error: guard.error }
+      }
+
+      // Verify the game version exists
+      const [version] = await db
+        .select({ id: gameVersions.id })
+        .from(gameVersions)
+        .where(eq(gameVersions.id, body.versionId))
+        .limit(1)
+
+      if (!version) {
+        set.status = 404
+        return { error: "Game version not found" }
+      }
+
+      // Verify hardware exists
+      const [device] = await db
+        .select({ slug: hardware.slug })
+        .from(hardware)
+        .where(eq(hardware.slug, body.hardwareSlug))
+        .limit(1)
+
+      if (!device) {
+        set.status = 404
+        return { error: "Hardware not found" }
+      }
+
+      // Create the performance entry
+      const [entry] = await db
+        .insert(performanceEntries)
+        .values({
+          versionId: body.versionId,
+          hardwareSlug: body.hardwareSlug,
+          userId: guard.user.id,
+          fpsAvg: body.fpsAvg,
+          fpsLow: body.fpsLow ?? null,
+          fpsHigh: body.fpsHigh ?? null,
+          protonVersion: body.protonVersion ?? null,
+          osVersion: body.osVersion ?? null,
+          fsrVersion: body.fsrVersion ?? "none",
+          frameGenMethod: body.frameGenMethod ?? "none",
+          loadTimeSsd: body.loadTimeSsd ?? null,
+          loadTimeSd: body.loadTimeSd ?? null,
+          launchOptions: body.launchOptions ?? null,
+          settingsJson: body.settingsJson ?? null,
+          userNotes: body.userNotes ?? null,
+        })
+        .returning()
+
+      set.status = 201
+      return {
+        id: entry.id,
+        createdAt: entry.createdAt.toISOString(),
+      }
+    },
+    {
+      body: t.Object({
+        versionId: t.String(),
+        hardwareSlug: t.String(),
+        fpsAvg: t.Number(),
+        fpsLow: t.Optional(t.Union([t.Number(), t.Null()])),
+        fpsHigh: t.Optional(t.Union([t.Number(), t.Null()])),
+        protonVersion: t.Optional(t.Union([t.String(), t.Null()])),
+        osVersion: t.Optional(t.Union([t.String(), t.Null()])),
+        fsrVersion: t.Optional(
+          t.Union([
+            t.Literal("none"),
+            t.Literal("fsr1"),
+            t.Literal("fsr2"),
+            t.Literal("fsr3"),
+          ]),
+        ),
+        frameGenMethod: t.Optional(
+          t.Union([
+            t.Literal("none"),
+            t.Literal("fsr_fg"),
+            t.Literal("dlss_fg"),
+          ]),
+        ),
+        loadTimeSsd: t.Optional(t.Union([t.Number(), t.Null()])),
+        loadTimeSd: t.Optional(t.Union([t.Number(), t.Null()])),
+        launchOptions: t.Optional(t.Union([t.String(), t.Null()])),
+        settingsJson: t.Optional(
+          t.Union([
+            t.Array(
+              t.Object({
+                category: t.String(),
+                settings: t.Array(
+                  t.Object({
+                    title: t.String(),
+                    value: t.Union([t.String(), t.Number(), t.Boolean()]),
+                  }),
+                ),
+              }),
+            ),
+            t.Null(),
+          ]),
+        ),
+        userNotes: t.Optional(t.Union([t.String(), t.Null()])),
+      }),
+    },
+  )