use-jev MCP Server

MCP server and CLI that expose TypeSafe's System One API (model: Jev) to any MCP-capable agent — with escalation, an action gate, and four interchangeable backends.

Local serverMIT

What is the use-jev MCP Server?

use-jev is an MCP project maintained in the silkyland/use-jev repository. The maintainer describes its purpose as “MCP server and CLI that expose TypeSafe's System One API (model: Jev) to any MCP-capable agent — with escalation, an action gate, and four interchangeable…”. Read the project documentation for the complete scope.

Source

Project documentation · Repository · Discovery listing. This profile records the public documentation checked on 2026-10-08.

Recorded tools

Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.

Tool	What it does
jev_ask	Primary. One state, many typed questions, one call. A verdict per question.
jev_noul	One yes/no question → probability of yes (0–1).
jev_choice	Pick one option from a set → pick + per-option probabilities + confidence.
jev_score	Rate on ordered levels → weighted score + legend + probabilities + confidence.
jev_gate	Risk-check ONE proposed action → allow / deny / ask.
jev_route	Local and free: is this step Jev's at all, or structurally the LLM's?
jev_models	List the models the active backend accepts.
jev_status	Active backend, credential source, every provider's state. Never returns a key.
jev_howto	Design and routing guidance for agents without the skill installed.