diff --git a/.changeset/oauth-provider-admin-routes.md b/.changeset/oauth-provider-admin-routes.md
new file mode 100644
index 0000000..e6bb16c
--- /dev/null
+++ b/.changeset/oauth-provider-admin-routes.md
@@ -0,0 +1,6 @@
+---
+"@seamless-auth/core": patch
+"@seamless-auth/express": patch
+---
+
+Proxy the new OAuth provider admin routes to the auth API: `GET`/`POST /system-config/oauth-providers` and `PATCH`/`DELETE /system-config/oauth-providers/:id`, all gated on the access identity. Register `/system-config/oauth-providers` in the core cookie requirements table so the ensureCookies middleware populates `req.cookiePayload` for both the collection and the id-scoped routes; without it the proxy never attaches the access token and the routes fail closed.
diff --git a/packages/core/src/ensureCookies.ts b/packages/core/src/ensureCookies.ts
index 79a3b38..60836d8 100644
--- a/packages/core/src/ensureCookies.ts
+++ b/packages/core/src/ensureCookies.ts
@@ -175,6 +175,12 @@ const COOKIE_REQUIREMENTS: Record<
     required: true,
   },
 
+  // Prefix match covers both the collection and the id-scoped provider routes.
+  "/system-config/oauth-providers": {
+    name: "accessCookieName",
+    required: true,
+  },
+
   "/system-config/roles": {
     name: "accessCookieName",
     required: true,
diff --git a/packages/express/src/createServer.ts b/packages/express/src/createServer.ts
index a439c48..938d83f 100644
--- a/packages/express/src/createServer.ts
+++ b/packages/express/src/createServer.ts
@@ -510,6 +510,31 @@ export function createSeamlessAuthServer(
     updateSystemConfig(req, res, resolvedOpts),
   );
 
+  r.get(
+    "/system-config/oauth-providers",
+    proxyWithIdentity("system-config/oauth-providers", "access", "GET"),
+  );
+  r.post(
+    "/system-config/oauth-providers",
+    proxyWithIdentity("system-config/oauth-providers", "access", "POST"),
+  );
+  r.patch(
+    "/system-config/oauth-providers/:id",
+    proxyWithIdentity(
+      (req) => `system-config/oauth-providers/${req.params.id}`,
+      "access",
+      "PATCH",
+    ),
+  );
+  r.delete(
+    "/system-config/oauth-providers/:id",
+    proxyWithIdentity(
+      (req) => `system-config/oauth-providers/${req.params.id}`,
+      "access",
+      "DELETE",
+    ),
+  );
+
   r.get("/internal/auth-events/summary", (req, res) =>
     getAuthEventSummary(req, res, resolvedOpts),
   );
diff --git a/packages/express/tests/oauthProvidersProxy.test.js b/packages/express/tests/oauthProvidersProxy.test.js
new file mode 100644
index 0000000..88bcde7
--- /dev/null
+++ b/packages/express/tests/oauthProvidersProxy.test.js
@@ -0,0 +1,162 @@
+import { jest } from "@jest/globals";
+import express from "express";
+import jwt from "jsonwebtoken";
+import request from "supertest";
+
+const { default: createSeamlessAuthServer } = await import("../dist/index.js");
+
+function createJsonResponse(status, body) {
+  return {
+    ok: status >= 200 && status < 300,
+    status,
+    json: async () => body,
+  };
+}
+
+function createAccessCookie(subject = "admin-123") {
+  const token = jwt.sign(
+    { sub: subject, roles: ["admin"], token: "access-token" },
+    "cookie-secret-cookie-secret-cookie-secret",
+    {
+      algorithm: "HS256",
+      expiresIn: "300s",
+    },
+  );
+
+  return `seamless-access=${token}`;
+}
+
+function createApp() {
+  const app = express();
+
+  app.use(
+    "/auth",
+    createSeamlessAuthServer({
+      authServerUrl: "https://auth.example.com",
+      cookieSecret: "cookie-secret-cookie-secret-cookie-secret",
+      serviceSecret: "service-secret-service-secret-service-secret",
+      audience: "https://auth.example.com",
+      jwksKid: "test-main",
+    }),
+  );
+
+  return app;
+}
+
