Agent skill

session-hardening

Production hardening for agent sessions. Includes pretool guards (blocks rm -rf, co-author injection, publishing without approval, data exfiltration), continuous QA (runs tests every N file writes), and session context injection (git state, focus brief, handoff artifacts). Activates automatically via hooks.

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Install this agent skill to your Project

npx add-skill https://github.com/0xNyk/lacp/tree/main/plugin/skills/session-hardening

SKILL.md

Session Hardening

This plugin provides three layers of production hardening:

Pretool Guard (PreToolUse)

Blocks dangerous operations before they execute:

  • rm -rf → suggests trash instead
  • Co-author injection in commits
  • npm/cargo/pip publish without approval
  • curl | python/node download-first patterns
  • chmod 777 → suggests specific masks
  • git reset --hard, git clean -f
  • Data exfiltration via curl --data @.env
  • Push to main on public repos

Continuous QA (PostToolUse)

Runs your project's test command at configurable intervals during work:

  • Detects test command from package.json, Makefile, Cargo.toml, pyproject.toml
  • Fires every N file writes (default: 10)
  • Injects failure feedback without blocking
  • Includes thinking prompt on failure (think mode)

Session Context (SessionStart)

Injects at every session start:

  • Git branch, recent commits, modified files
  • Focus brief (current problem, beliefs, decisions)
  • Handoff artifact from previous session
  • System health score
  • Self-Memory System context

Configuration

Env Var Default Purpose
LACP_EVAL_CHECKPOINT_ENABLED 0 Enable continuous QA
LACP_EVAL_CHECKPOINT_INTERVAL 10 Test every N writes
LACP_CONTEXT_MODE `` Active mode (tdd, debugging, sprint, etc.)

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