Add logo_uri to OAuth client metadata for DCR branding

mcpjam-inspector/client/src/lib/oauth/__tests__/client-metadata.test.ts

@@ -0,0 +1,44 @@
+/**
+ * Tests that OAuth client metadata includes logo_uri for branding
+ * during OAuth consent flows (issue #1552).
+ */
+
+import { describe, it, expect, vi, beforeEach } from "vitest";
+
+// Mock browser dependencies used by the providers
+vi.mock("@/lib/session-token", () => ({
+  authFetch: vi.fn(),
+}));
+
+vi.mock("../state-machines/shared/helpers", () => ({
+  generateRandomString: vi.fn(() => "mock-random-string"),
+}));
+
+const EXPECTED_LOGO_URI = "https://www.mcpjam.com/mcp_jam_2row.png";
+
+describe("OAuth client metadata logo_uri", () => {
+  beforeEach(() => {
+    vi.resetModules();
+    localStorage.clear();
+    sessionStorage.clear();
+  });
+
+  it("MCPOAuthProvider includes logo_uri in clientMetadata", async () => {
+    const { MCPOAuthProvider } = await import("../mcp-oauth");
+    const provider = new MCPOAuthProvider("test-server");
+    expect(provider.clientMetadata).toHaveProperty(
+      "logo_uri",
+      EXPECTED_LOGO_URI,
+    );
+  });
+
+  it("DebugMCPOAuthClientProvider includes logo_uri in clientMetadata", async () => {
+    const { DebugMCPOAuthClientProvider } =
+      await import("../debug-oauth-provider");
+    const provider = new DebugMCPOAuthClientProvider("https://example.com");
+    expect(provider.clientMetadata).toHaveProperty(
+      "logo_uri",
+      EXPECTED_LOGO_URI,
+    );
+  });
+});

mcpjam-inspector/client/src/lib/oauth/debug-oauth-provider.ts

@@ -32,6 +32,7 @@ export class DebugMCPOAuthClientProvider implements OAuthClientProvider {
       response_types: ["code"],
       client_name: "MCPJam",
       client_uri: "https://github.com/mcpjam/inspector",
+      logo_uri: "https://www.mcpjam.com/mcp_jam_2row.png",
     };
   }
 

mcpjam-inspector/client/src/lib/oauth/mcp-oauth.ts

@@ -141,6 +141,7 @@ export class MCPOAuthProvider implements OAuthClientProvider {
     return {
       client_name: `MCPJam - ${this.serverName}`,
       client_uri: "https://github.com/mcpjam/inspector",
+      logo_uri: "https://www.mcpjam.com/mcp_jam_2row.png",
       redirect_uris: [this.redirectUri],
       grant_types: ["authorization_code", "refresh_token"],
       response_types: ["code"],