langsmith-fetch

name	langsmith-fetch
description	Fetch and analyze traces from LangSmith/LangChain observability platform for debugging and optimization.
category	debugging
version	1

LangSmith Fetch

Purpose

Retrieve execution traces from LangSmith to diagnose agent behavior and optimize prompts.

Key Functions

1. Trace Retrieval

• Fetch traces by run_id, project, or time range
• Extract prompts, responses, and metadata
• Analyze token usage and latency

2. Pattern Analysis

• Identify common failure patterns in prompt chains
• Find token waste in verbose responses
• Detect hallucination or inconsistency patterns

3. Optimization Suggestions

• Recommend prompt refinements based on trace analysis
• Suggest temperature/top_p adjustments
• Identify redundant chain steps

Protocol

trace_id → langsmith.getTrace(trace_id) → analyze() → suggest_fixes()

Integration

Activated when agent debugging requires historical execution context.