In today’s rapidly evolving digital landscape, APIs (Application Programming Interfaces) have become the backbone of online business, connecting services, and enabling new customer experiences.

However, as the API footprint grows, so does the attack surface making robust API security testing a critical pillar of enterprise cyber defense in 2025.

Whether you’re a security analyst, DevSecOps professional, or a technical decision-maker, finding the right API security testing partner is essential for safeguarding sensitive data, maintaining compliance, and defending your brand’s reputation.

This article ranks and reviews the 10 best API security testing companies for 2025.

Each company’s strengths, specifications, features, and unique value propositions are covered, so that you can make an informed buying decision.

Every review includes a yes/no comparison table, key features, reasons to buy, and a dedicated “Why We Picked It” section. Official website links are included where indicated.

Why API Security Testing Companies In 2025

API security breaches have surged globally, with attackers targeting poorly protected endpoints and exploiting API logic flaws.

Robust API security testing helps proactively identify vulnerabilities, enforce compliance, and protect business-critical applications.

In 2025, companies demand automated discovery, machine learning behavioral analysis, CI/CD integration, detailed reporting, and remediation guidance making specialist API testing partners indispensable.

Comparison Table: Top 10 Best API Security Testing Companies 2025

Tool Name	Automated API Discovery	Business Logic Testing	Real-Time Alerts	CI/CD Integration
Salt Security	Yes	Yes	Yes	Yes
Imperva	Yes	Yes	Yes	Yes
Akto	Yes	Yes	Yes	Yes
APIsec	Yes	Yes	Yes	Yes
Metlo	Yes	Yes	Yes	Yes
StackHawk	Yes	Yes	Yes	Yes
F5	Yes	Yes	Yes	Yes
Cequence Security	Yes	Yes	Yes	Yes
Traceable AI	Yes	Yes	Yes	Yes
Pynt	Yes	Yes	Yes	Yes

1. Salt Security

Why We Picked It

Salt Security leads the 2025 API security ecosystem with its AI-powered approach to runtime protection, API discovery, and behavioral analytics.

Its platform is trusted by some of the world’s most data-intensive organizations, continuously monitoring for logic flaws and abuse patterns missed by traditional tools.

Salt’s risk-driven approach means it identifies shadow APIs and exposed sensitive data, helping teams maintain compliance and avoid regulatory fines.

In a threat landscape where attackers are increasingly leveraging AI and sophisticated methods, Salt’s intelligent threat detection engine stands out.

Specifications

Salt Security operates as a SaaS and hybrid model, supports REST, GraphQL, SOAP, and gRPC protocols, and includes native integrations for major CI/CD providers.

AI-based traffic analysis and anomaly detection offer 24/7 coverage. It provides posture assessment, real-time alerts, and automated remediation advice.

The solution supports compliance programs (GDPR, HIPAA, PCI), and includes dashboard analytics for audit reporting. Deployment ranges from cloud-native agents to inline appliances.

Features

The platform’s features include continuous API discovery, behavioral logic attack detection, contextual threat scoring, sensitive data tracking, and compliance posture monitoring.

Salt supports integration with SIEM/SOAR systems, provides developer-first remediation, and allows for extensive custom rule creation.

API intelligence dashboards help prioritize risks, and there’s automated mapping of data flows to ensure no endpoint goes unchecked.

Reason to Buy

Organizations seeking to proactively defend their APIs, reduce the risk of data leaks, and streamline compliance will find Salt Security essential.

Its real-time analytics, comprehensive visibility, and advanced threat detection capabilities make it an ideal fit for modern enterprises and critical infrastructure providers.

Pros

• Comprehensive runtime behavioral analytics
• Fast, automated API discovery
• Developer-focused remediation workflows
• Compliance automation
• Scalable to large API estates

Cons

• High cost for small teams
• Requires initial onboarding/tuning

Best For: Enterprises with complex, high-risk API environments or advanced compliance requirements.

