marim-harness provides an embeddable coding-agent framework built on Pydantic AI. It offers both a Textual-based terminal user interface and a headless mode for automation and integration. The package is designed for developers who want to run, test, and embed LLM-powered coding agents in their own tools or workflows.
In the AI & ML space, marim-harness takes a focused approach. It focuses on integrating and running coding agents locally with both interactive TUI and headless operation. It is built as an open-source project for developers. marim-harness is open source under the Open Source license. The product ships for the command line, and it can be self-hosted.
Mateus C. Marim builds and maintains marim-harness, and the product first shipped in 2026. Key capabilities include Textual TUI, Headless Mode, and Embeddable Harness.
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