Dynamically Assigning Agent Skills Based on Customer Tier via Genesys Cloud Routing API and EventBridge

What You Will Build

• A Java microservice that consumes interaction.routed events from AWS EventBridge, extracts the customer tier from the interaction payload, and updates the assigned agent skill levels using the Genesys Cloud Routing API.
• This implementation uses the official Genesys Cloud CX Java SDK and the PUT /api/v2/routing/users/{userId}/skills endpoint.
• The tutorial covers Java 17 with Spring Boot 3, Jackson for JSON parsing, and production grade token caching and rate limit handling.

Prerequisites

• OAuth client credentials with the routing:skill:update scope
• Genesys Cloud Java SDK version 16.0.0 or higher
• Java 17 runtime, Maven or Gradle build tool, Spring Boot 3.2.0 or higher
• com.fasterxml.jackson.core:jackson-databind for payload parsing
• AWS EventBridge rule configured to forward interaction.routed events to your microservice HTTP endpoint

Authentication Setup

Genesys Cloud uses OAuth 2.0 client credentials flow for server to server API access. The microservice must request an access token before invoking the Routing API. The token expires after the duration specified in the expires_in field. You must cache the token and request a new one only when the current token expires.

The following service handles token acquisition and caching. It uses java.net.http.HttpClient to avoid external HTTP dependencies.

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.time.Instant;
import java.util.Map;

public class GenesysAuthService {
    private final String clientId;
    private final String clientSecret;
    private final String baseUrl;
    private final ObjectMapper objectMapper = new ObjectMapper();
    private final HttpClient httpClient = HttpClient.newBuilder()
            .connectTimeout(java.time.Duration.ofSeconds(10))
            .build();

    private volatile String cachedToken;
    private volatile Instant tokenExpiry;

    public GenesysAuthService(String clientId, String clientSecret, String baseUrl) {
        this.clientId = clientId;
        this.clientSecret = clientSecret;
        this.baseUrl = baseUrl;
    }

    public String getAccessToken() throws Exception {
        if (cachedToken != null && Instant.now().isBefore(tokenExpiry)) {
            return cachedToken;
        }

        synchronized (this) {
            if (cachedToken != null && Instant.now().isBefore(tokenExpiry)) {
                return cachedToken;
            }
            return refreshToken();
        }
    }

    private String refreshToken() throws Exception {
        String tokenUrl = baseUrl + "/login/oauth2/v2/token";
        String body = Map.of(
                "grant_type", "client_credentials",
                "scope", "routing:skill:update",
                "client_id", clientId,
                "client_secret", clientSecret
        ).entrySet().stream()
                .map(e -> e.getKey() + "=" + e.getValue())
                .reduce((a, b) -> a + "&" + b)
                .orElse("");

        HttpRequest request = HttpRequest.newBuilder()
                .uri(URI.create(tokenUrl))
                .header("Content-Type", "application/x-www-form-urlencoded")
                .POST(HttpRequest.BodyPublishers.ofString(body))
                .build();

        HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString());

        if (response.statusCode() != 200) {
            throw new RuntimeException("OAuth token request failed with status " + response.statusCode());
        }

        JsonNode json = objectMapper.readTree(response.body());
        cachedToken = json.get("access_token").asText();
        tokenExpiry = Instant.now().plusSeconds(json.get("expires_in").asLong());
        return cachedToken;
    }
}

The HTTP request cycle for authentication follows this pattern:

• Method: POST
• Path: /login/oauth2/v2/token
• Headers: Content-Type: application/x-www-form-urlencoded
• Body: grant_type=client_credentials&scope=routing:skill:update&client_id=YOUR_ID&client_secret=YOUR_SECRET
• Response: {"access_token":"eyJhbG...","expires_in":3600,"token_type":"Bearer"}

Implementation

Step 1: Parse EventBridge Interaction Payload

AWS EventBridge wraps the Genesys Cloud event in a standard envelope. The detail field contains the actual interaction.routed payload. You must extract the agent user ID and the customer tier attribute from the participants array.

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.stereotype.Service;

@Service
public class InteractionParser {
    private final ObjectMapper objectMapper = new ObjectMapper();

    public ParsedInteraction parse(String eventBridgePayload) throws Exception {
        JsonNode root = objectMapper.readTree(eventBridgePayload);
        JsonNode detail = root.path("detail");
        if (detail.isMissingNode()) {
            throw new IllegalArgumentException("Missing detail field in EventBridge payload");
        }

        String agentUserId = null;
        String customerTier = null;

        JsonNode participants = detail.path("participants");
        if (participants.isArray()) {
            for (JsonNode participant : participants) {
                String role = participant.path("role").asText("");
                
                if ("agent".equals(role)) {
                    agentUserId = participant.path("user").path("id").asText(null);
                } else if ("customer".equals(role)) {
                    JsonNode attributes = participant.path("attributes");
                    if (!attributes.isMissingNode()) {
                        customerTier = attributes.path("customerTier").asText(null);
                    }
                }
            }
        }

        if (agentUserId == null) {
            throw new IllegalArgumentException("Agent user ID not found in interaction participants");
        }

        return new ParsedInteraction(agentUserId, customerTier);
    }

    public record ParsedInteraction(String agentUserId, String customerTier) {}
}

The parser iterates through the participants array. It isolates the agent role to capture the user.id and isolates the customer role to read custom attributes. This approach handles participant ordering variations that occur in different interaction routing scenarios.

