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Documentation Index

Fetch the complete documentation index at: https://docs.sixtyfour.ai/llms.txt

Use this file to discover all available pages before exploring further.

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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

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Get an API Key

Follow the steps in Get an API Key to create your account and generate a key.

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Base URL

All API endpoints are available at: 
https://api.sixtyfour.ai

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Endpoints

EndpointDescription
Company IntelligenceResearch and enrich company data with additional information and find associated people
People IntelligenceResearch and enrich people profiles with contact details, social profiles, and company data
Find EmailFind professional or personal email addresses for leads
Find PhoneFind phone numbers for leads
QA AgentEvaluate and qualify data against predefined criteria
WebhooksReceive HTTP notifications when async jobs complete
WorkflowsCreate, manage, and execute batch enrichment pipelines
Deep SearchRun agentic deep searches with natural language queries; poll status and download results
Filter SearchSearch people or companies with structured filters; supports cursor pagination

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Error Handling

See Errors for status codes, error shapes, and retry guidance.

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Rate Limits

See Rate Limits for limits and retry guidance.

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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.

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Quick Start Examples

Use this example to find an email address with a single cURL request:

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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"
    }
  }'

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Response

{
  "company": "Sixtyfour AI",
  "email": [
    ["saarth@sixtyfour.ai", "OK", "COMPANY"]
  ],
  "name": "Saarth Shah",
  "cost_cents": 5
}
Use this example to find a phone number with a single cURL request:

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Request

curl -X POST "https://api.sixtyfour.ai/find-phone" \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "lead": {
      "name": "Saarth Shah",
      "company": "Sixtyfour AI"
    }
  }'

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Response

{
  "company": "Sixtyfour AI",
  "name": "Saarth Shah",
  "phone": "+1 415-990-2048",
  "cost_cents": 30
}
Use this example to enrich a company with a single cURL request: 
curl -X POST "https://api.sixtyfour.ai/company-intelligence" \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "target_company": {
      "company_name": "Sixtyfour AI",
      "website": "https://sixtyfour.ai"
    },
    "struct": {
      "industry": "Primary business sector",
      "num_employees": "Approximate employee count"
    }
  }'

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Response

{
  "confidence_score": 9.0,
  "findings": [], // Deprecated - will be removed in a future update. Use structured_data and notes instead.
  "notes": "Sixtyfour AI Inc., verified by domain sixtyfour.ai, is a San Francisco-based AI company focused on developing an orchestration layer for company and people intelligence using AI research agents. The company builds AI research agents that enrich people and company data on demand, enabling data enrichment, email finding, and custom research APIs for sales intelligence and prospecting workflows. The official website is https://sixtyfour.ai and the SaaS product interface is available at https://app.sixtyfour.ai. Developer documentation is provided at https://docs.sixtyfour.ai/introduction. The company is SOC 2 Type 2 compliant (https://compliance.sixtyfour.ai/overview), underlining a commitment to security and compliance. The legal name is Sixtyfour AI Inc., and the company is privately held, founded in 2025 with headquarters in San Francisco, California, United States. The employee count is approximately 6-7, with key executives including co-founders Saarth Shah and Christopher Price, and founding engineers Hashim Khawaja and Erik Scarlatescu as per LinkedIn data. The company received a pre-seed funding round led by Y Combinator, raising $500,000. Industry classification is Research Services, focusing on artificial intelligence, market research, and sales. The LinkedIn company profile URL is https://www.linkedin.com/company/sixtyfourai, verified to belong to the target company. Twitter presence is at https://www.twitter.com/sixtyfourai. The company leverages a mature tech stack including Python, OpenAI, Elasticsearch, Redis, React, and more. Active job postings include roles in AI engineering and operations.",
  "org_chart": null,
  "references": {
    "https://app.sixtyfour.ai": "Sixtyfour AI SaaS application login and product platform.",
    "https://app.sixtyfour.ai/login": "Sixtyfour AI SaaS platform login page",
    "https://compliance.sixtyfour.ai/overview": "Compliance and SOC 2 Type 2 certification overview of Sixtyfour AI.",
    "https://docs.sixtyfour.ai/introduction": "Official Sixtyfour AI developer documentation site.",
    "https://sixtyfour.ai": "Official Sixtyfour AI website, source of company description and product information.",
    "https://www.linkedin.com/company/sixtyfourai": "Sixtyfour AI LinkedIn company profile provides company overview, employees, and executive information.",
    "https://www.sixtyfour.ai": "Official website of Sixtyfour AI - company overview and platform details"
  },
  "structured_data": {
    "company_name": "Sixtyfour AI",
    "industry": "Intelligence infrastructure (AI-powered people & company intelligence)",
    "num_employees": "Approximately 6-7",
    "website": "https://sixtyfour.ai"
  }
}