Application Environment Verification
Android library and API to verify the safety of user devices, detect rooted devices and other risks
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Mango Labs
Public API idea board. Security is one of 51 categories in the public-apis GitHub list. This page lists all 54 APIs filed under Security in the fetch on 2026-09-30 (README commit 8939d46). Descriptions are that list’s own lines, not rewrites. A pricing label is shown only when those lines state a price; otherwise it says pricing not listed.
Notes already stored with this category in the catalog.
Android library and API to verify the safety of user devices, detect rooted devices and other risks
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Provide access to BinaryEdge 40fy scanning platform
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Best open-source password manager
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Botd is a browser library for JavaScript bot detection
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Bugcrowd API for interacting and tracking the reported issues programmatically
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Search engine for Internet connected host and devices
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Encrypting & decrypting text messages
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Provides data of offenders from all U.S. States and Pureto Rico
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Screen crypto addresses, emails, websites, IDs and countries against OFAC, EU, UK sanctions lists
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Chrome extension risk scoring
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Generate certificate signing requests and private keys without OpenSSL
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Ephemeral zero-knowledge encrypted data sharing
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Hash decryption MD5, SHA1, SHA3, SHA256, SHA384, SHA512
You could build… A signup check against passwords already exposed in breaches, without storing the password.
DNS, WHOIS/RDAP, SSL, subdomain enumeration, and email security in one parallel call
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Email address threat and risk prediction
You could build… A signup check against passwords already exposed in breaches, without storing the password.
An API for escaping different kind of queries
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Lists of filters for adblockers and firewalls
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Fraud detection API offering highly accurate browser fingerprinting
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Search engine for Internet connected assets and devices
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Screen order information using AI to detect frauds
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Searchable attack surface database of the entire internet
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Scan files for secrets (API Keys, database credentials)
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Query IPs in the GreyNoise dataset and retrieve a subset of the full IP context data
You could build… A signup check against passwords already exposed in breaches, without storing the password.
The industry’s first hacker API that helps increase productivity towards creative bug bounty hunting
You could build… A signup check against passwords already exposed in breaches, without storing the password.
A REST API to access high level cryptographic functions and methods
You could build… A signup check against passwords already exposed in breaches, without storing the password.
File and URL malware analysis powered by Falcon Sandbox
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Passwords which have previously been exposed in data breaches
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Perform OSINT via Intelligence X
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Check IP addresses against 140+ public threat intelligence blocklists
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Free VPN, proxy, Tor and datacenter IP detection. 13 sources, active probing
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Managed User Authentication Service
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Detect VPNs, proxies, Tor, bots and antidetect browsers at signup, login and checkout
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Programmatic interfaces to engage with the Microsoft Security Response Center (MSRC)
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Mozilla observatory http scanner
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Mozilla observatory tls scanner
You could build… A signup check against passwords already exposed in breaches, without storing the password.
U.S. National Vulnerability Database
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Face liveness, presentation-attack detection and 1:1 face match for identity verification
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Generate random passwords of varying complexities
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Phishing database
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Security and developer utility API -- malware, vulnerability, and domain checks, no signup
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Generate merchant-specific and one-time use credit card numbers that link back to your bank
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Scan, search and collect threat intelligence data in real-time
You could build… A signup check against passwords already exposed in breaches, without storing the password.
AI media forensics and synthetic content verification for video, audio, image, and text
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Domain and IP related information such as current and historical WHOIS and DNS records
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Search engine for Internet connected devices
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Access data on all Internet assets and build powerful attack surface management applications
You could build… A signup check against passwords already exposed in breaches, without storing the password.
SSL certificate validity, domain WHOIS status, and DNS record checks for any domain
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Deep SSL/TLS server analysis with A+ to F grading
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Risk scoring service from curated threat intelligence data
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Threat intelligence: incident clusters, validated IOCs, CVEs, ransomware leak-site victims
You could build… A signup check against passwords already exposed in breaches, without storing the password.
UK Police data
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Database of malicious URLs used for malware distribution
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Virushee file/data scanning
You could build… A signup check against passwords already exposed in breaches, without storing the password.
VulDB API allows to initiate queries for one or more items along with transactional bots
You could build… A signup check against passwords already exposed in breaches, without storing the password.
Same fetch, every category page.