Imported from secondsky/claude-skills (plugins/tech-debt/skills/tech-debt/SKILL.md). Install upstream with npx skills add secondsky/claude-skills --skill tech-debt. Copyright stays with the author (MIT).

Tech Debt

Overview

Two complementary stances on technical debt, picked apart by the router in this file:

• Mode A — Prevent: while you're making a change, rework it toward the intended end state. Delete the dead compatibility path instead of preserving it.
• Mode B — Triage: while you're assessing existing code, categorize, score, and prioritize the debt into a remediation plan.

They run at different points in a debt's lifecycle: prevent when writing, triage when planning. Triage output feeds back into prevent, one item at a time.

When to use

Use Mode A when:

• You are implementing, finishing, or reviewing a feature / fix / refactor and the user wants the change clean.
• You're about to keep a fallback, alias, mode flag, or wrapper "just in case" — check it has a caller first.
• The user says "do this properly", "no bandaids", "zero tech debt", or "don't leave a mess".

Use Mode B when:

• The user asks for a tech-debt audit, code-health review, or "what should we refactor?"
• The user wants to prioritize a maintenance / refactor backlog or roadmap.
• Debt has accumulated and nobody is sure what to fix first.

When NOT to use:

• A single obvious local fix with no structural angle — just fix it; don't invoke a debt framework.
• Style/formatting nits — point them at the linter/formatter, not here.
• Greenfield where the intended end state is genuinely unknown (Mode A can't target what isn't defined yet).

How this skill works — router

This skill is a ROUTER. This file stays a thin orchestrator. It picks exactly one mode (or the chain A→B→A), then you load the matching references/*.md and follow it. The two reference docs hold the actual steps, rules, and examples.

Never inline a reference doc's body. If a branch is more than a 2–3 line summary, it belongs in references/. The decision of which branch to take stays here.

Why: keeping the router thin keeps it scannable, and loading the branch body only when the mode is confirmed saves context on the wrong branch.

Routing

Decision criterion — one boolean property of the task: Is the user actively making a change right now (writing/editing code, has a diff)? yes → Mode A; no → Mode B. The chain rule: once a triaged item is being implemented, switch to Mode A for that change.

digraph tech_debt_route {
  rankdir=TB;
  node [shape=box];

  start  [label="User task touches tech debt" shape=oval];
  q      [label="Actively making a change\n(writing/editing code, has a diff)?" shape=diamond];
  a      [label="MODE A — PREVENT\nRework THIS change to the\nintended end state"];
  b      [label="MODE B — TRIAGE\nCategorize + score the\nwhole codebase's debt"];
  loadA  [label="Load references/prevent-during-change.md"];
  loadB  [label="Load references/triage-backlog.md"];
  chain  [label="Implementing a triaged item?\nSwitch to Mode A for that change" shape=diamond];

  start -> q;
  q -> a [label="yes"];
  q -> b [label="no — assessing existing code"];
  a -> loadA;
  b -> loadB;
  loadB -> chain;
  chain -> loadA [label="yes, per item"];
}

Routing table

Mode A — Prevent (during a change)

Rework the change from the intended end state, not the path that led to the current patch. Optimize for the code that should exist; delete dead compatibility paths rather than improving them. Prefer one clear component/flow over mode flags.

Load references/prevent-during-change.md and follow it.

Mode B — Triage (audit a backlog)

Systematically identify, categorize, and prioritize existing debt across the codebase. Produce a prioritized list with effort estimates and a phased remediation plan that can run alongside feature work.

Load references/triage-backlog.md and follow it.

Bottom line

Prevent new debt while you're changing the code; triage old debt when you're planning what to fix.