🔗 Try Salt Security here → "Salt Security Official Website"

2. Imperva

Why We Picked It

Imperva has established itself as a trusted leader in cloud security, extending its expertise into API protection—meeting the demands of large-scale, highly regulated environments.

Imperva’s automated positive security model offers a proactive posture, adapting in real time to new APIs as they are rolled out by dev teams, and automatically building protection based on uploaded API specs.

A robust suite of DAST capabilities and runtime protection ensures that both public and private APIs are covered.

Integration with Imperva’s core offerings (WAF, bot management) simplifies hybrid security management and gives customers a unified dashboard for threat analysis.

Enterprise-grade authentication and compliance support are key, and organizations benefit from automated vulnerability testing and reporting.

Specifications

Imperva’s API Security platform supports REST, SOAP, and GraphQL APIs. It offers SaaS and on-premises deployment, automatic discovery, customizable DAST coverage, reporting on test results, and runtime attack mitigation.

Integration with CI/CD and SIEM platforms is included, as well as role-based management.

Features

Features include automated API discovery, vulnerability scanning, runtime threat defense, centralized dashboard, positive security policy generation, and deep integration with Imperva’s WAF/bot products.

The platform ensures that even undocumented or legacy APIs receive appropriate coverage.

Reason to Buy

Imperva is a great fit for organizations already invested in Imperva security stacks, or any business seeking a unified platform for both application and API security that scales in large environments.

Pros

• Deep automation and integration with Imperva WAF
• Automated API inventory/discovery
• Built-in runtime protection
• Compliance-ready reporting
• Strong DAST capabilities

Cons

• Less “shift-left” coverage
• Pricing may be high for smaller operations

Best For: Large enterprises looking to extend existing application security infrastructure to APIs effortlessly.

🔗 Try Imperva here → "Imperva Official Website"

3. Akto.io

Why We Picked It

Akto.io claims the spot as the high-performance API scanning vendor of choice for enterprises in 2025, offering the industry’s largest API test repository with over 1000 custom tests.

Covering every critical class of vulnerability, Akto’s library includes unique logic, authentication, and authorization cases missed by competitors.

The platform enables contextual, intelligent DAST without the dependency on Swagger files or Postman, replaying real user traffic and analyzing complex data flows.

Akto’s custom test rules are especially useful for organizations with unique business logic, and its plug-and-play integrations make onboarding straightforward for modern DevOps and security teams.

Rapid test authoring, real-time alerts, and seamless CI/CD automation help teams identify new vulnerabilities as production expands, driving confidence for risk-conscious organizations.

Specifications

Akto.io is SaaS-based, supporting REST, GraphQL, and other modern API types.

Key integrations include leading CI/CD tools, developer ticketing, and notification platforms. Offers centralized dashboards for compliance and risk tracking, and custom rule configuration.

Features

Features comprise the largest library of out-of-the-box and custom security tests, intelligent traffic replay, contextual findings, agile test authoring, and flexible reporting options.

Business logic flaws, authentication issues, and sensitive data exposures are prioritized.

Reason to Buy

Organizations seeking broad vulnerability coverage and rapid detection—including logic flaws and advanced authentication vectors gain strong value from Akto’s deep test library and easy deployment.

Pros

• Widest test coverage
• Intelligent, traffic-based scanning
• Custom test authoring
• Real-time results and alerts
• Seamless CI/CD linkage

Cons

• Deepest value for larger API estates
• Requires time to tailor custom tests

Best For: Enterprises with demanding security requirements and complex, ever-evolving API environments.

🔗 Try Akto.io here → "Akto.io Official Website"

4. APIsec

Why We Picked It

APIsec is a cutting-edge solution for organizations seeking continuous, automated API penetration testing that runs in parallel to deployment pipelines.

Known for its AI-powered attack simulations, the platform delivers rapid vulnerability findings throughout the SDLC.

APIsec excels in logic flaw detection and comprehensive endpoint scanning, going far beyond legacy DAST to simulate thousands of real-world attack vectors.

