Free Security & Privacy APIs

Pre-interact JSON risk briefs for address, token and URL

IP/domain/URL reputation

IP/domain/URL reputation

Malware execution and analysis

Fraud & reputation detection

A volunteer cybersecurity project focused on providing resources and services that improve safety across Discord

Google Link/Domain Flagging

Reputation verdicts for IP addresses, domains, URLs and file hashes, plus CVE lookups with CVSS, EPSS and CISA KEV

Provide malware datasets and threat intelligence feeds

Malware Archive / file sourcing

Detonate a file, URL or hash in a sandbox and read the verdict, behaviour and indicators

Collect and share malware samples

Simple REST API that can scan submitted documents/files for the presence of threats

Scan URLs in a sandboxed browser and search past scans by domain, IP, ASN, JARM or favicon hash

IP abuse lookup, reporting and threat intelligence

Bulk queries and Download Malware Samples

Scan and Analyse URLs

Antivirus as a service - REST API that scans provided files for malware and NSFW content

IP/domain/URL reputation

Android library and API to verify the safety of user devices, detect rooted devices and other risks

Cryptographic proof API for HTTP exchanges — Ed25519, RFC 3161, and Sigstore Rekor attestation

Best open-source password manager

Botd is a browser library for JavaScript bot detection

Bugcrowd API for interacting and tracking the reported issues programmatically

Search engine for Internet connected host and devices

Encrypting & decrypting text messages

Provides data of offenders from all U.S. States and Puerto Rico

Sanctions screening: crypto addresses, emails, websites, IDs and countries against OFAC, EU, UK and 10+ lists

Free no-auth JSON feed of exploited CVEs with CVSS, EPSS and CISA KEV status

Domain, DNS, WHOIS/RDAP, TLS, email, brand and web intelligence

Email address threat and risk prediction

An API for escaping different kind of queries

Fraud detection API returning a weighted risk score from VPN, proxy, Tor and datacenter IP detection, email validation and Stripe payment signals

Lists of filters for adblockers and firewalls

Screen order information using AI to detect frauds

Searchable attack surface database of the entire internet

The industry’s first hacker API that helps increase productivity towards creative bug bounty hunting

Token-safety grades (A+–F) for Solana and EVM tokens; keyless REST API, 100 checks/day/IP

Perform OSINT via Intelligence X

Bot detection and fraud prevention API with IP reputation and email validation

Find leaked or exposed credentials by email, username, phone, domain, hash, or breach origin

Managed User Authentication Service

Programmatic interfaces to engage with the Microsoft Security Response Center (MSRC)

Mozilla observatory http scanner

Mozilla observatory tls scanner

Domain data API: compromised domain/IP checks, TLD stats, Top 1M ranks, new-domain search and domain lists for 1,500+ TLDs

Search sex-offender records across all 58 US state, territory and tribal registries in one query; REST API plus open data

Generate random passwords of varying complexities

Detect prompt injection in text, public webpages and documents for AI agents and RAG pipelines

Scans the requesting client's IP for open TCP ports with fast or deep modes on IPv4/IPv6

Generate merchant-specific and one-time use credit card numbers that link back to your bank

Scan, search and collect threat intelligence data in real-time

Domain and IP related information such as current and historical WHOIS and DNS records

Access data on all Internet assets and build powerful attack surface management applications

Threat intelligence API: incident clusters from 20,000 sources, validated IOCs, CVEs with KEV/EPSS status, ransomware leak-site victims

UK Police data

Scan files for viruses, worms, trojans, ransomware, and other kinds of malware by sending them to the attachmentAV API powered by Sophos

VulDB API allows to initiate queries for one or more items along with transactional bots