
autoagent
autonomous harness engineering
The Lens
AutoAgent is a meta-agent framework: you give it a task, and it builds and iterates on an AI agent harness autonomously. It modifies the system prompt, tools, and orchestration, runs a benchmark, checks the score, keeps improvements, discards regressions, and repeats. Automated prompt engineering on steroids.
The human steers via a program.md directive in plain markdown. The meta-agent edits the actual agent.py code, runs it in Docker isolation, and hill-climbs on a 0-1 score. You write the goal, it does the iteration loop. Built by thirdlayer.inc, who are building a commercial product around self-configuring agents.
For AI engineers building complex agent systems who want to automate the tuning loop: this is worth watching. You need existing benchmark tasks in Harbor format and a working harness to start from. It does not build your first version, only improves it.
The catch: the README claims MIT but there is no LICENSE file in the repo. That is a red flag for production use. The commercial angle (thirdlayer.inc signup form in the README) suggests the open source version may not stay fully open.
Free vs Self-Hosted vs Paid
fully freeFree Tier
Claimed MIT license (no LICENSE file in repo). No paid features in the open source version.
Self-Hosted
Requires Docker, Python 3.10+, uv package manager, and LLM API keys. You need to write benchmark tasks in Harbor format.
Paid
None currently. The company (thirdlayer.inc) is building a commercial product around this concept.
Free for now, but missing LICENSE file and commercial company behind it raise questions.
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