askjev

Unofficial MCP server for Jev, Typesafe AI's System One model.

CommunityOnlineAPI key requiredGlobalFreeRead-only

What it can do

  • Ask: Ask Jev, a fast non-generative judgment model, one or more questions about some material you already have. Use it for a quick second opinion, a classification, a rating, or a yes/no check instead

What data it sees

Do you need an account

An API key from the service settings is required

Unofficial MCP server for Jev, Typesafe AI's System One model. Ask free-text questions; Jev routes them to choice, score, or yes/no and answers with calibrated probabilities.

How to connect

How to connect askjev to Claude

The server address to paste into Claude settings:

https://askjev--pzacca.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect askjev to ChatGPT

The server address to paste into ChatGPT settings:

https://askjev--pzacca.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect askjev to Cursor

The server address to paste into Cursor settings:

https://askjev--pzacca.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (1)

Raw names from tools/list. Only developers need these.

askAsk Jev, a fast non-generative judgment model, one or more questions about some material you already have. Use it for a quick second opinion, a classification, a rating, or a yes/no check instead of reasoning it out yourself or spawning a sub-agent. Write each question in plain language. Jev decides whether it is a yes/no question, a scale, or a choice: - Yes/no: "Does this ticket ask for a refund?" You get the probability of yes. - Choice: pass "options" with the named alternatives. "Which team owns this?" with options ["billing", "platform"]. - Scale: pass "options" as ordered levels, lowest first. "How urgent is this?" with options ["can wait", "this week", "today"]. Without options, a built-in rubric is picked for you: - intensity: not at all < slightly < moderately < very < extremely - quality: poor < below average < acceptable < good < excellent - severity: trivial < minor < moderate < major < critical - likelihood: very unlikely < unlikely < uncertain < likely < very likely - sentiment: very negative < negative < neutral < positive < very positive - frequency: never < rarely < sometimes < often < always - agreement: strongly disagree < disagree < neutral < agree < strongly agree Every answer carries probabilities and Jev's confidence, plus "routing" showing how the question was interpreted and how sure Jev was about that. Read the confidence: a low value means the material does not settle the question, so add context or decide another way. Requires a Typesafe API key. Send your Typesafe API key in the x-api-key header, or as a bearer token in Authorization.