> ## Documentation Index
> Fetch the complete documentation index at: https://docs.zerotwo.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Using Skills

> How to invoke skills in any ZeroTwo chat using the @ trigger.

## Invoking a Skill

Skills are invoked inline in any chat using the `@` trigger:

<Steps>
  <Step title="Type @ in the prompt bar">
    In any ZeroTwo chat — including project chats — type **@** in the prompt input. A skill picker dropdown appears immediately.
  </Step>

  <Step title="Select or type the skill name">
    Continue typing to filter skills by name, or scroll the picker and click to select. The skill name autocompletes into the prompt.
  </Step>

  <Step title="Add your content or instructions">
    After the skill name, type or paste the content you want the skill to act on. Some skills need content to work (like `@summarize [text]`); others can be invoked with just additional instructions.
  </Step>

  <Step title="Send">
    Press Enter or click Send. The skill processes your input and returns the output directly in the chat.
  </Step>
</Steps>

## Examples

```
@summarize Here is a long article I need condensed: [paste article text]
```

```
@translate This needs to be in French: The quarterly results exceeded expectations.
```

```
@explain-code
def fibonacci(n):
    if n <= 1:
        return n
    return fibonacci(n-1) + fibonacci(n-2)
```

```
@grammar-check Please review this paragraph: [paste text]
```

```
@extract-action-items Here are the meeting notes from today's standup: [paste notes]
```

## Installing Skills

**Official Library skills** must be installed before they appear in the `@` picker:

1. Go to **Settings → Skills → Official Library**
2. Browse or search for skills by name or category
3. Click **Install** next to a skill
4. The skill is immediately available in all your chats via `@skill-name`

**Custom skills** you create are automatically available after saving — no installation needed.

**GitHub-imported skills** are available immediately after import.

## Where Skills Work

Skills work in **any chat**, including:

* Regular chats
* Project chats (alongside project instructions)
* Chats with Custom Agents

The `@` picker shows all your installed and custom skills regardless of where you're chatting.

## Skill Output

Skill output appears directly in the chat as an AI response. The output format depends on how the skill is configured — some return bullet points, some return structured sections, some return plain rewrites.

Each skill can have its own base model and enabled tools. A code review skill might use a coding-optimized model; a research skill might have web search enabled. The skill's configuration determines its capabilities, not the chat's default settings.

<Tip>
  Install a small set of high-value skills upfront — `@summarize`, `@explain-code`, `@translate`, and `@grammar-check` cover a large portion of common use cases and are available in the Official Library.
</Tip>

## Managing Your Skills

View and manage all your skills at **Settings → Skills**:

* **Installed** tab — shows Official Library skills you've installed
* **Custom** tab — shows skills you've created
* **GitHub** tab — shows skills imported from GitHub repos

To uninstall an Official Library skill: Settings → Skills → Installed → click Remove next to the skill.