Zavu

Earlier this year, while building Nely.ai, other developers started asking to use our internal messaging API. What we had built to power our own product was solving problems they were also facing, especially around WhatsApp, pricing, and reliability.

At the same time, it became clear that exposing that API as it was would not be enough. The existing CPaaS model was not designed for AI apps, agent-driven workflows, or modern development practices. Supporting those use cases properly required rethinking the entire stack.

Zavu.dev was born from that decision. We rebuilt the messaging layer from scratch with a developer-first mindset, focusing on predictable pricing, clean abstractions, and APIs that fit naturally into AI-driven systems. Instead of adapting to legacy CPaaS constraints, we designed the platform around how AI apps actually send and manage messages today.

AI apps changed how messaging is used. Conversations are no longer driven by humans one message at a time. They are generated, routed, retried, and managed by agents and workflows. Traditional CPaaS stacks were not designed for this model, especially when pricing is tied to per message usage and fragmented providers.

After hitting these limits ourselves, we rebuilt our messaging stack around AI-first workflows.