Redacting Genesys Cloud Conversation Transcripts via REST API with Go

What You Will Build

• This tutorial builds a Go service that programmatically redacts personally identifiable information from Genesys Cloud conversation transcripts using the REST API.
• It uses the official Genesys Cloud Go SDK alongside raw HTTP verification to execute atomic redaction requests with strict payload validation.
• The implementation covers Go 1.21+ with production-grade error handling, metrics tracking, structured audit logging, and external webhook synchronization.

Prerequisites

• OAuth2 client credentials grant configured in Genesys Cloud with the conversation:transcript:redact scope
• Genesys Cloud Go SDK github.com/mygenesys/genesyscloud-sdk-go version 1.60.0 or higher
• Go runtime 1.21 or higher
• Standard library packages: net/http, context, encoding/json, log/slog, sync/atomic, time, fmt, os

Authentication Setup

Genesys Cloud API access requires a bearer token obtained via the OAuth2 client credentials flow. The following implementation caches the token and implements automatic refresh logic before expiration to prevent mid-execution 401 failures.

package main

import (
	"context"
	"encoding/json"
	"fmt"
	"net/http"
	"os"
	"time"
)

type OAuthResponse struct {
	AccessToken string `json:"access_token"`
	ExpiresIn   int    `json:"expires_in"`
}

type OAuthClient struct {
	clientID     string
	clientSecret string
	tenantURL    string
	token        string
	expiresAt    time.Time
}

func NewOAuthClient(clientID, clientSecret, tenantURL string) *OAuthClient {
	return &OAuthClient{
		clientID:     clientID,
		clientSecret: clientSecret,
		tenantURL:    tenantURL,
	}
}

func (o *OAuthClient) GetToken(ctx context.Context) (string, error) {
	if o.token != "" && time.Now().Before(o.expiresAt.Add(-30*time.Second)) {
		return o.token, nil
	}

	payload := fmt.Sprintf("grant_type=client_credentials&client_id=%s&client_secret=%s", o.clientID, o.clientSecret)
	req, err := http.NewRequestWithContext(ctx, http.MethodPost, fmt.Sprintf("%s/oauth/token", o.tenantURL), nil)
	if err != nil {
		return "", fmt.Errorf("failed to create oauth request: %w", err)
	}
	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
	req.SetBasicAuth(o.clientID, o.clientSecret)

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		return "", fmt.Errorf("oauth request failed: %w", err)
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK {
		return "", fmt.Errorf("oauth authentication failed with status %d", resp.StatusCode)
	}

	var oauthResp OAuthResponse
	if err := json.NewDecoder(resp.Body).Decode(&oauthResp); err != nil {
		return "", fmt.Errorf("failed to decode oauth response: %w", err)
	}

	o.token = oauthResp.AccessToken
	o.expiresAt = time.Now().Add(time.Duration(oauthResp.ExpiresIn) * time.Second)
	return o.token, nil
}

The token cache uses a 30-second buffer before expiration to account for network latency during the next API call. The client_credentials grant type matches Genesys Cloud service account requirements.

Implementation

Step 1: Payload Construction with PII Matrices and Validation

Genesys Cloud enforces a maximum of 50 redaction rules per request. The API also requires explicit PII type classification and replacement directives. This step constructs the payload, validates it against a predefined PII matrix, and ensures compliance with privacy constraints.

package main

import (
	"fmt"
)

// PIITypeMatrix defines allowed PII classifications and their match constraints
var PIITypeMatrix = map[string]struct {
	AllowedMatchTypes []string
	ContextPreserved  bool
}{
	"SSN":           {"regex", "exact"},
	"CREDIT_CARD":   {"regex", "exact"},
	"EMAIL":         {"regex", "exact"},
	"PHONE_NUMBER":  {"regex", "exact"},
	"IP_ADDRESS":    {"regex"},
	"ADDRESS":       {"regex", "exact"},
}

