Show HN: I Made an SDK to work with Vapi and Retell without vendor lock in
A developer created an open-source SDK designed to work with AI voice agents Vapi and Retell, aiming to prevent vendor lock-in by providing a unified interface for both platforms.
Background
- Vapi and Retell are two competing voice AI platforms that let developers build conversational voice agents (e.g., automated customer support or voice assistants). Each has its own proprietary SDK, meaning code written for one platform cannot easily be reused on the other — this is "vendor lock-in."
- This Show HN post is presenting a new, open-source SDK that acts as a unified abstraction layer: developers write code once and can switch between Vapi and Retell (or potentially other providers) without rewriting their application logic.
- The problem it solves is a common one in the fast-moving AI tooling space: startups build on a single vendor, then face painful migration costs if that vendor changes pricing, goes down, or gets outcompeted. An abstraction layer reduces that risk.
- "Show HN" is a tag on Hacker News where makers share side projects and startups for feedback from the tech community.