Retrieving Genesys Cloud Interaction Transcripts with Go

What You Will Build

A Go application that fetches conversation transcripts from Genesys Cloud CX, handles presigned URL expiration gracefully, streams large JSON payloads to extract speaker turns and timestamps, aligns segments with audio waveforms, filters by participant role, archives data to AWS S3, and generates summary metrics. This tutorial uses the Genesys Cloud CX Media API, the official platform-client-v2-go SDK for authentication, and standard Go libraries for streaming and HTTP handling.

Prerequisites

• Go 1.21 or higher
• Genesys Cloud CX OAuth 2.0 Client Credentials (Client ID, Client Secret, Private Key, or JWT config)
• Required OAuth scopes: interaction:read, media:read, analytics:read
• AWS S3 bucket with write permissions (for archival)
• Dependencies: github.com/MyPureCloud/platform-client-v2-go/platformclientv2, github.com/aws/aws-sdk-go-v2, github.com/aws/aws-sdk-go-v2/config, github.com/aws/aws-sdk-go-v2/feature/s3/manager

Authentication Setup

Genesys Cloud CX uses OAuth 2.0 client credentials flow for server-to-server integrations. The official Go SDK handles token acquisition and automatic refresh when configured correctly. You must initialize the platform client with your environment and credentials before making API calls.

package main

import (
    "context"
    "log"
    "os"

    "github.com/MyPureCloud/platform-client-v2-go/platformclientv2"
)

func initGenesysClient() *platformclientv2.Client {
    ctx := context.Background()
    platformClient := platformclientv2.NewClient()
    platformClient.SetEnvironment(platformclientv2.PureCloudEnvUs)

    // Configure OAuth client credentials
    oauthConfig := &platformclientv2.OAuthConfig{
        ClientId:     os.Getenv("GENESYS_CLIENT_ID"),
        ClientSecret: os.Getenv("GENESYS_CLIENT_SECRET"),
        PrivateKey:   os.Getenv("GENESYS_PRIVATE_KEY"),
        JwtConfig:    os.Getenv("GENESYS_JWT_CONFIG"),
    }

    // Register the OAuth provider with the SDK
    platformClient.SetOAuthConfig(oauthConfig)

    // Force initial token fetch to validate credentials
    _, err := platformClient.AuthClient().ClientCredentialsToken(ctx)
    if err != nil {
        log.Fatalf("Failed to authenticate with Genesys Cloud: %v", err)
    }

    return platformClient
}

The SDK caches the access token and automatically requests a new one when the current token expires. You do not need to implement manual refresh logic when using the official client.

Implementation

Step 1: Query Media API for Transcript Availability

The Media API exposes transcript metadata at /api/v2/conversations/media/{conversationId}/transcripts. This endpoint returns a JSON payload containing transcript segments, participant mappings, and a downloadUrl when the transcript exceeds inline response limits. You must verify the response structure before proceeding.

type TranscriptMetadata struct {
    Self         string     `json:"self"`
    DownloadUrl  string     `json:"downloadUrl,omitempty"`
    Conversation string     `json:"conversation"`
    Participants []Participant `json:"participants"`
    Transcript   []Segment  `json:"transcript"`
}

type Participant struct {
    Id   string `json:"id"`
    Name string `json:"name"`
    Role string `json:"role"`
}

type Segment struct {
    StartTime  float64 `json:"start_time"`
    EndTime    float64 `json:"end_time"`
    Text       string  `json:"text"`
    SpeakerId  string  `json:"speaker_id"`
    Confidence float64 `json:"confidence"`
}

The following function queries the endpoint and returns the metadata. It includes a 429 retry mechanism to handle rate limits.

func fetchTranscriptMetadata(client *platformclientv2.Client, conversationId string) (*TranscriptMetadata, error) {
    ctx := context.Background()
    url := fmt.Sprintf("https://api.mypurecloud.com/api/v2/conversations/media/%s/transcripts", conversationId)
    
    req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
    if err != nil {
        return nil, fmt.Errorf("failed to create request: %w", err)
    }

    // Attach OAuth token from SDK
    token, err := client.AuthClient().ClientCredentialsToken(ctx)
    if err != nil {
        return nil, fmt.Errorf("failed to retrieve token: %w", err)
    }
    req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", token.AccessToken))
    req.Header.Set("Accept", "application/json")
    req.Header.Set("Content-Type", "application/json")

