diff --git a/src/types/index.ts b/src/types/index.ts
index 0f49a4a5b4..d7a6a13a8c 100644
--- a/src/types/index.ts
+++ b/src/types/index.ts
@@ -5,7 +5,7 @@
  * Import from "@/types" in any file.
  */
 
-export type { ProviderConnection, ProviderNode, ModelCooldownErrorPayload } from "./provider";
+export type { ModelCooldownErrorPayload } from "./provider";
 export type { ApiKey } from "./apiKey";
 export type { UsageEntry, UsageStats, ProviderUsageStats, ModelUsageStats, CallLog } from "./usage";
 export type { DatabaseSettings } from "./databaseSettings";
diff --git a/src/types/provider.ts b/src/types/provider.ts
index 2647a51123..051b1d780c 100644
--- a/src/types/provider.ts
+++ b/src/types/provider.ts
@@ -1,34 +1,3 @@
-/**
- * Provider connection — a configured cloud AI provider account.
- */
-export interface ProviderConnection {
-  id: string;
-  provider: string;
-  label: string;
-  url: string;
-  apiKey?: string;
-  oauthToken?: string;
-  oauthRefreshToken?: string;
-  oauthExpiresAt?: string;
-  isActive: boolean;
-  priority: number;
-  createdAt: string;
-  updatedAt: string;
-}
-
-/**
- * Provider node — a specific endpoint within a provider.
- */
-export interface ProviderNode {
-  id: string;
-  connectionId: string;
-  provider: string;
-  model: string;
-  baseUrl: string;
-  isActive: boolean;
-  priority: number;
-}
-
 export interface ModelCooldownErrorPayload {
   error: {
     message: string;
diff --git a/tests/unit/error-message-sanitization.test.ts b/tests/unit/error-message-sanitization.test.ts
index 3224a65d55..a3059e8a67 100644
--- a/tests/unit/error-message-sanitization.test.ts
+++ b/tests/unit/error-message-sanitization.test.ts
@@ -18,6 +18,9 @@ const mappingsRoute = await import("../../src/app/api/model-combo-mappings/route
 const mappingsIdRoute = await import("../../src/app/api/model-combo-mappings/[id]/route.ts");
 const syncTokens = await import("../../src/lib/sync/tokens.ts");
 
+const repoRoot = path.resolve(import.meta.dirname, "../..");
+const read = (relPath: string) => fs.readFileSync(path.join(repoRoot, relPath), "utf8");
+
 function makeRequest(url: string, options: { method?: string; body?: unknown } = {}) {
   const { method = "GET", body } = options;
   return new Request(url, {
@@ -240,6 +243,13 @@ test("buildErrorBody never exposes stack traces in its message", async () => {
   assert.ok(!body.error.message.includes("at /opt"));
 });
 
+test("types barrel keeps the model cooldown payload export only", async () => {
+  const src = await read("src/types/index.ts");
+  assert.match(src, /ModelCooldownErrorPayload/);
+  assert.doesNotMatch(src, /ProviderConnection/);
+  assert.doesNotMatch(src, /ProviderNode/);
+});
+
 // ── sanitizeUpstreamDetails ──────────────────────────────────────────────────
 
 test("sanitizeUpstreamDetails — basic pass-through for safe fields", async () => {