The platform empowers development and security teams to find and fix issues early, leveraging detailed remediation guidance and real exploit verification to reduce false positives.

APIsec integrates seamlessly with major CI/CD tools, offering automated ticketing for detected vulnerabilities.

Specifications

Delivered via SaaS, APIsec analyzes REST, GraphQL, SOAP APIs, supporting dynamic attack simulation, role-based policies, comprehensive coverage of the OWASP API Top 10, and in-depth reporting.

Integrates with development/ticketing workflows and operates with “no code” endpoint onboarding.

Features

Highlights include automated scan scheduling, attack simulation playbooks, penetration testing support, role-based reporting, real-time data flows, and analytics dashboards.

Ticketing integrations automate remediation workflows, and coverage extends to authentication/authorization, logic, and compliance gaps.

Reason to Buy

APIsec is the platform of choice for businesses aiming for deep, repeatable API pentesting without the bottleneck of traditional services, and for dev teams prioritizing continuous assessment.

Pros

• Rapid, automated attack simulation
• Full lifecycle coverage
• Deep business logic and endpoint scanning
• Granular analytics and reporting
• Direct ticketing/remediation integration

Cons

• Pricing tiering for very large environments
• Some advanced scenarios may require tuning

Best For: Fast-moving development teams, SaaS platforms, and tech enterprises wanting repeatable, automated API pentests.

🔗 Try APIsec here → "APIsec Official Website"

5. Metlo

Why We Picked It

Metlo is an open source API security platform, focusing on rapid inventory, real-time detection, and automated blocking of malicious actors.

It is popular for its quick setup (under 15 minutes), making enterprise API security highly accessible.

Metlo is trusted by small and mid-size organizations for its simplicity, proactive monitoring, and seamless integration into cloud and development environments.

The tool employs ML-driven attack profiling and supports proactive API vulnerability testing directly within the platform.

Specifications

Metlo supports self-hosted and cloud deployments, automatically discovers endpoints, and integrates with Python, Java, Go, and Node stacks.

The platform includes granular PII data analyses, risk scoring, and comprehensive reporting dashboards.

Features

Core features are endpoint inventory, ML-powered attack detection, real-time malicious actor blocking, vulnerability reporting, custom risk scoring, and seamless CI/CD pipeline integration.

Metlo includes an HTTP request editor for building advanced security tests, automated alerts, and supports proactive compliance mapping.

Reason to Buy

Metlo’s open source ethos, fast setup, and autonomous attack detection make it a strong choice for growing organizations seeking control and customization.

Its community-driven development ensures continual innovation and adaptability to evolving threats.

Pros

• Open source and highly customizable
• Rapid setup and ease of use
• Real-time threat detection
• Detailed inventory and risk scores
• Proactive compliance workflows

Cons

• Limited enterprise support
• Requires manual configuration for advanced integrations

Best For: SMEs, open source enthusiasts, budget-conscious teams, rapid inventory

🔗 Try Metlo here → "Metlo Official Website"

6. StackHawk

Why We Picked It

StackHawk empowers organizations to “shift left” by integrating dev-native API security testing directly into source code repositories and CI/CD pipelines.

Its unique approach reveals shadow, zombie, and undocumented APIs from source, orchestrating automated scans for sensitive data and compliance risks.

StackHawk bridges the gap between security and development by providing actionable, context-rich remediation advice eliminating the backlog of unresolved security tickets in busy teams.

Every pull request is an opportunity to test, triage, and fix issues, turning security into an enabler of rapid development, not a blocker.

In 2025, StackHawk’s combination of source-level API mapping and modern, automated testing makes it a must-have for healthtech, fintech, and SaaS companies with growing API portfolios.

Specifications

StackHawk is offered as a SaaS platform, analyzing REST, GraphQL, SOAP, and gRPC APIs.

It syncs with GitHub and other SCM tools, integrates with major CI/CD systems, and provides risk-prioritized analytics, customizable workflows, and fast scan cycles.