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

    if resp.StatusCode == http.StatusTooManyRequests {
        retryAfter := 1
        if ra := resp.Header.Get("Retry-After"); ra != "" {
            fmt.Sscanf(ra, "%d", &retryAfter)
        }
        time.Sleep(time.Duration(retryAfter) * time.Second)
        return fetchTranscriptMetadata(client, conversationId)
    }

    if resp.StatusCode != http.StatusOK {
        body, _ := io.ReadAll(resp.Body)
        return nil, fmt.Errorf("API error %d: %s", resp.StatusCode, string(body))
    }

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

    return &metadata, nil
}

Step 2: Handle Presigned URL Expiration for Transcript Downloads

When Genesys Cloud returns a downloadUrl, it is a presigned S3 link that typically expires within 15 minutes. Attempting to download after expiration returns HTTP 403 Forbidden. You must detect expiration and request a fresh URL by re-querying the metadata endpoint.

func downloadTranscriptPayload(client *platformclientv2.Client, conversationId string) (*http.Response, error) {
    metadata, err := fetchTranscriptMetadata(client, conversationId)
    if err != nil {
        return nil, err
    }

    if metadata.DownloadUrl == "" {
        return nil, fmt.Errorf("no download URL provided for conversation %s", conversationId)
    }

    req, err := http.NewRequest(http.MethodGet, metadata.DownloadUrl, nil)
    if err != nil {
        return nil, fmt.Errorf("failed to create download request: %w", err)
    }

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

    // Handle presigned URL expiration
    if resp.StatusCode == http.StatusForbidden || resp.StatusCode == http.StatusGone {
        log.Println("Presigned URL expired. Refreshing transcript metadata...")
        time.Sleep(2 * time.Second)
        return downloadTranscriptPayload(client, conversationId)
    }

    if resp.StatusCode != http.StatusOK {
        resp.Body.Close()
        return nil, fmt.Errorf("download failed with status %d", resp.StatusCode)
    }

    return resp, nil
}

Step 3: Parse JSON Transcript Payloads with Streaming Parsers

Large transcripts can exceed hundreds of megabytes. Loading the entire JSON into memory causes allocation spikes and potential out-of-memory errors. Go’s json.Decoder provides a streaming approach that processes segments sequentially.

func streamTranscriptSegments(reader io.Reader) ([]Segment, error) {
    decoder := json.NewDecoder(reader)
    var segments []Segment

    // Expect a JSON object with a "transcript" array
    if err := decoder.Decode(&struct {
        Transcript []Segment `json:"transcript"`
    }{
        Transcript: &segments,
    }); err != nil {
        return nil, fmt.Errorf("stream decoding failed: %w", err)
    }

    return segments, nil
}

For extremely large files where even the array wrapper is problematic, you can implement a custom json.Decoder loop that reads token-by-token. The above approach balances memory efficiency with simplicity for standard Genesys payloads.

Step 4: Align Transcript Segments with Audio Waveforms

Waveform visualization requires mapping transcript timestamps to audio sample indices. Genesys Cloud provides start_time and end_time in seconds. You multiply these values by the audio sample rate to obtain the exact sample position.

type WaveformAlignment struct {
    StartSample int
    EndSample   int
    Segment     Segment
}

func alignSegmentsToWaveform(segments []Segment, sampleRate float64) []WaveformAlignment {
    alignments := make([]WaveformAlignment, 0, len(segments))

    for _, seg := range segments {
        startSample := int(seg.StartTime * sampleRate)
        endSample := int(seg.EndTime * sampleRate)

        alignments = append(alignments, WaveformAlignment{
            StartSample: startSample,
            EndSample:   endSample,
            Segment:     seg,
        })
    }

    return alignments
}

This function produces exact sample boundaries that you can pass to frontend waveform libraries or backend audio processing pipelines.

Step 5: Filter Transcripts by Interaction ID and Participant Role

The transcript payload contains all participant turns. You often need to isolate agent speech, customer speech, or system prompts. The following function filters segments by participant role and interaction ID.

func filterSegments(segments []Segment, participants []Participant, targetRole string, targetInteractionId string) []Segment {
    roleMap := make(map[string]string)
    for _, p := range participants {
        roleMap[p.Id] = p.Role
    }

    var filtered []Segment
    for _, seg := range segments {
        speakerRole := roleMap[seg.SpeakerId]
        if speakerRole == targetRole {
            filtered = append(filtered, seg)
        }
    }

    return filtered
}

You pass targetRole as "agent", "customer", or "system". The function builds a lookup map to avoid repeated linear scans, ensuring O(n) performance.

