What is an API security scanner?

An API security scanner tests application programming interfaces for vulnerabilities that can allow unauthorized access, data exposure, injection, or abuse of business logic.

What API vulnerabilities can SmartScanner detect?

SmartScanner checks API behavior for issues including broken object-level authorization, broken authentication, excessive data exposure, injection flaws, and security misconfigurations.

Does SmartScanner support authenticated API scanning?

Yes. SmartScanner supports testing protected application areas with configured authentication, sessions, and tokens where applicable.

Does API scanning run locally?

Yes. SmartScanner runs on Windows, and scan requests and results remain on your computer rather than being uploaded to a hosted scanning service.

SmartScanner See OWASP coverage

API security scannerFree scan

Find the API flaws attackers use to reach your data.

SmartScanner tests REST APIs and backend services for authentication, authorization, injection, data exposure, and OWASP API Top 10 risks.

No signup or credit card Runs on Windows Scan data stays local

Scan your API now

Enter a target and launch SmartScanner with the URL ready to test.

Dynamic testing from your computer. No data upload required.

Test the layer that connects your product to its data

REST APIsJWT / sessionsAccess controlOWASP API Top 10

Why API security is different

Your API is not just another URL.

APIs expose business data and actions directly. A useful API security scanner needs to understand request structure, identity, authorization, and what the response reveals.

Map the contract

Discover endpoints, parameters, request methods, and response structures that make up the API surface.

Test identity and access

Look for authentication gaps, broken object-level authorization, and actions users should not be able to perform.

Validate what comes back

Inspect responses for injection behavior, excessive data exposure, and evidence worth investigating.

API risk coverage

Find the failures between a request and a data leak.

SmartScanner helps expose the weaknesses that can let an attacker authenticate as the wrong user, access the wrong object, or send input your backend trusts too much.

Broken authorization

BOLA, object access, and privilege boundary issues.

Authentication flaws

Weak login, token, session, and identity controls.

Excessive data exposure

Responses that reveal more than the client needs.

Injection and abuse

Unsafe input, misconfiguration, and abuse paths.

API assessment

In progress

GET /api/accountsMapped

Response schema and identity context captured

Authorization checksTesting

Object and role boundaries under review

POST /api/ordersQueued

Injection and data exposure tests next

Designed for API teams

Useful from endpoint discovery to remediation.

Browse all security checks

Authenticated scanning

Reach protected API areas with sessions and configured authentication.

Modern services

Test backend services, microservices, and API-driven applications.

Verified findings

Review evidence and context to separate signal from noise.

Actionable reports

Give developers clear impact and remediation guidance.

Protect the data behind your product

Start your free API security scan.

No account required. Launch SmartScanner locally and find the API risks that deserve your team’s attention.

Launch Free Scan See modern web coverage