Jev MCP

Overview & result

The server packages common Jev decisions as MCP tools that an agent can call without writing one-off integration code for each judgment.

From the original post

Fast, cheap, typed judgments from TypeSafe's Jev model, as MCP tools. Give your agent eleven judgment tools.

How Jev fits in the loop

1. Expose Jev-backed judgments as MCP tools.
2. Return typed probabilities/confidence instead of prose.
3. Let the calling agent use those results in its own plan or review loop.
4. Support several Jev providers while preserving the same higher-level tool interface.

How to reproduce

1. Read the repository README and review the tools, package, and requested environment access.
2. Create a TypeSafe API key and expose it to the MCP process through a local environment variable.
3. Run one non-sensitive judgment, inspect the typed result, and set review thresholds before using it in a larger workflow.

npx -y @jkudish/jev-mcp

Install the Jev MCP server from @jkudish/jev-mcp. Register it with this client, check for TYPESAFE_API_KEY without asking me to paste a secret into chat, then offer one harmless claim-verification test. Clearly identify it as a community connector.

Why this build matters

It turns the model into agent infrastructure rather than a standalone destination, matching JevForAgents’ core positioning.

Reported performance

Latency: Project reports roughly 150–500ms for most judgments

Limitations

• This is a community connector, not the official TypeSafe Agent Skill.
• MCP client configuration and environment handling differ by host.
• The reported 150–500 ms range has not been independently tested by JevForAgents.

Patterns