An introduction to building with Perplexity’s Agent API, covering how to build with state-of-the-art models, tool calling, and agentic orchestration.
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James Liounis is a Forward Deployed Engineering Lead at Perplexity AI, where he owns the API platform end-to-end, from product and roadmap to developer experience. Under his leadership, the platform has grown from one API to five products and seven endpoints used by hundreds of thousands of developers, with revenue scaling 6× and daily request volume 7×. He led major enterprise integrations including Samsung (~800M devices) and drives ecosystem growth through partnerships with Vercel, LangChain, and Perplexity's Startups Program.
An economist turned Harvard-trained full-stack AI engineer with prior experience at AWS, James now leads a team of three across forward-deployed engineering, developer relations, and developer support.