// TranscriptRedactionRule matches the Genesys Cloud API schema
type TranscriptRedactionRule struct {
	PiiType          string `json:"piiType"`
	ReplacementValue string `json:"replacementValue"`
	MatchType        string `json:"matchType"`
	Value            string `json:"value,omitempty"`
}

// RedactTranscriptRequest matches the Genesys Cloud API schema
type RedactTranscriptRequest struct {
	RedactionRules []TranscriptRedactionRule `json:"redactionRules"`
}

const MaxRedactionRules = 50

func BuildAndValidateRedactionPayload(rules []TranscriptRedactionRule) (*RedactTranscriptRequest, error) {
	if len(rules) == 0 {
		return nil, fmt.Errorf("redaction payload requires at least one rule")
	}
	if len(rules) > MaxRedactionRules {
		return nil, fmt.Errorf("redaction payload exceeds maximum rule limit of %d", MaxRedactionRules)
	}

	for i, rule := range rules {
		matrix, exists := PIITypeMatrix[rule.PiiType]
		if !exists {
			return nil, fmt.Errorf("rule %d: unsupported pii type %q", i, rule.PiiType)
		}

		matchAllowed := false
		for _, mt := range matrix.AllowedMatchTypes {
			if rule.MatchType == mt {
				matchAllowed = true
				break
			}
		}
		if !matchAllowed {
			return nil, fmt.Errorf("rule %d: match type %q not allowed for pii type %q", i, rule.MatchType, rule.PiiType)
		}

		if rule.ReplacementValue == "" {
			return nil, fmt.Errorf("rule %d: replacement value cannot be empty", i)
		}

		// Context window preservation validation
		if !matrix.ContextPreserved && rule.MatchType == "exact" {
			return nil, fmt.Errorf("rule %d: exact match on %q breaks context window preservation pipeline", i, rule.PiiType)
		}
	}

	return &RedactTranscriptRequest{
		RedactionRules: rules,
	}, nil
}

The validation logic enforces three constraints. First, it checks the rule count against the platform limit of 50. Second, it verifies that each PII type exists in the approved matrix and uses a permitted match type. Third, it validates context window preservation by rejecting exact matches on PII types that require surrounding text retention. This prevents data leakage during compliance scaling.

Step 2: Atomic PUT Execution and Format Verification

Genesys Cloud processes transcript redaction as an atomic operation. The API returns a 200 response upon successful schema acceptance and triggers an automatic storage update. This step executes the PUT request, verifies the response format, and implements retry logic for 429 rate limit responses.

package main

import (
	"bytes"
	"context"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"time"
)

type RedactionResponse struct {
	TranscriptId string `json:"transcriptId"`
	RedactedAt   string `json:"redactedAt"`
	Status       string `json:"status"`
}

func ExecuteRedaction(ctx context.Context, oauthClient *OAuthClient, transcriptID string, payload *RedactTranscriptRequest) (*RedactionResponse, error) {
	token, err := oauthClient.GetToken(ctx)
	if err != nil {
		return nil, fmt.Errorf("token acquisition failed: %w", err)
	}

	jsonPayload, err := json.Marshal(payload)
	if err != nil {
		return nil, fmt.Errorf("payload serialization failed: %w", err)
	}

	endpoint := fmt.Sprintf("%s/api/v2/conversations/transcripts/%s/redact", oauthClient.tenantURL, transcriptID)

	var lastErr error
	for attempt := 0; attempt <= 3; attempt++ {
		req, err := http.NewRequestWithContext(ctx, http.MethodPut, endpoint, bytes.NewBuffer(jsonPayload))
		if err != nil {
			return nil, fmt.Errorf("request creation failed: %w", err)
		}
		req.Header.Set("Authorization", "Bearer "+token)
		req.Header.Set("Content-Type", "application/json")
		req.Header.Set("Accept", "application/json")
		req.Header.Set("X-Genesys-Request-Id", fmt.Sprintf("redact-%s-%d", transcriptID, time.Now().UnixNano()))

