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lexi

v0.13.3

Makes Claude propose tests first and blocks edits to source files without tests, with a band for gate status and a pane for running subagents.

by @savinofiore4Updated Broad accessGitHub

Installation

  1. Install from your shell (answer y to add the marketplace)

    $ claude plugin install lexi --marketplace savinofiore/lexi

Already in a session? Type this at the Claude Code prompt:

$ /plugin install lexi --marketplace savinofiore/lexi

Pick a scope and the mod is active right away. Needs Claude Code 2.1.287 or later, in a terminal. Full install guide

What does lexi do?

  • /lexi:lexi <task> proposes unit tests, waits for your OK, then drives RED to GREEN
  • Guard blocks writes to a testable source file whose mirror test does not exist, and rewrites of committed test assertions
  • Band above the prompt shows lexi:GREEN/lexi:RED, the last gate run, context and rate-limit bars, tokens and cost
  • /subagents opens a pane listing running subagents with model, status and steps
  • Optional Jev router picks model and effort per session and reviews the diff after the last GREEN

What do you need?

  • Claude Code 2.1.287 or later (terminal)
  • Python 3 as python3
  • ponytail and caveman plugins (installed with lexi)
  • TYPESAFE_API_KEY for the optional Jev features

What can this mod access?

Read from the mod's code with claude plugin validate on Claude Code 2.1.296, synced Oct 12, 2026. This is a capability list, not a security audit. Mods run with your permissions, so install only from authors you trust.

Broad access
  • Makes network requests
  • Intercepts or rewrites tool calls
  • Reads or rewrites your prompts
  • Reads files
  • Reads environment variables or settings
Hooks and engine calls (15 + 15)

hooks

  • agent.spawn
  • agent.spawn{fork=false}
  • command.run{command=subagents}
  • prompt.submit
  • session.compact
  • session.end
  • session.measure
  • session.start
  • session.start{isInteractive=true}
  • tool.call
  • tool.call?
  • turn.complete
  • turn.step
  • ui.render{component=AbovePrompt}
  • ui.render{component=Pane, requestId=?}

calls

  • $.clock.after
  • $.clock.now
  • $.clock.sleep
  • $.command.register
  • $.env.get
  • $.fs.read
  • $.http.fetch
  • $.session.model
  • $.state.get
  • $.state.set
  • $.ui.log
  • $.ui.open
  • $.ui.resolve
  • $.ui.status
  • $.ui.toast

How do you uninstall lexi?

$ claude plugin uninstall lexi

To switch it off without removing it, use claude plugin disable with the same name.

Do you maintain lexi?

Add this badge to your README so users can jump to this page for the install command and access report.

Listed on ccmods.app
[![Listed on ccmods.app](https://ccmods.app/badge.svg)](https://ccmods.app/mods/lexi)

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