Work
Local phone + SMS answered by Grok voice, with summaries and a spend cap
You miss calls and texts while working, and robotic IVR feels worse than voicemail.
What hurt
FAI (@faiAI0) built a live phone+SMS assistant with Grok Bot in an afternoon. Not affiliated with xAI.
What to install or create
Telnyx number (~$1/mo) + xAI realtime voice; Cloudflare Worker as webhook doorbell; SIP only from Telnyx IPs; tools to take a message, check availability, transfer; SMS auto-reply with STOP; daily spend cap; summaries to inbox and chat.
Bots
No new bot. Follow the first-run steps.
Plugins
Gmail
Optional
Routines
None on the first run. Watch one manual pass first.
The prompt
This is a tip, not a pasteable system prompt. The author did not publish one. Follow the first-run steps.
First run
- 1Read https://x.com/faiAI0/status/2109099983526101223 (credit @faiAI0).
- 2Buy a Telnyx voice+SMS number and get an xAI API key.
- 3Ask Grok Bot to wire SIP, the Cloudflare Worker doorbell and a take-message prompt.
- 4Set a daily spend cap and transfer-to-me tool; test one inbound call.
- 5Turn on SMS with STOP handling; confirm summaries land in chat and email.
Approval fence
Transfers, SMS sends and any spend sit behind your caps and approvals.
What to tweak
Keys stay local; the Worker is only a signed doorbell.
Source
FAI @faiAI0 · Original post
Not affiliated with xAI. We did not write this prompt. Third-party template terms still apply.
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