Vessel

Avery Yip and Zachary Kirby founded Vessel in the San Francisco Bay Area in 2021/2022 after working together at SaaS-management company Productiv, where both saw how much engineering work was consumed by third-party integrations. Vessel began as a 'universal API for CRMs'—a common data model spanning accounts, leads, contacts, deals, events, notes, tasks and users—and broadened into a developer-first native-integration platform for CRM, sales-engagement, marketing-automation, chat and dialer systems. Its products combined unified read/write APIs, an Actions API for provider-specific operations, webhooks/real-time triggers, a drop-in authentication UI and managed ETL/data synchronization. The platform handled OAuth, permissions, provider rate limits, inconsistent schemas and webhook gaps so B2B SaaS product teams could ship integrations without maintaining each connector themselves. A founder announced a $2.5m seed in 2022; Vessel was also a Y Combinator Winter 2022 company and appears in Benchmark's portfolio dataset. No reliable public evidence supports later financings: several data vendors have merged this company with older video/media or consumer-product companies also called Vessel, creating false totals as high as $231.1m. YC now labels the company inactive, lists its two people as former founders and reports a historical team size of five. The legacy marketing site remains reachable, but that does not establish ongoing commercial operations. The founders' later public profiles and job-seeking descriptions further corroborate that the venture ceased operating. Key risks during operation included dependence on changing third-party APIs, security and privacy exposure from customer OAuth/data access, connector maintenance burden, competition from Merge, Paragon, Prismatic, Workato and embedded-iPaaS vendors, and the difficulty of monetizing a small connector catalog before achieving scale.

Founding story

At Productiv, both founders worked on SaaS-management infrastructure and observed the cost of building and maintaining many integrations. They framed Vessel as 'Plaid for CRMs' and launched through YC W22 before expanding from CRM into the wider go-to-market stack.

Business model

Developer infrastructure sold as an embedded integration platform for B2B SaaS product teams.

Freemium/usage-and-connection-limited SaaS: a free development tier, paid Launch tier and custom enterprise terms; final realized revenue was not disclosed.

Traction

YC reports a historical team size of five. Vessel said it built 45+ integrations across its founders' Productiv/Vessel experience and later claimed enterprise-grade SOC 2 controls and large API/data volume, but public customer count, ARR and independently verified production volume are unavailable.

Latest developments

Y Combinator marks Vessel inactive and labels Avery Yip and Zachary Kirby former founders. The legacy vessel.dev site still renders but should be treated as an archival marketing surface rather than proof of ongoing operations.