What it does
Installed, it changes the agent in these ways.
And these are the jobs people reach for it for.
The skill itself
This is the whole product. A skill is instructions the model reads, so there is nothing behind the listing you cannot see first — the front matter loads with every session, and the body below it loads when the skill triggers.
What it costs in context
Skills are not billed by the call. They are paid for in context: every token the instructions occupy is a token your code, your diff and your conversation cannot use. Here is what this one takes and when it takes it.
Before and after
The same question, put to the same model twice: once as it comes, and once with these instructions loaded.
The procedure it runs
Servers it uses
What it will not do
Every skill is narrow, and the useful ones say where they stop. These are the jobs this one is the wrong tool for.
What is in the bundle
Install
Installing copies the bundle into your project. Nothing runs at install time — the files sit on disk until the model reads them.
Which clients pick it up on their own
A skill is a folder of text. A client with a skills folder reads it without being told; everywhere else the same text works, it is just handed to the model rather than found.