The Build in Public Community on X, Explained for Developers
It is the one place on X where a 300-follower developer and a 30,000-follower founder post into the same feed. Here is how it works, what to post, and why replies there matter more than your own timeline.
Day 38 of building my invoice tool. Cut onboarding from 6 steps to 3 and trial-to-paid went from 4% to 7% this week. Next up: killing the pricing toggle nobody uses.
Halving onboarding and seeing paid conversion move that much says the friction was real. Which step did you drop first?
- 09:14@devmarco Pricing page v3 is live, finally happy with itReplied
- 10:52@tinylaunch First $100 MRR after 5 months of nights and weekendsReplied, followed
- 13:30@sam_codes Rewrote my auth flow over the weekend and deleted 900 linesQueued
What Is the Build in Public Community?
Build in Public is an X Community: a dedicated feed, separate from the main timeline, where founders and developers post progress on what they are building. Revenue screenshots, launch days, bugs that took a weekend, the pricing page they finally shipped. Anyone on X can read it. Members can post to it and reply inside it, and posts there show up both in the community feed and on the author's profile.
Why it matters for a developer with a small account: on your own timeline, a post reaches your followers and almost nobody else. In the community, a post reaches everyone who opens the community feed that day, and a reply reaches the author plus everyone reading their thread. The audience is already filtered for you. It is other people who build things, which is exactly who follows developers back. XJumper's Growth Agent exists because this one feed is where daily replies pay off most.
Who Is There
Indie developers, SaaS founders, solo makers, and the people who buy from them. Mostly English, every time zone.
What Gets Posted
Progress updates, MRR milestones, launch announcements, honest failures, and questions to the room.
What Gets Noticed
Specific replies. A question about the exact step someone described gets a reply back and a profile visit. Generic praise gets nothing.
How Posting and Replying Work Inside a Community
The mechanics are slightly different from the main timeline, and the differences are what make it useful.
Joining
Open the community page on X and click Join. Build in Public is open; there is no approval queue. You need to be a member to post to the feed and to reply inside it, which is also why XJumper asks you to join before its Agent can run.
Posting to the Community
When you compose a post, choose the community as the audience instead of Everyone. The post appears in the community feed, sorted by recency or by engagement depending on the reader's tab, and on your own profile.
Replying
Replies under a community post work like any reply on X: the author gets a notification, and readers of the thread see them. The difference is who those readers are. In this feed, they are builders deciding whom to follow.
Discovery
Most members read the community feed directly, not through the algorithmic timeline. That means a small account's post or reply is shown on equal footing with a large one. Nowhere else on X is that true.
What to Post as a Developer
The feed rewards specifics. These four formats consistently get replies and profile visits.
The Numbered Progress Update
Day 38, week 12, launch minus 3. A running count gives readers a reason to come back and makes your account feel like a story, not a feed.
One Metric, One Change
Trial-to-paid went from 4% to 7% after cutting onboarding from six steps to three. One number, one cause. It invites the question that starts a conversation.
The Honest Miss
The feature nobody used, the launch that got twelve visitors. Builders trust accounts that post misses, and misses get more replies than wins.
The Question to the Room
Which payment provider, which onboarding email, which pricing page. Ask people who have made the decision. The replies are the most useful content you will read that week.
A Daily Routine That Survives Shipping Days
Posting once a week is enough. Replying every day is what grows the account, and it is the part most developers drop.
1. Read the community feed for ten minutes
Sort by latest. Skip reposts, link drops, and anyone with a large following; they do not need you. Look for posts from builders at your stage with a concrete detail you can respond to.
Posts under 36 hours old get replies seen. Older threads are mostly closed.
2. Reply to five to ten posts with one specific thing
Name the detail you noticed, add one observation or one question. Two sentences. No praise-only replies, no hashtags, no tagging, no plug of your own product.
A question that only someone who read the post could ask is the highest-signal reply there is.
3. Follow a few of the people you replied to
Not everyone. The ones whose work you would actually want in your feed. Follow-backs come from replies first and follows second, not the other way around.
Never reply to the same post twice and do not reply to the same author every day. It reads as a script.
4. Do it again tomorrow, including on shipping days
This is the step that fails. The routine takes thirty minutes and shipping days have none. XJumper's Growth Agent does steps one to three for you every day, from your own browser, so the days you are building are not the days you disappear.
FAQ
Show Up in Build in Public Every Day, Even When You Are Shipping
XJumper's Growth Agent reads the community, picks the builders worth answering, and replies in your voice from your own browser. Up to 50 replies a day, never the same post twice.
Try XJumper Agent