JevX

mcp
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SUMMARY

When and Where Actually to use Jev in your code base.

README.md

JevX

JevX

Find where Jev fits in your codebase — and change it.

Your code is full of hardcoded rules that are really judgment calls: regexes that guess what an
error means, keyword lists that guess what a customer wants, slice(0, 3) that guesses what's
best. JevX finds them, scores each one three ways (your AI, TypeSafe/Jev, patterns learned from
real Jev projects) and replaces the strong fits with a Jev decision (TypeSafe noul · choice
· score) — keeping the old rule as the fallback, and proving it with your own tests.

npm i -g @vij-sameerb5/jevx
cd your-project
jevx --dry-run      # preview: scorecards + red/green diffs, nothing written
jevx                # change strong fits (70%+), run your tests, auto-revert what breaks
jevx undo           # put everything back

Or from the AI you already use — Claude Code, Claude Desktop, Cursor, Windsurf, VS Code,
Gemini CLI, Codex:

jevx mcp install    # then say: "use jevx to find where Jev fits in this repo"

Claude Desktop users can also double-click jevx.mcpb (from the releases) and pick their project folder.

Why you can trust it

  • Your key, your AI. JevX never ships a key; the terminal version uses your xAI / OpenRouter key.
  • Safety lives in the tool: only strong fits change by default, the old rule stays as the
    fallback, files you're editing are skipped, your tests run before and after, jevx undo restores.
  • Private by default. Code goes only to your own AI. --share (opt-in) sends generic patterns
    — never code, file or function names — so JevX learns which changes hold up.

Full docs: apps/jevx/README.md · website: site/ ·
changelog: apps/jevx/CHANGELOG.md

Working on JevX

git clone https://github.com/vij-sameerb5/JevX.git && cd JevX
pnpm install
pnpm test              # ~240 tests, no network, no keys
pnpm dev               # the CLI from source (shows the welcome)
pnpm jevx --help       # every command
pnpm mcp-smoke examples/jev-demo   # the MCP server, end to end
Folder What
apps/jevx the jevx CLI + MCP server (published to npm)
packages/engine read → assess → scorecard → edit → apply → share
packages/gemini AI transports (xAI, OpenRouter)
packages/analyzer, scanner, core local indexing, static candidates, secret scrubbing
tests/, examples/jev-demo tests with mock AI + mock TypeSafe, and the demo repo they run on
supabase/ the opt-in anonymous-outcomes dataset (insert-only)
site/ landing page, docs, contributing
packages/boundary, apps/cli (pnpm lab) frozen research — not part of the product

See CONTRIBUTING.md. MIT © Sameer Shaik.

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