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Proliferate

San Francisco, US · Founded 2025 · 7 employees on LinkedIn · Hiring · 19 known investors

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Proliferate is an open-source agent workspace that runs multiple AI coding agents (Claude Code, Codex, Gemini, and open models) in parallel on local or cloud infrastructure. It provides isolated execution environments, workflow automation, and integrations for developers to orchestrate and manage agent-based tasks.

Also known as Keystone Automation Inc. · Keystone

AI & Machine Learning Developer Tools Enterprise Software SaaS Artificial Intelligence B2BUnited States of AmericaAmerica / Canada

Founders & leadership· Y Combinator alumni (S25)

Proliferate was founded in 2025 by Pablo Hansen.

PH

Pablo Hansen

Pablo Hansen FounderPablo Hansen completed a master's degree in AI and was an early hire at Onyx (YC W24) before co-founding Proliferate.

Investors · 19

Accelmed Partnerslisted by Accelmed PartnersMiami

How we know: Accelmed Partners's portfolio page · Not right? Tell us

Outset Capitallisted by Outset CapitalSan Francisco · $200K – $400K

How we know: Outset Capital's portfolio page · Y Combinator's founder network · Not right? Tell us

Pioneerlisted by PioneerToronto, Ontario

How we know: Y Combinator's founder network · pioneerfund.vc · open dataset · 5k.vc investor directory · Not right? Tell us

True Ventureslisted by True VenturesSan Francisco · $500K – $3M

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Y Combinatorlisted by Y CombinatorSan Francisco · $500K

How we know: the Y Combinator directory · open dataset · 5k.vc investor directory · Not right? Tell us

Zero Indexlisted by Zero Index

Andreessen HorowitzreportedMenlo Park · $500K – $50M

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Asylum VenturesreportedBrooklyn

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Blast.Clubreported$5.5M

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CRV (Charles River Ventures)reportedBay Area · $250K – $5M

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Imperial CapitalreportedToronto

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Metsu Capitalreported

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MIKE HELLERreportedSan Francisco

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Pear VCreportedSan Francisco · $150K – $4M

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Ritual CapitalreportedMenlo Park · $100K – $500K

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Spot VCreportedNewark

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Twenty Two VenturesreportedPalo Alto · $50K – $250K

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Valkyrie Ventures Management, LlcreportedPark City

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WefunderreportedSan Francisco

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Companies working in the same space as Proliferate.

Legal entities · 1

corporate structure

Keystone Automation Inc.

In the news

Proliferate: the open source company coding agentycombinator.com · Feb 2026

Frequently asked questions

What does Proliferate do?: Proliferate is an open-source agent workspace that runs multiple AI coding agents (Claude Code, Codex, Gemini, and open models) in parallel on local or cloud infrastructure. It provides isolated execution environments, workflow automation, and integrations for developers to orchestrate and manage agent-based tasks.
Who founded Proliferate?: Proliferate was founded by Pablo Hansen in 2025.
Who are Proliferate's investors?: Proliferate's investors include Accelmed Partners, Outset Capital, Pioneer, True Ventures, Y Combinator, Zero Index, Andreessen Horowitz, Asylum Ventures and 11 more.
Where is Proliferate headquartered?: Proliferate is headquartered in San Francisco, US.