map-class-usage

A codebase command that maps a class's public methods, fields, constructors, and inherited members, then lists where each is used.

In plain words
What is it for?
Use it before refactoring a class, removing code, or making a change that could break callers. It reports usage locations, counts, coupling, and other findings in JSON.
Why use it?
It removes the need to search through the project manually when assessing how a class is connected to the rest of the code. It also highlights unused members and possible effects of changing the class.

Command

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 commands/rubencodeforges/codeforges-claude-plugin/map-class-usage
Clone the repo
git clone --depth 1 https://github.com/rubenCodeforges/codeforges-claude-plugin
Per session 20 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 337 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00020 $0.00337
Opus 5 $0.00010 $0.00169
Sonnet 5 $0.00004 $0.00067
Haiku 4.5 $0.00002 $0.00034

Measured 2d ago against content hash d00a0233bb99, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

map-class-usage scanned grade A with 0 findings 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

commands/map-class-usage.md · 41 lines

What it actually says

Invoke the @usage-finder sub-agent to build a comprehensive usage map for the specified class.

The usage map should include:

  1. Class Analysis:

    • Extract all public methods with their signatures
    • Extract all public fields/properties with their types
    • Identify constructors and static members
    • Note any inherited classes or interfaces
  2. Usage Search:

    • Find all usages of each method across the codebase
    • Find all usages of each field/property
    • Categorize usages by type (method calls, field access, inheritance, etc.)
    • Include file paths and line numbers for each usage
  3. Structured Output:

    • Generate JSON format for programmatic consumption
    • Include usage counts and location summaries
    • Provide actionable insights (dead code, high coupling, refactoring opportunities)
  4. Analysis Summary:

    • Most used methods/fields
    • Unused members (dead code candidates)
    • Breaking change impact assessment
    • Refactoring recommendations

Usage: /map-class-usage <ClassName> or /map-class-usage <path/to/ClassFile>

Examples:

  • /map-class-usage UserService
  • /map-class-usage src/services/PaymentProcessor.java
  • /map-class-usage DatabaseManager --exclude-tests

The agent will search for the class, analyze its structure, find all usages, and present results in both JSON (for machines) and Markdown table (for humans) formats.

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 · 41 lines · 20 tokens per session scan A d00a0233bb99

Subscribe to this mod's changes

map-class-usage is a command published in the GitHub repository rubenCodeforges/codeforges-claude-plugin (2 stars, last pushed 9mo ago), licensed MIT. It adds 20 tokens to every session and 337 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.