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generateTempToken()

Generates a temporary authentication token for AssemblyAI’s real-time transcription API.

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Function Signature

async function generateTempToken(expiresInSeconds)
Defined in tokenGenerator.js:4

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Parameters

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expiresInSeconds
number
required
The number of seconds until the token expires. Maximum value is 600 seconds (10 minutes).

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Return Value

Returns a Promise<string> that resolves to the temporary authentication token. 
return response.data.token;

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Error Handling

The function throws an error if:
  • The AssemblyAI API key is missing or invalid
  • The API request fails due to network issues
  • The AssemblyAI token generation endpoint is unavailable
Error messages are logged to the console with details from the API response: 
console.error("Error generating temp token:", error.response?.data || error.message);
throw error;

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Implementation

The function makes an HTTP GET request to AssemblyAI’s token generation endpoint: 
const url = `https://streaming.assemblyai.com/v3/token?expires_in_seconds=${expiresInSeconds}`;

try {
  const response = await axios.get(url, {
    headers: {
      Authorization: process.env.ASSEMBLYAI_API_KEY,
    },
  });
  return response.data.token;
} catch (error) {
  console.error("Error generating temp token:", error.response?.data || error.message);
  throw error;
}

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Environment Variables

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ASSEMBLYAI_API_KEY
string
required
Your AssemblyAI API key. Must be set in the .env file and loaded via dotenv.

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Usage Example

const { generateTempToken } = require("./tokenGenerator");

// Generate a token that expires in 60 seconds
try {
  const token = await generateTempToken(60);
  console.log("Token generated:", token);
} catch (error) {
  console.error("Failed to generate token:", error);
}

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Integration

This function is used by the Express server in server.js:12 to provide tokens to the client application: 
const token = await generateTempToken(60); // Max value 600
res.json({ token });

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