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Blog Archives

18
Sep
Getting Started with RAG APIs: A Practical Developer Tutorial
Getting Started with RAG APIs: A Practical Developer Tutorial

TL;DR This hands-on tutorial walks you through getting started with RAG APIs and building your first RAG-powered application from scratch. You’ll learn to set up a RAG API, upload your data sources, create a functional chat interface, and deploy a […]

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17
Sep
RAG API vs Traditional LLM APIs: When and Why Developers Choose RAG
RAG API vs Traditional LLM APIs: When and Why Developers Choose RAG

TL;DR The choice between RAG API vs traditional LLM APIs comes down to accuracy, currency, and domain expertise. Traditional LLM APIs like OpenAI’s GPT-4 provide broad general knowledge but suffer from knowledge cutoffs, hallucinations, and lack of domain-specific expertise. RAG […]

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16
Sep
What is a RAG API? Building AI Applications with Retrieval-Augmented Generation
What is a RAG API? Building AI Applications with Retrieval-Augmented Generation

TL;DR A RAG API (Retrieval-Augmented Generation API) is a service that combines AI-powered search with text generation to create applications that can answer questions using your specific data. Instead of relying on pre-trained knowledge that becomes outdated, RAG APIs dynamically […]

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15
Sep
RAG API Explained: Complete Developer Guide to Retrieval-Augmented Generation APIs in 2025
RAG API Explained: Complete Developer Guide to Retrieval-Augmented Generation APIs in 2025

TL;DR RAG APIs combine the power of large language models with your own data sources to create AI applications that are accurate, current, and contextually relevant. Unlike traditional LLM APIs that work with pre-trained knowledge, RAG APIs retrieve information from […]

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03
Sep
starterkit
Announcing CustomGPT Developer StarterKit: Open Source UI for Your RAG Applications

TL;DR: We’re open-sourcing a complete, production-ready UI StarterKit for CustomGPT.ai’s RAG API. MIT licensed. Voice mode included. Deploy anywhere. Try the instant demo. Or clone it on GitHub. See the live embed below! The Problem We All Know Too Well […]

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14
Jul
mcp client cover image
What is an MCP Client? An Advanced Guide for Developers

In the evolving landscape of AI integrations, the Model Context Protocol (MCP) has emerged as a pivotal standard for connecting large language models (LLMs) with external data sources and tools.  While MCP encompasses both client and server components, this guide […]

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11
Jul
mcp features
The Model Context Protocol (MCP): A Deep‑Dive Into Its Core Features in 2025

TL;DR, MCP is the “USB‑C for AI tools.” It defines a universal JSON‑over‑HTTP interface that lets any language model dynamically discover, describe, and invoke external capabilities, without bespoke adapters. In this post we unpack each feature of MCP, share sample […]

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09
Jul
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What Is an MCP Server? (Advanced Guide)

Quick vibe‑check: If you’re still googling “What is JSON?” this article will hurt your feelings. We’re talking to the folks who bliss‑edit YAML in Vim and dream in HTTP status codes. Ready? Cool, let’s nerd‑out … with a smile. Role […]

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03
Jul
customgpt.ai postman collection blog
How to Use the CustomGPT.ai API with Postman – 2025 Quick-Start Guide

Hello folks, in this article, we will see how to use our API collection via hosted CustomGPT.ai Postman Collection. Why Postman & Prerequisites Postman remains the fastest way to test, debug, and document every endpoint in the CustomGPT.ai API—even if […]

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20
Jun
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MCP AMA Community Question and Answers

Last month (on 29th May) we hosted a live AMA on the Model Context Protocol (MCP), fielding over 40 insightful questions from engineers, architects, and AI enthusiasts around the world. We couldn’t answer every query in real time, so below […]

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