OpenAI Symphony — From Supervising Agents to Managing Work

OpenAI has released a new open-source project called Symphony that automates the entire workflow from GitHub Issues (Linear) to autonomous agent execution and PR creation. It represents a paradigm shift from “supervising coding agents” to “managing work.”

What is Symphony?

Symphony is a long-running automation service that continuously monitors an issue tracker (Linear in this version), creates isolated workspaces for each issue, and runs a coding agent session inside each workspace.

Traditional approach:

• Developer gives instructions to an agent
• Developer supervises the agent’s work
• Developer reviews the output

With Symphony:

• Monitors Linear board for new issues
• Automatically creates isolated workspace
• Runs agent to complete the task
• Generates PR with proof of work
• Developer only manages “work flow”

Key Features

1. Issue Tracker Integration: Monitors Linear for new work items automatically
2. Isolated Workspaces: Creates separate working environment for each issue
3. Autonomous Execution: Launches Codex in app-server mode within the workspace
4. Proof of Work: Generates CI status, PR review feedback, complexity analysis, walkthrough videos
5. Safe Merging: PRs are safely merged after human approval

Technical Specifications

• Implementation: Elixir/OTP (prototype)
• Workflow Definition: Uses WORKFLOW.md in repository for version-controlled prompts
• Concurrency: Up to 10 parallel agents (configurable)
• Auto-cleanup: Automatically cleans up when issues move to terminal states (Done, Closed)
• Security: Default safe sandbox policy (workspace-write)

Relation to “Harness Engineering”

Symphony builds on OpenAI’s “Harness Engineering” approach announced the same day. For agents to work effectively, human-readable tests, specifications, and validations are prerequisites. Symphony is the next step—automating the flow of work itself.

Future Plans

OpenAI positions Symphony as a “low-key engineering preview” for testing in trusted environments. They encourage implementations in any programming language based on SPEC.md.

Upcoming:

• Multiple issue tracker support
• More flexible workflow definitions
• Enterprise-grade security enhancements

Getting Started

git clone https://github.com/openai/symphony
cd symphony/elixir
mise install
mix setup
mix build
./bin/symphony ./WORKFLOW.md

Conclusion

Symphony represents a new paradigm where AI agents are not “tools” to be used but “workers” to be managed. Developers may shift from supervising individual coding agents to managing entire work flows.

• Repository: https://github.com/openai/symphony
• Specification: https://github.com/openai/symphony/blob/main/SPEC.md