42Crunch vs Intruder

Both tools position as developer-friendly vulnerability scanners, but they differ in deployment constraints and the teams they serve.

• 42Crunch operates as a managed or self-hosted service with a domain verification gate; authenticated scans require DNS TXT or HTTP well-known file proof of ownership before credentials are accepted.
• Intruder provides a SaaS console and on-prem option, with agent-based scanning for some integrations; authenticated scans rely on supplied credentials without a mandatory domain ownership check.

For teams that require air-gapped environments or strict control over scan egress, the on-prem option may be more suitable, whereas the domain gate aligns with scenarios where ownership must be proven before sensitive endpoints are touched.

The scope of each tool shapes which findings you can expect and which remain outside coverage.

• 42Crunch focuses on OWASP API Top 10 (2023) aligned detection, including authentication bypass, IDOR, privilege escalation, property exposure, and input validation. It supports OpenAPI 3.0/3.1 and Swagger 2.0 with recursive $ref resolution and cross-references spec definitions against runtime behavior.
• Intruder provides broader vulnerability categories beyond APIs, including web application checks (SQLi, XSS, SSRF) and infrastructure scanning; API coverage centers on common flaws but does not explicitly map to the OWASP API Top 10 framework.

If your requirement is API-specific validation with standards mapping, the specialized scanner is the baseline; if you need a mix of web and infrastructure findings in one workflow, the broader suite may reduce tool sprawl.

Securing authenticated scans is about minimizing exposure while maximizing coverage of protected endpoints.

• 42Crunch supports Bearer, API key, Basic auth, and cookies. It enforces a strict allowlist of forwarded headers (Authorization, X-API-Key, Cookie, and X-Custom-*).
• Intruder supports similar auth types and lets users define custom headers; session handling and cookie persistence are configured through the UI or importable session files.

Both approaches require credential management discipline. With 42Crunch, only the domain owner can initiate authenticated scans after verifiable proof, which reduces the risk of credential misuse in shared environments.

Pricing structure and integration options affect total cost of ownership and how tightly the tool fits into existing workflows.

• 42Crunch offers a free tier (3 scans/month, CLI), a mid tier focused on API coverage (15 APIs, dashboard, email alerts, MCP Server), a continuous monitoring tier with scheduled rescans and diff detection, and an enterprise tier with unlimited APIs, custom rules, and SSO.
• Intruder uses a subscription model based on scan credits and concurrent scans, with add-ons for integrations and team features; it does not publish explicit API-count limits in the same way.

Consider how many assets you need to scan continuously and whether you require CI/CD blocking. If budget predictability per API matters, the per-API pricing may favor one tool; if you prefer credit-based consumption, the other may be preferable.

How the tool connects to your pipelines and tooling influences adoption speed and ongoing maintenance.

• 42Crunch provides a CLI (middlebrick scan <url>) with JSON/text output, a GitHub Action that can fail builds on score regression, an MCP server for AI coding assistants, and a programmatic API for custom integrations.
• Intruder offers webhooks, native CI integrations (Jenkins, GitLab, etc.), and an API for triggering scans and retrieving results; it also supports scheduled scans and Slack/email notifications.

If your stack relies heavily on AI-assisted development, the MCP server may tilt the decision; if you need deep integration with existing CI/CD systems, evaluate which webhook and API contracts align with your orchestration layer.

Clarifying what each tool does not do reduces misaligned expectations during procurement.

• 42Crunch is a scanner only; it does not fix, patch, or block findings. It does not perform active SQLi or command injection, does not detect business logic issues, and does not replace a human pentester for high-stakes audits.
• Intruder similarly reports findings; remediation is handled through separate tooling or manual effort.

For compliance, middleBrick maps findings to PCI-DSS 4.0, SOC 2 Type II, and OWASP API Top 10 (2023). It helps you prepare for audits and supports audit evidence collection, but it is not a certification or compliance guarantee. Use these capabilities to streamline evidence gathering while recognizing that human review remains necessary for complex regulatory contexts.