microsoft/autogen · error · Error

Failed to test component

Error message

Failed to test component

What it means

Thrown by ValidationAPI.testComponent when POST /validate/test returns a non-2xx status after attempting to actually execute/test the component (with a default 60s timeout). The server message is preferred; this string is the fallback when the body lacks one. It means the test run of the component failed or could not start.

Source

Thrown at python/packages/autogen-studio/frontend/src/components/views/teambuilder/api.ts:114

    return data;
  }

  async testComponent(
    component: Component<ComponentConfig>,
    timeout: number = 60
  ): Promise<ComponentTestResult> {
    const response = await fetch(`${this.getBaseUrl()}/validate/test`, {
      method: "POST",
      headers: this.getHeaders(),
      body: JSON.stringify({
        component: component,
        timeout: timeout,
      }),
    });

    const data = await response.json();
    if (!response.ok) {
      throw new Error(data.message || "Failed to test component");
    }

    return data;
  }
}

export const teamAPI = new TeamAPI();
export const validationAPI = new ValidationAPI();

View on GitHub (pinned to 027ecf0a37)

Solutions

1. Read the full error string — the server's message (e.g. 'API key not valid') is embedded when present.
2. Verify the component's model config contains a valid api_key before testing.
3. Increase the timeout argument for components that make real LLM calls.
4. If the component is custom code, run/test its __init__ and run logic locally against the same Python deps the server has.

if (!component.config) throw new Error('Component has no config to test');
const needsLlm = JSON.stringify(component).includes('"model"');
if (needsLlm && !hasAnyApiKey(component.config)) {
  throw new Error('Add a valid api_key to the model config before testing');
}

try {
  const result = await validationAPI.testComponent(component, 120);
  displayTestResult(result);
} catch (e) {
  if (e instanceof Error && /timeout/i.test(e.message)) {
    retryWithLongerTimeout(component);
  } else {
    setError(e instanceof Error ? e.message : 'Component test failed');
  }
}

When it happens

Trigger: Calling validationAPI.testComponent(component, timeout) where the sandboxed test fails: component's init raises (bad imports, missing dependencies), LLM call fails (invalid API key in config), the test exceeds the timeout, or the server returns 500 with an empty body. Message is the generic fallback only when data.message is absent.

Common situations: Testing an agent component whose model config has an invalid/missing API key; custom component code importing packages not installed in the server environment; timeout too short for a real LLM round-trip.

Related errors

• Failed to delete team
• Failed to validate component
• Failed to list MCP tools
• HTTP ${response.status}: ${errorText || "Failed to create We
• Failed to call MCP tool

AI-assisted analysis of microsoft/autogen@027ecf0a37 (2026-08-15). Data as JSON: /api/errors/a35bb1306151d12f. Report an issue: GitHub.