Top 40 Security APIs For Developers - Public APIs

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.

Provide access to BinaryEdge 40fy scanning platform.

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.

Security-first search engine API for AI agent skills with Trust Score.

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

Chrome extension risk scoring.

Email address threat and risk prediction.

An API for escaping different kind of queries.

Lists of filters for adblockers and firewalls.

Fraud detection API offering highly accurate browser fingerprinting.

Screen order information using AI to detect frauds.

Searchable attack surface database of the entire internet.

Scan files for secrets (API Keys, database credentials).

Query IPs in the GreyNoise dataset and retrieve a subset of the full IP context data.

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

Passwords which have previously been exposed in data breaches.

Perform OSINT via Intelligence X.

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.

U.S. National Vulnerability Database.

Automated security testing API for web apps.