M3O – Universal Public API Interface
Hey all, I'm Asim, the founder of M3O, a curated catalog of APIs that provides simple abstractions for the most common API use cases. The idea is to create a single place to explore, discover and consume public APIs as higher level building blocks. Most of the time I don’t use all the features of an API and I assume most devs don't either, so picking and choosing the common patterns, abstracting it away and surfacing a new building block is useful. For example, Twilio has a lot of APIs but I only care about SMS. Even then I just want a quick way to send it. So stripping it all away results…
In plain words
M3O is a curated catalog of public APIs that provides simplified abstractions for common use cases. Instead of navigating complex full-featured services, developers can access streamlined building blocks like SMS messaging or email that expose only essential functionality. The platform lets developers explore, discover, and consume APIs through a single interface, reducing setup complexity for tasks that typically require multiple parameters or extensive documentation.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
Hey all, I'm Asim, the founder of M3O, a curated catalog of APIs that provides simple abstractions for the most common API use cases. The idea is to create a single place to explore, discover and consume public APIs as higher level building blocks. Most of the time I don’t use all the features of an API and I assume most devs don't either, so picking and choosing the common patterns, abstracting it away and surfacing a new building block is useful. For example, Twilio has a lot of APIs but I only care about SMS. Even then I just want a quick way to send it. So stripping it all away results in something that's one endpoint and 3 fields (from, to and message). Another example is something like email. There are services like sendgrid that provide a really feature rich experience for email but I’m just looking for something simple that will let me send plain text or html. There are a number of API marketplaces out there, but we’re doing something different—our goal is to improve productivity. For example, RapidAPI has thousands of APIs, but there’s a lot of duplication. It’s overwhelming for developers. Choice is the enemy of productivity. AWS, on the other hand, offers a curated catalog of services where each focuses on a specific problem. We feel the same: from an API perspective you only need one of each building block. You only need one SMS, Email or Geocoding service. I've been obsessed with this problem since working as an SRE at Google in 2011, seeing how the internal platform and APIs were being used by teams. I then worked at a ride hailing startup called Hailo where we got to build something similar, and experience the velocity of development in shipping products on top of simple, easily discovered APIs. I spent the next few years bootstrapping an open source project called Micro, trying to get people to standardize their API development to reach this goal. Ultimately it took raising funding to take a real shot at it. After seeing the productivity Google unlocked and what Hailo could have done with their platform, it was clear to me it could and should be a product: a single way to consume APIs with one platform, one account and one framework. Our goal is to build an API catalog that can act as the building blocks for most use cases, and then double down on services that have a lot of demand so we can improve the features and reliability. In the wild, every API looks different, the docs are different, you have to figure out if there's client libraries or not. We unify all that, so everything looks and feels the same. All our docs are generated based on OpenAPI specs, and we code generate examples/client libraries for JS, Go, Dart and the CLI. It means you only ever need one client to access all these APIs. Unifying API development and consumption requires a lot of resources to do at scale, hence it's only happening inside fast growing startups and large tech cos. There are a lot of barriers to entry. Getting started isn't easy. Our approach has been to first nail API development for ourselves and then focus on API consumption by end users— ultimately we want to let anyone offer APIs on our platform. That requires enough large scale distribution and inbound traffic to make an attractive proposition to developers. We've spent a year building the product with a lot of feedback on what worked and what didn't. We’ve signed up 8000 people, served 5M API requests and have 60+ APIs on the platform. On billing: we're still figuring it out and would like feedback. It started as a free product, then moved into per request pricing. Unfortunately that's hard to scale without a lot of volume and it felt like people were more used to subscriptions for SaaS products so that's the route we've gone. Anyway that's us, hope you try it out (https://m3o.com), and would love to hear your thoughts in the comments!
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