Download the XJumper Agent
The autonomous agent runs on your own machine, with your real browser fingerprint, so every Build in Public reply looks exactly like you. Install once, connect your account, and let it work while you keep shipping.
Install, connect, and grow in one step
Download the Agent, create your account, and link them in a single step. Your daily Build in Public replies run from your own machine.
What the Agent does once it's installed
The Agent finds relevant builder posts, replies in your voice, and does the daily growth work for you, all at a human pace.
Build in Public targeting
The Agent reads the Build in Public community and prioritizes posts from builders who fit your audience.
Auto-replies
Joins the conversations that matter with relevant, on-voice replies, one post at a time.
Duplicate protection
Avoids replying to the same post twice and respects recent-author cooldowns.
Optional follow-up actions
Keeps any extra engagement behind conservative daily safety limits.
Reply reporting
Shows which Build in Public posts were selected, replied to, skipped, or failed.
Search Post built in
Find the viral posts worth replying to, then hand them to the Agent or reply yourself.
Runs on your machine
Your real browser, your real fingerprint. Actions look human because they come from you.
Human-paced by design
Replies go out at a natural cadence, with no robotic bursts that stand out on X.
Set it and forget it
Connect once. The Agent finds builder conversations and works in the background.
Download FAQ
How do I get started?
Download the installer for your OS above, create your account, then connect the Agent in one step. Once community replies are enabled, it starts planning daily builder replies.
Which platforms are supported?
macOS (Apple Silicon & Intel), Windows 10/11, and Linux (.deb / .rpm, amd64 & arm64). Each ships as a signed installer.
Will this look like me on X?
Yes. The Agent runs in your own browser session with your real fingerprint and works at a human pace - every action comes from your machine, not a foreign data center.
Do I need the Chrome extension?
No. XJumper is now a desktop Agent - it replaces the old Chrome extension and does the growth work autonomously on your machine.