Agent Trace Intelligence MCP

Diagnose why your agent did what it did, and how to fix it.

The Problem

When an AI agent fails or behaves unexpectedly, existing tools tell you what happened: token counts, step logs, latency metrics. But they don't tell you why the agent made a wrong turn or how to fix it. Debugging agents means staring at raw traces and guessing.

The Solution

Agent traces show you what happened. This tool tells you why it went wrong and what to change. Pass in any agent trace JSON and get root causes, scores, and a concrete fix back. Zero instrumentation required.

Use it alongside LangSmith, Arize Phoenix, and W&B Weave. When your observability stack surfaces a failure, this is where you go to diagnose it.

Works in Cursor, Claude Desktop, VS Code (Copilot MCP), and any stdio MCP client.

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Install

# With uv (recommended)
uv add agent-trace-intelligence

# Or pip
pip install agent-trace-intelligence

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Quick Start: Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "agent-trace-intelligence": {
      "command": "uv",
      "args": ["run", "agent-trace-intelligence"],
      "env": {
        "AZURE_AI_API_KEY": "your-azure-ai-foundry-key",
        "AZURE_AI_API_BASE": "https://your-resource.cognitiveservices.azure.com/",
        "JUDGE_MODEL": "azure_ai/claude-opus-4-6"
      }
    }
  }
}

No Azure? Use OpenAI instead:

{
  "env": {
    "JUDGE_MODEL": "gpt-4o-mini",
    "OPENAI_API_KEY": "sk-..."
  }
}

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Tools Reference

Tool	Description	API Key?	Speed
judge_trace	Root cause analysis, 4-dimension scoring, grade, verdict, plain-English explanation	Required	~3-5s
trace_breakdown	Step-by-step scoring with flags (REDUNDANT_TOOL_CALL, REASONING_GAP, etc.)	Required	~3-5s
efficiency_score	Deterministic token/latency/redundancy analysis	Not required	Instant

judge_trace

Input:

{
  "trace": "<JSON string of AgentTrace>",
  "goal": "optional: override the goal stated in the trace"
}

Output:

{
  "overall_score": 0.82,
  "grade": "B",
  "verdict": "needs optimisation",
  "dimension_scores": {
    "goal_completion": 0.9,
    "reasoning_clarity": 0.8,
    "tool_usage": 0.75,
    "output_quality": 0.83
  },
  "summary": "Agent completed the goal but made one redundant search call",
  "root_causes": [
    "Unnecessary second search call at step 4 caused token inflation. Result was already available from step 2",
    "Agent did not validate tool output before proceeding to the next step"
  ],
  "strengths": ["Clear reasoning steps", "Correct initial tool selection"],
  "weaknesses": ["Redundant tool call on step 4", "Incomplete final output"],
  "recommendation": "Remove duplicate search call at step 4. Saves ~400 tokens",
  "explain_like_im_5": "The agent searched the internet twice for the same thing when it only needed to do it once, which wasted time and money.",
  "confidence": "high"
}

Verdict values: "production-ready" | "needs optimisation" | "broken"

trace_breakdown

Per-step scoring with flags:

• REDUNDANT_TOOL_CALL: same tool called with same/similar input
• HALLUCINATED_TOOL: tool referenced that doesn't exist in the trace
• REASONING_GAP: response doesn't follow from previous tool output
• GOAL_DRIFT: agent deviates from the original goal
• PREMATURE_STOP: agent stopped before completing the goal

efficiency_score

No API key required. Deterministic analysis of:

• Token usage (total, per-step, rating: good/moderate/high)
• Tool redundancy (redundant calls, failed calls, redundancy rate)
• Latency (total ms, slowest step/tool, rating: fast/acceptable/slow)
• overall_efficiency_score (0.0-1.0 weighted composite)

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AgentTrace Schema

All tools accept a trace JSON conforming to this schema:

{
  "trace_id": "optional",
  "agent_name": "optional",
  "goal": "What was the agent trying to do?",
  "model": "gpt-4o",
  "total_tokens": 820,
  "total_latency_ms": 3200,
  "final_output": "The agent's final response",
  "steps": [
    {
      "step_number": 1,
      "role": "user",
      "content": "User message"
    },
    {
      "step_number": 2,
      "role": "assistant",
      "content": "I'll search for that.",
      "token_count": 120
    },
    {
      "step_number": 3,
      "role": "tool",
      "tool_call": {
        "tool_name": "web_search",
        "input": {"query": "..."},
        "output": "Search results...",
        "latency_ms": 1200,
        "error": null
      }
    }
  ]
}

All fields except steps are optional. Works with whatever you can provide.

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Format Adapters

Optional helpers to convert native framework traces to AgentTrace format:

from agent_trace_intelligence.formats import (
    adapt_langchain,      # LangChain callback handler output
    adapt_openai_agents,  # OpenAI Agents SDK RunStep objects
    adapt_autogen,        # AutoGen message history
    adapt_maf,            # MAF GA 1.0 (OpenTelemetry GenAI spans)
)

# Convert and pass directly to any tool
trace = adapt_langchain(raw_langchain_output)

These are convenience helpers. The tools accept any valid AgentTrace JSON regardless of framework.

Adapter	Framework	Status
adapt_langchain	LangChain callback handler / LangSmith export	v1
adapt_openai_agents	OpenAI Agents SDK (RunStep objects)	v1
adapt_autogen	AutoGen legacy (pyautogen) message history	v1
adapt_maf	Microsoft Agent Framework GA 1.0 (OTel spans)	v1

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Model Support & Cost Guidance

Configure via JUDGE_MODEL env var. Zero code change required.

Use Case	Recommended Model	Cost
Best quality (default)	azure_ai/claude-opus-4-6	~$0.015/trace
Fast Azure alternative	azure_ai/gpt-4.1	~$0.008/trace
Open source / no Azure	gpt-4o-mini	~$0.002/trace
CI/CD batch evaluation	gpt-4o-mini	< $0.01/trace
Anthropic direct	claude-haiku-4-5-20251001	~$0.001/trace

For CI/CD use: Set JUDGE_MODEL=gpt-4o-mini to keep costs under $0.01 per trace. For interactive debugging, azure_ai/claude-opus-4-6 gives the best root cause reasoning.

efficiency_score is always free. No model call, no API key.

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Future Direction (v2)

• Pattern detection across multiple traces to surface recurring failure modes
• Batch trace analysis for CI/CD quality gates
• Enterprise governance signals to flag traces that violate defined agent policies
• SSE transport for enterprise internal MCP deployment

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License

MIT. See LICENSE