# Flow

The **Flow** action sends data to Shopify Flow, arriving as one of four possible Flow triggers.

{% hint style="info" %}
This page is about the Mechanic action that sends data to Shopify Flow. For a review of Mechanic's entire integration with Flow, see [Shopify Flow](/platform/integrations/shopify-flow.md).
{% endhint %}

## Options

### Resource options

The Flow action accepts at most one resource option, identifying a specific Shopify resource, and resulting in a resource-specific Flow trigger. If no resource option is provided, Mechanic will use the General trigger.

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These resource options only accept fully-numeric resource IDs (i.e. 12345). They do not accept global IDs (i.e. gid://shopify/Customer/12345).
{% endhint %}

| Resource option                    | Flow trigger                  |
| ---------------------------------- | ----------------------------- |
| `customer_id`                      | "Mechanic sent customer data" |
| `product_id`                       | "Mechanic sent product data"  |
| `order_id`                         | "Mechanic sent order data"    |
| (when no resource option is given) | "Mechanic sent general data"  |

### Data options

This action also sends user-defined data, with one option available for each of Flow's supported datatypes. These options are *always* sent to Flow, even if they're omitted from the action definition; when omitted, their values are set to the documented default.

<table><thead><tr><th width="198.0845070422535">Option</th><th width="150">Type</th><th>Default</th></tr></thead><tbody><tr><td><code>user_boolean</code></td><td>Boolean</td><td><code>false</code></td></tr><tr><td><code>user_email</code></td><td>Email address</td><td><code>"hey@mechanic.invalid"</code></td></tr><tr><td><code>user_number</code></td><td>Number</td><td><code>0</code></td></tr><tr><td><code>user_string</code></td><td>String</td><td><code>""</code></td></tr><tr><td><code>user_url</code></td><td>URL</td><td><code>"https://mechanic.invalid/"</code></td></tr></tbody></table>

## Usage

For a detailed review of usage, see [Shopify Flow](/platform/integrations/shopify-flow.md#mechanic-flow).


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