Whitelisting Genesys Cloud EventBridge API Source IPs via Security API with TypeScript

What You Will Build

• This tutorial builds a TypeScript module that programmatically creates, validates, and updates IP allowlists for Genesys Cloud outbound EventBridge webhook destinations.
• It uses the Genesys Cloud Security API (/api/v2/security/ipaddresses) and the official purecloud-platform-client-v2 SDK.
• The implementation is written in modern TypeScript with async/await, explicit CIDR normalization, subnet overlap detection, atomic PUT execution, webhook synchronization, and structured audit logging.

Prerequisites

• OAuth service account with security:ipaddress:read and security:ipaddress:write scopes
• SDK version: @genesyscloud/purecloud-platform-client-v2@^2.0.0
• Runtime: Node.js 18+
• External dependencies: axios, ipaddr.js, uuid, geoip-lite
• Genesys Cloud organization ID and region endpoint (e.g., https://api.mypurecloud.com)

Authentication Setup

Genesys Cloud uses OAuth 2.0 client credentials flow for server-to-server integrations. The SDK handles token caching and automatic refresh, but you must initialize the AuthApi correctly and configure the platform client to use the authenticated session.

import { PlatformClient, AuthApi, SecurityApi } from '@genesyscloud/purecloud-platform-client-v2';

async function initializeAuthenticatedClient(
  clientId: string,
  clientSecret: string,
  environment: string = 'https://api.mypurecloud.com'
): Promise<PlatformClient> {
  const client = new PlatformClient();
  await client.setEnvironment(environment);

  const authApi = new AuthApi(client);
  const authRequestBody = {
    grant_type: 'client_credentials',
    client_id: clientId,
    client_secret: clientSecret,
    scope: 'security:ipaddress:read security:ipaddress:write'
  };

  try {
    await authApi.postOAuthToken(authRequestBody);
    console.log('OAuth token acquired and cached by SDK');
  } catch (error: any) {
    if (error.status === 401) {
      throw new Error('Authentication failed: invalid client credentials or scope mismatch');
    }
    throw error;
  }

  return client;
}

The SDK stores the access token in memory and automatically appends it to subsequent requests. When the token expires, the SDK triggers a silent refresh using the cached refresh token. You do not need to implement manual token rotation unless you are running in a stateless container environment, in which case you should persist the token to a secrets manager.

Implementation

Step 1: Fetch Existing Allowlist and Enforce Maximum Rule Count Limits

Before constructing new whitelist entries, you must retrieve the current IP address configuration. Genesys Cloud enforces organizational limits on the number of allowed IP rules. The Security API returns paginated results, so you must iterate through all pages to build a complete inventory.

import { SecurityApi, GetSecurityIpaddressesOptions } from '@genesyscloud/purecloud-platform-client-v2';

async function fetchCurrentIpAddresses(securityApi: SecurityApi): Promise<any[]> {
  const allAddresses: any[] = [];
  let nextPage = true;
  const options: GetSecurityIpaddressesOptions = {
    pageSize: 50,
    pageNumber: 1
  };

  while (nextPage) {
    try {
      const response = await securityApi.getSecurityIpaddresses(options);
      if (response.entities) {
        allAddresses.push(...response.entities);
      }
      nextPage = response.nextPageCursor ? true : false;
      options.pageCursor = response.nextPageCursor || undefined;
    } catch (error: any) {
      if (error.status === 429) {
        const retryAfter = parseInt(error.headers['retry-after'] || '5', 10);
        console.warn(`Rate limited. Retrying in ${retryAfter} seconds...`);
        await new Promise(resolve => setTimeout(resolve, retryAfter * 1000));
        continue;
      }
      throw error;
    }
  }

  return allAddresses;
}

async function validateRuleCountLimit(currentAddresses: any[], newCount: number, maxAllowed: number = 500): Promise<void> {
  const projectedTotal = currentAddresses.length + newCount;
  if (projectedTotal > maxAllowed) {
    throw new Error(`Whitelist schema violation: projected total ${projectedTotal} exceeds security engine maximum of ${maxAllowed}`);
  }
}

HTTP Equivalent:

GET /api/v2/security/ipaddresses?pageSize=50&pageNumber=1 HTTP/1.1
Authorization: Bearer <access_token>
Host: api.mypurecloud.com
Accept: application/json

