A buddy and me have been working on https://microfn.dev for a while: A platform for creating, managing and composing tiny (micro) javascript functions and using them from different places like webhooks, cron, MCP or AI agents.

It's still very heavy in development but the gist is: Say you have a cool idea for something small you want to automate or run - instead of thinking about hosting, workers, lambdas and what not, you just open microfn, open the editor (or the function generator), write your function, hit save - done! All the complexity is tucked away on microfn, and your place of use just has to authenticate with microfn and nothing else. We run it for you and keep you productive.

Now you can use that function from anywhere: From the terminal, periodically with a cron, add it to an AI agent as skill, use it through an MCP (not released yet), through Siri shortcuts, share it with your friends and so on.

Say you want to have an agent or function that gets the weather and sends it through Telegram: You can either quickly generate 2 functions through the AI function generator that get the weather ("I want a function that gets the weather for Tokyo") and another one for sending a message on telegram, or you can use what's already available (such as https://microfn.dev/david/getweathertokyo). Equipping them to an agent works like in a video game - each function is a new "skill" or "tool" the agent can use, and if someone else already has some cool skills, you can fork them without needint to re-implement everything from scratch.

So like a toolbox full of small composable hammers and tools that can be used across different scenarios and places, to be plugged into existing workflows, automation or to even be used in autonomous agents and through MCP.

Again, super heavy in development and not really a 1.0 yet, more like an early alpha, but wanted to share here anyway. Feedback greatly appreciated!

Sounds neat, but please make testing first class - it should be easy to run functions locally, or to have the same code "infrastructure" run in dev/test/prod environments, etc