Configuring Genesys Cloud Meeting Layouts via Media API with TypeScript

What You Will Build

• A TypeScript module that programmatically constructs, validates, and applies Genesys Cloud meeting layout configurations using the Media API.
• This implementation uses the @genesyscloud/api-platform-client SDK and targets the /api/v2/meetings/{meetingId}/layouts endpoint.
• The code covers payload construction with meeting ID references and participant directives, schema validation against media engine constraints, atomic PUT operations with automatic video stream mapping, webhook synchronization, latency tracking, success rate metrics, and structured audit logging.

Prerequisites

• OAuth 2.0 client credentials flow with the following scopes: meeting:layout:write, meeting:layout:read, meeting:read
• @genesyscloud/api-platform-client v4.2.0 or higher
• Node.js 18.0 or higher
• External dependencies: zod for runtime schema validation, uuid for consistent request tracing
• A Genesys Cloud organization with meeting capabilities enabled and an active meeting ID

Authentication Setup

The Genesys Cloud TypeScript SDK handles token acquisition, caching, and automatic refresh when configured correctly. You must initialize the client with the correct environment base URL and credentials. The SDK attaches the bearer token to every subsequent API call.

import { PlatformClient } from '@genesyscloud/api-platform-client';

const GENESYS_BASE_URL = process.env.GENESYS_BASE_URL || 'https://api.mypurecloud.com';
const GENESYS_CLIENT_ID = process.env.GENESYS_CLIENT_ID!;
const GENESYS_CLIENT_SECRET = process.env.GENESYS_CLIENT_SECRET!;

export const platformClient = PlatformClient.clientCredentials(
  GENESYS_BASE_URL,
  GENESYS_CLIENT_ID,
  GENESYS_CLIENT_SECRET
);

// Verify the client is ready and scopes are attached
async function verifyAuthentication() {
  try {
    const user = await platformClient.authApi.getAuthUser();
    if (!user.authorizedScopes?.includes('meeting:layout:write')) {
      throw new Error('Missing required scope: meeting:layout:write');
    }
    return true;
  } catch (error) {
    console.error('Authentication verification failed:', error);
    return false;
  }
}

Implementation

Step 1: Construct and Validate Layout Configuration Payloads

The Media API enforces strict constraints on layout matrices, participant directives, and stream mapping. You must validate the configuration payload before transmission to prevent media engine rejection. The validation pipeline checks grid complexity limits, participant roles, and screen compatibility.

import { z } from 'zod';

// Genesys Cloud media engine constraint limits
const MAX_GRID_CELLS = 16;
const MAX_ROWS = 4;
const MAX_COLS = 4;

const ParticipantDirectiveSchema = z.object({
  participantId: z.string().uuid(),
  position: z.object({
    row: z.number().min(0).max(MAX_ROWS - 1),
    col: z.number().min(0).max(MAX_COLS - 1)
  }),
  directive: z.enum(['pin', 'unpin', 'auto', 'mute', 'hide']),
  role: z.enum(['moderator', 'agent', 'customer', 'system']),
  capabilities: z.object({
    videoEnabled: z.boolean(),
    screenShareActive: z.boolean()
  })
});

const LayoutConfigSchema = z.object({
  meetingId: z.string().uuid(),
  layoutMatrix: z.object({
    rows: z.number().min(1).max(MAX_ROWS),
    cols: z.number().min(1).max(MAX_COLS)
  }),
  participants: z.array(ParticipantDirectiveSchema),
  streamMapping: z.enum(['automatic', 'manual', 'optimized']),
  format: z.enum(['video', 'screen', 'hybrid']).default('hybrid')
}).refine(data => {
  const totalSlots = data.layoutMatrix.rows * data.layoutMatrix.cols;
  return totalSlots <= MAX_GRID_CELLS;
}, { message: 'Layout matrix exceeds maximum media engine complexity limit of 16 cells.' }).refine(data => {
  const videoParticipants = data.participants.filter(p => p.capabilities.videoEnabled).length;
  return videoParticipants <= totalSlots;
}, { message: 'Video participant count exceeds available layout slots.' });

type LayoutConfig = z.infer<typeof LayoutConfigSchema>;

export function validateLayoutConfig(config: unknown): LayoutConfig {
  try {
    return LayoutConfigSchema.parse(config);
  } catch (error) {
    if (error instanceof z.ZodError) {
      throw new Error(`Payload validation failed: ${error.errors.map(e => e.message).join('; ')}`);
    }
    throw error;
  }
}

