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ApplicationsDeveloper Tools
Total funding $20M📍 United KingdomFounded 2023

About

Founded in 2023 in London, StackOne provides a unified API integration platform that enables SaaS vendors and AI agent developers to connect with enterprise software tools through a single interface.

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CompanyInvestorFounders / teamCo-investment (thicker arc = more shared deals, ×N marks the count)Bigger circle = stronger signal (activity / coverage / interest) · ⛶ fullscreen · scroll / pinch to zoom · hover to highlight · drag nodes · click a node to open its profile

Founders / core team

Investors

Funding history

Comparable companies· by market

This company

  • StackOne

    Founded in 2023 in London, StackOne provides a unified API integration platform that enables SaaS vendors and AI agent developers to connect with enterprise software tools through a single interface.

    Series A · $20M · 2025-05

United States

China

Europe

Other / unspecified

Confirmed rounds only. Matched on subsector, sector, stage and funding scale — each verifiable on the company profiles.

Investors that may fit

Accel

25 Developer Tools deals in the last 24 months · 12 at a nearby stage · 2 in United Kingdom

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Menlo Ventures

8 Developer Tools deals in the last 24 months · 3 at a nearby stage · 1 in United Kingdom

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SineWave Ventures

5 Developer Tools deals in the last 24 months · 1 at a nearby stage · 1 in United Kingdom

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Mantis VC

4 Developer Tools deals in the last 24 months · 2 at a nearby stage · 1 in United Kingdom

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Index Ventures

4 Developer Tools deals in the last 24 months · 3 at a nearby stage · 1 in United Kingdom

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Plug and Play Ventures

3 Developer Tools deals in the last 24 months · 2 at a nearby stage · 1 in United Kingdom

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Ranked by each firm’s deals in this sector over the last 24 months, weighted by nearby stage and shared geography. Indicative only — no rating judgment.

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