Hello Ketan Joshi,
Welcome to the Microsoft Q&A and thank you for posting your questions here.
I understand that you have been doing a POC with semantic kernel API manifest, and you need a good Microsoft documentation on it.
Though it sounds frustrating not to find detailed documentation. Here you go for more comprehensive information on Semantic Kernel API manifests, the resources bellow offers more in-depth guidance for your POC:
- This blog post "Generating API Manifests for Semantic Kernel" provides a step-by-step guide on generating API manifests using Kiota, a tool designed to simplify the process - https://devblogs.microsoft.com/semantic-kernel/generating-api-manifests-for-semantic-kernel/
- On Microsoft Learn page you will find "Give agents access to OpenAPI APIs" which explains how to integrate OpenAPI plugins with Semantic Kernel, detailing the extraction of OpenAPI document and operation metadata - https://learn.microsoft.com/en-us/semantic-kernel/concepts/plugins/adding-openapi-plugins
I hope this is helpful! Do not hesitate to let me know if you have any other questions.
Please don't forget to close up the thread here by upvoting and accept it as an answer if it is helpful.