HTTP/1.1 200 OK
Content-Type: application/json
{
  "entities": [
    {
      "id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
      "name": "Legacy-Webhook-Range",
      "ipAddress": "198.51.100.0/24",
      "description": "Existing allowlist entry",
      "source": "api",
      "selfUri": "/api/v2/security/ipaddresses/a1b2c3d4-e5f6-7890-abcd-ef1234567890"
    }
  ],
  "pageNumber": 1,
  "pageSize": 50,
  "total": 1
}

Step 2: Construct Whitelist Payloads with CIDR Normalization and Format Verification

You must normalize all IP inputs to valid CIDR notation before submission. The Security API rejects malformed ranges. This step implements automatic CIDR normalization, constructs the allow directive payload, and attaches IP ID references for tracking.

import ipaddr from 'ipaddr.js';
import { v4 as uuidv4 } from 'uuid';

interface WhitelistEntry {
  id: string;
  name: string;
  ipAddress: string;
  description: string;
  source: string;
}

function normalizeCidr(input: string): string {
  const parts = input.split('/');
  if (parts.length === 1) {
    const addr = ipaddr.parse(input);
    return `${addr.toString()}/${addr.kind() === 'ipv4' ? 32 : 128}`;
  }
  const [addr, prefix] = parts;
  const normalizedAddr = ipaddr.parse(addr).toString();
  const prefixNum = parseInt(prefix, 10);
  if (isNaN(prefixNum) || prefixNum < 0) {
    throw new Error(`Invalid CIDR prefix: ${prefix}`);
  }
  return `${normalizedAddr}/${prefixNum}`;
}

function constructWhitelistPayloads(rawInputs: Array<{ name: string; range: string; description: string }>): WhitelistEntry[] {
  return rawInputs.map(input => ({
    id: uuidv4(),
    name: input.name,
    ipAddress: normalizeCidr(input.range),
    description: input.description,
    source: 'api'
  }));
}

The normalizeCidr function triggers automatic CIDR normalization. It ensures that single IPs expand to /32 or /128, and that all octets are properly formatted. This prevents the Security API from returning 400 Bad Request due to malformed network blocks.

Step 3: Subnet Overlap Checking and Geolocation Verification Pipelines

Before applying the whitelist, you must verify that new ranges do not overlap with existing entries. Overlapping subnets cause ambiguous routing rules in the Genesys Cloud security engine. You also verify geolocation to ensure compliance with regional data residency requirements.

import geoip from 'geoip-lite';

function checkSubnetOverlap(newCidr: string, existingAddresses: WhitelistEntry[]): boolean {
  const newRange = ipaddr.parseCIDR(newCidr);
  for (const existing of existingAddresses) {
    const existingRange = ipaddr.parseCIDR(existing.ipAddress);
    if (newRange[0].kind() !== existingRange[0].kind()) continue;
    
    const newMatch = ipaddr.subnetMatch(newRange[0], [['0.0.0.0/0', 'default']]);
    const existingMatch = ipaddr.subnetMatch(existingRange[0], [['0.0.0.0/0', 'default']]);
    
    if (ipaddr.subnetMatch(newRange[0], [[existing.ipAddress, 'overlap']]) !== 'default') {
      return true;
    }
  }
  return false;
}

async function verifyGeolocation(cidr: string, allowedCountries: string[]): Promise<boolean> {
  const baseIp = cidr.split('/')[0];
  const geo = geoip.lookup(baseIp);
  if (!geo) return false;
  return allowedCountries.includes(geo.country);
}

async function validateSecurityConstraints(
  newEntries: WhitelistEntry[],
  existingAddresses: WhitelistEntry[],
  allowedCountries: string[] = ['US', 'DE', 'GB', 'JP']
): Promise<void> {
  for (const entry of newEntries) {
    if (checkSubnetOverlap(entry.ipAddress, existingAddresses)) {
      throw new Error(`Subnet overlap detected: ${entry.ipAddress} conflicts with existing allowlist`);
    }
    const isAllowedRegion = await verifyGeolocation(entry.ipAddress, allowedCountries);
    if (!isAllowedRegion) {
      throw new Error(`Geolocation verification failed: ${entry.ipAddress} originates outside allowed regions`);
    }
  }
}

This pipeline rejects payloads that intersect with active rules or originate from unauthorized jurisdictions. The ipaddr.js library handles IPv4/IPv6 comparison logic natively, eliminating manual bitwise calculations.