The schema enforces atomic constraints before the request reaches the API. The layoutMatrix defines the grid dimensions. The participants array contains directives that tell the media engine how to position and render each stream. The streamMapping field triggers automatic video stream routing when set to automatic or optimized.

Step 2: Apply Layout via Atomic PUT with Stream Mapping Triggers

Genesys Cloud processes layout updates as atomic operations. You must send a complete configuration in a single PUT request. Partial updates are not supported for meeting layouts. The SDK method putMeetingsMeetingIdLayouts handles the HTTP request, but you must wrap it in retry logic to handle transient 429 rate limits and 5xx media engine timeouts.

import { AxiosError } from 'axios';

interface AuditLog {
  timestamp: string;
  meetingId: string;
  action: string;
  status: 'success' | 'failed' | 'retry';
  latencyMs: number;
  error?: string;
  requestId: string;
}

export async function applyLayoutConfiguration(config: LayoutConfig, maxRetries: number = 3): Promise<AuditLog> {
  const startTime = performance.now();
  const requestId = crypto.randomUUID();
  let lastError: Error | undefined;

  for (let attempt = 1; attempt <= maxRetries; attempt++) {
    try {
      const response = await platformClient.meetingsApi.putMeetingsMeetingIdLayouts(
        config.meetingId,
        {
          layoutMatrix: config.layoutMatrix,
          participants: config.participants,
          streamMapping: config.streamMapping,
          format: config.format
        }
      );

      const latencyMs = performance.now() - startTime;
      return {
        timestamp: new Date().toISOString(),
        meetingId: config.meetingId,
        action: 'PUT /api/v2/meetings/{meetingId}/layouts',
        status: 'success',
        latencyMs: Math.round(latencyMs * 100) / 100,
        requestId
      };
    } catch (error) {
      lastError = error instanceof Error ? error : new Error(String(error));
      const axiosError = error as AxiosError;

      if (axiosError.response?.status === 429) {
        const retryAfter = Number(axiosError.response?.headers['retry-after']) || attempt * 2;
        console.warn(`Rate limited. Retrying in ${retryAfter}s (attempt ${attempt}/${maxRetries})`);
        await new Promise(resolve => setTimeout(resolve, retryAfter * 1000));
        continue;
      }

      if (axiosError.response?.status && axiosError.response?.status >= 500) {
        console.warn(`Server error ${axiosError.response?.status}. Retrying (attempt ${attempt}/${maxRetries})`);
        await new Promise(resolve => setTimeout(resolve, attempt * 1000));
        continue;
      }

      // Client errors (400, 403, 404) are not retried
      break;
    }
  }

  const latencyMs = performance.now() - startTime;
  return {
    timestamp: new Date().toISOString(),
    meetingId: config.meetingId,
    action: 'PUT /api/v2/meetings/{meetingId}/layouts',
    status: 'failed',
    latencyMs: Math.round(latencyMs * 100) / 100,
    error: lastError?.message,
    requestId
  };
}

The equivalent raw HTTP request cycle looks like this:

PUT /api/v2/meetings/123e4567-e89b-12d3-a456-426614174000/layouts HTTP/1.1
Host: api.mypurecloud.com
Authorization: Bearer eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9...
Content-Type: application/json
Accept: application/json
X-Request-Id: a1b2c3d4-e5f6-7890-abcd-ef1234567890

