eli5

eli5 is a skill for Claude Code, Codex from dzhng/duet-agent. It costs 29 tokens per session (687 once invoked), scanned A, a copy of eli5, Apache-2.0.

A plain-language explanation guide for technical specifications and proposed code changes. It builds an accurate mental model and explains schema changes, meaning changes to the structure of stored data.

In plain words
What is it for?
Use it to explain a specification or change to technical readers who did not work on it. It can describe a complete scenario, define unfamiliar terms, and use pseudocode where timing or control flow matters.
Why use it?
It helps readers understand a change without already knowing the code or its internal labels. It makes event order, decisions, and consequences concrete.

Skill for Claude CodeCodex

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 skills/dzhng/duet-agent/eli5
Any agent
npx skills add dzhng/duet-agent --skill eli5
Clone the repo
git clone --depth 1 https://github.com/dzhng/duet-agent

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/dzhng/duet-agent/eli5.svg)](https://agentmods.dev/skills/dzhng/duet-agent/eli5)
Your own site
<a href="https://agentmods.dev/skills/dzhng/duet-agent/eli5"><img src="https://agentmods.dev/badge/skills/dzhng/duet-agent/eli5.svg" alt="Measured on agentmods" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 687 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00029 $0.00687
Opus 5 $0.00015 $0.00344
Sonnet 5 $0.00006 $0.00137
Haiku 4.5 $0.00003 $0.00069

Measured 4d ago against content hash 268c996bcc62, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 4d 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.

Origin

This is a copy

100% identical to eli5 — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.agents/skills/eli5/SKILL.md · 73 lines

How it starts

The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ELI5

Turn the referenced spec or change into an accurate mental model for a technical reader who does not live in the code. Plain language, full precision: simplify the telling, never the claims.

The Register

Other skills point here when their output must be readable by someone who didn't live the work. The reader is technical — pseudocode and precise claims land fine — but they have read none of the code and none of the session's messages: no diff, no transcript, no labels the work invented along the way. Writing ELI5 means:

  • Walk one concrete scenario end to end — the triggering event, what happens today, what the change (or the unbuilt alternative) would do — instead of describing properties in the abstract.
  • Define every term of art at first use; never lean on labels the spec, code, or session invented.
  • Use small concrete examples without replacing precise claims with analogies.
  • Reach for pseudocode when explaining control flow, ordering, or timing. Prose describing when-something-fires reads as plausible and hides the gap; five lines of pseudocode make the gate visible and let the reader see the case you missed. Write it at the level of the decision, not the implementation — the conditions and their order, not real function signatures. The tell that you needed it: your prose contains "only when", "before", "unless", or "as soon as" and the reader still cannot say what happens on the second call.
  • The test: the text stands alone, without the diff, the spec, or the transcript. If the reader must ask "explain this part", it failed.

Workflow

  1. Read the complete referenced artifact and inspect current owners when the spec alone cannot establish behavior. When no artifact is named, explain the session's current change (working tree or branch diff). Separate what exists today from what is only proposed.
  2. Explain the problem through its user or operational consequence, including why the current design produces it.
  3. Explain the solution as one simple before/after data flow. Introduce each component by responsibility, not by filename or internal symbol.
  4. Inventory schema and durable-contract changes exhaustively: added, changed, removed, reset, and deliberately unchanged. Include cursor or wire-format cutovers when they affect stored data or readers. Say explicitly when there are no schema changes.

Read the full file on GitHub · 73 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. 4d ago First seen · 73 lines · 29 tokens per session scan A 268c996bcc62

Subscribe to this mod's changes

eli5 is a skill published in the GitHub repository dzhng/duet-agent (42 stars, last pushed 2d ago), licensed Apache-2.0. It adds 29 tokens to every session and 687 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to eli5, differing in 0 lines, and is treated as a copy.

Related

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