In short:
ak-youtubepulls a video's data through the VidCap API (info, captions, comments, AI summary), then rewrites it into a blog post, an infographic or social posts. Every quote is tied to a timestamp in the video. If it cannot get the captions, it says they are missing instead of making up content.
Disclosure: I maintain AgentKit and have an affiliate relationship with it: the AgentKit link in this post is an affiliate link; buying through it gets you 30% off.
Summary
Use it when you have a YouTube link and want to reuse its content, or just need the captions and comments to read yourself. The machine needs a VidCap API key in the VIDCAP_API_KEY environment variable.
flowchart LR
A["YouTube video link"] --> B["ak-youtube"]
B --> C["Data only: info, captions, comments"]
B --> D["blog: SEO-ready Markdown post"]
B --> E["infographic: HTML, PNG, JSON"]
B --> F["social: posts per platform"]
D --> G["Quality score, final version"]
E --> G
F --> GFour concepts to know:
| Concept | Question | Example |
|---|---|---|
| Subcommand | What do you want this video to become? | blog produces an SEO-ready Markdown post, infographic an HTML page with a PNG image, social posts for each platform |
| Extraction or conversion | Do you need the video's raw data, or a rewritten product? | "Get the captions and top comments" is extraction; blog <link> is conversion |
| Timestamped evidence | Which part of the video does this sentence come from? | A quote carries the timestamp 12:30, auto-generated captions are flagged, added ideas are kept apart from the speaker's words |
| Transcript reuse | Do the captions have to be fetched again? | Same video ID, same language, same version means reuse; if any of the three differs, it fetches fresh |
The syntax is the subcommand, then the video link: /ak-youtube blog <link>. Without a subcommand, you describe in words what to fetch.
Sample prompt for turning a video into a blog post:
/ak-youtube blog https://youtube.com/watch?v=<id>
The video is about <topic>, in English.
Tone: casual. Readers: <your blog's readers>.
Every quote must be tied to a timestamp in the video.This skill has no flags.
Below is the detailed version: the run flow, 5 situations with prompts, the change history by ak release, and common pitfalls. The detailed version and the interactive page are for subscribers. Your agent can also search them through the portal's MCP.
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Use this piece in your agent
Get an API keyCopy the text below and paste it into Claude Code, Codex or whichever agent you use. The agent reads the piece and checks it against the repo you have open.
Read "ak-youtube: turn YouTube videos into blog posts, infographics and social posts" on modernEngineer and apply it to this repo.
1. Call the content_get tool of the modernengineer MCP server with locale "en", slug "ak-youtube". If the modernengineer MCP server is not connected, stop and walk me through connecting it from https://modernengineer.dev/en/mcp.
2. Summarize the main steps of the piece and point out which apply to this repo.
3. Propose concrete changes and ask me before editing any file.Connect MCP in Claude Code (once)
claude mcp add --transport http modernengineer \
https://api.modernengineer.dev/mcp \
--header "Authorization: Bearer <API key>"Reading the full piece over MCP needs an API key from a subscriber account or one that bought this guide. Without access, the agent only gets the opening.
- Version
- v1.0.0
- Updated
- 22/10/2026
- Licence
- All rights reserved
- Slug
- ak-youtube
