Triggering Genesys Cloud Outbound Call Recording Transcription via Node.js

What You Will Build

• A Node.js module that submits transcription jobs for outbound call recordings using the Genesys Cloud Recordings API.
• The code validates recording metadata, constructs PII-redaction directives, manages concurrent job limits, and polls for completion status.
• The implementation uses JavaScript with ES modules, axios, and the official @genesyscloud/api-client-node SDK.

Prerequisites

• OAuth Client Credentials flow with scopes: recordings:read, transcripts:write, analytics:report:read
• Genesys Cloud Node.js SDK v6+ (@genesyscloud/api-client-node)
• Node.js 18+
• Dependencies: axios, uuid, winston
• Environment variables: GENESYS_REGION, GENESYS_CLIENT_ID, GENESYS_CLIENT_SECRET

Authentication Setup

The Genesys Cloud SDK handles token acquisition and automatic refresh. You initialize the client with your organization region and client credentials. The SDK caches the access token and requests a new one before expiration.

import { PureCloudPlatformClientV2 } from '@genesyscloud/api-client-node';
import { RecordingsApi } from '@genesyscloud/recordings-api';

const initializeSdk = () => {
  const platformClient = PureCloudPlatformClientV2.create();
  const region = process.env.GENESYS_REGION || 'us-east-1';
  
  platformClient.setEnvironment(region);
  platformClient.loginClientCredentials(
    process.env.GENESYS_CLIENT_ID,
    process.env.GENESYS_CLIENT_SECRET
  );

  return new RecordingsApi(platformClient);
};

Implementation

Step 1: Recording Validation and Payload Construction

Before triggering transcription, you must verify that the recording meets speech engine constraints. Genesys Cloud requires supported audio formats and active retention policies. You will also map outbound campaign locale codes to BCP 47 language tags and attach PII redaction directives.

const LANGUAGE_MATRIX = {
  'en': 'en-US',
  'es': 'es-ES',
  'fr': 'fr-FR',
  'de': 'de-DE',
  'pt': 'pt-BR',
  'ja': 'ja-JP'
};

const SUPPORTED_FORMATS = ['audio/mp4', 'audio/wav', 'audio/mpeg'];

const validateRecording = async (recordingsApi, recordingId) => {
  const { body: recording } = await recordingsApi.getRecordingsRecording(recordingId);
  
  if (!SUPPORTED_FORMATS.includes(recording.audioFormat)) {
    throw new Error(`Unsupported audio format: ${recording.audioFormat}`);
  }

  if (recording.retentionPolicy === 'none' || recording.expiresAt < new Date().toISOString()) {
    throw new Error('Recording retention policy expires or is disabled. Transcription will fail.');
  }

  return recording;
};

const buildTranscriptPayload = (recordingId, campaignLocale, webhookUrl) => {
  const language = LANGUAGE_MATRIX[campaignLocale] || 'en-US';
  
  return {
    recordingId,
    language,
    redactions: [
      { type: 'creditCard' },
      { type: 'ssn' },
      { type: 'email' },
      { type: 'ipAddress' }
    ],
    webhookUrl
  };
};

Step 2: Atomic POST Submission with Concurrency Control

Genesys Cloud enforces server-side limits on concurrent transcription jobs. You must implement a client-side concurrency limiter to prevent 429 rate-limit cascades. The submission uses an atomic POST operation with exponential backoff for retryable errors.

import axios from 'axios';

class ConcurrencyLimiter {
  constructor(maxConcurrency) {
    this.maxConcurrency = maxConcurrency;
    this.current = 0;
    this.queue = [];
  }

  async acquire() {
    return new Promise((resolve) => {
      if (this.current < this.maxConcurrency) {
        this.current++;
        resolve();
      } else {
        this.queue.push(resolve);
      }
    });
  }

  release() {
    this.current--;
    if (this.queue.length > 0) {
      const next = this.queue.shift();
      next();
    }
  }
}

const submitTranscriptJob = async (recordingsApi, payload, limiter) => {
  await limiter.acquire();
  try {
    const { body } = await recordingsApi.postRecordingsTranscripts(payload);
    return body;
  } finally {
    limiter.release();
  }
};

Step 3: Status Polling, Webhook Synchronization, and Metrics Tracking

After submission, you poll the transcript status until completion or failure. You will track trigger latency, calculate success rates, and generate structured audit logs for governance. Webhook callbacks synchronize events with external analytics pipelines.

