QA: Voice input — Claude Agent SDK (Python)

Prerequisites

• Demo is deployed and accessible
• Agent backend is healthy (check /api/health)
• ANTHROPIC_API_KEY is set on the deployment (for chat replies)
• OPENAI_API_KEY is set on the Next.js runtime (for Whisper transcription). If it is not, the mic button still renders but clicking it (or clicking "Play sample") will return a clean 401.

Test Steps

1. Basic Functionality

• Navigate to /demos/voice
• Verify the "Voice input" header renders
• Verify the mic button is visible on the chat composer
• Verify the "Play sample" button renders next to a caption matching SAMPLE_LABEL (e.g. "What is the weather in Tokyo?")

2. Feature-Specific Checks

Play sample

• Click "Play sample"
• Verify the button flips to "Transcribing…" briefly
• Verify the composer's textarea is populated with the transcribed text
• Press send and verify Claude replies to the transcribed prompt

Mic button (manual)

• Click the mic button, allow microphone access, speak a short sentence, click again
• Verify the textarea is populated with the transcription
• Press send and verify Claude replies

3. Misconfigured deployment

• With OPENAI_API_KEY unset, click "Play sample"
• Verify the error slot renders "Error — see console"
• Verify the network response is HTTP 401, not 500/503

4. Error Handling

• No console errors during normal usage (other than the expected 401 when OPENAI_API_KEY is missing).

Expected Results

• Mic button always visible (transcription service is always mounted).
• Missing OPENAI_API_KEY manifests as 401, not silent failure.