Step 2: Map Customer Tier to Routing Skills

Genesys Cloud skills are identified by UUIDs. You must maintain a tier to skill mapping in your application configuration. The following service translates the extracted tier into a list of UserSkill objects compatible with the SDK.

import com.mendix.purecloud.model.routing.UserSkill;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.springframework.stereotype.Service;

@Service
public class SkillMappingService {
    private final Map<String, List<SkillDefinition>> tierSkillMap;

    public SkillMappingService() {
        tierSkillMap = Map.of(
            "bronze", List.of(new SkillDefinition("11111111-1111-1111-1111-111111111111", 1)),
            "silver", List.of(new SkillDefinition("22222222-2222-2222-2222-222222222222", 2)),
            "gold", List.of(new SkillDefinition("33333333-3333-3333-3333-333333333333", 3)),
            "platinum", List.of(new SkillDefinition("44444444-4444-4444-4444-444444444444", 5))
        );
    }

    public List<UserSkill> buildSkills(String tier) {
        List<SkillDefinition> definitions = tierSkillMap.getOrDefault(tier, List.of());
        List<UserSkill> skills = new ArrayList<>();
        for (SkillDefinition def : definitions) {
            UserSkill skill = new UserSkill();
            skill.setSkillId(def.skillId());
            skill.setUnitCount(def.unitCount());
            skills.add(skill);
        }
        return skills;
    }

    public record SkillDefinition(String skillId, int unitCount) {}
}

The unitCount field represents the number of concurrent interactions the agent can handle for that skill. Adjust the mapping to match your Genesys Cloud skill definitions and capacity planning rules.

Step 3: Invoke the Routing API with Retry Logic

The PUT /api/v2/routing/users/{userId}/skills endpoint replaces the entire skill set for the specified user. The Java SDK throws an ApiException when the HTTP status code is outside the 2xx range. You must handle 429 Too Many Requests by reading the Retry-After header and implementing exponential backoff.

import com.mendix.purecloud.api.routing.RoutingApi;
import com.mendix.purecloud.client.ApiException;
import com.mendix.purecloud.client.PureCloudPlatformClientV2;
import com.mendix.purecloud.model.routing.UserSkill;
import com.mendix.purecloud.model.routing.UserSkills;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class RoutingSkillService {
    private static final Logger log = LoggerFactory.getLogger(RoutingSkillService.class);
    private final GenesysAuthService authService;
    private final SkillMappingService skillMappingService;
    private final String baseUrl;
    private static final int MAX_RETRIES = 3;

    public RoutingSkillService(GenesysAuthService authService, 
                               SkillMappingService skillMappingService,
                               String baseUrl) {
        this.authService = authService;
        this.skillMappingService = skillMappingService;
        this.baseUrl = baseUrl;
    }

    public void updateAgentSkills(String agentUserId, String customerTier) throws Exception {
        List<UserSkill> skills = skillMappingService.buildSkills(customerTier);
        UserSkills body = new UserSkills();
        body.setSkills(skills);

        int attempt = 0;
        while (attempt < MAX_RETRIES) {
            try {
                PureCloudPlatformClientV2 client = PureCloudPlatformClientV2.create(baseUrl);
                client.setAccessToken(authService.getAccessToken());
                
                RoutingApi routingApi = client.getRoutingApi();
                routingApi.putRoutingUserSkills(agentUserId, body);
                
                log.info("Successfully updated skills for agent {} with tier {}", agentUserId, customerTier);
                return;
            } catch (ApiException e) {
                if (e.getCode() == 429) {
                    long retryAfter = parseRetryAfter(e);
                    log.warn("Rate limited (429). Retrying after {} seconds. Attempt {}", retryAfter, attempt + 1);
                    Thread.sleep(retryAfter * 1000);
                    attempt++;
                } else {
                    log.error("Routing API failed with status {}: {}", e.getCode(), e.getMessage());
                    throw e;
                }
            }
        }
        throw new RuntimeException("Max retries exceeded for skill update");
    }

    private long parseRetryAfter(ApiException ex) {
        String retryAfterHeader = ex.getResponseHeaders().getOrDefault("Retry-After", "2");
        try {
            return Long.parseLong(retryAfterHeader);
        } catch (NumberFormatException e) {
            return Math.min(2L * (long) Math.pow(2, ex.getCode() == 429 ? 1 : 0), 10);
        }
    }
}

The SDK initializes with PureCloudPlatformClientV2.create(baseUrl). You must call setAccessToken() before invoking any API methods. The putRoutingUserSkills method sends a PUT request to /api/v2/routing/users/{userId}/skills. The retry loop respects the Retry-After header returned by Genesys Cloud load balancers during traffic spikes.