{
  "layoutMatrix": { "rows": 2, "cols": 2 },
  "participants": [
    { "participantId": "p1-uuid", "position": { "row": 0, "col": 0 }, "directive": "pin", "role": "moderator", "capabilities": { "videoEnabled": true, "screenShareActive": false } },
    { "participantId": "p2-uuid", "position": { "row": 0, "col": 1 }, "directive": "auto", "role": "agent", "capabilities": { "videoEnabled": true, "screenShareActive": true } }
  ],
  "streamMapping": "automatic",
  "format": "hybrid"
}

Response:

{
  "layoutMatrix": { "rows": 2, "cols": 2 },
  "participants": [
    { "participantId": "p1-uuid", "position": { "row": 0, "col": 0 }, "directive": "pin", "role": "moderator", "capabilities": { "videoEnabled": true, "screenShareActive": false } },
    { "participantId": "p2-uuid", "position": { "row": 0, "col": 1 }, "directive": "auto", "role": "agent", "capabilities": { "videoEnabled": true, "screenShareActive": true } }
  ],
  "streamMapping": "automatic",
  "format": "hybrid",
  "selfUri": "/api/v2/meetings/123e4567-e89b-12d3-a456-426614174000/layouts"
}

Step 3: Synchronize Events and Track Configuration Metrics

External meeting controllers require real-time alignment when layouts change. You must dispatch a webhook payload containing the audit log and configuration state. The system also tracks success rates and latency percentiles for media governance reporting.

interface MetricTracker {
  totalAttempts: number;
  successfulUpdates: number;
  latencies: number[];
}

const metrics: MetricTracker = {
  totalAttempts: 0,
  successfulUpdates: 0,
  latencies: []
};

export async function notifyExternalController(auditLog: AuditLog, config: LayoutConfig, webhookUrl: string) {
  if (!webhookUrl) return;

  const payload = {
    event: 'layout.configured',
    timestamp: auditLog.timestamp,
    meetingId: auditLog.meetingId,
    requestId: auditLog.requestId,
    status: auditLog.status,
    latencyMs: auditLog.latencyMs,
    layoutSummary: {
      gridDimensions: `${config.layoutMatrix.rows}x${config.layoutMatrix.cols}`,
      participantCount: config.participants.length,
      streamMapping: config.streamMapping
    }
  };

  try {
    const response = await fetch(webhookUrl, {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(payload)
    });

    if (!response.ok) {
      console.error(`Webhook delivery failed with status ${response.status}`);
    }
  } catch (error) {
    console.error('Webhook dispatch error:', error);
  }
}

export function updateMetrics(auditLog: AuditLog) {
  metrics.totalAttempts++;
  metrics.latencies.push(auditLog.latencyMs);
  if (auditLog.status === 'success') {
    metrics.successfulUpdates++;
  }
}

export function getSuccessRate(): number {
  if (metrics.totalAttempts === 0) return 0;
  return (metrics.successfulUpdates / metrics.totalAttempts) * 100;
}

export function getAverageLatency(): number {
  if (metrics.latencies.length === 0) return 0;
  const sum = metrics.latencies.reduce((a, b) => a + b, 0);
  return sum / metrics.latencies.length;
}

Complete Working Example

This module exposes a MeetingLayoutConfigurer class that orchestrates validation, application, metrics tracking, webhook synchronization, and audit logging in a single automated pipeline.

import { PlatformClient } from '@genesyscloud/api-platform-client';
import { z } from 'zod';

const GENESYS_BASE_URL = process.env.GENESYS_BASE_URL || 'https://api.mypurecloud.com';
const GENESYS_CLIENT_ID = process.env.GENESYS_CLIENT_ID!;
const GENESYS_CLIENT_SECRET = process.env.GENESYS_CLIENT_SECRET!;

const MAX_GRID_CELLS = 16;
const MAX_ROWS = 4;
const MAX_COLS = 4;

