Start a deep research session: multi-source search (Tavily/Brave/arXiv/PubMed/Tushare) + CRAAP source evaluation + cross-verification → professional HTML/DOCX/PDF report.

IMPORTANT: This tool returns IMMEDIATELY with a task_id. The research runs in the background and takes ~8-12 minutes. After calling this tool, you MUST poll harness_status with the returned task_id every 30-60 seconds until status is "completed" or "failed". Do NOT wait idle — poll actively.

Workflow:

1. Call harness_research → get task_id (returns in <1 second)

2. Call harness_status with task_id every 30-60s to check progress

3. When status is "completed", harness_status returns the output file paths

Driven by affordable models like Kimi K2.5 (~$0.01/run).

Quick multi-source search without generating a full report. Returns structured results from Tavily, Brave, arXiv, and PubMed. Completes in seconds.

Check the progress of a research task started by harness_research.

After calling harness_research, you MUST poll this tool with the returned task_id every 30-60 seconds.

• status "running": research is in progress, keep polling

• status "completed": research is done, output file paths are included

• status "failed": an error occurred, error message is included

If no task_id is provided, lists all tasks.