What is 42Crunch used for?

42Crunch is an API security platform that audits OpenAPI definitions, tests APIs and protects them at runtime, now extended to MCP servers. It is a good fit for shift-left security checks on OpenAPI files, inventorying and securing MCP servers, and protecting production APIs from attacks.

Yes. 42Crunch is free to use. 42Crunch is completely free.

Is 42Crunch open source?

No. 42Crunch is proprietary (closed-source) software. In the Security category, open-source options include DefectDojo, Dependency-Track and BunkerWeb.

What are some alternatives to 42Crunch?

42Crunch competes with Imperva, Akamai and F5.

42Crunch: features, pricing and alternatives

About 42Crunch

42Crunch is a commercial API security platform that helps organizations find and fix weaknesses in their APIs. It audits OpenAPI contracts, runs security tests against live APIs and enforces protection at runtime, with coverage aligned to the OWASP API Top 10, GraphQL security and AI-assisted remediation of findings in code.

The company has extended the platform to AI agents with MCP security governance. This includes discovering every MCP server an organization exposes or consumes, assessing security posture, vulnerability testing, protection against the OWASP MCP Top 10 and compliance reporting for AI regulations, shown in a dashboard that grades audit results.

42Crunch offers a free trial and a free MCP security assessment, along with tutorials, webinars, case studies and guides. It is a hosted platform aimed at security and API teams in larger organizations, and its pricing page lists current options. Language and region versions are available in English, French and German.

Key features

OpenAPI definition security audits
API security testing
Runtime API protection
GraphQL security
MCP server discovery and posture management
AI-assisted code remediation

Good fit for

→Shift-left security checks on OpenAPI files
→Inventorying and securing MCP servers
→Protecting production APIs from attacks

Tags: api-security; openapi; mcp-security; owasp; runtime-protection; devsecops; graphql

42Crunch: questions and answers

What is 42Crunch used for?: 42Crunch is an API security platform that audits OpenAPI definitions, tests APIs and protects them at runtime, now extended to MCP servers. It is a good fit for shift-left security checks on OpenAPI files, inventorying and securing MCP servers, and protecting production APIs from attacks.
Is 42Crunch free?: Yes. 42Crunch is free to use. 42Crunch is completely free.
Is 42Crunch open source?: No. 42Crunch is proprietary (closed-source) software. In the Security category, open-source options include DefectDojo, Dependency-Track and BunkerWeb.
What are some alternatives to 42Crunch?: 42Crunch competes with Imperva, Akamai and F5.