Step 4: Atomic PUT Execution, Webhook Synchronization, and Audit Logging

You apply the whitelist using atomic PUT operations. Each entry is updated or created independently. The system tracks latency, records success/failure rates, synchronizes with external firewall managers via webhook, and generates structured audit logs for security governance.

import axios from 'axios';

interface AuditLog {
  timestamp: string;
  action: string;
  entryId: string;
  ipAddress: string;
  latencyMs: number;
  status: 'success' | 'failed';
  statusCode?: number;
  error?: string;
}

async function applyWhitelistAtomic(
  securityApi: SecurityApi,
  entries: WhitelistEntry[],
  webhookUrl: string,
  auditLogs: AuditLog[]
): Promise<void> {
  for (const entry of entries) {
    const startTime = performance.now();
    let status: 'success' | 'failed' = 'failed';
    let statusCode: number | undefined;
    let error: string | undefined;

    try {
      const putPayload = {
        id: entry.id,
        name: entry.name,
        ipAddress: entry.ipAddress,
        description: entry.description,
        source: entry.source
      };

      await securityApi.putSecurityIpaddress(entry.id, putPayload);
      status = 'success';
      statusCode = 200;

      await axios.post(webhookUrl, {
        event: 'ip_whitelisted',
        payload: { id: entry.id, range: entry.ipAddress, timestamp: new Date().toISOString() }
      }, { timeout: 5000 });

    } catch (err: any) {
      statusCode = err.status || 500;
      error = err.message || 'Unknown PUT failure';
      if (err.status === 429) {
        const retryAfter = parseInt(err.headers['retry-after'] || '2', 10);
        await new Promise(resolve => setTimeout(resolve, retryAfter * 1000));
        try {
          await securityApi.putSecurityIpaddress(entry.id, {
            id: entry.id,
            name: entry.name,
            ipAddress: entry.ipAddress,
            description: entry.description,
            source: entry.source
          });
          status = 'success';
          statusCode = 200;
          error = undefined;
        } catch (retryErr: any) {
          error = retryErr.message;
        }
      }
    }

    const latency = performance.now() - startTime;
    auditLogs.push({
      timestamp: new Date().toISOString(),
      action: 'PUT_SECURITY_IPADDRESS',
      entryId: entry.id,
      ipAddress: entry.ipAddress,
      latencyMs: Math.round(latency),
      status,
      statusCode,
      error
    });
  }
}

HTTP Equivalent for Atomic PUT:

PUT /api/v2/security/ipaddresses/a1b2c3d4-e5f6-7890-abcd-ef1234567890 HTTP/1.1
Authorization: Bearer <access_token>
Host: api.mypurecloud.com
Content-Type: application/json
Accept: application/json

{
  "id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "name": "EventBridge-Source-Range-01",
  "ipAddress": "203.0.113.0/24",
  "description": "Allowlisted for EventBridge event ingestion",
  "source": "api"
}

HTTP/1.1 200 OK
Content-Type: application/json
{
  "id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "name": "EventBridge-Source-Range-01",
  "ipAddress": "203.0.113.0/24",
  "description": "Allowlisted for EventBridge event ingestion",
  "source": "api",
  "selfUri": "/api/v2/security/ipaddresses/a1b2c3d4-e5f6-7890-abcd-ef1234567890"
}

The PUT operation is atomic at the resource level. If the payload fails validation, the entire entry is rejected without partial writes. The retry logic handles 429 rate limits gracefully. The webhook POST synchronizes the allowlist state with external firewall managers. The audit log captures latency, status codes, and errors for compliance reporting.

Complete Working Example

The following module combines all steps into a single, runnable TypeScript class. Replace the environment variables with your Genesys Cloud credentials.

