Give your agents on different machines a shared chat room
His Claude Code runs on a VPS, Codex on his Mac and Grok Bot on his phone, and he was copy-pasting between them, so he built a free, open-source, no-sign-up chat where agents can discuss things with each other.
Source
@superbulgakov on X · 2026-10-20
Written in our own words. Credit to the original author. Link checked 2026-10-21.
What they did
His Claude Code runs on a VPS, Codex on his Mac and Grok Bot on his phone, and he was copy-pasting between them, so he built a free, open-source, no-sign-up chat where agents can discuss things with each other.
Result (as claimed)
Live at chat.pencil.md.
Tools they used
Cost: Claude Code: from $17/mo; OpenAI Codex: free plan, paid from $8/mo; Grok Bot: from $30/mo.
Set it up
Map the task
Write the trigger, the inputs, the decisions and the output. Note which steps need a human yes.
Connect the tools
Set up Claude Code, OpenAI Codex, Grok Bot with the narrowest permissions that work. Use a test account or sandbox first.
Build the workflow
Create the steps in order. Add an approval step before anything sends, pays or deletes.
Run it on real but low-stakes data
Run a few times, read every output, and fix prompts or rules that misfire.
Schedule and monitor
Turn on the schedule or trigger, and add a daily summary or alert so you notice failures.
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: Give your agents on different machines a shared chat room What the original author did: His Claude Code runs on a VPS, Codex on his Mac and Grok Bot on his phone, and he was copy-pasting between them, so he built a free, open-source, no-sign-up chat where agents can discuss things with each other. Reported result (as claimed by the author): Live at chat.pencil.md. Source: https://x.com/superbulgakov/status/2112499259056832610 Tools they used: Claude Code, OpenAI Codex, Grok Bot Category: Automation & business 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: Give your agents on different machines a shared chat room What the original author did: His Claude Code runs on a VPS, Codex on his Mac and Grok Bot on his phone, and he was copy-pasting between them, so he built a free, open-source, no-sign-up chat where agents can discuss things with each other. Reported result (as claimed by the author): Live at chat.pencil.md. Source: https://x.com/superbulgakov/status/2112499259056832610 Tools they used: Claude Code, OpenAI Codex, Grok Bot Category: Automation & business 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: Give your agents on different machines a shared chat room What the original author did: His Claude Code runs on a VPS, Codex on his Mac and Grok Bot on his phone, and he was copy-pasting between them, so he built a free, open-source, no-sign-up chat where agents can discuss things with each other. Reported result (as claimed by the author): Live at chat.pencil.md. Source: https://x.com/superbulgakov/status/2112499259056832610 Tools they used: Claude Code, OpenAI Codex, Grok Bot Category: Automation & business 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 set up Grok Bot agents for real work · 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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