code-architecture-explainer

code-architecture-explainer is a skill for Claude Code, Codex from ErikaAX08/erikas-skills. It costs 82 tokens per session (9,536 once invoked), scanned A, original, MIT.

A guide for explaining a codebase from individual implementation details up through modules, integrations, and overall architecture. It requires reading the actual code and can use flow diagrams when they clarify how parts connect.

In plain words
What is it for?
Use it to study a new codebase, explain system behavior, document architecture, or examine technical design decisions.
Why use it?
It helps developers understand unfamiliar code without relying on guesses or isolated file descriptions. Explanations can connect small code decisions to the system's larger design.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to study a new codebase, explain system behavior, document architecture, or examine technical design decisions.

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Install with agentmods
npx agentmods add skills/erikaax08/erikas-skills/code-architecture-explainer
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.

Any agent
npx skills add ErikaAX08/erikas-skills --skill code-architecture-explainer
Clone the repo
git clone --depth 1 https://github.com/ErikaAX08/erikas-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for code-architecture-explainer

README.md
[![agentmods](https://agentmods.dev/badge/skills/erikaax08/erikas-skills/code-architecture-explainer.svg)](https://agentmods.dev/skills/erikaax08/erikas-skills/code-architecture-explainer)
Your own site
<a href="https://agentmods.dev/skills/erikaax08/erikas-skills/code-architecture-explainer"><img src="https://agentmods.dev/badge/skills/erikaax08/erikas-skills/code-architecture-explainer.svg" alt="Measured on agentmods" height="20"></a>
Per session 82 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 9,536 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00082 $0.09536
Opus 5 $0.00041 $0.04768
Sonnet 5 $0.00016 $0.01907
Haiku 4.5 $0.00008 $0.00954

Measured 8d ago against content hash 1321042e7224, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

code-architecture-explainer 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 8d 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.

code-architecture-explainer/SKILL.md · 1,556 lines

How it starts

The opening of the file, as written. The whole thing — 1,556 lines — stays where its author put it; the contents beside it link to each section on GitHub.

This skill guides comprehensive code and architecture analysis at multiple levels of abstraction, from low-level implementation details to high-level system design.

The user wants to understand code, architecture, design patterns, or system behavior. They may ask about specific files, entire modules, integration patterns, or architectural decisions. They may need technical details, conceptual understanding, or both.

Core Principle

UNDERSTAND BY LAYERS, VERIFY BY READING

  • Never explain code you haven't read
  • Start from actual implementation, not assumptions
  • Connect low-level details to high-level goals
  • Use examples from the actual codebase
  • Draw diagrams when they clarify structure

Multi-Level Analysis Framework

Analyze code at these levels as appropriate for the question:

Level 1: Implementation (Line-Level)

What does this specific code do? How does it work?

Level 2: Component (File/Module-Level)

What is this module's responsibility? What are its boundaries?

Level 3: Integration (Cross-Module)

How do components work together? What are the contracts?

Level 4: Architecture (System-Level)

What's the overall design? Why these patterns? How does it scale?

Level 5: Conceptual (Business-Level)

What problem does this solve? What are the tradeoffs?

Pre-Analysis Verification

Before explaining ANYTHING:

1. Read the Actual Code

MANDATORY:

  • Read the specific file(s) being asked about
  • Read related files (imports, dependencies)
  • Read tests to understand expected behavior
  • Read documentation/comments if they exist
  • Check git history for context (if relevant)

Never explain based on:

  • File names alone
  • Directory structure assumptions
  • "This probably does X"
  • Training data about similar systems

2. Map Dependencies

For each component, identify:

  • What it imports/requires
  • What imports/requires it
  • External services it calls
  • Database tables it touches
  • Events it emits/listens to

Read the full file on GitHub · 1,556 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 8d ago First seen · 1,556 lines · 82 tokens per session scan A 1321042e7224

Subscribe to this mod's changes

code-architecture-explainer is a skill published in the GitHub repository ErikaAX08/erikas-skills (5 stars, last pushed 8d ago), licensed MIT. It adds 82 tokens to every session and 9,536 once invoked, about $0.0004 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.

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