const POLL_INTERVAL_MS = 5000;
const MAX_POLL_ATTEMPTS = 60;

const pollTranscriptStatus = async (recordingsApi, recordingId, webhookUrl) => {
  let attempts = 0;
  const startTime = Date.now();
  
  while (attempts < MAX_POLL_ATTEMPTS) {
    await new Promise(resolve => setTimeout(resolve, POLL_INTERVAL_MS));
    attempts++;
    
    try {
      const { body: transcripts } = await recordingsApi.getRecordingsTranscripts(recordingId);
      const activeJob = transcripts?.find(t => t.status !== 'completed' && t.status !== 'error');
      
      if (!activeJob) break;
      
      if (activeJob.status === 'error') {
        throw new Error(`Transcription failed: ${activeJob.statusMessage}`);
      }
    } catch (err) {
      if (err.response?.status === 429) {
        const backoff = Math.min(2 ** attempts * 1000, 30000);
        await new Promise(resolve => setTimeout(resolve, backoff));
        continue;
      }
      throw err;
    }
  }
  
  const latencyMs = Date.now() - startTime;
  return { latencyMs, completed: true };
};

const generateAuditLog = (recordingId, payload, result) => {
  return {
    timestamp: new Date().toISOString(),
    event: 'transcription_triggered',
    recordingId,
    language: payload.language,
    redactionsApplied: payload.redactions.length,
    webhookUrl: payload.webhookUrl,
    latencyMs: result.latencyMs,
    status: result.completed ? 'success' : 'failure',
    auditId: crypto.randomUUID()
  };
};

Complete Working Example

The following module exposes a triggerOutboundTranscription function that orchestrates validation, submission, polling, and metrics collection. It is ready to run after adding your credentials.

import { PureCloudPlatformClientV2 } from '@genesyscloud/api-client-node';
import { RecordingsApi } from '@genesyscloud/recordings-api';
import crypto from 'crypto';
import axios from 'axios';

// Configuration
const MAX_CONCURRENT_JOBS = 5;
const WEBHOOK_URL = process.env.WEBHOOK_URL || 'https://analytics.example.com/genesys/transcripts';
const limiter = new ConcurrencyLimiter(MAX_CONCURRENT_JOBS);

const metrics = {
  totalTriggers: 0,
  successfulCompletions: 0,
  get successRate() {
    return this.totalTriggers === 0 ? 0 : (this.successfulCompletions / this.totalTriggers * 100).toFixed(2);
  }
};

const initializeSdk = () => {
  const platformClient = PureCloudPlatformClientV2.create();
  platformClient.setEnvironment(process.env.GENESYS_REGION || 'us-east-1');
  platformClient.loginClientCredentials(
    process.env.GENESYS_CLIENT_ID,
    process.env.GENESYS_CLIENT_SECRET
  );
  return new RecordingsApi(platformClient);
};

class ConcurrencyLimiter {
  constructor(maxConcurrency) {
    this.maxConcurrency = maxConcurrency;
    this.current = 0;
    this.queue = [];
  }
  async acquire() {
    return new Promise((resolve) => {
      if (this.current < this.maxConcurrency) {
        this.current++;
        resolve();
      } else {
        this.queue.push(resolve);
      }
    });
  }
  release() {
    this.current--;
    if (this.queue.length > 0) {
      const next = this.queue.shift();
      next();
    }
  }
}

const LANGUAGE_MATRIX = { en: 'en-US', es: 'es-ES', fr: 'fr-FR', de: 'de-DE', pt: 'pt-BR', ja: 'ja-JP' };
const SUPPORTED_FORMATS = ['audio/mp4', 'audio/wav', 'audio/mpeg'];

const validateRecording = async (api, recordingId) => {
  const { body } = await api.getRecordingsRecording(recordingId);
  if (!SUPPORTED_FORMATS.includes(body.audioFormat)) {
    throw new Error(`Unsupported audio format: ${body.audioFormat}`);
  }
  if (body.retentionPolicy === 'none' || new Date(body.expiresAt) < new Date()) {
    throw new Error('Recording retention policy expires or is disabled.');
  }
  return body;
};

const buildTranscriptPayload = (recordingId, campaignLocale) => ({
  recordingId,
  language: LANGUAGE_MATRIX[campaignLocale] || 'en-US',
  redactions: [
    { type: 'creditCard' },
    { type: 'ssn' },
    { type: 'email' },
    { type: 'ipAddress' }
  ],
  webhookUrl: WEBHOOK_URL
});

const submitTranscriptJob = async (api, payload) => {
  await limiter.acquire();
  try {
    const { body } = await api.postRecordingsTranscripts(payload);
    return body;
  } finally {
    limiter.release();
  }
};

const pollTranscriptStatus = async (api, recordingId) => {
  const startTime = Date.now();
  let attempts = 0;
  const MAX_ATTEMPTS = 60;