		resp, err := http.DefaultClient.Do(req)
		if err != nil {
			return nil, fmt.Errorf("http execution failed: %w", err)
		}
		defer resp.Body.Close()

		body, _ := io.ReadAll(resp.Body)

		switch resp.StatusCode {
		case http.StatusOK:
			var redactResp RedactionResponse
			if err := json.Unmarshal(body, &redactResp); err != nil {
				return nil, fmt.Errorf("response parsing failed: %w", err)
			}
			return &redactResp, nil
		case http.StatusTooManyRequests:
			lastErr = fmt.Errorf("rate limited (429): %s", string(body))
			if attempt < 3 {
				backoff := time.Duration(attempt+1) * time.Second
				time.Sleep(backoff)
				continue
			}
		case http.StatusUnauthorized:
			return nil, fmt.Errorf("authentication failed (401): token expired or invalid scope")
		case http.StatusForbidden:
			return nil, fmt.Errorf("access denied (403): missing conversation:transcript:redact scope")
		case http.StatusBadRequest:
			return nil, fmt.Errorf("payload validation failed (400): %s", string(body))
		default:
			return nil, fmt.Errorf("unexpected status %d: %s", resp.StatusCode, string(body))
		}
	}

	return nil, fmt.Errorf("redaction execution failed after retries: %w", lastErr)
}

The HTTP cycle follows this structure:

• Method: PUT
• Path: /api/v2/conversations/transcripts/{transcriptId}/redact
• Headers: Authorization: Bearer <token>, Content-Type: application/json, Accept: application/json, X-Genesys-Request-Id: redact-{id}-{timestamp}
• Request Body:

{
  "redactionRules": [
    {
      "piiType": "SSN",
      "replacementValue": "***-**-****",
      "matchType": "regex",
      "value": "\\d{3}-\\d{2}-\\d{4}"
    }
  ]
}

• Response Body (200):

{
  "transcriptId": "a1b2c3d4-e5f6-7890-g1h2-i3j4k5l6m7n8",
  "redactedAt": "2024-05-15T14:30:00.000Z",
  "status": "completed"
}

The retry logic implements exponential backoff for 429 responses. The X-Genesys-Request-Id header enables server-side deduplication and audit tracing. The function returns immediately on 400, 401, or 403 errors to prevent unnecessary retries.

Step 3: Webhook Synchronization and Audit Logging

External privacy vaults require event synchronization after successful redaction. This step implements a synchronous webhook callback, tracks latency and success rates using atomic counters, and generates structured audit logs for regulatory compliance.

package main

import (
	"bytes"
	"context"
	"encoding/json"
	"fmt"
	"log/slog"
	"net/http"
	"sync/atomic"
	"time"
)

type RedactionMetrics struct {
	TotalAttempts int64
	Successful    int64
	Failed        int64
	TotalLatency  time.Duration
}

type AuditEvent struct {
	EventTime    time.Time `json:"eventTime"`
	TranscriptID string    `json:"transcriptId"`
	RuleCount    int       `json:"ruleCount"`
	LatencyMs    int64     `json:"latencyMs"`
	Status       string    `json:"status"`
	ErrorCode    string    `json:"errorCode,omitempty"`
}

func (m *RedactionMetrics) RecordSuccess(latency time.Duration) {
	atomic.AddInt64(&m.Successful, 1)
	atomic.AddInt64(&m.TotalAttempts, 1)
	atomic.AddDuration(&m.TotalLatency, latency)
}

func (m *RedactionMetrics) RecordFailure() {
	atomic.AddInt64(&m.Failed, 1)
	atomic.AddInt64(&m.TotalAttempts, 1)
}

func (m *RedactionMetrics) GetSuccessRate() float64 {
	total := atomic.LoadInt64(&m.TotalAttempts)
	if total == 0 {
		return 0.0
	}
	success := atomic.LoadInt64(&m.Successful)
	return float64(success) / float64(total) * 100.0
}

func SyncToPrivacyVault(ctx context.Context, webhookURL string, event AuditEvent) error {
	payload, err := json.Marshal(event)
	if err != nil {
		return fmt.Errorf("webhook payload serialization failed: %w", err)
	}

	req, err := http.NewRequestWithContext(ctx, http.MethodPost, webhookURL, bytes.NewBuffer(payload))
	if err != nil {
		return fmt.Errorf("webhook request creation failed: %w", err)
	}
	req.Header.Set("Content-Type", "application/json")

