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SKILL verified MIT Self-run

Langfuse Traces

skill-alberduris-skills-langfuse-traces · by alberduris

Query Langfuse traces for debugging LLM calls, analyzing token usage, and investigating workflow executions. Use when debugging AI/LLM behavior, checking trace data, or analyzing observability metrics.

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Install

$ agentstack add skill-alberduris-skills-langfuse-traces

✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • ✓ Prompt-injection patterns
  • ✓ Secret / credential exfiltration
  • ✓ Dangerous shell & filesystem operations
  • ✓ Untrusted network calls
  • ✓ Known-malicious package signatures

What it can access

  • ● Network access Used
  • ✓ Filesystem access No
  • ✓ Shell / process execution No
  • ● Environment & secrets Used
  • ✓ Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

View the full security report →

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Reliability & compatibility

✓ Security review passed
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○ 4mo ago

Declared compatibility

Claude CodeClaude Desktop

Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.

Preview Execution monitoring

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How agent discovery & health will work →
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About

Langfuse Traces Skill

Query and analyze Langfuse trace data directly from Claude Code.

Usage

Invoke the query script using the base directory shown above:

bash /scripts/query.sh  [options]

Commands

| Command | Args | Description | |---------|------|-------------| | traces | [limit] [sessionid] [name] | List recent traces | | trace | traceid | Get full trace with observations | | observations | [limit] [trace_id] | List spans/generations | | sessions | [limit] | List sessions | | summary | [limit] | Compact one-line-per-trace view |

Examples

# List last 20 traces
bash /scripts/query.sh traces 20

# Get specific trace detail
bash /scripts/query.sh trace tr-abc123

# List observations for a trace
bash /scripts/query.sh observations 50 tr-abc123

# Quick summary of recent activity
bash /scripts/query.sh summary 10

Credentials

The script reads credentials from .env.local, .env, or environment variables:

LANGFUSE_PUBLIC_KEY=pk-lf-...
LANGFUSE_SECRET_KEY=sk-lf-...
LANGFUSE_BASE_URL=https://cloud.langfuse.com  # optional, default

Requirements

  • curl (standard on macOS/Linux)
  • jq for JSON parsing

Output

All commands return JSON (piped through jq). Use jq filters for specific fields:

bash /scripts/query.sh traces 5 | jq '.data[].name'

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.

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