XJumper
AI growth agent that replies to Build in Public community posts from your own browser
Desktop agent for SaaS and indie developers that reads the Build in Public community on X, finds relevant posts, and replies in your voice from your own browser
About this launch
XJumper is an AI growth agent designed for SaaS and indie developers to automate engagement on X's Build in Public community. The desktop agent runs on your own machine, reads the Build in Public community daily, identifies relevant posts from builders, and drafts replies in your voice before publishing them from your browser at a natural human pace, with a cap of up to 50 replies per day.
The agent includes safety features like avoiding duplicate posts and respecting author cooldowns. It runs locally with your real browser fingerprint and device identity, not from external data centers, to maintain account safety. Beyond the autonomous agent, XJumper provides three additional tools: Search Post for finding posts worth replying to, Target Monitoring to watch up to 10 accounts in real time, and Smart DM for sending personalized messages to new followers.
The platform also includes a Chrome extension that adds AI reply suggestions, voice-to-text posting, quick follow actions, activity tracking, and tweet value estimation directly on X.com.
What it does
- Autonomous Build in Public replies up to 50 per day
- Runs on your own machine with real browser fingerprint
- Search Post tool to find relevant posts by keyword, engagement, and recency
- Target Monitoring to watch up to 10 accounts in real time
- Smart DM for personalized warm messages to new followers
- Chrome extension with AI reply suggestions and voice-to-tweet
- Human-paced engagement with author cooldowns
- Multi-language support including English, Chinese, Spanish, Japanese, Korean, German, French, and Hindi
- Tweet Value estimation showing ad value based on impressions and engagement
- Activity Overview chart showing posting and reply patterns over time
Pricing
Pricing model: Paid
Growth Agent Plan: $29.99/month (includes autonomous Build in Public replies, Search Post, Target Monitoring, and Smart DM). Tools Plan: $9.99/month (all three tools without the autonomous agent).
Shopper questions
What is XJumper?
XJumper is an AI growth agent for SaaS and indie developers that reads the Build in Public community on X, finds relevant builder posts, and replies from your own desktop browser at a human pace. The Growth Agent plan includes Search Post, Target Monitoring, and Smart DM tools.
How much does XJumper cost?
The Growth Agent costs $29.99/month and includes all three tools: Search Post, Target Monitoring (up to 10 accounts), and Smart DM. The manual Tools plan is $9.99/month for those who prefer to control the tools themselves.
Is it safe to use XJumper with my X account?
Yes. The agent runs on your own machine in your real browser with your real device fingerprint, not from external data centers. It uses human-paced engagement with author cooldowns and safety limits to avoid detection, though automation on X does carry platform risk.
Do I need to join the Build in Public community?
Yes, you need to have access to the Build in Public community on X for the agent to find and reply to posts from that community.
Can I cancel my subscription anytime?
Yes. You can cancel your subscription at any time from your account settings with no questions asked and no hidden fees.
XJumper has a free listing. The owner can unlock the full profile with a paid launch for $5:
- Founder story (locked)
- Milestones (locked)
- Demo video (locked)
- Dofollow website link (locked)
Shoppers also viewed
- ProCommento
Social Media & Creator Tools
- YT Tools Online
Social Media & Creator Tools
- Outbrand
Social Media & Creator Tools
- Instapdown
Social Media & Creator Tools
