fix(ai-wandb): require clean api base urls (#822)

Author: aiirvizionz

packages/ai/wandb/src/index.test.ts

@@ -85,26 +85,51 @@ describe('W&B Inference generation', () => {
   });
 
   it('supports text-style choices from compatible responses', async () => {
-    vi.stubGlobal('fetch', vi.fn().mockResolvedValue({
+    const fetchMock = vi.fn().mockResolvedValue({
       ok: true,
       json: async () => ({
         choices: [{ text: 'legacy text response' }],
       }),
-    }));
+    });
+    vi.stubGlobal('fetch', fetchMock);
 
     const result = await adapter.generate(
       ctx(),
       'hello',
       { model: 'deepseek-ai/DeepSeek-V3-0324' },
-      { baseUrl: 'https://wandb.test/v1' },
+      { baseUrl: 'https://wandb.test/v1/' },
     );
 
+    expect(fetchMock.mock.calls[0]?.[0]).toBe('https://wandb.test/v1/chat/completions');
     expect(result).toEqual({
       text: 'legacy text response',
       model: 'deepseek-ai/DeepSeek-V3-0324',
     });
   });
 
+  it('rejects invalid or unclean custom base URLs before network calls', async () => {
+    const fetchMock = vi.fn();
+    vi.stubGlobal('fetch', fetchMock);
+
+    await expect(
+      adapter.generate(ctx(), 'hello', {}, { baseUrl: 'wandb.test/v1' }),
+    ).rejects.toThrow('valid URL');
+    await expect(
+      adapter.generate(ctx(), 'hello', {}, { baseUrl: 'ftp://wandb.test/v1' }),
+    ).rejects.toThrow('http or https');
+    await expect(
+      adapter.generate(ctx(), 'hello', {}, { baseUrl: 'https://user:pass@wandb.test/v1' }),
+    ).rejects.toThrow('clean API base');
+    await expect(
+      adapter.generate(ctx(), 'hello', {}, { baseUrl: 'https://wandb.test/v1?target=chat' }),
+    ).rejects.toThrow('clean API base');
+    await expect(
+      adapter.generate(ctx(), 'hello', {}, { baseUrl: 'https://wandb.test/v1#chat' }),
+    ).rejects.toThrow('clean API base');
+
+    expect(fetchMock).not.toHaveBeenCalled();
+  });
+
   it('includes status and response body excerpt on errors', async () => {
     vi.stubGlobal('fetch', vi.fn().mockResolvedValue({
       ok: false,

packages/ai/wandb/src/index.ts

@@ -35,7 +35,8 @@ export default defineAi<Config>({
     };
     if (config.project) headers['OpenAI-Project'] = config.project;
 
-    const res = await fetch(`${config.baseUrl ?? DEFAULT_BASE}/chat/completions`, {
+    const baseUrl = cleanBaseUrl(config.baseUrl ?? DEFAULT_BASE);
+    const res = await fetch(`${baseUrl}/chat/completions`, {
       method: 'POST',
       headers,
       body: JSON.stringify({
@@ -72,6 +73,22 @@ export default defineAi<Config>({
   }),
 });
 
+function cleanBaseUrl(value: string): string {
+  let url: URL;
+  try {
+    url = new URL(value);
+  } catch {
+    throw new Error('W&B Inference baseUrl must be a valid URL');
+  }
+  if (url.protocol !== 'https:' && url.protocol !== 'http:') {
+    throw new Error('W&B Inference baseUrl must use http or https');
+  }
+  if (url.username || url.password || url.search || url.hash) {
+    throw new Error('W&B Inference baseUrl must be a clean API base without credentials, query, or hash');
+  }
+  return url.toString().replace(/\/+$/, '');
+}
+
 type WandbRole = 'system' | 'user' | 'assistant' | 'tool';
 
 interface WandbMessage {