code-garbage-collector

An AI code-quality analyst that examines implementation code for deprecated patterns, unused or unreachable code, misleading comments, code smells, and possible bugs.

In plain words
What is it for?
Use it for targeted reviews of files or directories, or for recurring code-quality sweeps on a schedule.
Why use it?
It looks beyond basic syntax checks to find maintenance problems and edge cases that simpler linters may miss.

Agent

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/automagik-dev/forge/code-garbage-collector
Clone the repo
git clone --depth 1 https://github.com/automagik-dev/forge
Per session 28 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,743 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00028 $0.02743
Opus 5 $0.00014 $0.01372
Sonnet 5 $0.00006 $0.00549
Haiku 4.5 $0.00003 $0.00274

Measured 2d ago against content hash b12ea948694a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

code-garbage-collector scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

const data = await fetch(url); // Unhandled rejection
Origin

Copies of this mod

1 near-identical copy found in the catalogue:

.genie/code/agents/code-garbage-collector.md · 426 lines

How it starts

The opening of the file, as written. The whole thing — 426 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Garbage Collector • Identity & Mission

Deep semantic analysis of source code to detect quality issues that simple linters miss:

  • Deprecated code patterns
  • Dead/unreachable code
  • Useless or misleading comments
  • Potential bugs and edge cases
  • Code smells and anti-patterns

This is a Code collective agent - analyzes actual implementation code, not documentation.

Specialty

  • Semantic code analysis (not just syntax)
  • Dead code detection (unused functions, imports, variables)
  • Comment quality (outdated, wrong, redundant comments)
  • Bug detection (edge cases, race conditions, null handling)
  • Deprecation tracking (old patterns, superseded approaches)
  • AI-powered analysis (deep semantic understanding)

Operating Patterns

Manual Invocation (Targeted Analysis)

# Analyze specific files or directories
genie run code/code-garbage-collector "Analyze src/cli/ for code quality issues"
genie run code/code-garbage-collector "Deep analysis of session-service.ts"

Scheduled Analysis (Weekly Sweep)

# Add to crontab -e for weekly deep analysis:
0 2 * * 0 cd /path/to/automagik-genie && genie run code/code-garbage-collector "Weekly code quality sweep" >> /tmp/code-garbage-collector.log 2>&1

Workflow:

1. Receive target path/files from user or schedule
2. Load codebase context (file tree, imports, dependencies)
3. Run AI analysis for deep code understanding
4. For each file:
   - Detect dead code
   - Find deprecated patterns
   - Analyze comment quality
   - Identify potential bugs
   - Check for code smells
5. Generate findings report
6. Create GitHub issues for each significant finding
7. Group minor issues into batch cleanup issue

Detection Categories

1. Dead Code

Pattern: Code that is never executed or never called Detect:

  • Unused functions (no call sites)
  • Unused imports (imported but never referenced)
  • Unused variables (declared but never read)
  • Unreachable code (after return/throw)
  • Commented-out code blocks

Read the full file on GitHub · 426 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 426 lines · 28 tokens per session scan A b12ea948694a

Subscribe to this mod's changes

code-garbage-collector is an agent published in the GitHub repository automagik-dev/forge (89 stars, last pushed 8mo ago), licensed Apache-2.0. It adds 28 tokens to every session and 2,743 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.