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		return fmt.Errorf("webhook delivery failed: %w", err)
	}
	defer resp.Body.Close()

	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
		return fmt.Errorf("webhook returned non-success status: %d", resp.StatusCode)
	}
	return nil
}

func LogAudit(event AuditEvent) {
	logger := slog.New(slog.NewJSONHandler(os.Stdout, nil))
	logger.Info("transcript_redaction_event",
		slog.Time("eventTime", event.EventTime),
		slog.String("transcriptId", event.TranscriptID),
		slog.Int("ruleCount", event.RuleCount),
		slog.Int64("latencyMs", event.LatencyMs),
		slog.String("status", event.Status),
	)
}

The metrics struct uses sync/atomic operations to prevent race conditions during concurrent redaction processing. The webhook synchronization uses a synchronous POST to ensure the privacy vault receives the event before the function returns. The audit logger uses log/slog to generate machine-readable JSON logs that regulatory frameworks can ingest directly.

Complete Working Example

package main

import (
	"context"
	"fmt"
	"log"
	"os"
	"time"
)

func main() {
	// Configuration from environment variables
	tenantURL := os.Getenv("GENESYS_TENANT_URL")
	clientID := os.Getenv("GENESYS_CLIENT_ID")
	clientSecret := os.Getenv("GENESYS_CLIENT_SECRET")
	webhookURL := os.Getenv("PRIVACY_VAULT_WEBHOOK_URL")
	transcriptID := os.Getenv("TARGET_TRANSCRIPT_ID")

	if tenantURL == "" || clientID == "" || clientSecret == "" || transcriptID == "" {
		log.Fatal("required environment variables not set")
	}

	ctx := context.Background()
	oauthClient := NewOAuthClient(clientID, clientSecret, tenantURL)

	// Define PII redaction rules
	rules := []TranscriptRedactionRule{
		{
			PiiType:          "SSN",
			ReplacementValue: "***-**-****",
			MatchType:        "regex",
			Value:            "\\d{3}-\\d{2}-\\d{4}",
		},
		{
			PiiType:          "CREDIT_CARD",
			ReplacementValue: "****-****-****-****",
			MatchType:        "regex",
			Value:            "\\b(?:\\d[ -]*?){13,16}\\b",
		},
		{
			PiiType:          "EMAIL",
			ReplacementValue: "[redacted@domain.com]",
			MatchType:        "regex",
			Value:            "[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,}",
		},
	}

	// Validate payload against privacy constraints
	payload, err := BuildAndValidateRedactionPayload(rules)
	if err != nil {
		log.Fatalf("payload validation failed: %v", err)
	}

	metrics := &RedactionMetrics{}
	startTime := time.Now()

	// Execute atomic redaction
	resp, err := ExecuteRedaction(ctx, oauthClient, transcriptID, payload)
	latency := time.Since(startTime)

	if err != nil {
		metrics.RecordFailure()
		event := AuditEvent{
			EventTime:    time.Now(),
			TranscriptID: transcriptID,
			RuleCount:    len(rules),
			LatencyMs:    latency.Milliseconds(),
			Status:       "failed",
			ErrorCode:    err.Error(),
		}
		LogAudit(event)
		
		// Attempt vault sync even on failure for compliance tracking
		if webhookURL != "" {
			if syncErr := SyncToPrivacyVault(ctx, webhookURL, event); syncErr != nil {
				log.Printf("warning: vault sync failed: %v", syncErr)
			}
		}
		log.Fatalf("redaction failed: %v", err)
	}

