MCPMark Trajectory Logs (mcpmark-v1-0905)

These logs are publicly available for research use. They capture end-to-end trajectories (prompts, tool calls, and outcomes) for MCPMark tasks across multiple MCP services and models.

Contents

Each task run produces a trajectory folder containing three files:

• meta.json: Metadata (task id, model, timestamps, status, etc.)
• messages.json: Turn-by-turn exchanges including model thoughts/tool calls
• execution.log: Key execution-time logs

Typical structure:

mcpmark-v1-0905/
  <model>__<mcp_service>/
    run-1/
      <category>__<task>/
        meta.json
        messages.json
        execution.log

Explore Logs in Your Browser

For fast browsing and inspection, use the MCPMark Trajectory Explorer. You can drag-and-drop either a single messages.json or a full trajectory folder (the three files above):

• Explorer: https://mcpmark.ai/explorer