Primer API Limited

Based in the UK, Primer API Limited provides a comprehensive payment infrastructure that enables businesses to streamline global payment processes and enhance commerce through a unified API solution. Primer API Limited, founded in 2020 and headquartered in London, UK, specializes in payment solutions. The company was co-founded by Gabriel Le Roux and Paul Anthony. In May 2026, Primer API Limited raised USD 100 million in series C funding led by Sofina, with participation from Peak XV Partners, Balderton Capital, Accel, ICONIQ Capital, Tencent Investment, and Speedinvest.

Currently, Gabriel Le Roux serves as CEO. Primer offers a unified payments platform that integrates with hundreds of payment services through a single API, facilitating seamless global payments. The platform is designed for industries like online retail, gaming, and fintech, enhancing the customer checkout experience with features such as localized checkout, advanced fraud prevention tools, and real-time payment metrics. Its client base includes leading global brands in North America, Europe, and Asia, all leveraging Primer's solutions to optimize their payment operations.

In the most recent fiscal year 2023, Primer reported revenue of GBP 3,557,717. 90, with an EBITDA of GBP -19,322,265. 90. The company's revenue model is based on transaction fees for integrated payment services and solutions, allowing clients to enhance their direct-to-consumer and B2B payment processes through access to adaptive fraud prevention tools and customizable checkout experiences.

Primer API Limited plans to introduce new products aimed at enhancing its payment infrastructure, focusing on features that further optimize transaction success rates. The company is also looking to expand into additional markets across Europe and Asia by the end of 2024. The company will use the May 2026 funding to strengthen artificial intelligence capabilities for payments and finance teams and expand in the US.