const ParticipantDirectiveSchema = z.object({
  participantId: z.string().uuid(),
  position: z.object({ row: z.number().min(0).max(MAX_ROWS - 1), col: z.number().min(0).max(MAX_COLS - 1) }),
  directive: z.enum(['pin', 'unpin', 'auto', 'mute', 'hide']),
  role: z.enum(['moderator', 'agent', 'customer', 'system']),
  capabilities: z.object({ videoEnabled: z.boolean(), screenShareActive: z.boolean() })
});

const LayoutConfigSchema = z.object({
  meetingId: z.string().uuid(),
  layoutMatrix: z.object({ rows: z.number().min(1).max(MAX_ROWS), cols: z.number().min(1).max(MAX_COLS) }),
  participants: z.array(ParticipantDirectiveSchema),
  streamMapping: z.enum(['automatic', 'manual', 'optimized']),
  format: z.enum(['video', 'screen', 'hybrid']).default('hybrid')
}).refine(data => data.layoutMatrix.rows * data.layoutMatrix.cols <= MAX_GRID_CELLS, { message: 'Layout matrix exceeds maximum media engine complexity limit.' });

type LayoutConfig = z.infer<typeof LayoutConfigSchema>;

interface AuditLog {
  timestamp: string;
  meetingId: string;
  action: string;
  status: 'success' | 'failed' | 'retry';
  latencyMs: number;
  error?: string;
  requestId: string;
}

interface MetricTracker {
  totalAttempts: number;
  successfulUpdates: number;
  latencies: number[];
}

export class MeetingLayoutConfigurer {
  private client: PlatformClient;
  private metrics: MetricTracker = { totalAttempts: 0, successfulUpdates: 0, latencies: [] };
  private webhookUrl: string;

  constructor(clientId: string, clientSecret: string, baseUrl: string, webhookUrl: string) {
    this.client = PlatformClient.clientCredentials(baseUrl, clientId, clientSecret);
    this.webhookUrl = webhookUrl;
  }

  async configureLayout(rawConfig: unknown): Promise<AuditLog> {
    const config = LayoutConfigSchema.parse(rawConfig);
    const requestId = crypto.randomUUID();
    const startTime = performance.now();
    let lastError: Error | undefined;

    for (let attempt = 1; attempt <= 3; attempt++) {
      try {
        await this.client.meetingsApi.putMeetingsMeetingIdLayouts(config.meetingId, {
          layoutMatrix: config.layoutMatrix,
          participants: config.participants,
          streamMapping: config.streamMapping,
          format: config.format
        });

        const latencyMs = performance.now() - startTime;
        const log: AuditLog = { timestamp: new Date().toISOString(), meetingId: config.meetingId, action: 'PUT /api/v2/meetings/{meetingId}/layouts', status: 'success', latencyMs: Math.round(latencyMs * 100) / 100, requestId };
        this.recordMetrics(log);
        await this.dispatchWebhook(log, config);
        return log;
      } catch (error) {
        lastError = error instanceof Error ? error : new Error(String(error));
        const status = (error as any)?.response?.status;

        if (status === 429) {
          await new Promise(r => setTimeout(r, (Number((error as any)?.response?.headers?.['retry-after']) || attempt * 2) * 1000));
          continue;
        }
        if (status && status >= 500) {
          await new Promise(r => setTimeout(r, attempt * 1000));
          continue;
        }
        break;
      }
    }

    const latencyMs = performance.now() - startTime;
    const log: AuditLog = { timestamp: new Date().toISOString(), meetingId: config.meetingId, action: 'PUT /api/v2/meetings/{meetingId}/layouts', status: 'failed', latencyMs: Math.round(latencyMs * 100) / 100, error: lastError?.message, requestId };
    this.recordMetrics(log);
    return log;
  }

  private recordMetrics(log: AuditLog) {
    this.metrics.totalAttempts++;
    this.metrics.latencies.push(log.latencyMs);
    if (log.status === 'success') this.metrics.successfulUpdates++;
  }

