YouTube video downloader Agent Skill
Give your AI agent an online YouTube video downloader through one prompt — it connects the official AgentBody skill and calls the real API automatically.
- A Real MP4 File, Not A Redirect
- Quality Selection
- Every Public Link Shape
- Agent-Native Skill Install
Install Skill
Read https://docs.agentbody.io/quickstart.md and help me safely connect, configure, and use AgentBody's APIs with the official AgentBody Skill in this agent environment.
Features
This YouTube video downloader saves a public video as a real MP4 file your agent can keep: a permanent download link plus metadata, not a temporary redirect.
A Real MP4 File, Not A Redirect
The downloader saves the actual file and returns a permanent URL the agent can fetch from any machine — plus the title, duration, thumbnail, and file size alongside it.
Quality Selection
The agent requests the resolution the job needs, and the API serves what the source makes available without re-encoding. Higher quality means larger files — the agent can compare before committing.
Every Public Link Shape
Watch URLs, youtu.be links, Shorts, and embeds all resolve. Private and restricted videos fail with a structured error the agent can report instead of retrying blindly.
Agent-Native Skill Install
One prompt installs the official AgentBody skill into your agent. The agent reads the quickstart, asks for your API key, and configures itself — no key embedded in the prompt.
How to use
Three steps give your agent a working YouTube video downloader.
Send The Install Prompt
Paste the install prompt from this page into your AI agent. It fetches the official AgentBody skill — no plugin store, no manual wiring, no key in the prompt.
Let The Agent Configure Your Key
The agent reads the quickstart, asks you for an AgentBody API key, and stores it in its own configuration. You create the key in a free AgentBody account.
Ask For Videos In Plain Language
Say "download this YouTube video as MP4" with a link, and the agent calls the API, waits for the save, and returns the permanent download link with title and file size.
Frequently asked questions
How does the agent install the YouTube video downloader?
Paste the install prompt from this page into your agent. It downloads the official AgentBody skill, reads the bundled quickstart, and asks for an API key from your free AgentBody account. After that, download requests route to the real API.
Is my API key safe inside the agent?
The key is never embedded in the install prompt or sent anywhere except the AgentBody API. The agent stores it in its local configuration like any other credential, over HTTPS.
What can the agent download once installed?
Any public YouTube video in any common link shape — watch pages, youtu.be, Shorts, embeds. The agent returns a permanent MP4 download link plus title, duration, thumbnail, and file size.
Can the agent batch multiple videos?
The API downloads one video per call, so the agent processes lists as a loop of individual downloads, each with its own idempotency key.
What does the agent hand back?
A permanent download URL for the saved MP4 plus video metadata. Because the link never expires, the agent can also save the file to disk or upload it to your storage directly.
What usage rules apply?
Each successful download draws a fixed amount from your AgentBody balance; failures are not billed. Download only content you own, have permission to save, or have another lawful basis for — the API cannot access private or restricted videos.