> For the complete documentation index, see [llms.txt](https://docs.n8n.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.n8n.io/build/work-with-data/transform-data/expression-reference/execdata.md).

# Execdata

## `$exec`.**`customData`** <a href="#dollarexeccustomdata" id="dollarexeccustomdata"></a>

**Description:** Set and get custom execution data (e.g. to filter executions by). You can also do this with the ‘Execution Data’ node. [More info](/build/understand-workflows/understand-executions/customize-executions-data.md)

**Syntax:** `$exec`.`$exec`.**`customData`**

**Returns:** CustomData

**Source:** Custom n8n functionality

## `$exec`.**`id`** <a href="#dollarexecid" id="dollarexecid"></a>

**Description:** The ID of the current workflow execution

**Syntax:** `$exec`.`$exec`.**`id`**

**Returns:** String

**Source:** Custom n8n functionality

## `$exec`.**`mode`** <a href="#dollarexecmode" id="dollarexecmode"></a>

**Description:** Can be one of 3 values: either `test` (meaning the execution was triggered by clicking a button in n8n) or `production` (meaning the execution was triggered automatically). When running workflow tests, `evaluation` is used.

**Syntax:** `$exec`.`$exec`.**`mode`**

**Returns:** String

**Source:** Custom n8n functionality

## `$exec`.**`resumeFormUrl`** <a href="#dollarexecresumeformurl" id="dollarexecresumeformurl"></a>

**Description:** The URL to access a form generated by the [’Wait’ node](/integrations/builtin/core-nodes/n8n-nodes-base.wait.md).

**Syntax:** `$exec`.`$exec`.**`resumeFormUrl`**

**Returns:** String

**Source:** Custom n8n functionality

## `$exec`.**`resumeUrl`** <a href="#dollarexecresumeurl" id="dollarexecresumeurl"></a>

**Description:** The webhook URL to call to resume a workflow waiting at a [’Wait’ node](/integrations/builtin/core-nodes/n8n-nodes-base.wait.md).

**Syntax:** `$exec`.`$exec`.**`resumeUrl`**

**Returns:** String

**Source:** Custom n8n functionality