/Companies

Unbound

acquired by CoinbaseYC S24

San Francisco, US · Founded 2023 · 7 employees · Hiring · 20 known investors

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Acquired by Coinbase November 2021 · $258M (total estimated purchase consideration of $257,984 thousand (cash, stock, RSUs) per Coinbase 10-K) · source ↗

Unbound builds security infrastructure to govern AI coding agents in enterprise environments. The company provides an Agent Access Security Broker that sits between AI agents and systems they interact with, enabling security teams to discover, audit, and control agent actions without disrupting developer workflows.

Also known as Web Sentry, Inc. · Unbound Security

Founders & leadership· Y Combinator alumni (S24)

Unbound was founded in 2023 by Rajaram Srinivasan, Vignesh Subbiah, and Raj.

RSRajaram Srinivasan
Rajaram SrinivasanCo-Founder and CEORajaram Srinivasan studied at MIT and previously held positions at Palo Alto Networks and Adobe before founding Unbound, which develops data security solutions for generative AI applications.
VSVignesh Subbiah
Vignesh SubbiahCo-founder · Chief Technology OfficerHe previously held engineering roles at Shogun, Tophatter, and Adobe Systems.
RRaj
RajFounder

Investors · 20

Pioneerlisted by PioneerToronto, Ontario

How we know: Y Combinator's founder network · pioneerfund.vc · Not right? Tell us

Y Combinatorlisted by Y CombinatorSan Francisco · $500K

How we know: the Y Combinator directory · funding news · Not right? Tell us

Alpha Square GroupreportedNew York

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

Massive Tech VenturesreportedSeattle

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

Race CapitalreportedPalo Alto · $250K – $2M

How we know: a partner's Signal profile · funding news · entrackr.com · the VCSheet dataset · Y Combinator's founder network · Not right? Tell us

SAV (Scale Asia Ventures)reportedPalo Alto

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

SBXireportedCambridge · $10K – $1M

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

Sherpalo VenturesreportedMenlo Park

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

Funding

SEC filings, press & company announcements

$8M disclosed across 2 of 3 rounds · 2025

Source: company announcements and press reports — follow each round's link for the claim.

Founder mafia

2 people who came through Unbound went on to found or lead other companies.

Related companies · 9

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OpenAIOpenAI is an AI research and deployment company focused on developing artificial general intelligence (AGI) with emphasis on safety and beneficial outcomes for humanity.
PetrarchPetrarch operates a marketplace that connects buyers and sellers of specialized datasets and proprietary information.
HyperboundHyperbound provides an AI sales coaching platform that analyzes sales calls and creates AI-powered roleplays to help sales representatives practice and improve their skills. The platform serves sales teams and leaders looking to standardize training, provide real-time feedback, and improve deal closure rates.
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AutoboundAutobound builds B2B signal intelligence infrastructure that monitors 35+ data sources across 250M+ contacts and 50M+ companies, delivering verified business event data via API and licensing to enterprise go-to-market teams. The platform aggregates signals from SEC filings, hiring patterns, funding events, and tech stack changes to power sales intelligence and outreach.

Companies working in the same space as Unbound.

Legal entities · 1

corporate structure
Web Sentry, Inc.

In the news

Frequently asked questions

What does Unbound do?
Unbound builds security infrastructure to govern AI coding agents in enterprise environments. The company provides an Agent Access Security Broker that sits between AI agents and systems they interact with, enabling security teams to discover, audit, and control agent actions without disrupting developer workflows.
Who founded Unbound?
Unbound was founded by Rajaram Srinivasan, Vignesh Subbiah, Raj in 2023.
Who are Unbound's investors?
Unbound's investors include Eight Capital, Evolution Equity Partners, Northside Ventures, Pioneer, Transpose Platform Management, Vorwerk Ventures, Wayfinder Ventures, Y Combinator and 12 more.
How much funding has Unbound raised?
Unbound has disclosed $8M raised across 2 of its 3 known rounds.
Where is Unbound headquartered?
Unbound is headquartered in San Francisco, US.