explainer

A workflow for creating a five-scene educational explainer video about a topic. It combines a spoken narration with animated diagrams, visuals, and captions.

In plain words
What is it for?
Use it to turn a topic and source into a script and scene plan. It covers a hook, definition, explanation of the mechanism, importance, and a next step.
Why use it?
It removes the need to structure a lesson and plan matching visuals separately. The fixed sequence helps explain what something is, how it works, and why it matters.

Skill for Claude CodeCodex

Part of the remotion-gorombo plugin — 8 skills, 7 commands shipped together

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/dansasser/claude-code-marketplace/explainer
Any agent
npx skills add dansasser/claude-code-marketplace --skill explainer
Clone the repo
git clone --depth 1 https://github.com/dansasser/claude-code-marketplace

Made for: Claude Code, Codex.

Or install remotion-gorombo, the plugin that ships this one along with the rest of its 8 skills, 7 commands.

Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 380 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00028 $0.00380
Opus 5 $0.00014 $0.00190
Sonnet 5 $0.00006 $0.00076
Haiku 4.5 $0.00003 $0.00038

Measured 3d ago against content hash 2a93806d82d5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

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 3d 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.

plugins/remotion-gorombo/skills/explainer/SKILL.md · 40 lines

What it actually says

Use the Remotion best practices skill (SKILL.md at the plugin root). Follow its scene planning algorithm for all production steps.

Education Explainer

Input

$ARGUMENTS

Questionnaire

If not answered by the input, ask:

  1. What topic? — What are we explaining?
  2. Source? — URL, doc, or should I research it?
  3. Tone? — Default: Fireship (fast, punchy, conversational). Other options: corporate, casual, technical.

Script

Write a 5-scene script. Present it for approval before building. Each scene needs:

  • One-line headline (on screen)
  • Voiceover script (exact narrator words)
  • Visual description (what to animate — diagrams, flowcharts, icons, step-by-step)

Scene Structure

  • Scene 1: Hook — grab attention, state the problem or question
  • Scene 2: What it is — define the concept simply
  • Scene 3: How it works — the mechanism, with animated diagram or flowchart
  • Scene 4: Why it matters — benefits, stats, or comparison
  • Scene 5: CTA — what to do next, link on screen

Visual Approach

  • SVG-based diagrams and icons for primary visuals.
  • If b-roll is used, treat it as a background layer that supports (not replaces) the core diagram-driven explanation.
  • Diagrams draw themselves (stroke-dashoffset animation)
  • Key numbers use count-up animation
  • Each scene has a clear visual metaphor — not walls of text
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. 3d ago First seen · 40 lines · 28 tokens per session scan A 2a93806d82d5

Subscribe to this mod's changes

explainer is a skill published in the GitHub repository dansasser/claude-code-marketplace (9 stars, last pushed 3mo ago), licensed MIT. It adds 28 tokens to every session and 380 once invoked, about $0.0001 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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