Say what you're building and what you're missing. Stackmate scores everyone against it — on skills, hours, timezone and stage — so you only spend time on people who actually fit.
Co-founder splits usually trace back to something nobody asked about early enough — hours, equity, who decides what. Stackmate asks those questions up front and puts the answers on the card.
Pick one side: Founder with a project, or Candidate looking to join one. Add your skills, the hours you can really give each week, and what you need from a partner. Verify your identity so people know you're a real person.
Every profile arrives with a score out of 100 and the four numbers behind it. Filter it down, then send a request with a short note about your project. Nobody can message you before you accept.
Book the intro call from a shared calendar without leaving the app. Afterwards you both answer the same short review — and neither one is published until both are in.
Picking a co-founder is closer to a marriage than a hire, and it usually happens on far less information. These four features exist to close that gap.
There is no way to message someone who hasn't accepted you — no DMs, no "hey, quick question". To reach you at all, a person has to write 50 to 300 characters about why, and it has to be about your project. Everyone gets ten open requests at a time, they expire after a week, and a no starts a thirty-day cooldown. So the few that arrive are worth opening.
Hours a week. How you want to split equity. Salary or equity only. Bootstrap or raise. Remote or in a room together. These are the conversations that end partnerships in month eight, and nobody has them in month one. On Stackmate you answer them before you appear in anyone's deck — and the answers sit on your card where they can't be discovered late.
After a call you both answer the same short questions about reliability, communication and alignment. Nothing is published until both are submitted, so nobody gets to write theirs after reading yours. Your rating stays hidden until you have at least three, and older reviews count for less as they age.
Connect your calendar and Stackmate shows only the slots you're both genuinely free — in each of your own local times. Pick one and the video link is created and sent for you. No availability ping-pong, no timezone arithmetic, no separate scheduling tool.
General networks are built to show you job titles. None of them can tell you how many hours a week someone will commit, what equity they expect, or whether the last person who worked with them would do it again.
Stackmate runs a Model Context Protocol server — the open standard assistants use to reach real services. Connect it once and Claude can read your deck, tell you who is worth your attention and why, and draft the intro message from the project you have actually been describing to it all week.
An assistant can only work with an account that has something in it — an empty profile produces an empty deck. Set one up in the app, or build it here in the browser, then turn on AI-assistant matching from your account settings.
One URL. Nothing to install, nothing to run locally.
Run this in your terminal:
claude mcp add --transport http stackmate https://api.stackmateapp.com/mcp
In Claude for desktop, web or mobile: Settings → Connectors → Add custom connector, then paste the server URL.
https://api.stackmateapp.com/mcp
Any client that speaks streamable HTTP MCP works. It registers itself automatically and discovers the sign-in flow from the server — there is no client ID or secret for you to create.
https://api.stackmateapp.com/mcp
Your client opens a Stackmate page. You sign in there — never in the assistant — and see which client is asking and exactly what it may do. Approving hands it a separate Stackmate key, not your login. It expires after 90 days, and you can cut it off at any moment from the app or from your account page.
Everything that makes Stackmate worth using — the score, verification, reviews, scheduling, the MCP server — is on the free plan. Paid plans raise the daily limits and put you higher in other people's decks.
Prices are in USD and billed through the App Store. Subscriptions renew until you cancel, which you do from your Apple account — not from us.
Building a profile takes about five minutes and costs nothing. Do it on your phone, or start right here and finish in the app.