Configure Deepgram local development workflow with testing and mocks.
Use when setting up development environment, configuring test fixtures,
or establishing rapid iteration patterns for Deepgram integration.
Trigger: "deepgram local dev", "deepgram development setup",
"deepgram test environment", "deepgram dev workflow", "deepgram mock".
Configure Deepgram local development workflow with testing and mocks.
Use when setting up development environment, configuring test fixtures,
or establishing rapid iteration patterns for Deepgram integration.
Trigger: "deepgram local dev", "deepgram development setup",
"deepgram test environment", "deepgram dev workflow", "deepgram mock".
Designed for Claude Code, also compatible with Codex and OpenClaw
Deepgram Local Dev Loop
Overview
Set up a fast local development workflow for Deepgram: test fixtures with sample audio, mock responses for offline unit tests, Vitest integration tests against the real API, and a watch-mode transcription dev server.
# .env.development
DEEPGRAM_API_KEY=your-dev-key
DEEPGRAM_MODEL=nova-3
# .env.test (use a separate test key with low limits)
DEEPGRAM_API_KEY=your-test-key
DEEPGRAM_MODEL=base
{"scripts":{"dev":"tsx watch src/transcribe.ts","test":"vitest","test:watch":"vitest --watch","test:integration":"vitest run tests/integration/"}}
Step 4: Mock Deepgram Responses
// tests/mocks/deepgram-responses.tsexportconst mockPrerecordedResult = {
metadata: {
request_id: 'mock-request-id-001',
created: '2026-01-01T00:00:00.000Z',
duration: 12.5,
channels: 1,
models: ['nova-3'],
model_info: { 'nova-3': { name: 'nova-3', version: '2026-01-01' } },
},
results: {
channels: [{
alternatives: [{
transcript: 'Life moves pretty fast. If you don\'t stop and look around once in a while, you could miss it.',
confidence: 0.98,
words: [
{ word: 'life', start: 0.08, end: 0.32, confidence: 0.99, punctuated_word: 'Life' },
{ word: 'moves', start: 0.32, end: 0.56, confidence: 0.98, punctuated_word: 'moves' },
{ word: 'pretty', start: 0.56, end: 0.88, confidence: 0.97, punctuated_word: 'pretty' },
{ word: 'fast', start: 0.88, end: 1.12, confidence: 0.99, punctuated_word: 'fast.' },
],
}],
}],
utterances: [{
speaker: 0,
transcript: 'Life moves pretty fast. If you don\'t stop and look around once in a while, you could miss it.',
start: 0.08,
end: 5.44,
confidence: 0.98,
}],
},
};
exportconst mockLiveTranscript = {
type: 'Results',
channel_index: [0, 1],
duration: 1.5,
start: 0.0,
is_final: true,
speech_final: true,
channel: {
alternatives: [{
transcript: 'Hello, how are you today?',
confidence: 0.95,
words: [
{ word: 'hello', start: 0.0, end: 0.3, confidence: 0.98, punctuated_word: 'Hello,' },
{ word: 'how', start: 0.35, end: 0.5, confidence: 0.96, punctuated_word: 'how' },
],
}],
},
};
exportconst mockTtsResponse = {
content_type: 'audio/wav',
request_id: 'mock-tts-001',
model_name: 'aura-2-thalia-en',
characters: { count: 42, limit: 100000 },
};