Step 6: Store Transcripts in Object Storage for Archival and Generate Summary Reports

Archival requires uploading the processed JSON to object storage. You also need to generate summary metrics during the streaming phase to avoid a second pass. The following function calculates duration, turn count, average confidence, and uploads the payload to AWS S3.

type TranscriptSummary struct {
    InteractionId    string  `json:"interaction_id"`
    TotalDuration    float64 `json:"total_duration_seconds"`
    TotalTurns       int     `json:"total_turns"`
    AgentTurns       int     `json:"agent_turns"`
    CustomerTurns    int     `json:"customer_turns"`
    AvgConfidence    float64 `json:"avg_confidence"`
    ArchivedAt       string  `json:"archived_at"`
    StorageLocation  string  `json:"storage_location"`
}

func processAndArchiveTranscript(s3Client *s3.Client, metadata *TranscriptMetadata, segments []Segment, bucket string) (*TranscriptSummary, error) {
    var totalConfidence float64
    var agentTurns, customerTurns int
    var maxEndTime float64

    for _, seg := range segments {
        totalConfidence += seg.Confidence
        if seg.EndTime > maxEndTime {
            maxEndTime = seg.EndTime
        }

        // Infer role from participant mapping
        for _, p := range metadata.Participants {
            if p.Id == seg.SpeakerId {
                if p.Role == "agent" {
                    agentTurns++
                } else if p.Role == "customer" {
                    customerTurns++
                }
                break
            }
        }
    }

    avgConfidence := 0.0
    if len(segments) > 0 {
        avgConfidence = totalConfidence / float64(len(segments))
    }

    // Serialize payload for storage
    payload, err := json.MarshalIndent(map[string]interface{}{
        "transcript": segments,
        "participants": metadata.Participants,
    }, "", "  ")
    if err != nil {
        return nil, fmt.Errorf("failed to marshal transcript: %w", err)
    }

    // Upload to S3
    key := fmt.Sprintf("transcripts/%s.json", metadata.Conversation)
    _, err = s3Client.PutObject(context.Background(), &s3.PutObjectInput{
        Bucket:      aws.String(bucket),
        Key:         aws.String(key),
        Body:        bytes.NewReader(payload),
        ContentType: aws.String("application/json"),
    })
    if err != nil {
        return nil, fmt.Errorf("failed to upload to S3: %w", err)
    }

    summary := &TranscriptSummary{
        InteractionId:   metadata.Conversation,
        TotalDuration:   maxEndTime,
        TotalTurns:      len(segments),
        AgentTurns:      agentTurns,
        CustomerTurns:   customerTurns,
        AvgConfidence:   avgConfidence,
        ArchivedAt:      time.Now().UTC().Format(time.RFC3339),
        StorageLocation: fmt.Sprintf("s3://%s/%s", bucket, key),
    }

    return summary, nil
}

Complete Working Example

package main

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

    "github.com/MyPureCloud/platform-client-v2-go/platformclientv2"
    "github.com/aws/aws-sdk-go-v2/aws"
    "github.com/aws/aws-sdk-go-v2/config"
    "github.com/aws/aws-sdk-go-v2/service/s3"
)

type TranscriptMetadata struct {
    Self         string        `json:"self"`
    DownloadUrl  string        `json:"downloadUrl,omitempty"`
    Conversation string        `json:"conversation"`
    Participants []Participant `json:"participants"`
    Transcript   []Segment     `json:"transcript"`
}

type Participant struct {
    Id   string `json:"id"`
    Name string `json:"name"`
    Role string `json:"role"`
}

type Segment struct {
    StartTime  float64 `json:"start_time"`
    EndTime    float64 `json:"end_time"`
    Text       string  `json:"text"`
    SpeakerId  string  `json:"speaker_id"`
    Confidence float64 `json:"confidence"`
}

type WaveformAlignment struct {
    StartSample int
    EndSample   int
    Segment     Segment
}

type TranscriptSummary struct {
    InteractionId   string  `json:"interaction_id"`
    TotalDuration   float64 `json:"total_duration_seconds"`
    TotalTurns      int     `json:"total_turns"`
    AgentTurns      int     `json:"agent_turns"`
    CustomerTurns   int     `json:"customer_turns"`
    AvgConfidence   float64 `json:"avg_confidence"`
    ArchivedAt      string  `json:"archived_at"`
    StorageLocation string  `json:"storage_location"`
}

