Vishal Shrestha

The RAG Playbook: Advanced Parsing for PDFs – Tables, Footnotes, & Figures

Retrieval-Augmented Generation (RAG) is all fun and games until you feed it a PDF that seems hell-bent on sabotaging your efforts. Consider yourself lucky if you have not come across PDFs with split columns, cryptic tables, wandering footnotes, and images in weird places. As a developer who’s wrangled everything from mobile apps to VOIP systems, …

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How to Build and Ship a Self‑Hosted MCP Server (Notion + GitHub) with Auth, Rate Limits

Building your own Model Context Protocol (MCP) server can feel like making a custom gadget – half mad science and half stroke of genius. Naturally, I decided to combine Notion and GitHub into one self-hosted MCP server because, hey, why not double the challenge? (High ambition is my middle name, right before high caffeine consumption.) …

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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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