eli5

eli5 is a skill for Claude Code, Codex from coldteadotai/pr-lens. It costs 105 tokens per session (2,329 once invoked), scanned A, original, MIT.

A teaching guide for explaining a codebase, feature, command, or pull request to someone who has no background in it. It builds an interactive diagram step by step, with each view adding another part of the explanation.

In plain words
What is it for?
Use it to create a simple, guided walkthrough of code, features, commands, or pull requests for new developers or non-engineers.
Why use it?
It helps beginners understand complex code without facing the entire architecture at once, and gives explanations a consistent structure.

Skill for Claude CodeCodex

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

Good fit Use it to create a simple, guided walkthrough of code, features, commands, or pull requests for new developers or non-engineers.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/coldteadotai/pr-lens/eli5
About the project

PR Lens is a tool that turns a pull request into animated diagrams showing the software components it affects and the data flowing between them. Developers use it through GitHub, a command-line interface, or a coding agent to understand changes before reviewing code. The catalogue entries provide instructions and skills for using PR Lens with coding agents.

coldteadotai/pr-lens · 2,273 stars · on GitHub · prlens.dev

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 coldteadotai/pr-lens --skill eli5
Clone the repo
git clone --depth 1 https://github.com/coldteadotai/pr-lens

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 eli5

README.md
[![agentmods](https://agentmods.dev/badge/skills/coldteadotai/pr-lens/eli5/github.svg)](https://agentmods.dev/skills/coldteadotai/pr-lens/eli5)
Your own site
<a href="https://agentmods.dev/skills/coldteadotai/pr-lens/eli5"><img src="https://agentmods.dev/badge/skills/coldteadotai/pr-lens/eli5/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 eli5

Your own site · 80×15
<a href="https://agentmods.dev/skills/coldteadotai/pr-lens/eli5"><img src="https://agentmods.dev/badge/skills/coldteadotai/pr-lens/eli5.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 105 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,329 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. Third-party audits
  • Socket pass 4 Oct 2026
  • Snyk warn 4 Oct 2026
How audits are shown
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 $0.00105 $0.02329
Opus 5.5 $0.00042 $0.00932
Sonnet 5.5 $0.00021 $0.00466
Haiku 4.5 $0.00011 $0.00233

Measured 23d ago against content hash 489b423e2d57, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

eli5 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 23d 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.

skills/eli5/SKILL.md · 79 lines

How it starts

The opening of the file, as written. The whole thing — 79 lines — stays where its author put it; the contents beside it link to each section on GitHub.

eli5

Explain like I'm someone who knows nothing about this code: one sentence, then one part at a time, until the whole picture is on screen and the reader already knows every part of it.

A reader who knows nothing cannot take in a diagram. They can take in two boxes and an arrow. So the canvas starts with two boxes and grows. The whole picture is the last thing they see, not the first, and by then it holds nothing new.

You write one graph document. Its views are the growing pictures, its walkthrough plays them in order, and PR Lens draws them. The reader opens a link and presses play. There is no page, no list, no paragraph.

What you need

The PR Lens manual and its reference pages. The PR Lens CLI prints both. Run npx @coldtea/pr-lens-cli@latest skill, then npx @coldtea/pr-lens-cli@latest skill references, and read both before your first document. The manual's rules hold here except where this page marks an Override.

Operating manual

  1. Write the answer first. Read the code until you can say what it does for a person, in under 48 characters, because the sentence is also a walkthrough heading and a heading stops at 48. Count them.

    • For a feature or a command: "When you ___, this code ___." Example: "When you hit send, it emails everyone."
    • For a whole codebase: what the product is for. Example: "BestRegards sends newsletters for you." The sentence is about the product, not one path through it. Override, summary. The sentence is also the document summary. The reference wants a paragraph about a change; eli5 wants this sentence.
  2. Cut to the path. For a feature, trace the one path input takes to output. For a whole codebase, first list the 3 to 5 things a person does with the product, then trace the path of the main one: the thing the product is named after or sold on, or the one with the most code on it. The parts on that path are the diagram: 4 to 10 nodes, 2 to 5 lanes. Helpers, config, types and tests stay out. When two entry points converge on the same code, draw the point where they meet and name both in its body; do not drop one.

Read the full file on GitHub · 79 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. 23d ago Changed 489b423e2d57
  2. 1mo ago Changed · +4 lines 4b820d02397b
  3. 1mo ago Changed 867c252551a1
  4. 1mo ago First seen · 75 lines · 105 tokens per session scan A 190f814a70ff

Subscribe to this mod's changes

eli5 is a skill published in the GitHub repository coldteadotai/pr-lens (2,273 stars, last pushed today), licensed MIT. It adds 105 tokens to every session and 2,329 once invoked, about $0.0004 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 2026-09-12.

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