Website Due Diligence API

Get a comprehensive trust and quality report for any website. Analyzes DNS health, SSL certificates, security headers, content quality, performance indicators, and overall trust score.
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Website Due Diligence API generates comprehensive trust and quality reports for any website.

  • DNS health and configuration analysis
  • SSL certificate validation and details
  • Security headers assessment
  • Content quality indicators
  • Performance metrics
  • Overall trust score with detailed breakdown

Perfect for investment due diligence, partnership vetting, lead qualification, and fraud detection.

API Documentation

Endpoints


Generates a comprehensive due diligence report for the given website.



                                                                            
GET https://pr133-testing.zylalabs.com/api/12319/website+due+diligence+api/23146/generate+due+diligence+report
                                                                            
                                                                        

Generate Due Diligence Report - Endpoint Features

Object Description
url [Required] The website URL to analyze
Test Endpoint

API EXAMPLE RESPONSE

       
                                                                                                        
                                                                                                                                                                                                                                                                                                                                        {"url":"https://www.google.com","timestamp":"2026-04-09T15:30:36.836Z","summary":{"score":24,"grade":"E","trustLevel":"LOW","highlights":["Valid SSL/HTTPS","Missing HSTS header","Missing privacy policy","Missing terms of service"],"domain":"www.google.com"},"domainAge":null,"dns":{"hasARecord":true,"hasAaaaRecord":true,"hasMxRecord":false,"nameservers":[],"provider":null},"ssl":{"hasHttps":true,"hasHsts":false,"redirectsToHttps":false},"securityHeaders":{"score":0,"maxScore":6,"headers":{}},"content":{"title":null,"description":null,"language":null,"hasStructuredData":false,"structuredDataTypes":[],"hasFavicon":false},"trust":{"hasPrivacyPolicy":false,"hasTermsOfService":false,"hasContactInfo":false,"contactEmails":[],"hasCopyright":false,"socialLinks":{"twitter":null,"linkedin":null,"facebook":null,"instagram":null,"github":null,"youtube":null}},"technical":{"hasRobotsTxt":true,"hasSitemap":true,"serverHeader":null,"poweredBy":null},"recommendations":["Add Strict-Transport-Security header to enforce HTTPS connections.","Configure HTTP to HTTPS redirect to ensure all traffic is encrypted.","Add a <title> tag to improve SEO and user experience.","Add a meta description to improve search result appearance.","Add a lang attribute to the <html> tag for accessibility and SEO.","Add Schema.org structured data (JSON-LD) to enhance search result features.","Add a favicon to improve brand recognition and browser tab appearance.","Add a privacy policy page to build user trust and comply with regulations (GDPR, CCPA).","Add terms of service to clarify usage rules and protect against liability.","Add contact information (email, phone, or contact page) to build trust.","Add a copyright notice to establish content ownership.","Add social media links to increase credibility and engagement."]}
                                                                                                                                                                                                                    
                                                                                                    

Generate Due Diligence Report - CODE SNIPPETS


curl --location --request GET 'https://zylalabs.com/api/12319/website+due+diligence+api/23146/generate+due+diligence+report?url=https://www.google.com' --header 'Authorization: Bearer YOUR_API_KEY' 


    

API Access Key & Authentication

After signing up, every developer is assigned a personal API access key, a unique combination of letters and digits provided to access to our API endpoint. To authenticate with the Website Due Diligence API simply include your bearer token in the Authorization header.
Headers
Header Description
Authorization [Required] Should be Bearer access_key. See "Your API Access Key" above when you are subscribed.

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Website Due Diligence API FAQs

The Website Due Diligence API provides data on domain registration details, SSL certificate status, hosting provider information, technology stack detection, social media presence, business legitimacy indicators, and an overall trust score.

The API typically returns data in JSON format, which is structured and easy to parse for integration into various applications.

The API can be used for investment due diligence, partnership vetting, lead qualification, and fraud detection, helping users assess the legitimacy and reliability of a website.

The reports include fields such as domain registration details, SSL certificate issuer and status, hosting provider and location, detected technology stack, social media presence metrics, business legitimacy indicators, and an overall trust score.

Businesses can integrate the API into their existing systems by making requests to retrieve website intelligence data, which can then be used to inform decision-making processes related to investments, partnerships, and risk assessments.

The "Generate Due Diligence Report" endpoint returns a comprehensive analysis of a website, including DNS health, SSL certificate status, security headers, content quality, performance metrics, and an overall trust score.

Key fields in the response include "url," "timestamp," "summary" (with score, grade, and trust level), "dns," "ssl," "securityHeaders," "content," "trust," and "technical" details, along with "recommendations" for improvement.

The response data is structured in a JSON format, organized into sections such as "summary," "dns," "ssl," "securityHeaders," "content," "trust," and "technical," allowing for easy parsing and integration.

The endpoint provides information on DNS configuration, SSL certificate validation, security headers, content quality indicators, performance metrics, and an overall trust score, offering a holistic view of the website's reliability.

Users can customize their requests by specifying the target website URL in the API call. Additional parameters may be supported in future versions to refine the analysis, but currently, the primary input is the website URL.

The data is sourced from various public and proprietary databases, including DNS records, SSL certificate authorities, and web crawlers that assess website content and security features, ensuring a comprehensive analysis.

Data accuracy is maintained through regular updates and validation checks against authoritative sources, ensuring that the information provided reflects the current status of the website being analyzed.

Typical use cases include assessing website trustworthiness for investments, vetting potential business partners, qualifying leads, and detecting fraudulent websites, helping users make informed decisions.

General FAQs

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To give you the opportunity to experience our APIs without any commitment, we offer a 7-day free trial that allows you to make up to 50 API calls at no cost. This trial can be used only once, so we recommend applying it to the API that interests you the most. While most of our APIs offer a free trial, some may not. The trial concludes after 7 days or once you've made 50 requests, whichever occurs first. If you reach the 50 request limit during the trial, you will need to "Start Your Paid Plan" to continue making requests. You can find the "Start Your Paid Plan" button in your profile under Subscription -> Choose the API you are subscribed to -> Pricing tab. Alternatively, if you don't cancel your subscription before the 7th day, your free trial will end, and your plan will automatically be billed, granting you access to all the API calls specified in your plan. Please keep this in mind to avoid unwanted charges.

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When you subscribe to an API free trial, you can make up to 50 API calls. If you wish to make additional API calls beyond this limit, the API will prompt you to perform an "Start Your Paid Plan." You can find the "Start Your Paid Plan" button in your profile under Subscription -> Choose the API you are subscribed to -> Pricing tab.

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