API security tool rankings
How we ranked these tools (and why runtime leaders rank above us)
Criteria, weighted equally: API discovery completeness, testing depth, runtime protection, CI/CD fit, time-to-value, and pricing transparency. Salt and Traceable lead because runtime protection at production scale is their strength. NightVision ranks #3 as a strong pre-production option with deterministic local discovery for supported REST frameworks, but it does not provide runtime protection.
The list
- Salt Security, best for runtime API threat protection
- Traceable, best for API observability + protection
- NightVision, best for pre-production API testing + discovery from source code
- Akamai API Security (Noname), best for edge-integrated API protection
- Escape, best for API business-logic and GraphQL testing
- StackHawk, best for spec-driven API scanning in CI/CD
- 42Crunch, best for OpenAPI contract security
- Wallarm, best for API security + WAAP combined
- Bright Security, best for dev-centric API + web scanning
- OWASP ZAP, best free and open-source option
The category leader in API runtime protection. Salt analyzes production API traffic with behavioral AI to detect attacks, business-logic abuse, and data exposure in real time. It's a defense tool, not a testing tool. It protects APIs in production rather than finding flaws before release.
Strengths
Deep behavioral analytics; strong enterprise adoption; mature attacker-detection models.
Limitations
Runtime-only, doesn't test pre-production or run in CI/CD; requires traffic mirroring; enterprise pricing.
Best fit: Large enterprises protecting high-value production APIs.
API security built on distributed-tracing roots. Traceable maps API behavior end to end, detects threats in production, and adds API testing capabilities on top of its observability core.
Strengths
Excellent API inventory from live traffic; strong data-flow visibility.
Limitations
Traffic-based discovery only finds APIs that receive traffic; testing is secondary to runtime protection.
Best fit: Organizations that want observability-grade API visibility with protection.
NightVision approaches API security from the code side: API eNVy™ generates an OpenAPI spec from supported source code in under 20 seconds and can surface shadow or undocumented routes before they appear in traffic. The generated spec feeds DAST in CI/CD; request-level findings retain HTTP evidence, and supported source-discovered API scans can add file and line context. Disclosure: this is our product, judge the claims by the free trial.
Strengths
Deterministic local API discovery for supported REST frameworks; file and line context on supported source-discovered API findings; CI/CD-native; from $15,000/year.
Limitations
Testing-focused, no runtime protection layer; younger brand than the runtime incumbents.
Best fit: Teams that want to find and fix API vulnerabilities before production, on every pull request.
Following Akamai's acquisition of Noname Security, this combines API discovery and posture management with Akamai's edge network for detection and blocking at scale.
Strengths
Massive edge visibility; posture management plus runtime defense in one.
Limitations
Platform-scale procurement; discovery is traffic-based; testing capabilities are not the core.
Best fit: Akamai customers and enterprises wanting edge-enforced API defense.
An API-first DAST with particular strength in business-logic flaws and GraphQL. Agentless, developer-oriented, and focused on the vulnerability classes traditional scanners miss.
Strengths
Deep GraphQL support; business-logic focus; modern developer experience.
Limitations
More black-box than code-connected; findings aren't tied to source lines.
Best fit: API-heavy organizations, especially GraphQL shops.
Developer-first DAST with configuration-as-code and a clean CI/CD workflow. Scanning is driven by the OpenAPI spec you provide.
Strengths
Excellent CI/CD ergonomics; config-as-code; strong documentation.
Limitations
Source-based spec generation uses an LLM-assisted workflow and availability varies by framework and plan; API-first product positioning.
Best fit: Teams with complete, current OpenAPI specs.
API security centered on the OpenAPI contract itself: static analysis of spec files, conformance scanning, and runtime protection driven by the spec.
Strengths
Rigorous spec auditing; shifts API security into design phase.
Limitations
Entirely spec-dependent: APIs without specs are invisible; narrower scope than full DAST.
Best fit: Design-first API teams with strong OpenAPI governance.
Combines API protection with web application and API protection (WAAP), covering REST, GraphQL, gRPC, and WebSocket traffic with inline blocking.
Strengths
Broad protocol support; inline protection; flexible deployment.
Limitations
Protection-oriented; testing and pre-production discovery are not the strength.
Best fit: Teams consolidating WAF/WAAP and API protection.
Modern DAST covering web apps and APIs with a validation-first approach to minimize false positives.
Strengths
Strong validation story; developer-friendly.
Limitations
API testing requires spec uploads; limited undocumented endpoint discovery.
Best fit: Dev teams wanting validated findings with spec-based scanning.
The leading open-source DAST, scriptable for API scanning via OpenAPI/GraphQL add-ons. Free and community-backed.
Strengths
Free; open source; highly customizable.
Limitations
Significant setup and tuning; no API discovery; no support.
Best fit: Budget-constrained teams willing to invest engineering time.
How to choose
Decide which job you're hiring for first. If attackers probing production APIs is the immediate risk, start with runtime protection (Salt, Traceable, Akamai). If vulnerable APIs reaching production is the root cause, start with pre-production testing and discovery (NightVision, Escape, StackHawk). Mature programs run both, and the discovery question is the connective tissue: a tool that only inventories APIs from production traffic finds them after they're exposed, while source-code discovery finds them before. Whatever you evaluate, ask every vendor the same question: "How do you handle the APIs we never documented?"
