I Spoke to My API – Before It Was Even Built
09 Oct 2025
Bengaluru, India
Summary
What if you could test your API before writing a single line of backend code? In this talk, I’ll showcase an AI-powered tool I built that lets you upload an OpenAPI spec, automatically validates and enriches it, and — here’s the magic — lets you interact with your API via chat.
Powered by a custom backend and OpenAI agents, this tool enables real-time API simulations: POST, GET, PATCH — all without spinning up a single service. Whether you’re an API product manager or a backend engineer, this talk will show how you can use OpenAPI, AI, and clever tooling to shift API feedback left — radically improving design, testing, and developer experience.
Yogesh will share:
- How the tool validates and fixes your spec
- How you can simulate API workflows with zero backend
- Lessons from integrating OpenAI with a spec-driven execution engine
- Lessons in making OpenAPI ‘executable’ using AI.
Other Appearances
Reliable by Design: Building Guardrails for AI and Other Unpredictable Systems
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Using GraphQL SDL files as executable API Contracts
By Hari Krishnan
Explore the concept of using GraphQL SDL files as executable API contracts to enable contract testing, mocking, and backward compatibility checks without writing any extra
