Contrast Assess

Contrast Assess is an agent-based application security testing tool for teams that want to find vulnerabilities while applications run, rather than rely solely on scans. It is best suited to development and AppSec teams working across supported runtimes and CI/CD workflows. Its runtime context and remediation guidance are compelling; application licensing and custom pricing make it a less straightforward fit for buyers seeking a free or self-service option.

Overview

Assess instruments running applications with sensors that combine static, dynamic and interactive testing. By observing execution, data flow, configuration and application traffic, it can identify risks in custom code, libraries, frameworks and configurations, including SQL injection, cross-site scripting and insecure configurations. That runtime context can help teams prioritize issues based on how an application behaves, rather than treating every finding as equally actionable.

Assess also integrates with Contrast SCA to identify vulnerable third-party libraries and determine whether vulnerable methods are actually called by the application. This is useful for teams trying to distinguish exposure from libraries that are present but not exercised. It does require an agent in the running application, so it is not a fit for teams unable to instrument their environments.

Key features

Runtime analysis and remediation

The agent monitors applications and APIs continuously, identifying vulnerabilities without waiting for a separate scanning cycle. Vulnerability lists include remediation guidance, while application scores, route coverage and flow maps give developers and AppSec teams different ways to understand and prioritize findings. Use in IDE, test and QA environments brings feedback closer to development; the value depends on being able to run the instrumented application in those workflows.

Workflow and security integrations

Documented integrations span GitHub, Azure DevOps, Jenkins, Jira, Slack, Microsoft Teams, IDEs and security platforms including Amazon Security Lake, AWS Security Hub, ServiceNow, Wiz, PagerDuty and Splunk. The Jenkins plugin can fail a job or mark it unstable when an application is vulnerable, making findings actionable within a CI pipeline rather than a separate reporting queue. Compliance and policy reporting further supports teams with governance needs.

Runtime and data coverage

Assess analyzes libraries, frameworks, custom code, configuration, runtime control and data flow, HTTP requests and responses, and back-end connections. Supported language coverage includes Java, Kotlin, Scala, .NET Framework, .NET Core, C#, VB.NET, Node.js, Python, Go and PHP. The current Flex Agent supports .NET Core, Java, Node.js, PHP and Python; the CLI supports Java, Node.js, .NET, Python and Go agents. Teams should match the agent and deployment path to the runtimes they need to cover.

Contrast states that source code and binaries remain on customer servers. Its hosted security services and data run on AWS facilities in the United States, Europe, the UK and Japan, with encryption in transit and at rest. Contrast also describes quarterly external network and cloud security assessments and annual external AppSec assessments. These controls will matter to buyers assessing data handling and service security, though they do not remove the need to check internal deployment requirements.

Pricing

Contrast Assess is paid, with custom pricing available on request. Both hosted and on-premises customers require application licenses, so teams should account for licensed application scope when evaluating cost. There are no published plan tiers, seat allowances, quotas or trial terms to compare; buyers should request pricing details and confirm licensing needs before committing.

Platforms

Assess is listed for API, Linux, macOS, self-hosted, web and Windows environments, with hybrid deployment. CLI configuration paths cover macOS, Linux and Windows. This broad platform range helps teams with mixed environments, but language and agent support vary by runtime, so platform availability alone does not establish coverage for every application.

Who it's for

Assess is a strong candidate for development and AppSec teams that can instrument running applications and want vulnerability feedback in IDE, test, QA and CI/CD workflows. Its runtime-informed SCA and application route and flow views suit teams that need to prioritize reachable issues and connect them to remediation. It is less suitable for buyers who need a free entry tier, public pricing, or a testing approach that does not depend on an application agent.

Pros and cons

• Pro: Runtime instrumentation combines code, configuration and traffic context, helping teams investigate findings in the behavior of a running application.
• Pro: Contrast SCA integration can show whether vulnerable library methods are called, supporting more informed dependency triage.
• Pro: Jenkins security gates and broad developer-tool integrations can put findings and enforcement into existing workflows.
• Con: Application licenses are required for hosted and on-premises deployments, and custom pricing requires a sales inquiry.
• Con: Agent and CLI runtime coverage differ, so teams must verify that their specific applications fit the supported paths.

Alternatives

Compare interactive application security testing software if you want to evaluate this category more broadly.

• New Relic IAST is worth considering if a free plan matters: it includes 100 GB of data ingest per month, one free full platform user and unlimited basic users.
• DongTai IAST may suit teams seeking a free, self-hosted option, with an open-source Docker Compose single-node or Kubernetes deployment.
• Waratek IAST offers a free trial for one application per organization with full IAST runtime analysis; consider it if a trial-based evaluation is a priority.
• Black Duck Seeker is another paid option in the application security testing category.
• HCL AppScan may fit teams wanting a free starting point, including CodeSweep, a downloadable on-prem GitHub extension with SAST scanning for 35+ languages.
• Acunetix is worth comparing if a defined pentest engagement is the goal: its Agentic Pentest plan is $500, paid once for a single application and API suite.
• OpenText Fortify on Demand is another paid, web-based option.
• NowSecure Platform may be more relevant for mobile-focused teams, with Android and iOS among its supported platforms; pricing is by demo or order form.

Verdict

Choose Contrast Assess if your developers and AppSec team can instrument supported applications and need runtime-informed findings, remediation guidance and workflow gates. Its strongest reason to buy is the combination of execution context and developer-oriented integration; its clearest reason to look elsewhere is the application-license requirement paired with custom pricing, especially for teams that need a free or immediately priced option.