MMuhammad Afzal Kalwar1d ago · 7 min readHow My Google Voice AI Agent Knows When to Talk: Call-State Detection, Groq and TTSMost AI voice demos start with a telephony API. You get webhooks, clean call events and an audio stream, and the interesting problem is the conversation. My Google Voice Dispatch Agent doesn't get anymafzalkalwardev.hashnode.dev
AAsfaq Leeon1d ago · 28 min readBuilding a Production-Style CRUD API with FastAPI, SQLAlchemy 2.0 and PostgreSQLFrom an empty folder to a Dockerized API, written for developers who already know how to program but are new to the Python/FastAPI world. If you've built REST APIs in Java, C#, Node.js or Go, you alrleeonscoding.hashnode.dev
MMemorySync2d ago · 5 min readLangGraph AsyncPostgresSaver: fixing 'psycopg.OperationalError: the connection is closed' in FastAPIUpdated 2026-10-29. Symptom: your LangGraph app works with MemorySaver, but after you switch to AsyncPostgresSaver behind FastAPI, the first request that touches a checkpoint raises psycopg.Operationamemorysync.hashnode.dev
WWaqas Shahid3d ago · 2 min readFastAPI Explained: Python APIs at Full SpeedIntroduction Python (covered earlier) is beloved for readability, but its classic web framework Flask was built for websites, not APIs, and leaves validation and documentation to you. FastAPI, releasepracticaldevblog.hashnode.dev
HHimani5d ago · 6 min readPython for PHP Developers, Part 5: Refresh Tokens in FastAPIThis is Part 5 of a series. Catch up on Part 1: A Practical Crash Course, Part 2: FastAPI with a Real Database, Part 3: JWT Authentication, and Part 4: Testing FastAPI with pytest. In Part 3, we issuehimanitayal.hashnode.dev
XXinru Tang6d ago · 4 min readI put an MCP server inside a desktop app so Claude can make videos on my machineI've been building ViralMint — an open-source desktop app that scouts trending videos, clips long videos into shorts, and generates AI videos locally. FastAPI backend, React frontend, the heavy liftin1xinrutang.hashnode.dev
SSammishra KhOct 23 · 10 min readBuild a Free AI Support Chatbot with FastAPI, Groq, and Vercel (Complete Guide)If you've wanted to add an AI chatbot to a website but assumed it needs a paid OpenAI account, a vector database cluster, and a weekend of DevOps — this guide is for you. We'll build a customer supporsammishra.hashnode.dev
HHimaniOct 19 · 4 min readPython for PHP Developers, Part 4: Testing FastAPI with pytestThis is Part 4 of a series. Catch up on Part 1: A Practical Crash Course, Part 2: FastAPI with a Real Database, and Part 3: JWT Authentication. In Parts 2 and 3, we built an API with a database and JWhimanitayal.hashnode.dev
江江流石Oct 18 · 2 min readBuild a Small FastAPI Endpoint with Codex CLI on AgentRouter Free Sign-Up CreditYou have a Python function and want other apps to call it over HTTP. FastAPI makes that a few lines, and Codex on free sign-up credit can write them with a test. 1. Use a relay that supports Codex On jliushi.hashnode.dev
AAmey PoteOct 16 · 36 min readBuilding an Offline RAG Chatbot: From Semantic Search to LLM Inference with Flask, Chroma DB, Sentence Transformer, Re-ranker and OllamaFrom semantic retrieval to streaming LLM responses in a disconnected enterprise environment A Retrieval-Augmented Generation (RAG) chatbot is often demonstrated with a few lines of code, a vector dataameypote.hashnode.dev
