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Ask HN: Who is using MCP in production?

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171–180 of 217 posts

Re: Ask HN: Who is using MCP in production?

#171
SaaS where I work has an MCP, it's popular with our customers. They can use it without knowing what a CLI is, just from however they use their AI.

I use MCP all the time at work as well from Claude code etc, it's convenient with uniformity of configuration and access inside the harness.

Re: Ask HN: Who is using MCP in production?

#172
What do you mean "using MCP in production"?

Like as a deployed component in our customer facing app stack? Not being used in that context that I'm aware of. I think there's a couple use cases being worked on though.

Are devs/engineers using MCPs to do their work? Yeah. Datadog MCP, Atlassian MCP, Gitlab MCP, backstage mcp, and we have our documentation behind an MCP. All used daily.

Re: Ask HN: Who is using MCP in production?

#173
post #97

MCPs are diminishing in value a bit, because AI Agents are getting smarter about using API/CLIs. For example, I use gh cli via Claude instead of their MCP, because I already had cli setup, so no need to use MCP. MCPs can potentially have great value if they cross multiple sources and combine results. For example at work we use an in-house MCP for log/metrics search across five different (legacy) systems. It finds cor…

MCP doesn't expose service credentials to the AI.

This is not true by default. There are plenty of poorly implemented MCP servers which do that. The MCP spec supports Oauth and intends to avoid that but it is not enforced.

Re: Ask HN: Who is using MCP in production?

#175

Earlier quoted context omitted.

This. We also thought MCP was useless, but now the workflows by ChatGPT and Claude are so good; it's as good as installing an app from the App Store. We launched MCP for our SaaS and immediately found users using it. API and MCP all are just buzzwords for customers. What they care about is whether they can get tasks done in our SaaS using Claude or ChatGPT. If that happens, it's a success.

Do you not expose a standard REST api?

We do. MCP works on top of it.

I say MCP is just lightweight layer on top of REST and as long as it works for end users I don’t see any reason not to adopt it.

Re: Ask HN: Who is using MCP in production?

#176
post #97

MCPs are diminishing in value a bit, because AI Agents are getting smarter about using API/CLIs. For example, I use gh cli via Claude instead of their MCP, because I already had cli setup, so no need to use MCP. MCPs can potentially have great value if they cross multiple sources and combine results. For example at work we use an in-house MCP for log/metrics search across five different (legacy) systems. It finds cor…

gh cli prbly has a lot of training data so maybe not a fair comparison

Re: Ask HN: Who is using MCP in production?

#177

Earlier quoted context omitted.

I see benchmarks a lot working on this, and I honestly think there’s too many things to cover in this comment but: - this article doesn’t enable tool search for starters where tokens start at near zero for MCP too - even with the above, talks of the raw token count don’t consider that for very long trajectories the prompt cache amortises much of this cost, and a feature of MCP is you can also customise the tools to a…

> - this article doesn’t enable tool search for starters where tokens start at near zero for MCP too Is that why I have to constantly remind Claude and ChatGPT that they do have access to a Github plugin that can access my account, instead of trying and failing to use the gh cli?

Most likely, personally I have thoughts on tool search, I don’t believe it’s the final stop on the road to MCP progressive discovery, but it does have its uses. Especially for very large tool catalogues.

Expect more on this. We are looking at the problem.

Re: Ask HN: Who is using MCP in production?

#179
I made an MCP for myself that syncs all my Microsoft mail into a local sqlite db and exposes it as read-only to the agent. `query` tool can do search (FTS5 match) or browse (by date) on mailboxes/threads and returns lists of email with FTS5 snippets + paging. `get` reads multiple emails by id.

It's very fast: most queries finish in < 10ms. Agents are able to find things quickly and efficiently even with vague questions. The app does a few things to minimize token output, but there's a long tail of potential token reduction strategies that I haven't gotten to yet.

Re: Ask HN: Who is using MCP in production?

#180

Earlier quoted context omitted.

MCP is not just a rest api its a layer on top

A layer than honestly doesn't do much, as I understand it. What does MCP as a protocol actually solve? Is it more than a bandwagon?

Im not deep in there, but Id guess it offers some discovery mechanisms? (not sure if my understanding is correct)
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