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Show HN: Simple to build MCP servers that easily connect with custom LLM calls (mirascope.com)

57 points by wbakst ↗ HN
Hi!

After learning about MCP, I'm really excited about the future of provider-agnostic, re-usable tooling.

Unfortunately I've found that while it's easy to implement an MCP server for use with tools that support it (such as Claude Desktop), it's not as easy to implement your own support (such as integrating an MCP server into your own LLM application).

We implemented a thin MCP wrapper that easily integrates with Mirascope calls so that you can hook up an MCP server and client super easily to any supported LLM provider.

Excited to see what people build with this!

25 comments

[ 1.9 ms ] story [ 70.4 ms ] thread
sbpayne
This is great! I personally found the original Anthropic MCP documentation pretty lacking in terms of how Claude Desktop used the MCP server(s), constraints, etc. For example, there is a pretty hard timeout which will cause the MCP server to crash.

Glad there's a simple to use solution for creating my own server where I can make some different design choices!

wbakst
Totally! When it was first released, I really liked the idea, but it felt super early (which is to be expected!)

I immediately wanted to write a custom agent that used an MCP server and that inspired building this. Glad you like it!

digdugdirk
Just chiming in to say how much I've enjoyed using mirascope! It really seems to nail that sweet spot of abstracting juuuust enough to get the busy work out of the way, without ever being a pain in the rear.

Two thumbs up!

wbakst
This put such a big smile on my face!

“Abstractions that aren’t obstructions” is always the goal, feels good to hear you say we’ve hit that sweet spot :)

lordswork
This looks very useful.

Unimportantly, I wonder how the copyright date is 2023 when MCP didn't exist until 2024.

wbakst
We released the first version of Mirascope in Dec 2023. I’m under the impression that would make it the right date?
lordswork
Did Mirascope exist before MCP? MCP was announced in November, 2024.
wbakst
Yeah we built support for MCP as part of the existing library that contains other LLM related abstractions
ghilston
I hadn't heard of miracope before, so thanks for sharing. I like how the website shows examples of source code for interscting with different providers using miracope and not. That was exactly what I was interested in.

With respect to MCP servers, I saw the comment below about integration with librechat. Is there any other documentation on integrations with other self host able solutions? Be it ollama or other.

ionflow
I’ve recently started moving all our structured output calls over from instructor to mirascope and will not be looking back. So this is gonna give me the push to take MCP more seriously especially on our internal workflows and tasks.
wbakst
I won’t tell Jason…
wbakst
Best part of MCP is that it’ll just work with anything else that supports it (like Claude, Cursor, etc.)
amelius
Aren't LLMs smart enough now to communicate with __any__ API?
wbakst
Unfortunately not quite :(

You can definitely have them generate tools for APIs on the fly, but it’s not nearly robust enough yet

codenote
I’m glad I got to know about Miracope just when I needed to implement custom support for MCP. Thank you!