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Usage-Based Billing for AI Agents with FastAPI and Kong

Teja Kummarikuntla3d ago • 19 min read

Usage-Based Billing for AI Agents with FastAPI and Kong

If you've built an AI agent, the next question is simple: how do you charge for it? Flat...

#ai#programming#webdev#fastapi

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JWT Refresh Token Rotation in FastAPI — The Right Way

Ugur AslimMay 22, 2026 • 3 min read

JWT Refresh Token Rotation in FastAPI — The Right Way

Most JWT implementations have a silent security flaw: refresh tokens that never expire. Here's how t...

#fastapi#security#python#jwt

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The Pipeline Nobody Builds After DESeq2 Finishes

Oluwagbade Odimayo3d ago • 12 min read

The Pipeline Nobody Builds After DESeq2 Finishes

A production-grade differential expression pipeline with biological validation, FastAPI, and an...

#bioinformatics#python#fastapi

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I Built a Multi-Tenant SaaS for 50+ Tenants — Here's the Complete Architecture

Ugur AslimMay 22, 2026 • 9 min read

I Built a Multi-Tenant SaaS for 50+ Tenants — Here's the Complete Architecture

End-to-end multi-tenant SaaS architecture from database to frontend: PostgreSQL RLS, JWT design, RBA...

#postgres#fastapi#react#architecture

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What 22 CI runs taught me about the gap between local dev and production

mgoolden17-cyber3d ago • 8 min read

What 22 CI runs taught me about the gap between local dev and production

Building a FastAPI app for a portfolio piece. Local tests passed. CI failed twenty-two times. Each f...

#python#fastapi#cicd#devops

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Bedram Tamang1d ago • 5 min read

How to Structure a FastAPI Application

FastAPI is one of the best Python web frameworks available today — fast, async-native, and backed by...

#fastapi#bootstrap#python#api

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Beyond Prompting: Building a 4-Stage LLM Compiler with Surgical Self-Repair

Quratulain Nayeem3d ago • 3 min read

Beyond Prompting: Building a 4-Stage LLM Compiler with Surgical Self-Repair

A single prompt often yields inconsistent, unvalidated AI output. To fix this, I built Compyl a...

#ai#docker#fastapi#llm

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GitHub Actions for Parallel FastAPI + React Testing: Optimizing CI/CD Feedback Loops in Monorepos

Ugur Aslim6d ago • 4 min read

GitHub Actions for Parallel FastAPI + React Testing: Optimizing CI/CD Feedback Loops in Monorepos

Configure GitHub Actions to spin up isolated PostgreSQL instances, run FastAPI tests and React compo...

#githubactions#cicd#testing#fastapi

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I Built Cuekiyo: a Local-First Anime OP/ED Video Pipeline with React, FastAPI, yt-dlp and FFmpeg

Looped5d ago • 8 min read

I Built Cuekiyo: a Local-First Anime OP/ED Video Pipeline with React, FastAPI, yt-dlp and FFmpeg

I just released Cuekiyo v1.0.0, an open-source local web app for building anime opening and ending.....

#opensource#react#fastapi#ffmpeg

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Streaming AI Responses in React 19: Building Real-Time Claude Integration Without the UX Jank

Ugur Aslim5d ago • 5 min read

Streaming AI Responses in React 19: Building Real-Time Claude Integration Without the UX Jank

Skip the loading spinners and implement true streaming from Anthropic Claude's API through FastAPI t...

#react19#fastapi#anthropicclaude#streaming

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"Centralizing billing across 5 products triggered a 403 nobody saw coming"

Takayuki Kawazoe6d ago • 8 min read

"Centralizing billing across 5 products triggered a 403 nobody saw coming"

We flipped USE_BCP=true on Red at 14:02. The first 403 hit Sentry at 14:06. By 14:11 the pattern was...