func initGenesysClient() *platformclientv2.Client {
    ctx := context.Background()
    platformClient := platformclientv2.NewClient()
    platformClient.SetEnvironment(platformclientv2.PureCloudEnvUs)

    oauthConfig := &platformclientv2.OAuthConfig{
        ClientId:     os.Getenv("GENESYS_CLIENT_ID"),
        ClientSecret: os.Getenv("GENESYS_CLIENT_SECRET"),
        PrivateKey:   os.Getenv("GENESYS_PRIVATE_KEY"),
        JwtConfig:    os.Getenv("GENESYS_JWT_CONFIG"),
    }
    platformClient.SetOAuthConfig(oauthConfig)

    _, err := platformClient.AuthClient().ClientCredentialsToken(ctx)
    if err != nil {
        log.Fatalf("Authentication failed: %v", err)
    }
    return platformClient
}

func fetchTranscriptMetadata(client *platformclientv2.Client, conversationId string) (*TranscriptMetadata, error) {
    ctx := context.Background()
    url := fmt.Sprintf("https://api.mypurecloud.com/api/v2/conversations/media/%s/transcripts", conversationId)
    
    req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
    if err != nil {
        return nil, fmt.Errorf("request creation failed: %w", err)
    }

    token, err := client.AuthClient().ClientCredentialsToken(ctx)
    if err != nil {
        return nil, fmt.Errorf("token retrieval failed: %w", err)
    }
    req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", token.AccessToken))
    req.Header.Set("Accept", "application/json")

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

    if resp.StatusCode == http.StatusTooManyRequests {
        time.Sleep(2 * time.Second)
        return fetchTranscriptMetadata(client, conversationId)
    }

    if resp.StatusCode != http.StatusOK {
        body, _ := io.ReadAll(resp.Body)
        return nil, fmt.Errorf("API error %d: %s", resp.StatusCode, string(body))
    }

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

func downloadTranscriptPayload(client *platformclientv2.Client, conversationId string) (*http.Response, error) {
    metadata, err := fetchTranscriptMetadata(client, conversationId)
    if err != nil {
        return nil, err
    }

    if metadata.DownloadUrl == "" {
        return nil, fmt.Errorf("no download URL available")
    }

    req, err := http.NewRequest(http.MethodGet, metadata.DownloadUrl, nil)
    if err != nil {
        return nil, fmt.Errorf("download request creation failed: %w", err)
    }

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

    if resp.StatusCode == http.StatusForbidden || resp.StatusCode == http.StatusGone {
        log.Println("Presigned URL expired. Refreshing...")
        time.Sleep(1 * time.Second)
        return downloadTranscriptPayload(client, conversationId)
    }

    if resp.StatusCode != http.StatusOK {
        resp.Body.Close()
        return nil, fmt.Errorf("download failed with status %d", resp.StatusCode)
    }

    return resp, nil
}

func alignSegmentsToWaveform(segments []Segment, sampleRate float64) []WaveformAlignment {
    alignments := make([]WaveformAlignment, 0, len(segments))
    for _, seg := range segments {
        alignments = append(alignments, WaveformAlignment{
            StartSample: int(seg.StartTime * sampleRate),
            EndSample:   int(seg.EndTime * sampleRate),
            Segment:     seg,
        })
    }
    return alignments
}

func processAndArchiveTranscript(s3Client *s3.Client, metadata *TranscriptMetadata, segments []Segment, bucket string) (*TranscriptSummary, error) {
    var totalConfidence float64
    var agentTurns, customerTurns int
    var maxEndTime float64

    roleMap := make(map[string]string)
    for _, p := range metadata.Participants {
        roleMap[p.Id] = p.Role
    }

    for _, seg := range segments {
        totalConfidence += seg.Confidence
        if seg.EndTime > maxEndTime {
            maxEndTime = seg.EndTime
        }
        if roleMap[seg.SpeakerId] == "agent" {
            agentTurns++
        } else if roleMap[seg.SpeakerId] == "customer" {
            customerTurns++
        }
    }

    avgConfidence := 0.0
    if len(segments) > 0 {
        avgConfidence = totalConfidence / float64(len(segments))
    }

    payload, err := json.MarshalIndent(map[string]interface{}{
        "transcript":   segments,
        "participants": metadata.Participants,
    }, "", "  ")
    if err != nil {
        return nil, fmt.Errorf("marshal failed: %w", err)
    }

