Langfuse Session View

Display detailed information and all traces for a specific session.

Setup

Set the following environment variables before use:

Variable	Required	Description
LANGFUSE_PUBLIC_KEY	Yes	Langfuse public key
LANGFUSE_SECRET_KEY	Yes	Langfuse secret key
LANGFUSE_HOST or LANGFUSE_BASE_URL	No	Langfuse host URL (default: https://us.cloud.langfuse.com)

When to Use

• Checking specific session details
• Analyzing conversation flows
• "Show me all traces for this session"
• Investigating by session ID

Commands

1. Get Session Details

npx tsx scripts/langfuse-session-view.ts <sessionId>

2. Specify Trace Count

npx tsx scripts/langfuse-session-view.ts <sessionId> --limit=100

3. JSON Output

npx tsx scripts/langfuse-session-view.ts <sessionId> --json

Output Example

Langfuse Session Detail
=======================

Session ID: se:9ed69537-5952-40ee-9d98-5e1197fc5726
Created:    2025-01-15 10:30:45
Project:    project-123

Summary:
  Total Traces: 74
  Total Cost:   $0.1234
  Avg Latency:  856ms

Trace Types:
  chunk-extraction: 70
  chunking: 3
  source-parse: 1

Traces (50 of 74):
----------------------------------------------------------------------------------------------------
Timestamp           Name                                    Latency     Cost        ID
----------------------------------------------------------------------------------------------------
2025-01-15 10:30:45 chunk-extraction:abc123                 1234ms      $0.0150     abc123...
2025-01-15 10:30:46 chunk-extraction:def456                 856ms       $0.0080     def456...

Fields

Field	Description
Session ID	Session identifier
Created	Creation timestamp
Project	Project ID
Total Traces	Total number of traces in the session
Total Cost	Estimated total cost for the session
Avg Latency	Average processing time
Trace Types	Trace count by name