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An MCP server for your SaaS, so it works inside Claude and ChatGPT

Customers are starting to ask whether your product works with their AI assistant. An MCP server is how it does: Claude and ChatGPT call your product’s actions as tools. This one is built over the REST API you already have, deployed to your own cloud account, and ready for directory submission.

Pay $2,500 & startAdd OAuth sign-in (+$1,000)

$2,500 fixed price, 10 business days after your API docs and a test key arrive. OAuth sign-in is a $1,000 add-on.

No call needed. Questions go to contact@app369.com; we reply by email, usually within one business day.

This fits when

  • You have a documented REST API with API keys or personal access tokens
  • Customers ask to use your product from Claude or ChatGPT
  • You want a listing in the Claude or ChatGPT connector directories
  • Your team has no time to learn the Model Context Protocol
Offer 03

MCP Connector for your SaaS

Make your product work inside Claude and ChatGPT: an MCP server built over the REST API you already have.

$2,500
fixed price, OAuth sign-in +$1,000

You get

  • An MCP server exposing up to 8 tools over your existing, documented REST API
  • API-key or personal-access-token auth
  • Deployed to your own cloud account (Cloud Run, Workers or Vercel)
  • Tested in Claude and ChatGPT clients
  • A README plus a directory-submission packet: listing copy, screenshots and privacy notes

Add-on

  • OAuth sign-in, +$1,000

Not included

  • New API endpoints
  • Any guarantee of directory approval; that is up to each directory

Delivery

10 business days after your API docs and a test key arrive.

Simon built and runs the MCP server for Workspace369.

Pay $2,500 & startAdd OAuth sign-in (+$1,000)

Not sure it fits? Email a question about this offer; we reply by email, usually within one business day.

How it works

  1. Step 1

    Pick the tools

    Up to 8 actions from your API, chosen with you in writing: the ones customers would ask an assistant to do.

  2. Step 2

    Build over your API

    The MCP server calls your existing endpoints with API-key or token auth. No new endpoints are needed in your backend.

  3. Step 3

    Deploy to your cloud

    Deployed to your own Cloud Run, Cloudflare Workers or Vercel account, so you own and control it.

  4. Step 4

    Test and hand over

    Tested in Claude and ChatGPT clients, with a README and a directory-submission packet: listing copy, screenshots and privacy notes.

Questions before you pay

Do I need OAuth?
Not to start. API keys and personal access tokens work for many products. Directories and larger customers often expect OAuth sign-in, which is the $1,000 add-on.
Will my connector be approved in the directories?
That decision belongs to each directory. You get the submission packet; approval is not guaranteed.
Who has built this before?
Simon built and runs the MCP server for Workspace369, his own production SaaS.
What if my API doesn’t have the endpoints a tool needs?
New API endpoints are outside the fixed scope. They can be quoted separately in writing.
Do I need a call before I pay?
No. The scope, price and delivery time are on this page, and everything happens in writing. If you want to talk live, calls cost $100 per 15 minutes, paid upfront.
Who owns what you deliver?
You do. The code, videos and files delivered under this offer belong to you once paid.

Ready to start?

Pay online and send what the work needs by replying to the Stripe receipt. Simon, who builds and runs the Flutter and Firebase SaaS Workspace369, does the work himself.

Pay $2,500 & startAdd OAuth sign-in (+$1,000)

Further reading

Other fixed-price offers

Fixed scope, fixed price, paid upfront. The work happens in writing; no call needed.