Best API Security Software

Traceable AI is an application and API security platform that continuously discovers every API in an organization, including internal, shadow, rogue and third-party APIs, using sources such as network traffic, cloud integrations and eBPF-based workload monitoring. It evaluates risk posture, runs dynamic security testing covering OWASP Top 10 and business logic flaws like BOLA, and provides runtime protection that blocks known and unknown attacks, bot abuse and sensitive data exfiltration using contextual analysis of user, data and code activity. It also includes GenAI API protection for detecting prompt injection and data exfiltration through AI responses.

Founded in 2018 and originally headquartered in San Francisco, Traceable merged with DevOps platform Harness in March 2025 to form a combined AI-native DevSecOps company. Public pricing tiers are not listed; prospective customers must request a demo for a quote.

Cloudflare API Shield is a set of API security capabilities built into Cloudflare's global network, covering discovery, schema validation, authentication, and abuse protection. Basic Endpoint Management and schema validation are available on every plan, including Free, while mutual TLS client certificate verification and higher endpoint and schema limits unlock on paid tiers.

The full API Shield suite, including ML-based shadow API discovery, sequence analytics for detecting abusive request chains, and sensitive data detection, is available as an Enterprise add-on. Cloudflare's core plans are priced at Free ($0), Pro ($20 to $25 per month), and Business ($200 to $250 per month), with Enterprise API Shield pricing available only by contacting a Cloudflare account team.

Escape is a Paris-based offensive security platform built for modern APIs and web applications. It combines attack surface management, business-logic-aware DAST, and AI-driven pentesting agents to help security teams discover shadow APIs, test for vulnerabilities such as BOLA and IDOR, and validate real exploitability. The platform is agentless, reading OpenAPI or GraphQL schemas rather than requiring traffic proxies, and runs over 140 automated security tests aimed at keeping false positives low.

Escape targets AppSec and security engineering teams at growing and enterprise companies, offering CI/CD and ticketing integrations plus AI-assisted remediation suggestions tailored to common frameworks. It supports compliance mapping to standards like PCI DSS, HIPAA, SOC 2, and ISO 27001. Pricing is not published; Escape sells through custom enterprise quotes based on API estate size and testing needs, and the company has raised over 23 million dollars from investors including Balderton and Y Combinator.

F5 Distributed Cloud API Security is a SaaS platform that discovers, tests, monitors, and protects APIs throughout their lifecycle across public cloud, on premises, and hybrid environments. It maps APIs using traffic analysis, code repository scanning, and external crawling, automatically generating OpenAPI specification files even for undocumented shadow APIs.

The platform detects and blocks OWASP API Top 10 attacks in real time, using machine learning behavioral baselines to flag anomalies and score authentication risk. It also detects and masks sensitive data such as PII and PCI, HIPAA, and GDPR-regulated information, and offers an AI assistant for natural-language investigation of events. Pricing is consumption-based and quote-driven, with free trials available and pay-as-you-go options on AWS Marketplace.

Salt Security is an API security platform that discovers all APIs across an organization, including shadow and zombie APIs, and uses patented AI and machine learning to detect anomalous behavior and stop attacks in real time. Its Agentic Security Graph extends this to map AI agents and MCP servers alongside APIs, giving security teams visibility into what agents are doing and the ability to intervene. The platform also analyzes API design in pre-production and provides posture governance and remediation guidance.

Founded in 2018 and headquartered in Palo Alto, California, Salt Security serves large enterprises in finance, healthcare, retail and transportation, including customers such as Hyundai and SoFi. Pricing is not publicly listed and is customized to traffic volume and deployment scope, though third-party marketplace listings suggest six-figure annual contracts are typical.

42Crunch is an API security platform focused on securing APIs across the development lifecycle and, increasingly, agentic AI workflows. It performs static analysis (API Audit) of OpenAPI definitions against 300+ security and compliance checks, dynamic scanning (API Scan) that simulates real traffic against live implementations, and runtime protection through a lightweight micro-firewall that enforces the OpenAPI contract as a positive security model. It integrates directly into IDEs like VS Code and IntelliJ, and into CI/CD pipelines such as GitHub Actions, GitLab, Jenkins and Azure Pipelines.

Headquartered in Dublin, Ireland, with offices in the UK, France and California, 42Crunch offers transparent published pricing ranging from a 14-day free trial and low-cost individual plans to team and custom enterprise plans with unlimited scanning, SSO and dedicated support.

StackHawk is a developer-first API and application security testing platform built around dynamic application security testing. It scans REST, GraphQL, gRPC, and SOAP APIs for vulnerabilities such as SQL injection and XSS, and uses Smart Crawl to read OpenAPI specs and simulate real user flows with minimal manual setup.

Its Business Logic Testing catches BOLA, BFLA, and privilege escalation issues from the OWASP API Top 10, while source-code based discovery maps shadow APIs via GitHub and GitLab. StackHawk integrates directly with AI coding agents like Claude Code, Cursor, and GitHub Copilot, and tests LLM-powered features for prompt injection and data leakage. Pricing starts at $10 per user per month for the Wingman plan, with a custom Scale plan for larger teams.

Ghost Security is an Austin, Texas-based security company that began as an API and application security startup and has since evolved into a broader autonomous operating system for security agents. The platform runs AI agents that can map APIs and source repositories, detect risks such as BOLA and insecure deserialization, and act on incidents, vulnerability management, and supply chain and phishing threats, with variable autonomy levels ranging from notify-only to fully autonomous action.

Ghost Security emerged from stealth in 2022 with 15 million dollars in funding from investors including 468 Capital, DNX Ventures, and Munich Re Ventures. Agents connect to enterprise systems through a secure proxy so credentials never live on the agent itself, and every reasoning step is logged for auditability. Ghost Security does not publish pricing; prospective customers must contact sales or book a demo.

Wib was an Israeli API security company that built the Fusion platform, covering the full API lifecycle from development through production. Fusion Discovery crawled networks to inventory APIs and flag those handling sensitive data, Fusion Defense analyzed code and traffic for vulnerabilities and OWASP API Top 10 risks, and Fusion Analysis prioritized issues by business impact. The platform also supported positive security models built from learned or existing OpenAPI specifications.

In 2024, Wib was acquired by F5 for an undisclosed sum reported to be in the tens of millions of dollars. Wib no longer operates or sells as a standalone product; its website now redirects to F5's Distributed Cloud API Security offering, which incorporates Wib's discovery and protection technology. No independent pricing or plans are currently published for Wib.

Data Theorem API Secure is an automated, continuous security service that discovers every API across multi-cloud environments and analyzes its health without requiring agents or manual configuration. It combines SAST, DAST, IAST, and software composition analysis to test for vulnerabilities and misconfigurations, and builds a software bill of materials for third-party API components.

At runtime, the platform monitors over 200 API attack signals, defending against authentication bypass, authorization flaws, encryption weaknesses, bot abuse, and prompt injection targeting AI features. It also flags zombie and leaky APIs and scores compliance posture. Data Theorem does not publish pricing or offer a free trial; prospects must request a demo to get a quote.