> ## Content Index > Fetch the complete content index at: https://apisyouwonthate.com/llms.txt > Use this file to discover other available public pages before exploring further. # Extending OpenAPI - URL: https://apisyouwonthate.com/newsletter/extending-openapi/ - Published: 2026-07-15T11:33:52.000Z - Updated: 2026-07-15T11:33:52.000Z - Description: One of OpenAPI's unsung heroes is its ability to be extended elegantly. Also in this dispatch: Gin, the HTTP framework for Go, Upyo for sending email, Leaf Wiki, and the HTTP OPTIONS method. - Author: Alexander Karan - Tags: 📰 APIs You Won't Hate (The newsletter) If you use OpenAPI long enough, you may eventually hit a roadblock. Honestly, the main response I see is to give up and walk away, but did you know OpenAPI can be extended? [Kin Lane has a great breakdown](https://apievangelist.com/2026/06/26/tyk-and-the-quiet-superpower-of-extending-openapi/?ref=apisyouwonthate.com) of an API Gateway extending the specification. OpenAPI also has a registry for all [types of extensions](https://spec.openapis.org/registry/index.html?ref=apisyouwonthate.com). Registering something you built here also helps the OpenAPI team decide what to adopt in their roadmaps. \-- Alexander --- ### [Building Gin: Simple Over Easy](https://manualmeida.dev/articles/gin-simple-over-easy/?ref=apisyouwonthate.com) Did you know Gin was built to power a social network? Gin is one of the best HTTP frameworks for Go, created by Manu Martínez-Almeida. Manu walks us through what inspired him to build Gin and how it has since grown without him. A great read on how aiming for simplicity, not complexity, made things easy to use and for others to build on. ### [Finally, a Great Email API](https://upyo.org/?ref=apisyouwonthate.com) I honestly f\*\*\*ing hate plugging in email providers to a backend. You normally end up switching providers, encountering runtime issues, or dealing with breaking API changes. Well, no more. Finally, a unified API that runs in all JS runtimes and swapping providers is a single-line change; how I have longed for this. ### [Seeking CMMS people](mailto:apisyouwonthate.com@gregwolanski.com?subject=%5BAPIs%20You%20Won't%20Hate%5D%20CMMS%20People) Do you work with CMMS (**not** *CMS* 😄) APIs? Greg Wolanski is working on a research project and would love to learn from your experience. [Email Greg to schedule a paid interview](mailto:apisyouwonthate.com@gregwolanski.com?subject=%5BAPIs%20You%20Won't%20Hate%5D%20CMMS%20People). `sponsored` ### [Postgres to API with Prest](https://github.com/prest/prest?ref=apisyouwonthate.com) Do you need a simple API layer on top of your Postgres? Well, say hello to Prest. Smash out a quick REST API on top of your DB, a nice, quick, low-code solution. ### [Discovering features using HTTP OPTIONS](https://evertpot.com/discovering-features-with-http-options/?ref=apisyouwonthate.com) I have talked to many developers who have no idea what `OPTIONS` actually is. It has a few uses, but its main one is to help clients find out what is possible here. Evert Pot gives us a delightful walk-through on everything `OPTIONS` can do. An easy, fun read. Thank you, Evert. I enjoyed this one a lot. ### [Leaf Wiki](https://github.com/perber/leafwiki?ref=apisyouwonthate.com) Not strictly API focused, but a wonderful, easy-to-deploy docs or wiki. A single Go binary using SQLite and Markdown. No external database, it just works. They have a wonderful [little demo](https://demo.leafwiki.com/home?ref=apisyouwonthate.com) you can check out as well. ### [FastAPI Cloud](https://fastapicloud.com/?ref=apisyouwonthate.com) If you're out of the loop, a while back, FastAPI launched its own cloud platform for deploying and scaling your FastAPI applications. Recently, their website and docs got a makeover. Last time I checked in on this, it was still in beta and has come a long way since then. 🗞️ ****Have something to share?** Classified ads are short, text-only placements available for [$100 per issue](https://workspace.passionfroot.me/apisyouwonthate/packages/5cc9cd89-9bbc-430f-b81a-2536fdbe8429/book?ref=apisyouwonthate.com). ## APIs You Won't Hate *The latest from the team at API's You Won't Hate.* ### [The Strangler Fig Pattern: How to Rebuild Everything](https://mikebifulco.com/newsletter/stangler-fig-pattern?ref=apisyouwonthate.com) A crossover from Mike's 💌 *Tiny Improvements* newsletter, he talks about a software engineering pattern used when it's time to rebuild everything... responsibly. This one's broader than APIs - architecture, framework, the kitchen sink - it all fits in here. --- ## From the Community *Articles written and shared in our free* [*Slack community*](https://slack.apisyouwonthate.com/?ref=apisyouwonthate.com)*.* ### [Prototype to Operator](https://bsky.app/profile/mikebifulco.com/post/3mq2kgy4itc2c?ref=apisyouwonthate.com) Our very own Mike recently shared his thoughts on extended support in our [Slack group](https://apisyouwonthate.slack.com/archives/C0HGJS734/p1783431112604419?ref=apisyouwonthate.com). So many docs, SDKs, and APIs focus on getting you started but not on long-term use, scaling, and high-use gotchas. Personally, I chalk this up to open-source contributors having limited time, or to new customers being a priority for the business, not existing ones. He is right; however, I wish more places had time or resources for this level of care. ## Support APIs You Won't Hate When you become an member, you'll get access to members-only content while directly supporting our work. Your support helps us to keep making resources for the API community. [Become a member today](https://apisyouwonthate.com/#/portal) Thanks so much to our members: **Kin**, **Juxt, Alex R, Nolan S, Brandon K, Frank, James D, Bill D,** and **Abdelhadi D**. Your support means the world to us! ✌️ Until next time, Alexander, Phil & Mikes