import { PlatformClient, AuthApi, SecurityApi } from '@genesyscloud/purecloud-platform-client-v2';
import axios from 'axios';
import ipaddr from 'ipaddr.js';
import { v4 as uuidv4 } from 'uuid';
import geoip from 'geoip-lite';

interface WhitelistEntry {
  id: string;
  name: string;
  ipAddress: string;
  description: string;
  source: string;
}

interface AuditLog {
  timestamp: string;
  action: string;
  entryId: string;
  ipAddress: string;
  latencyMs: number;
  status: 'success' | 'failed';
  statusCode?: number;
  error?: string;
}

export class EventBridgeIpWhitelister {
  private securityApi: SecurityApi;
  private webhookUrl: string;

  constructor(client: PlatformClient, webhookUrl: string) {
    this.securityApi = new SecurityApi(client);
    this.webhookUrl = webhookUrl;
  }

  private normalizeCidr(input: string): string {
    const parts = input.split('/');
    if (parts.length === 1) {
      const addr = ipaddr.parse(input);
      return `${addr.toString()}/${addr.kind() === 'ipv4' ? 32 : 128}`;
    }
    const [addr, prefix] = parts;
    const normalizedAddr = ipaddr.parse(addr).toString();
    const prefixNum = parseInt(prefix, 10);
    if (isNaN(prefixNum) || prefixNum < 0) throw new Error(`Invalid CIDR prefix: ${prefix}`);
    return `${normalizedAddr}/${prefixNum}`;
  }

  private checkSubnetOverlap(newCidr: string, existingAddresses: WhitelistEntry[]): boolean {
    const newRange = ipaddr.parseCIDR(newCidr);
    for (const existing of existingAddresses) {
      const existingRange = ipaddr.parseCIDR(existing.ipAddress);
      if (newRange[0].kind() !== existingRange[0].kind()) continue;
      if (ipaddr.subnetMatch(newRange[0], [[existing.ipAddress, 'overlap']]) !== 'default') {
        return true;
      }
    }
    return false;
  }

  async execute(rawInputs: Array<{ name: string; range: string; description: string }>, allowedCountries: string[] = ['US', 'DE', 'GB', 'JP']): Promise<AuditLog[]> {
    const existing = await this.fetchCurrentIpAddresses();
    const newEntries: WhitelistEntry[] = rawInputs.map(input => ({
      id: uuidv4(),
      name: input.name,
      ipAddress: this.normalizeCidr(input.range),
      description: input.description,
      source: 'api'
    }));

    await this.validateRuleCountLimit(existing, newEntries.length);
    await this.validateSecurityConstraints(newEntries, existing, allowedCountries);

    const auditLogs: AuditLog[] = [];
    await this.applyWhitelistAtomic(newEntries, auditLogs);
    return auditLogs;
  }

  private async fetchCurrentIpAddresses(): Promise<WhitelistEntry[]> {
    const allAddresses: WhitelistEntry[] = [];
    let nextPage = true;
    const options = { pageSize: 50, pageNumber: 1 };

    while (nextPage) {
      try {
        const response = await this.securityApi.getSecurityIpaddresses(options as any);
        if (response.entities) allAddresses.push(...response.entities);
        nextPage = !!response.nextPageCursor;
        options.pageCursor = response.nextPageCursor;
      } catch (error: any) {
        if (error.status === 429) {
          await new Promise(resolve => setTimeout(resolve, (parseInt(error.headers['retry-after'] || '5', 10) * 1000)));
          continue;
        }
        throw error;
      }
    }
    return allAddresses;
  }

  private async validateRuleCountLimit(current: WhitelistEntry[], newCount: number, maxAllowed: number = 500): Promise<void> {
    if (current.length + newCount > maxAllowed) {
      throw new Error(`Whitelist schema violation: projected total exceeds security engine maximum of ${maxAllowed}`);
    }
  }

  private async validateSecurityConstraints(newEntries: WhitelistEntry[], existing: WhitelistEntry[], allowedCountries: string[]): Promise<void> {
    for (const entry of newEntries) {
      if (this.checkSubnetOverlap(entry.ipAddress, existing)) {
        throw new Error(`Subnet overlap detected: ${entry.ipAddress} conflicts with existing allowlist`);
      }
      const baseIp = entry.ipAddress.split('/')[0];
      const geo = geoip.lookup(baseIp);
      if (!geo || !allowedCountries.includes(geo.country)) {
        throw new Error(`Geolocation verification failed: ${entry.ipAddress} originates outside allowed regions`);
      }
    }
  }

  private async applyWhitelistAtomic(entries: WhitelistEntry[], auditLogs: AuditLog[]): Promise<void> {
    for (const entry of entries) {
      const startTime = performance.now();
      let status: 'success' | 'failed' = 'failed';
      let statusCode: number | undefined;
      let error: string | undefined;

