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.
npx skills add FlorianBruniaux/claude-code-plugins --skill explaingit clone --depth 1 https://github.com/FlorianBruniaux/claude-code-pluginsWrote 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.
[](https://agentmods.dev/skills/florianbruniaux/claude-code-plugins/explain)<a href="https://agentmods.dev/skills/florianbruniaux/claude-code-plugins/explain"><img src="https://agentmods.dev/badge/skills/florianbruniaux/claude-code-plugins/explain/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/florianbruniaux/claude-code-plugins/explain"><img src="https://agentmods.dev/badge/skills/florianbruniaux/claude-code-plugins/explain.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00015 | $0.00966 |
| Opus 5.5 | $0.00006 | $0.00386 |
| Sonnet 5.5 | $0.00003 | $0.00193 |
| Haiku 4.5 | $0.00002 | $0.00097 |
Grade A, and why
explain scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 175 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Code Explainer
Explain code, concepts, or system behavior with adjustable depth levels.
Purpose
Get clear explanations of:
- How specific code works
- Why certain patterns are used
- What a system/module does
- Architectural decisions and trade-offs
Instructions
Step 1: Determine Scope
Identify what needs explanation:
- File: Entire file structure and purpose
- Function/Method: Specific implementation details
- Concept: Architectural pattern or design decision
- Flow: How data/control moves through the system
Step 2: Assess Complexity
Simple (1-2 min read) → Quick summary, key points only
Standard (3-5 min read) → Purpose, how it works, key decisions
Deep (10+ min read) → Full breakdown, alternatives, trade-offs
Step 3: Gather Context
# For file explanations
head -50 "$FILE" # See imports and structure
# For function explanations
grep -A 30 "function $NAME\|def $NAME\|fn $NAME" "$FILE"
# For module explanations
ls -la "$DIR"
cat "$DIR/index.ts" 2>/dev/null || cat "$DIR/__init__.py" 2>/dev/null
Step 4: Structure the Explanation
Output Format
📖 Explanation: [Target]
Scope: [file/function/concept/flow] Depth: [simple/standard/deep]
What It Does
[1-3 sentences describing the purpose]
How It Works
[Step-by-step breakdown appropriate to depth level]
Key Decisions
| Decision | Why | Alternative |
|---|---|---|
| [choice made] | [reasoning] | [what else could work] |
Example Usage
// How to use this correctly
Related Code
path/to/related.ts- [relationship]path/to/dependency.ts- [relationship]
💡 Learning Notes (if --learn flag)
[Additional context for understanding the broader pattern]
Depth Levels
Simple (/explain --simple)
**validateUser()** checks if the user object has required fields
(email, password) and returns a boolean. Uses regex for email format.
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.
- 1mo ago First seen · 175 lines · 15 tokens per session scan A c30dc3ef940b
explain is a skill published in the GitHub repository FlorianBruniaux/claude-code-plugins (43 stars, last pushed 1mo ago), licensed MIT. It adds 15 tokens to every session and 966 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-09-04.
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