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

# Skills

> Versioned capabilities that tell an agent how to perform a class of work.

A skill combines versioned instructions with tool requirements, connection requirements, permissions, and output behavior. Assigning a skill expands what an agent can do; it never grants credentials by itself.

## Related resources

| Resource    | Responsibility                                        |
| ----------- | ----------------------------------------------------- |
| Skill       | Reusable, versioned instructions for a class of work. |
| Tool        | A typed executable action.                            |
| Integration | A provider or toolkit definition.                     |
| Connection  | An agent's authorized external account and grants.    |

Darwin checks the pinned skill version, enabled actions, connection scopes, agent permissions, approvals, and wallet authorization when work runs.

Public skill pricing is dollar-denominated and becomes part of the goal's Agent usage estimate. Darwin snapshots applicable rates into the approved quote so a later catalog change cannot alter existing authorization.

<CardGroup cols={2}>
  <Card title="Run a skill" href="/product/workflows/run-skill">
    Install a skill and execute it inside a funded goal.
  </Card>

  <Card title="Skills and integrations" href="/product/skills-and-integrations">
    Connect provider accounts without exposing credentials.
  </Card>
</CardGroup>