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sanjeed5/symphony

Symphony turns project work into isolated, autonomous implementation runs, allowing teams to manage work instead of supervising coding agents.

Symphony

Symphony turns project work into isolated, autonomous implementation runs, allowing teams to manage
work instead of supervising coding agents.

Symphony demo video preview

In this demo video, Symphony monitors a Linear board for work and spawns agents to handle the tasks. The agents complete the tasks and provide proof of work: CI status, PR review feedback, complexity analysis, and walkthrough videos. When accepted, the agents land the PR safely. Engineers do not need to supervise Codex; they can manage the work at a higher level.

Warning

Symphony is a low-key engineering preview for testing in trusted environments.

Running Symphony

Requirements

Symphony works best in codebases that have adopted
harness engineering. Symphony is the next step --
moving from managing coding agents to managing work that needs to get done.

Option 1. Make your own

Tell your favorite coding agent to build Symphony in a programming language of your choice:

Implement Symphony according to the following spec:
https://github.com/openai/symphony/blob/main/SPEC.md

Option 2. Use our experimental reference implementation

Check out elixir/README.md for instructions on how to set up your environment
and run the Elixir-based Symphony implementation. You can also ask your favorite coding agent to
help with the setup:

Set up Symphony for my repository based on
https://github.com/openai/symphony/blob/main/elixir/README.md


License

This project is licensed under the Apache License 2.0.

Languages

Elixir95.1%Python3.3%CSS1.4%Makefile0.2%Shell0.1%

Contributors

Apache License 2.0
Created March 10, 2026
Updated March 10, 2026