Automate your WhatsApp channel with an AI agent
Connect an agent to posthell, enable Publishing, and it can broadcast to your WhatsApp channel on its own, reaching an opt-in audience on the app they open most.
By Rohan Gotwal, Founder, posthellUpdated July 6, 2026A WhatsApp channel reaches people on the app they check more than any other, which makes it a high-attention surface where a missed update is costly. With an agent connected to posthell and publishing enabled, your agent can turn an update into a WhatsApp channel broadcast and send it on its own, so subscribers get a consistent stream without you sending each message by hand. WhatsApp is free to serve, so this is unlimited and never metered. The agent broadcasts text, which is the heart of a channel post.
Your agent posts to WhatsApp on its own once you flip its key to Publishing. It asks first by default, and you can turn autonomous posting off anytime.
What your agent does
Broadcast where attention is
WhatsApp is where a lot of people actually look. The agent can keep your channel broadcasting on a schedule so your most-checked surface stays active.
The update, sent for you
The agent shapes your note into a clean channel broadcast and can send it itself, so you are not manually messaging your channel every time there is news.
Unlimited and never metered
WhatsApp is free to serve, so an agent broadcasting to it costs nothing on any plan. Only X is metered.
Broadcasts to your connected channel
The agent posts to the WhatsApp channel posthell connected through Zernio. The connect flow handles setup.
How to automate WhatsApp posts
Connect your agent
Create an API key in posthell Settings, then add posthell to Claude Code, Cursor, or OpenClaw with one line, or run the posthell CLI. It uses the same account you already have.
Turn on publishing
Flip the key to Publishing so your agent can post to your networks on its own. It stays off by default, and you can revoke it anytime.
Let it post to WhatsApp
Tell your agent what you shipped. It shapes a post in your voice and publishes to WhatsApp on schedule, or on a heartbeat if you have it check in on a loop.
Frequently asked questions
Can an AI agent broadcast to a WhatsApp channel automatically?
Yes, once Publishing is enabled on the agent's key. The agent sends text broadcasts to the WhatsApp channel posthell connected, on its own. A draft-only key queues them for approval instead.
Does the agent message individual contacts?
No. The agent broadcasts to a WhatsApp channel, the opt-in broadcast surface, not to personal DMs or contacts. The connect flow points it at your channel.
Is automated WhatsApp posting metered?
No. WhatsApp is unlimited on every plan and an agent broadcasting to it costs nothing. Only X is metered.
Can the agent run WhatsApp and Telegram together?
Yes. In one run it can broadcast to WhatsApp and Telegram and any other connected network, X included. The free networks cost nothing; X draws from your X credits.
Point your AI agent at WhatsApp
Connect your agent to posthell, enable publishing, and it posts to WhatsApp and your other networks on its own. Honest founder pricing, with X metered at the exact rate (your credit wallet caps the spend) and every other network unlimited.