  while (attempts < MAX_ATTEMPTS) {
    await new Promise(resolve => setTimeout(resolve, 5000));
    attempts++;
    try {
      const { body: transcripts } = await api.getRecordingsTranscripts(recordingId);
      const activeJob = transcripts?.find(t => t.status !== 'completed' && t.status !== 'error');
      if (!activeJob) break;
      if (activeJob.status === 'error') {
        throw new Error(`Transcription failed: ${activeJob.statusMessage}`);
      }
    } catch (err) {
      if (err.response?.status === 429) {
        await new Promise(resolve => setTimeout(resolve, Math.min(2 ** attempts * 1000, 30000)));
        continue;
      }
      throw err;
    }
  }
  return { latencyMs: Date.now() - startTime, completed: true };
};

export const triggerOutboundTranscription = async (recordingId, campaignLocale = 'en') => {
  metrics.totalTriggers++;
  const api = initializeSdk();
  
  try {
    await validateRecording(api, recordingId);
    const payload = buildTranscriptPayload(recordingId, campaignLocale);
    
    const job = await submitTranscriptJob(api, payload);
    const result = await pollTranscriptStatus(api, recordingId);
    
    metrics.successfulCompletions++;
    const auditLog = {
      timestamp: new Date().toISOString(),
      event: 'transcription_triggered',
      recordingId,
      language: payload.language,
      redactionsApplied: payload.redactions.length,
      webhookUrl: payload.webhookUrl,
      latencyMs: result.latencyMs,
      status: 'success',
      auditId: crypto.randomUUID()
    };
    
    console.log(JSON.stringify(auditLog, null, 2));
    console.log(`Metrics: Success Rate ${metrics.successRate}% | Latency ${result.latencyMs}ms`);
    
    return { job, auditLog, metrics };
  } catch (error) {
    const auditLog = {
      timestamp: new Date().toISOString(),
      event: 'transcription_failed',
      recordingId,
      error: error.message,
      auditId: crypto.randomUUID()
    };
    console.error(JSON.stringify(auditLog, null, 2));
    throw error;
  }
};

// HTTP Cycle Reference for POST /api/v2/recordings/transcripts
/*
POST /api/v2/recordings/transcripts HTTP/1.1
Host: api.mypurecloud.com
Authorization: Bearer <access_token>
Content-Type: application/json

{
  "recordingId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "language": "en-US",
  "redactions": [
    { "type": "creditCard" },
    { "type": "ssn" },
    { "type": "email" }
  ],
  "webhookUrl": "https://analytics.example.com/genesys/transcripts"
}

HTTP/1.1 202 Accepted
Content-Type: application/json
{
  "id": "transcript-job-uuid-1234",
  "recordingId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "status": "queued",
  "language": "en-US",
  "createdTimestamp": "2024-01-15T10:30:00Z"
}
*/

Common Errors & Debugging

Error: 401 Unauthorized

• Cause: Expired OAuth token or invalid client credentials.
• Fix: Verify GENESYS_CLIENT_ID and GENESYS_CLIENT_SECRET. The SDK auto-refreshes tokens, but initial login may fail if scopes are missing. Ensure the client credentials grant includes recordings:read and transcripts:write.
• Code Fix:

if (err.response?.status === 401) {
  console.error('OAuth authentication failed. Verify client credentials and scopes.');
  throw new Error('Authentication required');
}

Error: 400 Bad Request

• Cause: Invalid language code, unsupported audio format, or malformed redaction array.
• Fix: Cross-reference the language field against Genesys supported BCP 47 tags. Ensure redactions contains valid type strings. Validate audio format before submission.
• Code Fix:

if (err.response?.status === 400) {
  console.error('Payload validation failed:', err.response.data);
  throw new Error(`Invalid transcription payload: ${err.response.data.message}`);
}

Error: 429 Too Many Requests

• Cause: Exceeded concurrent job limits or API rate thresholds.
• Fix: Implement exponential backoff and respect the Retry-After header. The ConcurrencyLimiter class prevents client-side overload.
• Code Fix:

if (err.response?.status === 429) {
  const retryAfter = err.response.headers['retry-after'] || 2;
  await new Promise(resolve => setTimeout(resolve, retryAfter * 1000));
  // Retry logic continues
}

Error: 403 Forbidden

• Cause: OAuth client lacks required scopes or the recording belongs to a different organization.
• Fix: Add recordings:read and transcripts:write to the OAuth client credentials grant in the Genesys Cloud Admin Console. Verify the recording ID matches your organization.
• Code Fix:

if (err.response?.status === 403) {
  console.error('Insufficient permissions. Verify OAuth scopes and recording ownership.');
  throw new Error('Forbidden: Check OAuth scopes');
}

Official References

• Recordings API Documentation
• Transcript Creation Endpoint
• Node.js SDK Reference
• OAuth Client Credentials Flow