fix: harden custom-provider verification probes (#24743) (thanks @Glucksberg)

CHANGELOG.md

@@ -10,6 +10,7 @@ Docs: https://docs.openclaw.ai
 
 ### Fixes
 
+- Onboarding/Custom providers: raise verification probe token budgets for OpenAI and Anthropic compatibility checks to avoid false negatives on strict provider defaults. (#24743) Thanks @Glucksberg.
 - WhatsApp/DM routing: only update main-session last-route state when DM traffic is bound to the main session, preserving isolated `dmScope` routing. (#24949) Thanks @kevinWangSheng.
 - Providers/OpenRouter: when thinking is explicitly off, avoid injecting `reasoning.effort` so reasoning-required models can use provider defaults instead of failing request validation. (#24863) Thanks @DevSecTim.
 - Status/Pairing recovery: show explicit pairing-approval command hints (including requestId when safe) when gateway probe failures report pairing-required closures. (#24771) Thanks @markmusson.

src/commands/onboard-custom.test.ts

@@ -116,6 +116,35 @@ describe("promptCustomApiConfig", () => {
     expectOpenAiCompatResult({ prompter, textCalls: 5, selectCalls: 1, result });
   });
 
+  it("uses expanded max_tokens for openai verification probes", async () => {
+    const prompter = createTestPrompter({
+      text: ["https://example.com/v1", "test-key", "detected-model", "custom", "alias"],
+      select: ["openai"],
+    });
+    const fetchMock = stubFetchSequence([{ ok: true }]);
+
+    await runPromptCustomApi(prompter);
+
+    const firstCall = fetchMock.mock.calls[0]?.[1] as { body?: string } | undefined;
+    expect(firstCall?.body).toBeDefined();
+    expect(JSON.parse(firstCall?.body ?? "{}")).toMatchObject({ max_tokens: 1024 });
+  });
+
+  it("uses expanded max_tokens for anthropic verification probes", async () => {
+    const prompter = createTestPrompter({
+      text: ["https://example.com", "test-key", "detected-model", "custom", "alias"],
+      select: ["unknown"],
+    });
+    const fetchMock = stubFetchSequence([{ ok: false, status: 404 }, { ok: true }]);
+
+    await runPromptCustomApi(prompter);
+
+    expect(fetchMock).toHaveBeenCalledTimes(2);
+    const secondCall = fetchMock.mock.calls[1]?.[1] as { body?: string } | undefined;
+    expect(secondCall?.body).toBeDefined();
+    expect(JSON.parse(secondCall?.body ?? "{}")).toMatchObject({ max_tokens: 1024 });
+  });
+
   it("re-prompts base url when unknown detection fails", async () => {
     const prompter = createTestPrompter({
       text: [