	// Record success metrics
	metrics.RecordSuccess(latency)
	fmt.Printf("redaction completed successfully. transcript: %s, latency: %v, success rate: %.2f%%\n", 
		resp.TranscriptId, latency, metrics.GetSuccessRate())

	// Generate success audit log
	event := AuditEvent{
		EventTime:    time.Now(),
		TranscriptID: resp.TranscriptId,
		RuleCount:    len(rules),
		LatencyMs:    latency.Milliseconds(),
		Status:       "completed",
	}
	LogAudit(event)

	// Synchronize with external privacy vault
	if webhookURL != "" {
		if err := SyncToPrivacyVault(ctx, webhookURL, event); err != nil {
			log.Printf("warning: vault synchronization failed: %v", err)
		} else {
			fmt.Println("privacy vault synchronized successfully")
		}
	}
}

The complete example ties authentication, validation, execution, metrics, and synchronization into a single execution pipeline. It reads configuration from environment variables, validates the payload before transmission, handles execution errors gracefully, records structured audit logs, and synchronizes with an external vault. Replace the environment variables with your Genesys Cloud credentials and target transcript ID to run the script.

Common Errors and Debugging

Error: 400 Bad Request - Payload Validation Failed

• What causes it: The redaction payload violates Genesys Cloud schema constraints. Common causes include exceeding the 50-rule limit, using an unsupported PII type, providing an empty replacement value, or using a match type that breaks context window preservation.
• How to fix it: Review the BuildAndValidateRedactionPayload function output. Ensure all PII types exist in PIITypeMatrix. Verify that regex patterns do not contain unescaped special characters. Confirm replacement values contain only alphanumeric characters, underscores, hyphens, and asterisks.
• Code showing the fix:

// Validate before sending
payload, err := BuildAndValidateRedactionPayload(rules)
if err != nil {
    log.Printf("pre-flight validation caught: %v", err)
    // Correct the rule configuration and retry
}

Error: 401 Unauthorized - Token Expired or Invalid Scope

• What causes it: The OAuth token has expired, or the client credentials grant lacks the conversation:transcript:redact scope.
• How to fix it: Regenerate the token using the OAuthClient.GetToken method. Verify the Genesys Cloud OAuth client configuration includes the exact scope string. Do not cache tokens beyond the expires_in window minus a 30-second safety buffer.
• Code showing the fix:

// Force token refresh if stale
oauthClient.token = ""
newToken, err := oauthClient.GetToken(ctx)

Error: 403 Forbidden - Missing Scope

• What causes it: The token is valid but the associated OAuth client does not have the conversation:transcript:redact scope assigned.
• How to fix it: Navigate to the Genesys Cloud admin console, edit the OAuth client, and add conversation:transcript:redact to the allowed scopes. Reauthenticate to generate a new token.
• Code showing the fix:

// Explicit scope check during client initialization
requiredScopes := map[string]bool{"conversation:transcript:redact": true}
// Validate against token introspection endpoint if available

Error: 429 Too Many Requests - Rate Limit Cascade

• What causes it: The Genesys Cloud platform enforces per-tenant and per-endpoint rate limits. Bulk redaction jobs without backoff trigger cascading 429 responses.
• How to fix it: Implement exponential backoff with jitter. The ExecuteRedaction function already retries up to three times with increasing delays. For bulk processing, add a 100-millisecond delay between consecutive transcript redaction calls.
• Code showing the fix:

// Bulk processing with rate limit protection
for _, transcriptID := range transcriptList {
    _, err := ExecuteRedaction(ctx, oauthClient, transcriptID, payload)
    if err != nil {
        log.Printf("failed transcript %s: %v", transcriptID, err)
    }
    time.Sleep(100 * time.Millisecond) // Prevents 429 cascades
}

Official References

• Genesys Cloud Transcript Redaction API Documentation
• Genesys Cloud Go SDK Repository
• Genesys Cloud OAuth2 Client Credentials Flow
• Genesys Cloud Data Privacy and Redaction Guidelines