Amazon Seller Central Integration (Syncaut)

The Amazon Seller node in Syncaut allows you to automate operations across your Amazon stores using the Selling Partner API (SP-API).

You can:

• Fetch orders

• Retrieve inventory

• Update stock levels

• Create fulfillments (mark orders as shipped)

All of this runs inside your workflows and scales across multiple clients.

What This Node Does

This node connects directly to Amazon’s infrastructure and enables:

• Order management

• Inventory synchronization

• Fulfillment automation

It is designed for agencies managing multiple Amazon seller accounts.

Step 1: Get Amazon Credentials (VERY IMPORTANT)

Amazon uses Login With Amazon (LWA) for authentication.

You need:

{
  "clientId": "",
  "clientSecret": "",
  "refreshToken": "",
  "sellerId": ""
}

1. Create a Developer Profile

1. Go to:
   https://developer.amazon.com/

2. Sign in with your Amazon account

3. Complete:

   • Business info

   • App details

2. Register Your Application

1. Navigate to Apps & Services

2. Click Develop Apps

3. Create a new app

You will get:

• Client ID

• Client Secret

3. Generate Refresh Token

This is the hardest (and most important) step.

Steps:

1. Go to Amazon Seller Central

2. Navigate to:
   Settings → User Permissions → Developer Access

3. Authorize your app using your Client ID

4. Use Amazon’s OAuth flow to generate a refresh token

👉 Official guide:
https://developer-docs.amazon.com/sp-api/docs/authorize-public-applications

4. Get Seller ID

1. Open Seller Central

2. Go to Settings → Account Info

3. Find:

   • Merchant Token / Seller ID

5. Save Credential in Syncaut

Go to:

Credentials → Add Credential → Amazon

Paste:

{
  "clientId": "your_client_id",
  "clientSecret": "your_client_secret",
  "refreshToken": "your_refresh_token",
  "sellerId": "your_seller_id"
}

Step 2: Configure the Node

The Amazon node has 3 steps:

1. Connect

• Step Name (variableName)
  Example: amazonOrders

• Credential
  Your saved Amazon credential

• Marketplace
  Select region (e.g. United States 🇺🇸)

Each marketplace maps to a different Amazon API endpoint internally.

2. Choose Action

Available actions:

ActionDescriptionget_ordersFetch recent orders (last 7 days)get_orderFetch a single orderget_inventoryGet inventory summariesupdate_inventoryUpdate stock for a SKUcreate_fulfillmentMark order as shipped

3. Parameters (Payload)

Some actions require input.

You can:

• Use Form Mode (recommended)

• Or switch to JSON Mode (advanced)

Using Variables

You can dynamically pass data using:

{{variableName}}

Examples:

{{orderId}}
{{sku}}
{{quantity}}
{{trackingNumber}}

Actions Explained

1. Get Orders

Action: get_orders
Payload: None

Fetches all orders from the last 7 days.

Output:

{{amazonOrders.data}}

2. Get Single Order

Action: get_order

Payload:

{
  "orderId": "{{orderId}}"
}

3. Get Inventory

Action: get_inventory
Payload: None

Returns FBA inventory summaries.

4. Update Inventory

Action: update_inventory

Required fields:

• sku

• quantity

Optional:

• fulfillmentLatency (default = 1 day)

Payload:

{
  "sku": "{{sku}}",
  "quantity": {{newQuantity}},
  "fulfillmentLatency": 1
}

⚠️ Requires sellerId in credential.

5. Create Fulfillment

Marks an order as shipped.

Required:

• orderId

• items[]

• carrier

• trackingNumber

Payload:

{
  "orderId": "{{orderId}}",
  "items": [
    {
      "orderItemId": "{{orderItemId}}",
      "quantity": {{quantity}}
    }
  ],
  "carrier": "{{carrier}}",
  "trackingNumber": "{{trackingNumber}}",
  "shippingMethod": "Standard"
}

Example Workflow

Amazon Order → Slack Notification

1. SYNC TRIGGER

2. AMAZON (get_orders)

3. SLACK

Inventory Sync (Amazon → Airtable)

1. WEBHOOK TRIGGER

2. AMAZON (get_inventory)

3. AIRTABLE (update records)

Output Structure

Each node returns:

{
  "data": {},
  "action": "get_orders",
  "marketplaceId": "ATVPDKIKX0DER"
}

Access it like:

{{amazonOrders.data}}

Common Errors (and Fixes)

❌ “Credential not found”

• Credential not selected

• Or belongs to another user

❌ “Invalid credential format”

You must provide:

{
  "clientId": "",
  "clientSecret": "",
  "refreshToken": ""
}

❌ “orderId is required”

You are using:

• get_order

• or create_fulfillment

But didn’t provide orderId

❌ “sku is required”

You are updating inventory without SKU

❌ “sellerId is required”

Add this to your credential:

{
  "sellerId": "YOUR_SELLER_ID"
}

❌ Invalid JSON payload

• Missing commas

• Wrong quotes

• Broken variables

Best Practices

1. Always Use Variables

Bad:

"sku": "ABC123"

Good:

"sku": "{{sku}}"

2. Build Reusable Workflows

Design workflows that work for:

• 1 client

• 10 clients

• 50 clients

3. Start Simple

Test with:

• get_orders

• get_inventory

Then move to advanced actions.

4. Use Form Mode First

Only switch to JSON when needed.

Advanced Tip

You can combine Amazon with AI:

Example:

1. AMAZON (get_orders)

2. OPENAI (analyze orders)

3. SLACK (send summary)

Final Thoughts

The Amazon node is one of the most powerful integrations in Syncaut.

It allows you to:

• Automate operations across multiple seller accounts

• Reduce manual fulfillment work

• Maintain accurate inventory at scale

When combined with:

• Shopify

• WooCommerce

• AI models

You unlock a fully automated e-commerce backend.