      try {
        await this.securityApi.putSecurityIpaddress(entry.id, entry);
        status = 'success';
        statusCode = 200;
        await axios.post(this.webhookUrl, { event: 'ip_whitelisted', payload: { id: entry.id, range: entry.ipAddress } }, { timeout: 5000 });
      } catch (err: any) {
        statusCode = err.status || 500;
        error = err.message;
        if (err.status === 429) {
          await new Promise(resolve => setTimeout(resolve, (parseInt(err.headers['retry-after'] || '2', 10) * 1000)));
          try {
            await this.securityApi.putSecurityIpaddress(entry.id, entry);
            status = 'success';
            statusCode = 200;
            error = undefined;
          } catch (retryErr: any) {
            error = retryErr.message;
          }
        }
      }

      auditLogs.push({
        timestamp: new Date().toISOString(),
        action: 'PUT_SECURITY_IPADDRESS',
        entryId: entry.id,
        ipAddress: entry.ipAddress,
        latencyMs: Math.round(performance.now() - startTime),
        status,
        statusCode,
        error
      });
    }
  }
}

// Usage
(async () => {
  const client = new PlatformClient();
  await client.setEnvironment('https://api.mypurecloud.com');
  const authApi = new AuthApi(client);
  await authApi.postOAuthToken({
    grant_type: 'client_credentials',
    client_id: process.env.GENESYS_CLIENT_ID!,
    client_secret: process.env.GENESYS_CLIENT_SECRET!,
    scope: 'security:ipaddress:read security:ipaddress:write'
  });

  const whitelister = new EventBridgeIpWhitelister(client, 'https://firewall-manager.internal/api/sync');
  const logs = await whitelister.execute([
    { name: 'EventBridge-Primary', range: '203.0.113.0/24', description: 'Primary EventBridge source' },
    { name: 'EventBridge-Secondary', range: '198.51.100.5', description: 'Secondary EventBridge source' }
  ]);
  console.log(JSON.stringify(logs, null, 2));
})();

Common Errors & Debugging

Error: 401 Unauthorized

• What causes it: Invalid client credentials, expired token, or missing security:ipaddress:read/security:ipaddress:write scopes.
• How to fix it: Verify the service account credentials in the Genesys Cloud admin console. Ensure the OAuth request includes both read and write scopes. The SDK caches tokens, so restarting the process clears stale credentials.
• Code showing the fix:

try {
  await authApi.postOAuthToken({ grant_type: 'client_credentials', client_id, client_secret, scope: 'security:ipaddress:read security:ipaddress:write' });
} catch (err: any) {
  if (err.status === 401) console.error('Credential mismatch or scope restriction detected');
  throw err;
}

Error: 403 Forbidden

• What causes it: The service account lacks organizational security permissions, or the target IP range violates regional compliance rules enforced by the platform.
• How to fix it: Assign the Security Administrator role to the OAuth service account. Verify that the geolocation pipeline matches your organization data residency policy.
• Code showing the fix:

if (err.status === 403) {
  console.warn('Access denied: verify Security Administrator role assignment');
  throw new Error('Organization policy restriction blocks IP allowlist modification');
}

Error: 429 Too Many Requests

• What causes it: Exceeding the Genesys Cloud API rate limit (typically 50 requests per second per client, with burst allowances).
• How to fix it: Implement exponential backoff with jitter. The SDK does not auto-retry 429s, so you must parse the Retry-After header and delay execution.
• Code showing the fix:

if (err.status === 429) {
  const delay = parseInt(err.headers['retry-after'] || '5', 10) * 1000;
  await new Promise(resolve => setTimeout(resolve, delay + Math.random() * 500));
  return retryFunction();
}

Error: 400 Bad Request

• What causes it: Malformed CIDR notation, duplicate IP IDs, or overlapping subnets that bypass client-side validation.
• How to fix it: Run the normalizeCidr function before submission. Ensure UUID generation is unique per execution context. Validate subnet overlap against the live allowlist before issuing PUT requests.
• Code showing the fix:

const normalized = normalizeCidr(input.range);
if (ipaddr.isValid(normalized)) {
  await securityApi.putSecurityIpaddress(id, { id, ipAddress: normalized, name, description, source: 'api' });
} else {
  throw new Error('CIDR normalization failed: invalid network block');
}

Official References

• Genesys Cloud Security API Documentation
• purecloud-platform-client-v2 TypeScript SDK
• OAuth 2.0 Client Credentials Flow
• ipaddr.js Reference
• GeoIP-Lite Node Reference