Apollo GraphQL, a leader in open-source and commercial GraphQL technologies, has secured $130.0M in Series D funding. The San Francisco-based company helps developers and engineering teams build better software faster by using a declarative, graph-based approach to API orchestration.
The new capital comes as Apollo extends its graph-based approach to power AI agents and agentic applications. With over 1 billion downloads of its open-source software, Apollo has become a standard for working with GraphQL, enabling teams to unify APIs into a composable graph through its GraphOS® platform.













