MCP server · Chat
Jevx MCP server
by hanshs474
Let your AI ask Jev AI to pick between options and give you a probability for each one.
This is a small helper that connects your AI assistant to Jev AI, a service that makes decisions from a description you write. You describe a situation and the options you are choosing between, and it comes back with a pick and a confidence number. It is handy if you often have to choose between a few options and want a second opinion with a rough sense of how sure it is.
What is an MCP server? The 30-second version
On its own, your AI can only chat with you. An MCP server is a small helper program that gives your AI a new skill or a connection to another service. This one connects your AI to Jev AI, a decision service. Once it is set up, you can ask your AI a question and it will pass it to Jev AI and bring the answer back into the chat.
What this MCP server does
You describe a situation and the options you are weighing, in plain words. Your AI sends that to this helper, which passes it to Jev AI. Jev AI looks at your description and picks one option, or gives a score, or a yes or no. It also gives a probability for each option, so you can see how close the call was. Your AI then shows you the result in the chat.
Click to zoomWhat you can do with it
- Pick between two or more named options and show how likely each one is
- Score something on an ordered scale, like low to high
- Get a yes or no answer with a number between 0 and 1
- Check your question is well formed before spending any credits
- Open the same decision in the Jevx browser playground to look at it more closely
Try asking your AI
- “Should we launch the newsletter on Tuesday or Thursday? Here is the situation.”
- “Score how urgent this support ticket is on a scale from low to high.”
- “Is this email likely to be read as friendly or as cold? Give me a number.”
- “Pick between these three subject lines and tell me how close it was.”
What it gives back to you
You get back the chosen option, a probability for each option, and a confidence number. For a score question you get a score instead of a choice. For a yes or no question you get a number between 0 and 1, where exactly 0.5 means the model declined to answer. It all shows up as text in your chat, so you can read it and decide what to do next.
Before you start
What you need
- A Jevx API key (a kind of password for apps; you create one for free on the Jevx settings page)
- An MCP client like Claude Desktop, Claude Code, Cursor or Cline
- Node.js installed on your computer so the npx command can run
Good to know
Each decision uses your Jevx credits, so check your question shape first if you want to avoid wasting them on a malformed request.
Install it with your AI
Add Jevx MCP server to your AI, no technical skills needed
You don't install anything by hand. You copy one prompt, paste it into an AI that can work on your computer, and it checks, installs and connects the server for you, asking you when it needs something.
Sign in to get the install prompt
Members get a ready-made prompt that lets the Claude desktop app check Jevx MCP server, install it and connect it for them, step by step. You don't need any technical skills: you copy, paste and answer a few questions. Your connected AI can also find and install any of the 4,066 MCP servers here for you.
Who it's for
People who make a lot of small judgment calls at work, like picking between options, triaging requests, or scoring things on a scale, and who want a quick second opinion with a confidence number.