#multitenant#saas#fastapi#billing

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Testing FastAPI + SQLAlchemy with Real PostgreSQL Fixtures: No More Mocking Misery

Ugur Aslim6d ago • 5 min read

Testing FastAPI + SQLAlchemy with Real PostgreSQL Fixtures: No More Mocking Misery

Use Docker and pytest fixtures to spin up isolated PostgreSQL databases for each test run, catching ...

#fastapi#sqlalchemy#postgres#testing

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Live chain-of-thought in a chatbot: how to actually stream the tool calls (not just the text)

Bernard Uriza1d ago • 6 min read

Live chain-of-thought in a chatbot: how to actually stream the tool calls (not just the text)

Most "streaming" LLM chatbots stream just the text. The model says "I'll search for that…" and then....

#ai#python#fastapi#react

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I Got Tired of SNMP Dev Hell, So I Built Trishul SNMP Suite

Sumit Dhaka2d ago • 5 min read

I Got Tired of SNMP Dev Hell, So I Built Trishul SNMP Suite

Trishul SNMP Suite is a free, self-hosted, browser-based SNMP dev toolkit — simulator, walker, trap ...

#snmp#python#fastapi#opensource

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How I Built a Programmatic SEO Site with 16,750 Pages Using FastAPI and PostgreSQL

Ujwal Jayendran3d ago • 5 min read

How I Built a Programmatic SEO Site with 16,750 Pages Using FastAPI and PostgreSQL

A deep dive into building BSBFinder.com — a free Australian BSB number lookup tool — from data...

#webdev#python#seo#fastapi

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Inside an MCP-Native Content Workflow Engine — Here's What Actually Broke (and What Finally Made Sense)

Preetha2d ago • 9 min read

Inside an MCP-Native Content Workflow Engine — Here's What Actually Broke (and What Finally Made Sense)

I started this project thinking, "Let me try this MCP thing." I didn't expect to end up rebuilding.....

#mcp#contentops#aiops#fastapi

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How I secured my FastAPI app - 6 vulnerabilities fixed in one session with gstack /cso

RateCalc2d ago • 2 min read

How I secured my FastAPI app - 6 vulnerabilities fixed in one session with gstack /cso

I've been building ratecalc.fyi — a free sponsorship rate calculator for UGC creators — for 16 days....

#security#fastapi#python#buildinpublic

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I built a production-ready FastAPI SaaS boilerplate — here's what's in it

Lorenzo6d ago • 2 min read

I built a production-ready FastAPI SaaS boilerplate — here's what's in it

Every time I start a new backend project I waste the first two days on the exact same things: JWT...

#python#fastapi#webdev#programming

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MondiMay 22, 2026 • 1 min read

htmforge v0.4.0 released

v0.4.0 One week out — here's what changed. Added Page.lang The...

#python#htmx#api#fastapi

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I built and deployed an IP Geolocation API from scratch in one day — here's the full stack

Ing. Pablo Cueto1d ago • 1 min read

I built and deployed an IP Geolocation API from scratch in one day — here's the full stack

No third-party black boxes. No vendor lock-in. Just clean Python code, two free data sources, and a....

#python#fastapi#cybersecurity#backenddevelopment

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FastAPI Patterns You Should Be Using in Production

Shayan Holakouee3d ago • 6 min read

FastAPI Patterns You Should Be Using in Production

FastAPI is already fast to build with — but are you using it to its full potential? ...

#fastapi#python#backend#ai

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Build an LLM Router with pydantic-ai: Route Prompts to the Cheapest Model

Wade Allen3d ago • 2 min read

Build an LLM Router with pydantic-ai: Route Prompts to the Cheapest Model

How I Built an LLM Router That Cut My API Costs in Half The Problem Last month,...

#python#ai#llm#fastapi

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Trishul SNMP Suite 2.0.1: Better MIBs, Traps, and SNMP Labs

Sumit Dhaka4d ago • 8 min read

Trishul SNMP Suite 2.0.1: Better MIBs, Traps, and SNMP Labs

Trishul SNMP Suite 2.0.1 turns a useful SNMP UI into a cleaner bundle-first platform with in-house M...