Features

Feature set includes source repository analysis, automated security testing on every build, API type coverage, vulnerability evidence mapping, developer guidance, and flexible integration with ticketing and orchestration tools.

Reason to Buy

StackHawk is a go-to for security and development teams wanting to reduce risk across the entire API estate and fix vulnerabilities where they start: in the codebase.

Pros

• Dev-first CI/CD integration
• Complete API landscape discovery
• Automated, prioritized findings
• Integrated developer workflows
• Rich evidence and fix support

Cons

• Requires repo connectivity for deepest coverage
• Some learning curve for teams new to “shift-left” security

Best For: Agile, fast-moving product teams prioritizing security automation in their dev process.

🔗 Try StackHawk here → "StackHawk Official Website"

7. F5

Why We Picked It

F5 combines robust API security with deep threat detection powered by multi-layered analysis and ML. Its solutions are suited for organizations requiring both legacy and modern cloud-protective architectures.

F5’s strength lies in dynamic API discovery, policy enforcement, and continuous operational oversight, backed by global threat intelligence.

The company is widely adopted in high-risk, high-volume sectors for its scalability, reliability, and effective risk mitigation capabilities.

Specifications

F5 offers flexible cloud/on-prem/hybrid support, API discovery from code to production, behavioral analytics, and automated runtime protection.

Its architecture includes in-line enforcement, role-based controls, policy adaptation, and seamless SIEM and workflow integrations.

Features

The platform includes modern attack surface visibility, automated API endpoint mapping, runtime protection, policy enforcement, analytics dashboards, performance monitoring, and real-time alerting.

F5 enables multi-layered defense, supporting advanced business logic and injection flaw detection.

Reason to Buy

F5 provides proven operational efficiency, visibility, and security across distributed API environments.

Its managed services, dynamic threat detection, and policy automation offer significant value for large enterprises seeking control and continuous improvement.

Pros

• Deep analytics and ML threat detection
• API lifecycle protection
• Multi-cloud integration
• Continuous policy adaptation
• Reliable operational support

Cons

• Enterprise-grade solution may not fit all budgets
• Management complexity in large deployments

Best For: Large enterprises, distributed API environments, continuous oversight, operational efficiency

🔗 Try F5 here → "F5 Official Website"

8. Cequence Security

Why We Picked It

Cequence Security unites automated discovery, business logic vulnerability testing, and unified API protection under one intelligent platform.

Its API Security Testing solution accelerates integration of security into development cycles reducing manual planning through AI-powered test plan generation and offering rich reporting for both security and dev teams.

Cequence’s “Intelligent Mode” delivers customized, context-aware test plans, while the platform seamlessly integrates with CI/CD pipelines and popular collaboration tools for alerting and automated remediation.

The role-based access control ensures large teams retain visibility without sacrificing effective management and data segregation.

Business logic abuse, privilege escalation, and unknown endpoint exposure are just some risks covered by Cequence’s deep testing.

Specifications

SaaS offering, with robust integrations into DevOps toolchains. Supports dynamic test generation per API/application, dashboard-based analytics, role-based management, and production/non-production reporting.

Works with Cequence AI Gateway and includes automated remediation tracking.

Features

Autonomous test plan creation, business logic and compliance validation, vulnerability reporting, workflow integrations, and coverage analytics are core features.

Teams benefit from actionable insights, scheduled/adhoc reporting, and advanced endpoint coverage.

Reason to Buy

Cequence is recommended for large organizations needing tailored security test plans, team-based management, and continuous compliance especially in regulated sectors.

Pros

• AI-powered autonomous test planning
• Integration with major CI/CD tools
• Actionable, customized findings
• Deep business logic coverage
• Visual test management

Cons

• Most effective for larger organizations
• Configuration can take initial time

Best For: Large, regulated organizations seeking scalable, tailored API security testing in modern CI/CD workflows.

