> For the complete documentation index, see [llms.txt](https://docs.bitsby.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.bitsby.app/api-documentation/scope.md).

# Scope

## Project Restriction

The “Project” field allows you to restrict the API key's scope to a specific project:

* **Any** — the key has access to all projects in the account
* **Specific project** — the key works only with data from the selected project

When making requests using a key linked to a project, the system automatically filters all data to that project only. Requests for data from other projects will be rejected at the API controller level

## Scope restriction

The scope determines which API methods are available for use by the key. This is a required field with multiple-choice options.

If you attempt to call a method that is not within the key’s scope, the request will be rejected

## Combining restrictions

Project and scope restrictions work together. For example, if a key is restricted to working only with accounts and is linked to a specific project, then:

* Only methods for working with accounts are available
* Data is filtered only by the specified project
* Requests for payments or statistics will be rejected
* Requests for data from other projects will be rejected