Build your own code editor and talk to it with a full-duplex voice layer
He had Claude Code build a code editor shaped around how he works, and talks to his agents through Full-Duplex Code, an open-source voice layer for Claude Code and Codex.
Source
@Sebasti54919704 on X · 2026-10-18
Written in our own words. Credit to the original author. Link checked 2026-10-21.
What they did
He had Claude Code build a code editor shaped around how he works, and talks to his agents through Full-Duplex Code, an open-source voice layer for Claude Code and Codex.
Result (as claimed)
The editor took 100 minutes; the voice layer is open source.
Tools they used
Cost: Claude Code: from $17/mo; OpenAI Codex: free plan, paid from $8/mo.
Set it up
Pick a contained repo or task
Start on a branch or side project where mistakes are cheap.
Install and configure
Set up Claude Code, OpenAI Codex. Read what it can run on your machine and limit permissions where possible.
Run it on a real task
Give it a well-scoped issue and let it work. Review the diff like any pull request.
Add guardrails
Keep tests and CI in the loop, and never let an agent push to main or touch production secrets unattended.
Copy the full setup prompt
Paste into your agent and it will walk you through the setup, asking before anything that sends, posts or spends.
You are helping me set up this AI use case end to end in Claude Code. Goal: Build your own code editor and talk to it with a full-duplex voice layer What the original author did: He had Claude Code build a code editor shaped around how he works, and talks to his agents through Full-Duplex Code, an open-source voice layer for Claude Code and Codex. Reported result (as claimed by the author): The editor took 100 minutes; the voice layer is open source. Source: https://x.com/Sebasti54919704/status/2111863372178141611 Tools they used: Claude Code, OpenAI Codex Category: Dev & ops Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
You are helping me set up this AI use case end to end in Codex. Goal: Build your own code editor and talk to it with a full-duplex voice layer What the original author did: He had Claude Code build a code editor shaped around how he works, and talks to his agents through Full-Duplex Code, an open-source voice layer for Claude Code and Codex. Reported result (as claimed by the author): The editor took 100 minutes; the voice layer is open source. Source: https://x.com/Sebasti54919704/status/2111863372178141611 Tools they used: Claude Code, OpenAI Codex Category: Dev & ops Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
You are helping me set up this AI use case end to end in Grok Bot. Goal: Build your own code editor and talk to it with a full-duplex voice layer What the original author did: He had Claude Code build a code editor shaped around how he works, and talks to his agents through Full-Duplex Code, an open-source voice layer for Claude Code and Codex. Reported result (as claimed by the author): The editor took 100 minutes; the voice layer is open source. Source: https://x.com/Sebasti54919704/status/2111863372178141611 Tools they used: Claude Code, OpenAI Codex Category: Dev & ops Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
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Guides for this use case
How to control Claude Code and Codex by voice · How to run multiple coding agents together · How to vibe code an app with Claude Code · How to use Claude Code and Codex together
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