Top Security APIs on API.market

Browse our collection of high-quality Security APIs

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Account verification
5.0(1)

Verify X (Twitter) accounts by username, email, or phone. Extract join dates, follower metrics, and registration presence.

3β€’8
15 FREE API units
Account verification
5.0(1)

Verify Amazon accounts by email, phone, or vanity handle. Detect Author profiles, Influencer Storefronts, customer accounts, and extract masked contact info.

11β€’44
10 FREE API units
Account verification

Concurrently scan digital footprints across 6 major social networks (Google, Microsoft, Facebook, Instagram, Snapchat, X) by email, username, or phone number in a single API call.

3β€’8
10 FREE API units
Account verification

High-speed verification for any Google Account: Gmail inboxes, custom-domain Google Workspace emails, and international phone numbers.

5β€’386
$25/month
Domain & IP intel

Look up a domain's A, AAAA, MX, NS, TXT, CNAME, SOA, CAA and SRV records in one call, with an email summary showing MX presence and SPF record.

1β€’2
$5/month
Domain & IP intel

Check if a domain is registered and get its registrar, creation and expiry dates, age, status, nameservers and DNSSEC from RDAP data.

1β€’2
$5/month
SSL & compliance

Check the HTTP security headers of any website, including HSTS, CSP and X-Frame-Options, and get a score, a grade and a list of fixes.

1β€’2
$5/month
Account verification

Generate cryptographically secure random passwords with an entropy score and UUID v4 identifiers, up to 100 per request, from two GET endpoints.

1β€’3
$5/month
Domain & IP intel

Check whether a DNS change has propagated by querying six public resolvers at once and getting their answers, agreement, consensus and response times.

1β€’2
$5/month
Content moderation

Detect and censor profanity in user text across 25+ languages, with leetspeak detection, custom blocked words and an allow-list for false positives.

1β€’3
$5/month
Domain & IP intel

Check if domain names are available across many extensions in one call via registry RDAP with DNS fallback, plus registrar, creation and expiry dates.

1β€’2
$5/month
SSL & compliance

Check the TLS certificate a site serves: trust, expiry, hostname match, days left, issuer, alt names, protocol and full chain.

1β€’1
500 FREE API units
SSL & compliance

Scan container images, git repos or uploaded code for CVEs and code security issues. Get a risk score and findings as JSON or PDF.

2β€’35
10 FREE API units
Domain & IP intel

DNS checker and DNS lookup API that audits a domain's A, AAAA, NS, MX, TXT and CAA records, DNSSEC, wildcard DNS and DNS host with a 0-100 health score.

2β€’11
100 FREE API units
Phishing detection

Paste raw email headers and get the delivery path plus SPF, DKIM and DMARC results as clean JSON.

1β€’10
500 FREE API units
Domain & IP intel

Check any URL's CORS policy in one call: simple request and preflight headers, plus detected misconfigurations as clean JSON.

1β€’8
500 FREE API units
SSL & compliance

Check any website's HTTP security headers and get an instant A+ to F grade with a 100-point score.

1β€’8
500 FREE API units
Domain & IP intel

Look up DNS records (A, AAAA, MX, TXT, NS, CNAME, SOA, CAA, PTR) for any domain via Cloudflare DNS-over-HTTPS β€” verify SPF/DKIM/DMARC in one call.

3β€’54
500 FREE API units
Account verification

Validate WhatsApp numbers for free and access complete public profiles, including photos, with unmatched performance.

27β€’2.3K
200 FREE API units
Domain & IP intel

Uptydupty is an API-only monitor for URLs. No dashboard to white-label, no competitor logo on the page your users see. Register a site, read JSON reports...

4β€’6
1K FREE API units
Account verification

Verify Microsoft accounts with enterprise Azure AD tenant detection, personal MSA classification, display names, and masked recovery info.

5β€’853
10 FREE API units
Account verification

Verify Snapchat accounts by username, email, or phone. Retrieve 3D Bitmojis, display titles, subscriber counts, star badges, and Snapcode QR links.

13β€’8.3K
10 FREE API units
Account verification

Verify Facebook accounts by email, phone, or username. Retrieve numerical Profile IDs, HD avatar photos, custom avatar flags, and linked Instagram accounts.

