IPWhois.net Blacklist
Anti-Malware
Community IP blacklist to check and report abusive IP addresses
No keyHTTPS
Free Anti-Malware APIs
Free public APIs for anti-malware, each one verified and kept up to date.
19 listed · 2 need no key · 3 work in the browser
URLhaus
Anti-Malware
Bulk queries and Download Malware Samples
No keyHTTPS
AlienVault Open Threat Exchange (OTX)
Anti-Malware
IP/domain/URL reputation
API keyCORSHTTPS
CAPEsandbox
Anti-Malware
Malware execution and analysis
API keyCORSHTTPS
MalDatabase
Anti-Malware
Provide malware datasets and threat intelligence feeds
API keyCORSHTTPS
AbuseIPDB
Anti-Malware
IP/domain/URL reputation
API keyHTTPS
Dymo API
Anti-Malware
Multi-account and fraud detection. Sending emails without ending up in SPAM
API keyHTTPS
Google Safe Browsing
Anti-Malware
Google Link/Domain Flagging
API keyHTTPS
MalShare
Anti-Malware
Malware Archive / file sourcing
API keyHTTPS
MalwareBazaar
Anti-Malware
Collect and share malware samples
API keyHTTPS
Metacert
Anti-Malware
Metacert Link Flagging
API keyHTTPS
NoPhishy
Anti-Malware
Check links to see if they're known phishing attempts
API keyHTTPS
Phisherman
Anti-Malware
IP/domain/URL reputation
API keyHTTPS
Scanii
Anti-Malware
Simple REST API that can scan submitted documents/files for the presence of threats
API keyHTTPS
URLScan.io
Anti-Malware
Scan and Analyse URLs
API keyHTTPS
VirusTotal
Anti-Malware
VirusTotal File/URL Analysis
API keyHTTPS
VirusTotal
Anti-Malware
VirusTotal File/URL Analysis
API keyHTTPS
Web of Trust
Anti-Malware
IP/domain/URL reputation
API keyHTTPS
Web Of Trust (WOT)
Anti-Malware
Website reputation
API keyHTTPS
All 19 Anti-Malware APIs
Free Anti-Malware APIs — common questions
Counts and timings below come from our own scheduled checks of this category.
How many free anti-malware APIs are there?
We track 19 in this category, of which 16 responded at our last check. 2 of them need no API key.
Which anti-malware APIs work without an API key?
2 of the 19 entries here need no credential. Filter this page by "no key" to see them, or browse the no-key collection for every keyless API across all categories.
Can I use these anti-malware APIs in a browser app?
None of the entries in this category currently combine no-key access with CORS headers, so you will need a small server-side proxy to use them from browser JavaScript.
Which is the fastest free anti-malware API?
Of the keyless options that responded at our last check, IPWhois.net Blacklist was quickest at a median 401 ms. Speed is only one factor — coverage and licensing usually matter more — but it is measured here rather than claimed.
How do you know these APIs still work?
We call every listing on a schedule and record the status code, response time and whether CORS headers came back. Those results drive the badges on this page. Across the whole catalogue, 487 of 2,712 entries were not responding at the last full run, which is the sort of thing an unchecked list never tells you.