Complete Working Example

The following Spring Boot application wires the components together and exposes an HTTP endpoint that AWS EventBridge can invoke.

import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@RestController
public class SkillRoutingApplication {
    private final InteractionParser parser;
    private final RoutingSkillService routingService;
    private final ObjectMapper objectMapper = new ObjectMapper();

    public SkillRoutingApplication(InteractionParser parser, RoutingSkillService routingService) {
        this.parser = parser;
        this.routingService = routingService;
    }

    @PostMapping("/events/interaction-routed")
    public String handleEvent(@RequestBody String payload) {
        try {
            InteractionParser.ParsedInteraction interaction = parser.parse(payload);
            if (interaction.customerTier() == null) {
                return "{\"status\": \"skipped\", \"reason\": \"missing_customer_tier\"}";
            }
            
            routingService.updateAgentSkills(interaction.agentUserId(), interaction.customerTier());
            return "{\"status\": \"success\", \"agentId\": \"" + interaction.agentUserId() + "\"}";
        } catch (Exception e) {
            return "{\"status\": \"error\", \"message\": \"" + e.getMessage() + "\"}";
        }
    }

    public static void main(String[] args) {
        SpringApplication.run(SkillRoutingApplication.class, args);
    }
}

Configuration in application.properties:

genesys.base-url=https://api.mypurecloud.com
genesys.client-id=${GENESYS_CLIENT_ID}
genesys.client-secret=${GENESYS_CLIENT_SECRET}

Configuration class to inject credentials:

import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class GenesysConfig {
    @Value("${genesys.base-url}")
    private String baseUrl;
    @Value("${genesys.client-id}")
    private String clientId;
    @Value("${genesys.client-secret}")
    private String clientSecret;

    @Bean
    public GenesysAuthService authService() {
        return new GenesysAuthService(clientId, clientSecret, baseUrl);
    }

    @Bean
    public RoutingSkillService routingSkillService(GenesysAuthService authService,
                                                   SkillMappingService skillMappingService) {
        return new RoutingSkillService(authService, skillMappingService, baseUrl);
    }
}

Deploy this application to an AWS ECS Fargate task or an EC2 instance behind an Application Load Balancer. Configure the EventBridge rule to target the ALB DNS name or the direct container IP. The endpoint accepts application/json POST requests and returns a JSON status response.

Common Errors & Debugging

Error: 401 Unauthorized

• Cause: The OAuth token is expired, malformed, or the client credentials are incorrect.
• Fix: Verify that getAccessToken() successfully caches a new token. Check that the OAuth client in Genesys Cloud has the routing:skill:update scope enabled. Ensure setAccessToken() is called on the SDK client before the API invocation.

Error: 403 Forbidden

• Cause: The OAuth client lacks the required scope, or the application user associated with the client does not have the necessary admin permissions to modify routing skills.
• Fix: Navigate to the Genesys Cloud admin console under Admin > Security > OAuth Clients. Confirm the client has routing:skill:update. Assign the application user to a role that includes Routing > Skills > Update permissions.

Error: 404 Not Found

• Cause: The agentUserId extracted from the EventBridge payload does not exist in the Genesys Cloud organization, or the user has been deleted.
• Fix: Validate the user.id field in the interaction.routed payload. Implement a fallback that logs the missing user ID instead of throwing an exception, preventing event processing deadlocks.

Error: 429 Too Many Requests

• Cause: The microservice exceeded Genesys Cloud API rate limits. This commonly occurs when multiple interaction.routed events fire simultaneously for high volume queues.
• Fix: The provided retry logic handles this automatically. For sustained load, implement an AWS SQS queue between EventBridge and the microservice. Process events sequentially or with limited concurrency to stay within the 100 requests per second per client limit.

Error: 500 Internal Server Error

• Cause: The UserSkills payload contains invalid skill IDs or unit counts outside the allowed range.
• Fix: Validate that all skill IDs in SkillMappingService correspond to active skills in your Genesys Cloud instance. Ensure unitCount is between 1 and 100. The SDK validation catches negative values, but orphaned skill IDs will return 500 until cleaned up in the routing configuration.

Official References

• Routing Skills API Documentation
• Java SDK Reference
• EventBridge Integration Guide
• OAuth 2.0 Client Credentials Flow