13β€’25
10 FREE API units
Account verification

Verify Instagram account existence with deep profile metrics, numerical User ID, follower counts, verified badges, and creator categories.

14β€’24
10 FREE API units
Domain & IP intel

Verify WhatsApp registration instantly with business classification, verified badge, avatar photo, and catalog detection.

3β€’3
5 FREE API units
Domain & IP intel

Check SPF/DKIM/DMARC configuration for any domain

2β€’36
150 FREE API units
SSL & compliance

Scan npm & PyPI packages for vulnerabilities, licenses & security scores

1β€’8
100 FREE API units
Domain & IP intel

DNS, SSL & Port diagnostics for any domain in one call

1β€’5
100 FREE API units
Domain & IP intel

Analyze text, usernames, and domains for homoglyphs, mixed scripts, and UTS #39 security risks using the latest Unicode 17 data.

2β€’13
100 FREE API units
Account verification

Instantly check password strength using advanced entropy analysis, get real-time scores, crack time, and suggestions without storing any data.

1β€’3
100 FREE API units
Domain & IP intel

Quickly retrieve comprehensive details for any IPv4 or IPv6 address, or automatically get client IP information with high performance.

1β€’1
$50/month
Domain & IP intel

Identify domain owners, validate SSL certificates, and check IP WHOIS data.

17β€’633
500 FREE API units
Domain & IP intel

Check SSL certificate details for any website in seconds. Validate domain security, issuer, and expiry with a fast, simple API call.

3β€’2
5 FREE API units
Domain & IP intel

Extract Core Certificate Details such as subject, issuer, validity dates, serial number, and signature algorithm, map out the entire certificate trust chain.

2β€’0
300 FREE API units
Domain & IP intel

Detect CMS, frameworks, JavaScript libraries, analytics tools, CDNs, server tech & more from any URL. Returns 50+ technology categories with confidence scores.

1β€’0
50 FREE API units
SSL & compliance

Audit HTTP security headers for any URL β€” check CSP, HSTS, X-Frame-Options, CORS, and 15+ headers. Returns a security score and remediation advice.

1β€’0
50 FREE API units
Account verification

Scrape Google search results in real time. Extract organic rankings, snippets, featured answers & People Also Ask. JSON output, free tier included.

1β€’0
50 FREE API units
SSL & compliance

Fetch, parse, and validate robots.txt files for any domain, instantly extracting crawl rules, sitemaps, and bot directives with high accuracy.

1β€’0
50 FREE API units
Fraud detection

Integrate powerful return fraud intelligence, leveraging 12 patterns, 5 risk tiers, and 8 prevention rules to build high-performance detection and scoring engin

1β€’5
$29/month
Account verification

The Retrieve Page Rank API provides search engine ranking insights for a specified domain, helping users monitor SEO performance and competitive standing.

11β€’11
1.5K FREE API units
SSL & compliance

Generate cryptographically strong, customizable passwords via REST. Secure way to generate strong, unique, random passwords.

2β€’0
1K FREE API units
Phishing detection

Access comprehensive, structured phishing intelligence to identify threat actors, indicators, and URL schemes, performing at 60 requests/minute for robust secur

1β€’5
$29/month
Fraud detection

Rapidly identify line type, carrier, spam score, and fraud risk for any phone number to enhance security and compliance.

3β€’0
50 FREE API units
Account verification

Fetch Open Graph tags, Twitter Cards, canonical URLs, meta robots, hreflang & full SEO meta from any webpage in one call.

1β€’0
50 FREE API units
SSL & compliance

Instantly audit any website or privacy policy for GDPR & EU AI Act compliance, returning a scored report in seconds.

2β€’7
3 FREE API units
Fraud detection

Identity Risk Scorer API. Composite fraud risk scoring from email, phone, and IP signals. Send a JSON POST request through api.market and receive a st

2β€’0
50 FREE API units
Domain & IP intel

Retrieve accurate WHOIS data, DNS records, and website insights with a fast and reliable API.

2β€’5
$5/month
Domain & IP intel

Effortlessly retrieve DNS records for any domainβ€”from A and AAAA to TXT and HTTPSβ€”with this comprehensive DNS Checker API.

15β€’1.7K
100 FREE API units