Sixtyfour API Reference
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Authentication
All API requests require an API key passed in the x-api-key header. You also need to set the Content-Type header to application/json.
x-api-key: YOUR_API_KEY
Content-Type: application/json
Get an API Key
Follow the steps in Get an API Key to create your account and generate a key.
Base URL
All API endpoints are available at:
Rate Limits
See Rate Limits for limits and retry guidance.
Endpoints
| Endpoint | Description |
|---|
| Enrich Company | Enrich company data with additional information and find associated people |
| Enrich Lead | Enrich lead information with contact details, social profiles, and company data |
| Find Email | Find professional or personal email addresses for leads |
| Find Phone | Find phone numbers for leads |
| QA Agent | Evaluate and qualify data against predefined criteria |
| Webhooks | Receive HTTP notifications when async jobs complete |
| Workflows | Create, manage, and execute batch enrichment pipelines |
| Deep Search | Run agentic deep searches with natural language queries; poll status and download results |
| Company Filter Search | Search company records with structured OpenSearch DSL filters; supports cursor pagination |
Error Handling
See Errors for status codes, error shapes, and retry guidance.
Deprecation Notice
The findings field in API responses is deprecated. It currently returns an empty list and will be removed in a future update. Use structured_data and notes instead.
Quick Example
Find an email address with a single cURL request:
curl -X POST "https://api.sixtyfour.ai/find-email" \
-H "x-api-key: YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"lead": {
"name": "Saarth Shah",
"company": "Sixtyfour AI"
}
}'
