# YouTube channel diagnosis kit for Claude Code

From my video "How You Can Grow Your YouTube Channel with Claude".

## Before you start

- [ ] YouTube API key from Google Cloud (https://console.cloud.google.com)
- [ ] YouTube OAuth access to your channel
- [ ] Claude Code (Codex also works: ask for subagents instead of a workflow)

## Prompt 1: test the connection

```
Hey, can you check my YouTube channel using the keys and tell me what are the three last videos that I had?
```

Check the answer. Unlisted and private videos are included, so plan to exclude them.

## Prompt 2: build the analysis and 3D dashboard

I run the main session with Fable 5 on high effort and ask for Opus 4.8 subagents.

```
Hey Claude, I want you to get all of the public videos from my YouTube channel. Then use a workflow to analyze all of the videos, their data from the moment they were released, detect which ones had a very good conversion rate, which ones had a very good amount of impressions, and categorize the videos in a 3D graph, showing me the ones that were bad because there were not enough impressions, the ones where people did click on the video, and the videos where people stayed. Then give me insights per video on what I should do with that topic. Please use a dynamic workflow and use Opus 4.8 agents. And remember, this should be done in 3D.
```

Why a dynamic workflow: each video gets its own dedicated subagent, which improves the quality of the analysis when you have lots of data.

## The three metrics

| Question | Metric | If it is weak |
|---|---|---|
| Do people see my content? | Impressions | Change the topic. AI cannot do much here; it depends on what is trending. |
| Do people click on my content? | Click-through rate (CTR) | Work on the packaging: thumbnail plus title. |
| Do people stay to watch? | Retention | Work on the first thirty seconds, where people drop out. |

## The five dashboard categories

| Category | What it means | What to do |
|---|---|---|
| Winners | Good impressions, clicks and retention | Reproduce the topic (look at the cluster up and to the right of the graph). |
| Clicked, then left | Low retention | Rework the opening of the video. |
| Stayed but few clicked | Low CTR or low impressions | Redo with a different hook, title or thumbnail. |
| Seen, no click, no hold | Shown, but nobody clicked or stayed | Rethink topic and packaging. |
| Invisible | Almost no impressions | Change the topic. |

## After the analysis

- [ ] List the winners worth repeating now.
- [ ] List the videos with good impressions but low CTR, and plan new packaging for each.
- [ ] Skim the written insights to confirm they are relevant; decide from the visual.
- [ ] Try the same method on Instagram, TikTok or LinkedIn.