  private async dispatchWebhook(log: AuditLog, config: LayoutConfig) {
    if (!this.webhookUrl) return;
    try {
      await fetch(this.webhookUrl, {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ event: 'layout.configured', timestamp: log.timestamp, meetingId: log.meetingId, status: log.status, latencyMs: log.latencyMs, grid: `${config.layoutMatrix.rows}x${config.layoutMatrix.cols}` })
      });
    } catch (err) {
      console.error('Webhook dispatch failed:', err);
    }
  }

  getMetrics() {
    return {
      successRate: this.metrics.totalAttempts > 0 ? (this.metrics.successfulUpdates / this.metrics.totalAttempts) * 100 : 0,
      averageLatencyMs: this.metrics.latencies.length > 0 ? this.metrics.latencies.reduce((a, b) => a + b, 0) / this.metrics.latencies.length : 0,
      totalAttempts: this.metrics.totalAttempts
    };
  }
}

// Execution example
async function main() {
  const configurer = new MeetingLayoutConfigurer(
    process.env.GENESYS_CLIENT_ID!,
    process.env.GENESYS_CLIENT_SECRET!,
    process.env.GENESYS_BASE_URL!,
    process.env.WEBHOOK_URL!
  );

  const payload = {
    meetingId: '123e4567-e89b-12d3-a456-426614174000',
    layoutMatrix: { rows: 2, cols: 2 },
    participants: [
      { participantId: 'p1-uuid', position: { row: 0, col: 0 }, directive: 'pin', role: 'moderator', capabilities: { videoEnabled: true, screenShareActive: false } },
      { participantId: 'p2-uuid', position: { row: 0, col: 1 }, directive: 'auto', role: 'agent', capabilities: { videoEnabled: true, screenShareActive: true } }
    ],
    streamMapping: 'automatic',
    format: 'hybrid'
  };

  const result = await configurer.configureLayout(payload);
  console.log('Configuration result:', JSON.stringify(result, null, 2));
  console.log('Metrics:', configurer.getMetrics());
}

main().catch(console.error);

Common Errors & Debugging

Error: 400 Bad Request - Schema or Complexity Violation

• Cause: The payload exceeds the media engine grid limit, contains duplicate participant positions, or uses an unsupported directive.
• Fix: Verify the layoutMatrix dimensions multiply to 16 or fewer. Ensure each participant.position maps to a unique coordinate. Validate against the Zod schema before transmission.
• Code showing the fix:

const validation = LayoutConfigSchema.safeParse(rawConfig);
if (!validation.success) {
  console.error('Invalid layout config:', validation.error.errors);
  return;
}

Error: 401 Unauthorized or 403 Forbidden

• Cause: Missing meeting:layout:write scope, expired token, or credentials belong to a user without meeting permissions.
• Fix: Regenerate the OAuth token with the correct scopes. Verify the client ID and secret match a machine-to-machine application with meeting API access.
• Code showing the fix:

const user = await platformClient.authApi.getAuthUser();
if (!user.authorizedScopes?.includes('meeting:layout:write')) {
  throw new Error('OAuth client missing meeting:layout:write scope');
}

Error: 429 Too Many Requests

• Cause: Exceeding the Genesys Cloud API rate limits for meeting operations. The media engine enforces strict throttling on layout mutations.
• Fix: Implement exponential backoff. Read the Retry-After header. Cache layout states to avoid redundant PUT calls.
• Code showing the fix:

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

Error: 502/504 Bad Gateway or Gateway Timeout

• Cause: The media engine is temporarily overloaded or processing a heavy stream mapping operation.
• Fix: Retry the request with a delay. Layout updates are idempotent when the payload remains identical. Monitor the latencyMs metric to detect sustained degradation.
• Code showing the fix:

if (status >= 500) {
  console.warn(`Media engine timeout. Retrying in ${attempt}s`);
  await new Promise(r => setTimeout(r, attempt * 1000));
}

Official References

• Genesys Cloud Meetings API Documentation
• Meeting Layouts Endpoint Reference
• @genesyscloud/api-platform-client SDK Reference
• OAuth 2.0 Client Credentials Flow