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techdebt

Review a code diff / branch / PR for technical debt — code duplication, unnecessary complexity / over-engineering, and redundant or dead code. Use whenever the user wants a tech-debt, cleanup, or refactor review, asks to check a branch or PR for duplication / complexity / dead code before opening a PR, or mentions "techdebt". Refactor-only: it reports issues and offers behavior-preserving fixes; it never changes behavior.

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Repository
DataDog/dd-trace-java
Last source activity
July 22, 2026 at 11:26
Detected SKILL.md language
English
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736
Forks
363

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name
techdebt
description
Review a code diff / branch / PR for technical debt — code duplication, unnecessary complexity / over-engineering, and redundant or dead code. Use whenever the user wants a tech-debt, cleanup, or refactor review, asks to check a branch or PR for duplication / complexity / dead code before opening a PR, or mentions "techdebt". Refactor-only: it reports issues and offers behavior-preserving fixes; it never changes behavior.
user-invocable
true
context
fork
allowed-tools
["Bash","Read","Grep","Glob"]
# Techdebt Cleanup Skill Analyze changes on the current branch to identify and fix technical debt, code duplication, and unnecessary complexity. ## Instructions ### Step 1: Get Branch Changes Find the merge-base (where this branch diverged from master) and compare against it: ```bash # Find upstream (DataDog org repo) UPSTREAM=$(git remote -v | grep -E 'DataDog/[^/]+(.git)?\s' | head -1 | awk '{print $1}') if [ -z "$UPSTREAM" ]; then echo "No DataDog upstream found, using origin" UPSTREAM="origin" fi # Find the merge-base (commit where this branch diverged from master) MERGE_BASE=$(git merge-base HEAD ${UPSTREAM}/master) echo "Comparing changes introduced on this branch since diverging from master using base commit: $MERGE_BASE" git diff $MERGE_BASE --stat git diff $MERGE_BASE --name-status ``` If no changes exist, inform the user and stop. If changes exist, read the diff and the full content of modified source files (not test files) to understand context. ### Step 2: Analyze for Issues Look for: **Code Duplication** - Similar code blocks that should be extracted into shared functions - Copy-pasted logic with minor variations **Unnecessary Complexity** - Over-engineered solutions (abstractions used only once) - Excessive indirection or layers - Backward compatibility shims that aren't needed **Redundant Code** - Dead code paths - Overly defensive checks for impossible scenarios ### Step 3: Report and Fix Present a concise summary of issues found with file:line references. Then ask the user if they want you to fix the issues. When fixing: - Make one logical change at a time - Do NOT change behavior, only refactor - Skip trivial or stylistic issues
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