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View Langfuse observation (Generation/Span) details. Use when checking specific LLM call input/output, debugging issues, or analyzing costs.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
List all Langfuse models with their pricing. Use when checking model costs, verifying pricing configuration, or getting an overview of model definitions.
List Langfuse sessions. Use when checking user sessions, analyzing conversation flows, or monitoring session activity.
View Langfuse session details with all traces. Use when analyzing conversation flows, checking session costs, or debugging multi-turn interactions.
List Langfuse traces with filtering options. Use when checking recent LLM calls, debugging issues, or monitoring costs.
Create or update Langfuse model pricing. Use when setting up new models, updating pricing, or configuring model costs.
List all Langfuse prompts with their labels and versions. Use when checking available prompts, verifying label assignments, or getting an overview of prompt status.
| name | langfuse-observation-view |
| description | View Langfuse observation (Generation/Span) details. Use when checking specific LLM call input/output, debugging issues, or analyzing costs. |
| license | MIT |
| compatibility | Node.js 18+ (native fetch required) |
| metadata | {"author":"neuradex","category":"observability"} |
| allowed-tools | ["Bash(npx tsx *scripts/langfuse-observation-view.ts*)"] |
Display detailed information for a specific Observation (Generation/Span).
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) |
npx tsx scripts/langfuse-observation-view.ts <observationId>
npx tsx scripts/langfuse-observation-view.ts <observationId> --full
npx tsx scripts/langfuse-observation-view.ts <observationId> --json
Langfuse Observation Detail
===========================
ID: obs_abc123
Trace ID: trace_xyz789
Type: GENERATION
Name: chat
Start Time: 2026-01-21 10:30:45
Duration: 2.35s
Level: DEFAULT
--- Model Info ---
Model: qwen/qwen3-32b
Parameters: {"temperature":0.7}
--- Usage & Cost ---
Input Tokens: 1500
Output Tokens: 350
Total Tokens: 1850
Input Cost: $0.000435
Output Cost: $0.000207
Total Cost: $0.000642
--- Prompt ---
Prompt: librarian-system (v3)
Prompt ID: prompt_def456
--- Input ---
[{"role":"system","content":"You are..."}]
--- Output ---
Here are the search results...
| Field | Description |
|---|---|
| Type | GENERATION (LLM call), SPAN (processing span), EVENT (event) |
| Duration | Processing time |
| Model | Model used |
| Input/Output Tokens | Token usage |
| Calculated Cost | Computed cost |
| Prompt | Langfuse prompt used |