Cindy: An Open-Source Agent Uniting Claude Code and Codex Across Desktop and Mobile

According to Cindy's official X account, Cindy is an open-source agent that brings Claude Code, Codex, and other harnesses together to do work on desktop and phone. The account also said, "Cindy made today's GitHub top 1."

Image source: https://cindy.app

Cindy's official X account describes its value as bringing these capabilities into one workspace for managing projects and tasks, continuing work by phone, and running scheduled tasks.

Multi-Harness Integration and Host-Layer Coordination

Cindy's official X account says it coordinates task delegation and messaging in the host layer while each agent runs on its own harness.

• Unified Workspace: Combine disparate coding harnesses like Claude Code and Codex within a single operational interface.
• Remote and Multi-Device Control: Users can designate a "main computer" among multiple computers signed into the same account. With remote control enabled and Cindy online on that computer, messages from another computer can be executed there. Cindy does not switch automatically when the main computer is offline.
• Security and Network Policies: Cindy's official X account says Cindy defaults to Auto Review, while network access depends on the harness. Codex keeps sandboxed command networking restricted unless approved; Claude Code uses tool permissions without a Cindy-imposed domain allowlist. Cindy does not currently provide a unified domain policy across both.

Practical Workflow Enhancements

Cindy's official X account describes scheduled tasks, document processing, and integrations with tools such as Feishu and email.

• Mobile Accessibility: Continue working by phone and follow up on tasks running on a desktop while away from the workstation.
• Task Automation: The official account lists scheduled research summaries, document processing, and plugins for tools such as Feishu and email as examples.

Sources

• Cindy Official X Account: @making_cindy
• Project Website: cindy.app