Symphony is a system designed to transform project work into isolated, autonomous implementation runs, shifting the focus of development teams from direct supervision of coding agents to a higher-level management of work. The core methodology of Symphony involves orchestrating the execution of software development tasks by intelligent agents, such as OpenAI Codex, within a structured and automated workflow.

At its operational core, Symphony continuously monitors project management boards (e.g., a Linear board) for new or pending work items. Upon detecting a task, Symphony dynamically spawns one or more coding agents, allocating the specific task to them. These agents are then responsible for independently completing the assigned development work. The system is predicated on the concept of "harness engineering," suggesting that the target codebase must be structured in a way that facilitates automated interaction and verification, making it amenable to agent-driven development. Symphony builds upon this foundation, moving beyond mere agent management to managing the work itself.

Upon completion of a task, the agents do not simply submit code. Instead, they generate and provide a comprehensive "proof of work." This proof of work is a multi-faceted package designed to provide confidence in the agent's output without direct human code review. It encompasses:

1. CI status: The results from continuous integration tests, confirming code functionality and adherence to existing test suites.
2. PR review feedback: Automated analysis and suggestions for the pull request, potentially leveraging other AI models or static analysis tools.
3. Complexity analysis: Metrics pertaining to the code's structural complexity, cyclomatic complexity, or other maintainability indicators.
4. Walkthrough videos: Automated demonstrations or explanations of the implemented solution, detailing its functionality and changes.

This consolidated proof of work is presented for acceptance. If the proof of work is deemed satisfactory, signifying that the task has been correctly and robustly completed, Symphony automatically lands the associated pull request (PR) safely into the codebase. This entire process abstracts away the direct interaction with and supervision of individual coding agents, allowing human engineers to manage the work at a strategic level rather than supervising the minute details of agent execution. Symphony is presented as a low-key engineering preview intended for testing in trusted environments, emphasizing its experimental nature. The project is licensed under the Apache License 2.0.