Show HN: MCP Generator for Your API

16 sagivo 13 6/25/2025, 4:38:07 PM mcp.liblab.com ↗
Hey HN, Sagiv from liblab is here.

We've been deep in the world of API tooling for years at liblab, primarily focusing on generating SDKs and documentation from OpenAPI specs. Recently, we kept running into a recurring frustration: connecting AI tools to existing APIs is way more complex than it should be.

You start with a simple goal – let an LLM talk to your API – and suddenly you're neck-deep in spinning up infrastructure, wrestling with authentication, and writing a ton of custom glue code just to translate natural language into structured API calls. Then you have to maintain it all.

To scratch our own itch, we built the MCP Generator.

It takes your API specification and generates a fully functional MCP (Model Context Protocol) server that's deployed to the cloud and ready to use in about 30 seconds. You can also download the server for free local usage. The idea is to cut out all the boilerplate and manual integration work. You just drop the generated URL into your AI tool, and you can start interacting with your API through natural language right away.

This builds on our existing SDK code generation engine, but extends it to support the MCP protocol. This means that as your API evolves, your MCP server can be regenerated to stay in sync without you needing to touch a thing.

We've seen some interesting early uses, and thought the HN community might have some cool ideas too:

- Building devtools that allow LLMs to perform actions against your internal or external APIs. - Querying internal metrics or services using natural language questions. - Surfacing structured documentation and content through conversational AI interfaces. - Speaking with your API service instead of coding functions.

We just launched and would genuinely love to get your feedback, thoughts, and even your most challenging edge cases. We're here to dive into the technical details and answer any questions.

You can try it out here: https://mcp.liblab.com/

Looking forward to hearing what you think!

Comments (13)

davidrll · 4h ago
In my team, we have people responsible for handling various questions, but some of them are technical related to our business. However, they have limited familiarity with the product (technical side) itself, and while we have an API that contains a substantial amount of information, they and other people in similar roles typically find it challenging to consume data directly from APIs without a visual interface. Recently, we have been exploring natural language solutions via MCP to address this challenge.

Some MCPs require payment and may not function properly. I am interested in trying your solution, as I have previously used your SDK generator with the CLI, which worked well.

I appreciate that you offer a free tier. I will test it and observe how well it performs. If I encounter any issues, I will reach out again.

bears4barrett · 3h ago
Amazing to see. Thanks! I already started playing with the example in Claude and it works!
shubaduba · 4h ago
Congrats on the launch! always great to see new tools expanding the MCP ecosystem! Does it support Swagger specs?
sagivo · 4h ago
Yes, because it's built on top of liblab SDK generator, we support any format that liblab SDK supports: https://liblab.com/docs/reference/spec-support
ubiquitor · 4h ago
Very cool! So how do you handle APIs with highly dynamic or nested schemas—like ones that return different structures based on input parameters or feature flags?
sagivo · 3h ago
we have a built-in support in the liblab SDK generator for complex types like OneOf, AnyOf and AllOf
cyclepunk · 4h ago
the other day I was actually wondering what's the easiest way to play with my home project API and LLMs and this looks straight forward, will give it a try
developerDuck · 4h ago
This sounds great! But the docs on Claude are pretty bad. Do you have any instructions on how to connect the generated MCP with Claude?
sagivo · 4h ago
We're working on improving the interface to include clear instructions for connecting the MCP to LLMs. In the meantime, you can follow the integration guide available here: https://liblab.com/docs/mcp/howto-connect-mcp-to-claude
wrappingox · 4h ago
This looks like a great step forward for API and AI integration. Nice work!
shubidubi · 4h ago
Does it work with Cursor?
sagivo · 4h ago
Yes, the liblab MCP generator works with any MCP client (including Cursor, windsurf, Claude etc..)
milequa · 4h ago
it's amazing to see how fast MCP ecosystem is evolving, this looks very good