Y Combinator

Y Combinator · Launch Video Breakdown: Hook, Pacing & Motion Design

Local coding agents can't do end-to-end work at your company. @proliferateai is the open-source platform for company-specific agents that can. Provision secure access to your tools, set up automati…

Developer ToolsLaunchFebruary 23, 2026@ycombinator
0:00 · The Hook · Introducing Proliferate: The Open-Source Platform for Company-Specific Agents
0:00 / 0:00

Scene-by-scene timeline & spoken transcript

  1. The Hook

    Introducing Proliferate: The Open-Source Platform for Company-Specific Agents

    “Local coding agents can't do end-to-end work at your company. Proliferate AI is the open-source platform for company-specific agents that can. Provision secure access to your tools, set up automations, and deploy agents that run in isolated sandboxes, access your internal tools, and automate any event across your stack. Whether it's production issues, customer support requests, or even just building new features, Proliferate makes it easy to build and deploy company-specific agents that can do end-to-end work.”

    On screen
    (No on-screen text)
    Camera
    Static medium close-up of the founder, with subtle head and hand gestures. Icons of various tools (e.g., GitHub, Slack, Sentry) appear and disappear on the left and right sides of the screen, animating in and out.
    Motion
    Iconography reveal with subtle scaling and opacity transitions. The icons appear to 'pop' into existence and then fade out, creating a dynamic visual list of integrations.
  2. Product Reveal

    Proliferate in Action: Building and Deploying Agents

    “Proliferate is designed for top engineering organizations that want to build and deploy company-specific agents without having to build custom infrastructure. We've built Proliferate to be open source, so you can self-host it, extend it, and contribute to it. We've also built Proliferate to be easy to use, so you can get started in minutes. Let's take a look.”

    On screen
    PROLIFERATE The autonomous engineering organization A single workspace for coding agents, engineers, and operators to build together, faster. Streamline your work like never before. Open Source Join Waitlist Book a Demo Three core capabilities How Proliferate works Mirrored Environments Sandboxes that duplicate your infrastructure. Agents work in identical conditions to production. Integrations Connect services and tools to extend your agents' capabilities. Learn more Sentry Error monitoring, triggers, automations, and agent tools GitHub Connect your repositories so agents can manage code and open pull requests Linear Track issues and manage projects with your development team Slack Get notifications and interact with your agents from Slack Context7 Up-to-date documentation and code examples for any library PostHog Query PostHog analytics, feature flags, and experiments Firecrawl Web scraping and crawling for LLM-ready content Neon Manage Neon Postgres databases, branches, and queries Stripe Manage Stripe payments, customers, and subscriptions Automations Event-driven agents that respond to triggers across your stack. Templates + New PR Code Review Sentry Bug Auto-Fix Dependency Upgrade Bot Linear Issue Solver Security Audit on Merge Release Notes Generator Flaky Test Detective API Migration Assistant Runs Sentry Bug Auto-Fix - 6 runs All Running Queued Enriching Ready Succeeded Failed Needs attention Timed out Skipped Canceled TypeError: Cannot read property 'amount' of undefined issue.created · 2d ConnectionTimeoutError: Redis connection timed out after 5000ms issue.created · 5d Unhandled promise rejection in WebhookProcessor.handle issue.created · 31m RangeError: Maximum call stack size exceeded in UserSerializer issue.created · 2/15/2026 Good morning, Pablo Let's add a blog page matching the rest of the repo's design. Create a PR if you like the result, otherwise auto archive Claude Sonnet 4.6 Deep proliferate-ai/landing 7 sessions this week · 2 running now Recent Activity Pick up where you left off Enterprise Page Enhancement Session landing 24 minutes ago Running Implement RBAC for organization members feat/rbac-scratch web-app Reconnecting... Migrate payments API from Stripe v2 to v3 feat/stripe-v3-migr... mobile-app Reconnecting... Add OpenTelemetry tracing to API gateway design-system Reconnecting... Resolve TypeError in checkout flow fix/checkout-typee... scratch Reconnecting...
    Camera
    Screen capture of the Proliferate UI, demonstrating various features. The founder's face is visible in a small picture-in-picture window in the bottom right corner. The camera pans and zooms within the UI to highlight specific elements.
    Motion
    UI demonstration with animated cursor movements, highlighting, and scrolling. Elements like integration cards and automation lists animate into view. The picture-in-picture window maintains a consistent position.
  3. Feature Teaser

    The Power of Proliferate: Real-World Impact

    “You shouldn't have to build custom infrastructure for internal coding agents. Proliferate is the open-source platform for company-specific agents that can. Provision secure access to your tools, set up automations, and deploy agents that run in isolated sandboxes, access your internal tools, and automate any event across your stack. Whether it's production issues, customer support requests, or even just building new features, Proliferate makes it easy to build and deploy company-specific agents that can do end-to-end work.”

    On screen
    We hit a real milestone today. 5% of all PRs merged now come from our in-house background agents. Last year we built an agentic harness: a Slack-native framework with the same tools and context as our engineers. Tag the agent in any thread -> it plans, debugs, and ships a PR. 3:50 PM - Feb 6, 2026 228.7K Views Minions are our homegrown coding agents. Over a thousand pull requests merged each week at Stripe are completely minion-produced, and while they're human-reviewed, they contain no human-written code. 9:23 AM - Feb 10, 2026 115.2K Views in the last 24 hours, 57% of merged PRs came from our background agent 2:12 PM - Feb 9, 2026 693.7K Views
    Camera
    Alternating between a medium close-up of the founder and screen captures of social media posts (e.g., Twitter) showcasing testimonials and statistics. The social media posts are presented as overlays, with the founder visible behind them.
    Motion
    Overlay animation for social media posts, appearing with a subtle slide-in and fade-in effect. The founder's video acts as a background, creating a layered visual. The transitions between founder and screen capture are quick cuts.
  4. Call to Action

    Get Started with Proliferate

    “(No spoken dialogue — A final, pronounced sub-bass drop/impact with a high-energy sweep occurs.)”

    On screen
    github.com/proliferate-ai/proliferate
    Camera
    Close-up on the founder, then a quick cut to a full-screen text overlay.
    Motion
    Abrupt cut to a full-screen text overlay with a simple, static display of the URL. The text appears instantly without animation.

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