The best people to interview about your tool already starred it. WarmStars scans your repo, turns each stargazer into a named developer at a real company, and gives you a public email for many of them, so lining up people to talk to stops being the hard part of research.
2 free scans · no card · results in seconds
Reach the real developers who adopted your project.
Discovery lives or dies on who you talk to, and a survey panel gives you strangers with no stake in your tool. Your stargazers are the opposite: developers who already picked your project, at real companies, doing real work with it. Scan the repo and you get a named pool to draw an interview sample from, with a public email for many, so you spend your time on the conversations instead of the search.
Everyone you reach out to already uses your tool, so interviews start past the setup and go straight to the decisions and friction that matter.
Company, role, and bio sit next to each contact, so you can pick a balanced sample across company size and seniority instead of talking to whoever answers first.
Save prospects to a board, track who you have contacted and who replied, and export the rest to CSV for the next study. One scan feeds a research pipeline, not a single round.
Every scanned stargazer carries the context a researcher needs to screen for a representative sample, instead of taking whoever volunteers.
emailA public, reachable address where the developer left one, so inviting a user to a 30-minute call is one message, not a hunt.
bioHow the developer describes their own work, so you can screen for the roles and domains your study needs.
companyThe account behind the person, so you can balance a sample across startups and larger teams instead of skewing to one.
One star becomes a named user at a real company, with the context to screen them in or out, and an email to send a single interview invite.
your-co/lib4.8k starsmara@cobalt.healthVerifiedScan your first repo free. Two scans a month, no card.