MCP OAuth 2.1: your server is the bouncer, not the ticket office
Under MCP OAuth 2.1 your remote server checks tokens and never issues them. The part tutorials skip is refusal: the audience check, and guarding every route.
Presso Network, a boutique MCP studio
We build MCP apps, tools your AI can use to get real work done. Here’s everything we’ve built. See what each one does, and add it to Claude or ChatGPT in a minute.
3 apps · 59 skills · 50 knowledge packs
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Each one is its own product with its own home. Add any of them to your AI.
Step-by-step jobs your AI can do. They come with Corey, so adding Corey adds all of them.
Marketing
Sales
Operations
Finance
Management
Getting set up
Building
Researched reference your AI reads before it acts, so it works from current facts, not guesses. They also come with Corey.
Marketing
Sales
Operations
Finance
Building
Pick an app
Open its page here. It says what the app does, what it does not, and what it keeps about you.
Add it to your AI
In Claude or ChatGPT, add it as a connector with the address on the app page, or follow its setup guide.
Ask for what you need
Talk to your AI as you normally would. It uses the app when the job calls for it, and asks before anything that matters.
New to this? What an MCP app is, in plain English.
Under MCP OAuth 2.1 your remote server checks tokens and never issues them. The part tutorials skip is refusal: the audience check, and guarding every route.
An MCP server exposes your system to someone else's AI, not to a developer. Mapping one tool per API endpoint feels thorough and makes the model do five hops to answer one question. Here is how to spot the pattern and design task-shaped tools instead.
Building an MCP server from scratch means picking tools over endpoints, wiring auth before the first tool call, and shipping to a real host before you trust it. Here is what that actually looks like, including the three defects we found in our own admin server within hours of merging it.
Presso Network Ltd is a small UK studio. We build MCP apps the careful way: tested in staging first, honest about what each one cannot do, and run by us after launch.
About the studio · How we work
Got an idea for an MCP app? Tell us and we’ll see if we can build it.