+describe("oauth provider admin proxy routes", () => {
+  const originalFetch = global.fetch;
+
+  beforeEach(() => {
+    global.fetch = jest.fn();
+  });
+
+  afterEach(() => {
+    global.fetch = originalFetch;
+  });
+
+  it("proxies the provider list with access identity", async () => {
+    global.fetch.mockResolvedValue(
+      createJsonResponse(200, { providers: [{ id: "google" }] }),
+    );
+
+    const res = await request(createApp())
+      .get("/auth/system-config/oauth-providers")
+      .set("Cookie", createAccessCookie());
+
+    expect(res.status).toBe(200);
+    expect(res.body).toEqual({ providers: [{ id: "google" }] });
+
+    expect(global.fetch).toHaveBeenCalledWith(
+      "https://auth.example.com/system-config/oauth-providers",
+      expect.objectContaining({
+        method: "GET",
+        headers: expect.objectContaining({
+          Authorization: "Bearer access-token",
+        }),
+      }),
+    );
+  });
+
+  it("proxies provider creation with the request body", async () => {
+    global.fetch.mockResolvedValue(
+      createJsonResponse(201, { provider: { id: "github" } }),
+    );
+
+    const body = {
+      id: "github",
+      name: "GitHub",
+      clientId: "gh-client",
+      clientSecretEnv: "GITHUB_CLIENT_SECRET",
+      authorizationUrl: "https://github.com/login/oauth/authorize",
+      tokenUrl: "https://github.com/login/oauth/access_token",
+      userInfoUrl: "https://api.github.com/user",
+    };
+
+    const res = await request(createApp())
+      .post("/auth/system-config/oauth-providers")
+      .set("Cookie", createAccessCookie())
+      .send(body);
+
+    expect(res.status).toBe(201);
+    expect(res.body).toEqual({ provider: { id: "github" } });
+
+    expect(global.fetch).toHaveBeenCalledWith(
+      "https://auth.example.com/system-config/oauth-providers",
+      expect.objectContaining({
+        method: "POST",
+        body: JSON.stringify(body),
+      }),
+    );
+  });
+
+  it("proxies a provider update to the id-scoped upstream path", async () => {
+    global.fetch.mockResolvedValue(
+      createJsonResponse(200, { provider: { id: "google", enabled: false } }),
+    );
+
+    const res = await request(createApp())
+      .patch("/auth/system-config/oauth-providers/google")
+      .set("Cookie", createAccessCookie())
+      .send({ enabled: false });
+
+    expect(res.status).toBe(200);
+    expect(global.fetch).toHaveBeenCalledWith(
+      "https://auth.example.com/system-config/oauth-providers/google",
+      expect.objectContaining({
+        method: "PATCH",
+        body: JSON.stringify({ enabled: false }),
+      }),
+    );
+  });
+
+  it("proxies a provider deletion to the id-scoped upstream path", async () => {
+    global.fetch.mockResolvedValue(
+      createJsonResponse(200, { success: true, id: "google" }),
+    );
+
+    const res = await request(createApp())
+      .delete("/auth/system-config/oauth-providers/google")
+      .set("Cookie", createAccessCookie());
+
+    expect(res.status).toBe(200);
+    expect(res.body).toEqual({ success: true, id: "google" });
+    expect(global.fetch).toHaveBeenCalledWith(
+      "https://auth.example.com/system-config/oauth-providers/google",
+      expect.objectContaining({
+        method: "DELETE",
+      }),
+    );
+  });
+
+  it("does not proxy an unauthenticated provider list request", async () => {
+    const res = await request(createApp()).get(
+      "/auth/system-config/oauth-providers",
+    );
+
+    // ensureCookies gates access-required routes before the handler: with no
+    // access or refresh cookie present it returns a 400 "missing cookie" rather
+    // than forwarding upstream.
+    expect(res.status).toBe(400);
+    expect(global.fetch).not.toHaveBeenCalled();
+  });
+});