Collect and analyze real-time threat intelligence data
apiKey
✓
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SecurityTrails
Query domain, IP, WHOIS, and DNS records for security research
apiKey
✓
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Shodan
Search engine for discovering Internet-connected devices and vulnerabilities
apiKey
✓
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Spyse
Access detailed internet asset data for security and attack surface analysis
apiKey
✓
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Threat Jammer
Evaluate and score IPs and domains based on curated threat data
apiKey
✓
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UK Police
Public data about crimes and policing in the United Kingdom
No
✓
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Virushee
File and data scanning for malware and suspicious content
No
✓
✓
VulDB
Vulnerability intelligence API providing CVE data and risk context
apiKey
✓
?
Best Security APIs for Developers
A security API allows developers to integrate vulnerability scanning, threat intelligence, breach detection, SSL monitoring, and cybersecurity data into their applications. These APIs are essential for building secure software and security operations tooling.
CodeHelper's curated security API collection includes APIs covering CVE databases, threat feeds, SSL analysis, password breach detection, and network security scanning.
What to look for in a security API
Data freshness: Threat intelligence APIs must update continuously to reflect the latest vulnerabilities and indicators of compromise.
CVSS scoring: Vulnerability APIs should include CVSS v3 severity scores to help you prioritize remediation efforts.
False positive rate: Evaluate each API's false positive track record before integrating into automated security pipelines where incorrect blocks cause disruption.
How to use this API directory
Browse the curated list of APIs below.
Click any API to visit its documentation.
Check the Auth column to understand what credentials you need.
Whether you are building a vulnerability scanner or a security operations dashboard, this free curated API directory saves you hours of research.