ToFu: A White-Box, Token-Efficient Agent Harness for Researchers

• URL: http://arxiv.org/abs/2607.11423v1
• Date: Mon, 13 Jul 2026 11:26:06 GMT
• Title: ToFu: A White-Box, Token-Efficient Agent Harness for Researchers
• Abstract summary: ToFu is an agentic harness for researchers that reads your files, edits files, runs commands, and integrates with your development tools.<n>As a research assistant, it supports practical research with superior token efficiency, lower cost, and multilingual capability.<n>As a research object, ToFu provides a white-box agentic harness that allows researchers to inspect, modify, and evaluate its orchestration logic, tool-use behavior, and harness design.
• Score: 73.72929185946842
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Agentic coding tools present new opportunities to transform research workflows. The performance of agent systems built depends on both large language models (LLMs) and the harness around LLMs, which is the orchestration code that determines an agent's behavior. We present ToFu, an agentic harness for researchers that reads your codebase, edits files, runs commands, and integrates with your development tools. ToFu plays a dual role in research. As a research assistant, it supports practical research workflows with superior token efficiency, lower cost, and multilingual capability compared with existing agentic harnesses. Its release under the MIT License further enables local deployment for privacy-sensitive users. As a research object, ToFu provides a white-box agentic harness that allows researchers to inspect, modify, and evaluate its orchestration logic, tool-use behavior, and harness design, while retaining strong benchmark performance and an application-level user experience.

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