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n8n is the ideal orchestrator for complex BlitzAPI workflows. Its node-based architecture allows you to chain our Waterfall Search, Enrichment, and CRM Sync steps into a single autonomous agent.

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Standard Configuration

You will interact with BlitzAPI using the native HTTP Request node.
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1. Create Credentials

To avoid copy-pasting your key in every node, create a reusable credential.
  1. Go to Credentials > New > Search for “Header Auth”.
  2. Name: x-api-key
  3. Value: YOUR_BLITZ_API_KEY
  4. Save as “BlitzAPI Production”.
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2. Configure the Node

Drag an HTTP Request node to your canvas.
  • Method: POST
  • URL: https://api.blitz-api.ai/api/search/waterfall-icp
  • Authentication: Select Generic Credential Type -> Header Auth.
  • Credential: Select the “BlitzAPI Production” credential you just created.
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3. Map the JSON Body

Set Send Body to active and Body Content Type to JSON.Use the Expression Editor to map your input data (e.g., {{ $json.company_url }}) into the JSON structure.

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⚡ Handling Rate Limits (Crucial)

n8n executes workflows extremely fast. If you process 1,000 items without precautions, you will hit BlitzAPI’s limit of 5 requests per second immediately, causing 429 errors. To scale safely, you must implement a Throttling Pattern.

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The “Split In Batches” Pattern

Do not connect the trigger directly to the HTTP Request. Use this structure:
  1. Split In Batches Node:
    • Set Batch Size to 1 (or 5 maximum).
  2. HTTP Request (BlitzAPI):
    • Connect it after the split.
  3. Wait Node:
    • Connect it after the HTTP Request.
    • Set Amount to 200 milliseconds.
  4. Loop Back:
    • Connect the Wait node back to the input of the “Split In Batches” node.
Why? This forces n8n to process items sequentially (or in small groups) with a tiny pause, ensuring you never exceed the API throughput capacity.

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Waterfall Recipes (Copy-Paste)

Here are optimized JSON payloads for common targeting scenarios.

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Scenario A: The Sales Leader

Logic: Find the CRO or VP Sales. If not available, fallback to a Director level. 
{
  "company_linkedin_url": "{{ $json.company_linkedin_url }}",
  "cascade": [
    {
      "include_title": ["Chief Revenue Officer", "CRO", "VP Sales"],
      "location": ["US", "GB"],
      "include_headline_search": false
    },
    {
      "include_title": ["Head of Sales", "Sales Director"],
      "location": ["US", "GB"],
      "include_headline_search": true
    }
  ],
  "max_results": 1
}

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Scenario B: The Marketing Decision Maker

Logic: Prioritize the CMO globally. Fallback to VP or Head of Marketing. 
{
  "company_linkedin_url": "{{ $json.company_linkedin_url }}",
  "cascade": [
    {
      "include_title": ["Chief Marketing Officer", "CMO"],
      "location": ["WORLD"],
      "include_headline_search": false
    },
    {
      "include_title": ["VP Marketing", "Head of Marketing"],
      "exclude_title": ["Assistant", "Intern"],
      "location": ["WORLD"],
      "include_headline_search": false
    }
  ],
  "max_results": 1
}

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Scenario C: The Founder (SMB Targeting)

Logic: Find the Owner or CEO, specifically in France or Germany. 
{
  "company_linkedin_url": "{{ $json.company_linkedin_url }}",
  "cascade": [
    {
      "include_title": ["Founder", "Co-Founder", "Owner"],
      "location": ["FR", "DE"],
      "include_headline_search": true
    },
    {
      "include_title": ["CEO", "PDG", "Gerant"],
      "location": ["FR", "DE"],
      "include_headline_search": false
    }
  ],
  "max_results": 1
}

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Troubleshooting

Check Expression Mode. In the Body parameter, ensure you are in JSON mode (not Form-Urlencoded). If using expressions like {{ $json.id }}, make sure they resolve to valid strings, not objects.
Check n8n Data Structure. BlitzAPI returns a results array for searches. You might need to add an “Item Lists” node (operation: Split Out Items) after the HTTP Request to flatten the results array into separate n8n items.
Check Credential Name. In your “Header Auth” credential, the name of the header must be exactly x-api-key. If you named it api-key or Authorization, it will fail.