Vishal Shrestha

How to build an AI voice agent with OpenAI Realtime API + Asterisk SIP (2025) using Python

I’ve deployed AI call assistants for a few organizations, and realized how scattered and incomplete most resources are. So, I decided to build a replicable framework, something you can actually use without spending hours searching for missing pieces. In this tutorial, I’ll show you the full AI call agent setup using Asterisk and OpenAI Realtime …

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FIX “Workflow Error”: We experienced an error while running the workflow” in OpenAI Agent Builder

I hit this message while building a simple email agent: “We experienced an error while running the workflow.” No context, no helpful error log, that’s it. If you’ve seen this inside OpenAI Agent Builder, you know the vibe. Yeah, because nothing says fun like vague error messages. The good news is, I’ve fixed this multiple …

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Create PDF from Layout or Any XML View in Android Studio

I tutorial on how to create a PDF document from a layout or any XML view in Android Studio, I will walk you through the process of using the PdfDocument class to convert your XML views into PDF files. With this powerful functionality, you can generate professional-looking documents within your Android applications. Let’s dive in …

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Fix Error – Apache Shutdown Unexpectedly in XAMPP [SOLVED]

When it comes to web development, having a local server on your computer is essential. XAMPP is the most popular too that helps to create an Apache Web Server in windows. It allows developers to test and debug their web applications before deploying them to a live server. XAMPP is a popular cross-platform software stack …

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Change Kernal to Different VirtualEnv in Jupyter Notebook (2023)

In this post, we wil learn how we change change kernal to different virtualenv in Jupyter Notebook. Many people face issues when trying to run Kernal in different Vritual Environment, by the end of this post, you won’t face any such issues. Jupyter notebook is a popular tool used by data scientists and developers to …

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