🔗 Try Cequence Security here → "Cequence Security Official Website"

9. Traceable

Why We Picked It

Traceable continues to impress with its full-lifecycle API security, combining dynamic payload-based testing, runtime analytics, and traffic-driven behavioral analysis.

Its strength lies in root-cause vulnerability tracing and rapid incident response, empowering both security and DevOps teams.

Traceable’s application maps and user session analytics reduce mean time to detect and remediate logical issues.

In 2025, Traceable bridges the gap between pre-production testing and runtime monitoring through effective contextual fuzzing and replay-based security assessments.

It offers deep coverage for the OWASP API Top 10, custom test suite creation, and granular vulnerability scoring.

This makes it a top choice for organizations looking to build API security into every stage of their development process, not just at runtime.

Specifications

Traceable is delivered as a SaaS solution with agent-based and agentless options. It supports automated API discovery, contextual fuzzing, and replay analysis for both public and private APIs.

The solution easily integrates into major CI/CD pipelines and provides reporting with vulnerability scoring (CVSS/CWE). Role-based access control and customizable alerting options are standard.

Features

Key features include dynamic API tracing, custom test suite scheduling, real-time threat analytics, sensitive data exposure prevention, integration with collaboration tools, and detailed remediation recommendations.

Flexible deployment models allow teams to optimize for scale, traffic, and API diversity.

Reason to Buy

Traceable is ideal for organizations looking for fast, actionable insights into API vulnerabilities and runtime threats.

It combines rapid scanning with deep analytics, making it suitable for dev-centric teams that need to secure APIs throughout the lifecycle.

Pros

• Dynamic fuzzing and replay-based testing
• Application/user session analytics
• Automated risk scoring
• Strong DevSecOps integrations
• Rich reporting and analytics

Cons

• Manual elements in test suite creation
• Some learning curve for advanced analytics

Best For: DevSecOps teams who want CI/CD-centric, scalable API security with real-time risk context.

🔗 Try Traceable here → "Traceable AI Official Website"

10. Pynt

Why We Picked It

Pynt is an innovative API security testing platform optimized for automated vulnerability detection and rapid remediation.

Its user-friendly interface enables agile security testing, making it suitable for cloud-native and hybrid businesses.

Pynt is praised for its dynamic risk analytics, instant reporting, and deep integration capabilities.

Organizations benefit from proactive threat identification, automation, and easy compliance tracking, helping secure critical applications efficiently.

Specifications

Pynt offers automated API scanning, rapid deployment, cloud and hybrid compatibility, instant risk analytics, and seamless integration with notification and ticketing tools.

The platform supports granular security controls and real-time compliance reporting.

Features

Core features include instant vulnerability detection, automated report generation, integration with workflow and incident tools, dynamic analytics dashboards, and continuous API protection.

Reason to Buy

Choose Pynt for agile API risk management, efficient threat mitigation, and clear, actionable reporting. Its platform is ideal for growing organizations and those needing fast, in-depth API security insights.

Pros

• Instant vulnerability analytics
• Automated testing and reporting
• Rapid onboarding
• Dynamic dashboards
• Agile deployment

Cons

• Feature set optimized for SMBs and agile teams
• Advanced integrations may require premium tier

Best For: SMBs, agile organizations, instant vulnerability analytics

🔗 Try Pynt here → "Pynt Official Website"

Conclusion

API security is no longer a “nice to have” it’s a fundamental requirement for any business leveraging digital channels or modern software architectures.

The top 10 API security testing companies of 2025 cover a spectrum of needs: from AI-powered behavioral analytics to developer-centric “shift-left” testing, from advanced compliance dashboards to streamlined, rapid onboarding.

Choosing the right partner from this list will empower your organization to stay ahead of emerging threats, reduce the risk of breaches, and enable confident digital innovation.

Each vendor on this list offers free trials, demos, and extensive documentation test drive the solutions above and elevate your API security posture in 2025.

The post Top 10 Best API Security Testing Tools in 2025 appeared first on Cyber Security News.