Extend Variables

What it does

When your agent uses it

• Tasks that involve Design tokens

Example prompts

• “/extend-variables”

Workflow steps

6 steps, taken from the first numbered list in SKILL.md.

1. 1PHP variable type — typically extends String_Prop_Type (or other Transformable_Prop_Type) with stable get_key()
2. 2Style schema union (required for style binding) — filter elementor/atomic-widgets/styles/schema so target style keys accept the new…
3. 3PHP render transformer — elementor/atomic-widgets/styles/transformers/register if frontend must resolve stored id → var(--label). Reuse…
4. 4JS editor type (required for "Add Variable" UI) — registerVariableType with key, icon, propTypeUtil, fallbackPropTypeUtil, variableType…
5. 5Storage adapter — extend Adapters\Prop_Type_Adapter if value encoding is non-standard.
6. 6Verify on active kit — REST elementor/v1/variables/* and MCP elementor/manage-global-variable confirm types already registered; they do…

What it can do on your machine

Read from SKILL.md and the folder at commit dd32c13. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  No scripts in the folder and no shell commands in SKILL.md (its code samples are php).

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Extend Variables loads about 1.6k tokens when it runs. Until then it costs about 45 tokens; SKILL.md has 445 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~45

When it runs · the whole SKILL.md, loaded when a task matches

~1.6k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from elementor/elementor at commit dd32c13, republished under its GPL-3.0 licence (© elementor). 445 words, ~1,559 tokens.

name

extend-variables

description

External: Register global design-token variable types from a third-party plugin. elementor/variables/register, registerVariableType JS, style schema, transformers.

class Shadow_Variable_Prop_Type extends String_Prop_Type {
    public static function get_key(): string {
        return 'global-shadow-variable';
    }
}

add_action( 'elementor/variables/register', function (
    \Elementor\Modules\Variables\Classes\Variable_Types_Registry $registry
) {
    $registry->register( Shadow_Variable_Prop_Type::get_key(), Shadow_Variable_Prop_Type::make() );
} );

add_filter( 'elementor/atomic-widgets/styles/schema', function ( array $schema ) {
    if ( isset( $schema['box-shadow'] ) ) {
        $schema['box-shadow'] = Union_Prop_Type::create_from( $schema['box-shadow'] )
            ->add_prop_type( Shadow_Variable_Prop_Type::make() );
    }
    return $schema;
} );

© elementor, GPL-3.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .cursor/skills/extend-variables of elementor/elementor.

Open the folder on GitHubat commit dd32c13