What is explainer-video?

A tool for making short animated explainer videos with ManimCE, a Python animation system often used for mathematical and technical visuals. It can add narration when the speech add-on is installed, or produce silent video otherwise.

Use it to plan scenes, write the animation script, create a low-quality test render, combine audio and captions, and check the final video.

It helps turn an explanation into a timed video with animation, narration, captions, and checks that the rendered file can be read.

explainer-video — Plugin for Claude Code by melodic-software

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/melodic-software/claude-code-plugins

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.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/melodic-software/claude-code-plugins/explainer-video/github.svg)](https://agentmods.dev/plugins/melodic-software/claude-code-plugins/explainer-video)

Your own site

<a href="https://agentmods.dev/plugins/melodic-software/claude-code-plugins/explainer-video"><img src="https://agentmods.dev/badge/plugins/melodic-software/claude-code-plugins/explainer-video/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.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/melodic-software/claude-code-plugins/explainer-video"><img src="https://agentmods.dev/badge/plugins/melodic-software/claude-code-plugins/explainer-video.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

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.

Security

Grade A, and why

explainer-video 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 2d 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/explainer-video/.claude-plugin/plugin.json · 20 lines

What it actually says

{
  "name": "explainer-video",
  "version": "0.2.12",
  "description": "Short explainer videos made with ManimCE, narrated when the speech plugin is installed and silent otherwise. The produce skill plans the beats, writes one scene script whose scene changes follow the narration's word timings, renders at low quality first, muxes narration and captions with ffmpeg, and checks every render with ffprobe and a frame read-back. A SessionStart hook installs the hash-locked Python packages; the check skill reports readiness.",
  "author": {
    "name": "Melodic Software",
    "email": "[email protected]"
  },
  "license": "MIT",
  "keywords": [
    "explainer",
    "video",
    "manim",
    "animation",
    "math",
    "typst",
    "skill"
  ]
}

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.

2d ago Changed c8ade799ed11
4d ago Changed 28ead9644d9e
8d ago Changed 9f83f1ce3766
11d ago Changed 5e3667c04538
12d ago First seen · 20 lines scan A afc8065055f6

Subscribe to this mod's changes

explainer-video is a plugin published in the GitHub repository melodic-software/claude-code-plugins (25 stars, last pushed today), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-10-04.

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explainer-video

Getting it into your agent

Wrote this? Show the measurements

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

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