kilospark.hashnode.devDebug Stripe Webhooks Without Guessing What Your Server Sends BackYou get a Stripe webhook. Your server processes it. Something breaks — maybe the charge succeeds but your database doesn't update, or the customer gets double-charged. The problem isn't Stripe. It's that you can't see what your server is actually sen...Feb 15·2 min read
kilospark.hashnode.devWhat Open Source Maintainers Miss in Large PRs (And How to Catch It)Large pull requests are where bugs, security issues, and breaking changes go to hide. If you maintain an open source project, you've been there: a 400-line PR lands in your review queue. You scroll through it, skim the obvious parts, approve it, and ...Feb 15·4 min read
kilospark.hashnode.devThe 5 Riskiest PRs Merged to Popular Open Source Projects This WeekEvery week, thousands of pull requests get merged to major open source projects. Most are routine — dependency bumps, typo fixes, small refactors. But some are high-risk changes that touch critical paths, come from first-time contributors, or modify ...Feb 15·4 min read
kilospark.hashnode.devHow I Debug OpenAI API Calls Without Any SDKYou're building with the OpenAI API. Maybe directly, maybe through LangChain, maybe through an MCP tool. Something isn't working — the response is wrong, the model is ignoring your system prompt, or you're getting rate limited and don't know why. You...Feb 15·4 min read
kilospark.hashnode.devWhat Your AI Agent Actually Sends to APIs (And Why You Should Care)You built an MCP tool that creates Stripe charges. You tested it. It works. A customer gets double-charged. Now what? You open your logs. The LLM decided to call your create_charge tool twice. Or maybe once with weird parameters. Or maybe your tool c...Feb 15·4 min read