Start from a complete brief
Codex receives the goal, links, constraints, and acceptance notes already stored with the work
Integration
Send product work to Codex in ChatGPT
Use the Codex path in ChatGPT to turn an initiative, bug, or todo into a coding prompt, or let a local Codex agent run it with progress tied to the original work item.
AI assistants and coding agents
Codex
One Horizon
Start from a complete brief
Stay hands-on or delegate
Review the same recorded run
Stay hands-on or delegate
Open one task in Codex in ChatGPT or assign work to a local agent running through Desktop, CLI, or Workflows
Review the same recorded run
Open the stored Codex thread later so progress and follow-up remain attached to the task
A direct path from product decision to Codex
Codex lives in ChatGPT, while One Horizon keeps ownership and delivery state around the run.
Open one task in Codex
Use Send to Codex when a developer wants to guide the work in a fresh Codex thread in ChatGPT.
Run Codex as a local agent
Assign bounded work to a saved local agent and follow its progress from the work item or queue.
Return to the recorded thread
Open a completed or failed run in Codex when you need to inspect, continue, or review the session.
For coding work that should remain accountable
Use Codex for implementation while the task, run, output, and review stay part of one delivery path.
Hands-on implementation
Launch a reviewed task into Codex in ChatGPT and guide the session yourself
Local delegated run
Give a bounded bug or todo to Codex on your machine and monitor the run
Workflow execution
Use Codex for a planned build or review step with the result returned to the workflow
Keep Codex connected to the work that matters
Move from brief to run to review without separating the coding session from its product goal.