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snek.explain

snek.explain is a command for Claude Code from 4tyone/snek. It costs 6 tokens per session (178 once invoked), scanned A, original, Apache-2.0.

A code explainer for a chosen file location, line range, function, or struct. It describes what the code does, how data moves through it, and possible concerns.

In plain words
What is it for?
Use it to explain specific lines or named functions and structs, including their logic, techniques, and potential issues.
Why use it?
It helps you understand unfamiliar code without reading an entire file or guessing which parts matter.

Command for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

not rated 10repo 10mo ago A scan 6 tokens original Apache-2.0

Good fit Use it to explain specific lines or named functions and structs, including their logic, techniques, and potential issues.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/4tyone/snek/snek.explain
View source ↗ 4tyone/snek
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.

Clone the repo
git clone --depth 1 https://github.com/4tyone/snek

Made for: Claude Code.

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 snek.explain

README.md
[![agentmods](https://agentmods.dev/badge/commands/4tyone/snek/snek.explain/github.svg)](https://agentmods.dev/commands/4tyone/snek/snek.explain)
Your own site
<a href="https://agentmods.dev/commands/4tyone/snek/snek.explain"><img src="https://agentmods.dev/badge/commands/4tyone/snek/snek.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.

agentmods 80×15 button for snek.explain

Your own site · 80×15
<a href="https://agentmods.dev/commands/4tyone/snek/snek.explain"><img src="https://agentmods.dev/badge/commands/4tyone/snek/snek.explain.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 6 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 178 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 $0.00006 $0.00178
Opus 5.5 $0.00002 $0.00071
Sonnet 5.5 $0.00001 $0.00036
Haiku 4.5 $0.00001 $0.00018

Measured 2mo ago against content hash 53e1d074240c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

snek.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 2mo 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.

templates/commands/snek.explain.md · 35 lines

What it actually says

Explain Code

Explain what a piece of code does.

Usage

User provides:

  • File path
  • Line number or line range (e.g., "10-25")
  • Or: function/struct name to find and explain

Steps

  1. If line range provided, read that section:

    • Read the file
    • Extract the specified lines

  2. If function/struct name provided:

    • Use outline script to find it:
    .snek/scripts/get-file-outline.sh "/path/to/file"
    • Read the relevant section

  3. Analyze and explain:

    • What the code does
    • Key logic and data flow
    • Important patterns or techniques used
    • Any potential issues or considerations
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. 2mo ago First seen · 35 lines · 6 tokens per session scan A 53e1d074240c

Subscribe to this mod's changes

snek.explain is a command published in the GitHub repository 4tyone/snek (10 stars, last pushed 10mo ago), licensed Apache-2.0. It adds 6 tokens to every session and 178 once invoked, about $0.0000 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 2026-08-31.

Debuggingaiai-agentsai-coding-assistanttab-completion
Related

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