How to Test a Potential Cofounder
A promising first conversation is not enough evidence for a founding partnership. Before equity, titles and long-term commitments become difficult to unwind, create opportunities to observe how you actually work together.
Start with the conversations people avoid
Discuss commitment, salary, runway, fundraising, decision rights, work intensity, conflict and what happens if one founder wants to leave. Specific scenarios produce more signal than abstract statements about values.
Run a bounded trial project
Choose a real piece of work that can be completed in a short period: customer discovery, a prototype, a sales experiment or a launch plan. Define the goal, deadline and ownership before starting.
Watch how ownership works
Notice whether each person follows through without constant prompting, communicates delays early and can make decisions inside an agreed area of responsibility.
Create at least one real decision
A trial is more informative when you must choose between competing options. Observe how evidence, intuition, disagreement and final accountability are handled.
Debrief the friction
After the project, discuss what felt easy, what created drag and what operating rules would be needed if you continued. The quality of this conversation is part of the test.
Do not confuse an assessment with due diligence
MatchVibe Business Partner can structure conversations about working preferences. It does not measure competence, integrity, legal suitability or startup-success probability. Verify important claims and seek professional advice for formal agreements.