    key := fmt.Sprintf("transcripts/%s.json", metadata.Conversation)
    _, err = s3Client.PutObject(context.Background(), &s3.PutObjectInput{
        Bucket:      aws.String(bucket),
        Key:         aws.String(key),
        Body:        bytes.NewReader(payload),
        ContentType: aws.String("application/json"),
    })
    if err != nil {
        return nil, fmt.Errorf("S3 upload failed: %w", err)
    }

    return &TranscriptSummary{
        InteractionId:   metadata.Conversation,
        TotalDuration:   maxEndTime,
        TotalTurns:      len(segments),
        AgentTurns:      agentTurns,
        CustomerTurns:   customerTurns,
        AvgConfidence:   avgConfidence,
        ArchivedAt:      time.Now().UTC().Format(time.RFC3339),
        StorageLocation: fmt.Sprintf("s3://%s/%s", bucket, key),
    }, nil
}

func main() {
    conversationId := os.Getenv("GENESYS_CONVERSATION_ID")
    if conversationId == "" {
        log.Fatal("GENESYS_CONVERSATION_ID environment variable required")
    }

    genesysClient := initGenesysClient()
    ctx := context.Background()
    awsConfig, err := config.LoadDefaultConfig(ctx)
    if err != nil {
        log.Fatalf("AWS config load failed: %v", err)
    }
    s3Client := s3.NewFromConfig(awsConfig)

    resp, err := downloadTranscriptPayload(genesysClient, conversationId)
    if err != nil {
        log.Fatalf("Download failed: %v", err)
    }
    defer resp.Body.Close()

    var metadata TranscriptMetadata
    if err := json.NewDecoder(resp.Body).Decode(&metadata); err != nil {
        log.Fatalf("Decode failed: %v", err)
    }

    alignments := alignSegmentsToWaveform(metadata.Transcript, 48000.0)
    log.Printf("Aligned %d segments to 48kHz waveform", len(alignments))

    summary, err := processAndArchiveTranscript(s3Client, &metadata, metadata.Transcript, "genesys-transcript-archive")
    if err != nil {
        log.Fatalf("Archive failed: %v", err)
    }

    summaryJSON, _ := json.MarshalIndent(summary, "", "  ")
    fmt.Println(string(summaryJSON))
}

Common Errors & Debugging

Error: 401 Unauthorized

• Cause: Expired OAuth token, invalid client credentials, or missing interaction:read scope.
• Fix: Verify environment variables. The SDK automatically refreshes tokens, but initial validation fails if credentials are malformed. Ensure your OAuth client in Genesys Cloud is configured for Client Credentials or JWT with the correct scopes.
• Code Fix: Check GENESYS_CLIENT_ID and GENESYS_CLIENT_SECRET in your environment. Revoke and regenerate the private key if rotation occurred.

Error: 403 Forbidden on Presigned URL

• Cause: The presigned download link expired. Genesys Cloud S3 links typically expire after 15 minutes.
• Fix: Implement the retry logic shown in Step 2. The function detects 403 or 410, sleeps briefly, and re-fetches the metadata to obtain a fresh URL.
• Code Fix: Ensure your HTTP client does not follow redirects blindly. Some presigned URLs issue 302 redirects to S3. Use http.DefaultClient which handles redirects automatically, or configure CheckRedirect if you need custom logic.

Error: 429 Too Many Requests

• Cause: Exceeding Genesys Cloud API rate limits. The Media API enforces per-client and per-tenant throttling.
• Fix: Implement exponential backoff. The example sleeps for 2 seconds on 429. For production, use a jittered backoff strategy.
• Code Fix: Replace the static sleep with a retry loop that doubles the delay up to 30 seconds, and respects the Retry-After header when present.

Error: JSON Decode Mismatch

• Cause: Genesys Cloud occasionally returns legacy transcript formats or empty arrays when transcription is still processing.
• Fix: Check the status field in the metadata response. If status is queued or processing, poll the endpoint until it returns completed.
• Code Fix: Add a polling loop before calling downloadTranscriptPayload that checks metadata.Transcript length and retries every 5 seconds.

Official References

• Genesys Cloud CX Media API Documentation
• Genesys Cloud CX Interactions API Documentation
• Platform Client V2 Go SDK Reference
• AWS SDK for Go v2 S3 Documentation