Jev directory
CommunityJev Agents & MCP
MCP Jev — npmjs.com
Standalone MCP server that exposes Jev's typed decisions to MCP hosts such as Cursor and Claude Code, with an HTTP mode and an importable library. Handles choice, score, and boolean questions across Vercel, OpenRouter, and TypeSafe providers.
- Reading time
- 2 min
- Published by
- Community
- Added
- Nov 2026
This is one of several Jev listings for the same project. The canonical entry is MCP Jev — pedroknigge.
Highlights
- Runs as MCP stdio via bunx -y @livx.cc/mcp-jev --stdio, or in HTTP mode with REST /api/jev/evaluate and MCP /api/mcp.
- Exposes one tool, post_jev_evaluate, taking state, questions[], and an optional provider argument.
- Supports choice, score, and boolean question types, each returning probabilities and an optional confidence value.
- Provider fallback order defaults to vercel, openrouter, typesafe; unconfigured providers are skipped and failures fall through.
- Also importable as a library from @livx.cc/mcp-jev/jev, with new vendors added as one file in src/providers/.
Questions about this entry
Short answers drawn from the linked project or page.
Run bunx -y @livx.cc/mcp-jev --stdio for MCP stdio mode, or run bun run http from a clone to start HTTP mode, which serves REST at /api/jev/evaluate and MCP at /api/mcp on PORT 3854 by default.
At least one provider key is required: AI_GATEWAY_API_KEY for the vercel provider, OPENROUTER_API_KEY for openrouter, or TYPESAFE_API_KEY for the direct typesafe provider. Unconfigured providers are skipped at runtime.
It exposes post_jev_evaluate, which accepts a state, a list of questions, and an optional provider, and returns the provider, model id, answers, and optional usage information.
Three types: choice, which takes an option-to-description map and returns a choice with probabilities; score, which takes two or more string labels and returns a score with probabilities; and boolean, which returns a probability.
The provider argument takes precedence, then the JEV_PROVIDERS environment variable, then the default order vercel, openrouter, typesafe. Failures fall through to the next configured provider.
Yes. The package is importable from @livx.cc/mcp-jev/jev, so you can call the evaluation logic directly in your own code rather than going through the MCP tool interface.
Defaults are typesafe-ai/jev for the vercel provider, typesafe/jev-1.13 for openrouter, and jev-latest for the direct typesafe provider. Each can be overridden with JEV_VERCEL_MODEL, JEV_OPENROUTER_MODEL, or JEV_TYPESAFE_MODEL.
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