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Propolis

Hands off QA via intelligent browser agents.

Propolis simulates real users via swarms of autonomous browser agents that test for you.
Active Founders
Marc Papazian
Marc Papazian

Marc Papazian, Co-Founder

Building Propolis (YC X25)! Former Palantir lead, wine maker, beekeeper, foreign policy wonk.
Matt White
Matt White

Matt White, Co-Founder

Hello! I go for runs and write code.
Propolis
Founded:2025
Batch:Spring 2025
Team Size:2
Status:
Active
Location:New York
Primary Partner:Aaron Epstein
Company Launches
Propolis: Building Synthetic Users
See original launch post

TL;DR: Propolis unleashes AI swarms that eliminate QA by automatically testing your product like real users would. Our solution, in production, has already become the go to for fast shipping engineering teams.

Ask: Do you know any engineering teams bottlenecked by QA or looking to ship faster? Contact us at marc@propolis.tech.

Hi! We’re Marc and Matt, tenured former leads of large and gnarly implementations and deployments at Palantir and Airtable (+ a bunch of startups!). We’re building Propolis.

❌ The Problem: Software development cycles have accelerated substantially over the past year. Yet, testing remains stuck in the past, relying on either slow manual QA or brittle automation that breaks with every product change, creating three major pains:

  1. Wasted engineering time
  2. Delayed releases
  3. Bugs reaching real users

These intensify as companies scale, with some dedicating entire teams to QA or accepting that their users will find the bugs for them. But with Propolis, this is finally changing:

https://youtu.be/3AxEHNmTqyc

🐝 Our Solution: Propolis deploys autonomous browser agents that think and behave like real users. They build an understanding of your application and communicate with one another. Teams simply provide a URL and credentials, and get access to:

  • Complete test coverage 🧪: AI agents explore your entire product, discovering and testing every possible user flow.
  • Precise bug reporting 🐛: Detailed reports delivered directly to Slack, Linear, Github, or wherever with videos, traces, and reproduction steps.

🙏 Our Ask: If the above seems like something you or someone you know needs, please get in touch!

We're offering our next batch of customers:

  • A walkthrough of our agents traversing your application
  • Recently harvested honey for the next 10 companies that sign up! 🍯 (We're recreational beekeepers, hence the name)

Contact us at marc@propolis.tech

👬 The Team Marc and Matt have both personally struggled with the reality of losing precious time QAing instead of shipping, countless hours clicking through flows and writing tests. They’ve bonded over their mutual fondness for deploying solutions that break the mold.

Marc was previously Director of Product at an AI startup and a deployment lead at Palantir - where he led work building the operational data backbone for the entire Federal pandemic response. He makes wine halfway across the world in Armenia (ironically, he does NOT like wine).

Matt was previously a senior engineer at Airtable, where he worked on infrastructure that helped eliminate the need for manual QA. He’s been frontline for hundreds of product releases and deploys, and knows what it takes to be confident in the code you’re shipping.