42Crunch as a CI security gate

A CI security gate inspects API definitions and runtime behavior early in the delivery pipeline. It is expected to block merges when risk is high, produce machine-readable results for automation, and integrate without requiring deep security expertise from every developer. The gate should surface findings aligned to OWASP API Top 10 (2023), map issues to PCI-DSS 4.0 and SOC 2 Type II control references, and provide evidence to support audit activities.

middleBrick is a self-service API security scanner designed for automation-friendly environments. You submit a URL or OpenAPI document and receive a risk score from A to F with prioritized findings. The scanner operates as a black-box solution, requiring no agents, SDKs, or code access, and completes in under a minute using read-only methods. In CI, the CLI can be invoked as a step, returning JSON output that a pipeline can evaluate against a score threshold to fail or pass the build.

middlebrick scan https://api.example.com --output json

Authenticated scanning can be enabled for deeper coverage when credentials are provided through a secure store, with domain verification ensuring only the domain owner authorizes credential use. The tool supports Bearer tokens, API keys, Basic auth, and cookies, and forwards only a strict allowlist of headers to limit accidental data exposure.

In a CI context, the scanner checks for issues that commonly violate security expectations for published APIs. It detects problems across 12 categories aligned to OWASP API Top 10 (2023), including authentication misconfigurations, BOLA and BFLA, input validation flaws, rate limiting issues, data exposure risks, and injection-like concerns in LLM endpoints. When an OpenAPI specification is provided, it parses definitions and cross-references them against runtime behavior to highlight undefined security schemes, deprecated operations, and missing pagination or sensitive field exposure.

The tool does not perform intrusive exploit testing such as active SQL injection or command injection, as those are outside its read-only scope. It also does not detect business logic vulnerabilities or blind SSRF, which require domain context and out-of-band infrastructure. These limitations are expected for any scanner integrated into a gate; teams should complement automated checks with focused manual reviews where needed.

middleBrick offers multiple integration points suitable for CI environments. The GitHub Action can enforce a minimum score threshold and fail the build when violations exceed policy. The MCP server allows AI coding assistants to trigger scans during development, and the API client supports custom integrations for proprietary pipelines. Continuous monitoring in higher tiers enables scheduled rescans and diff detection, so teams are alerted to new findings or score drift over time via email or HMAC-SHA256 signed webhooks.

Scan data is deletable on demand and retained only as long as allowed by policy, with customer data never sold or used for model training. This behavior aligns with privacy-aware CI practices and supports audit evidence requirements without assuming certification or compliance guarantees.

Gate-based scanning is most effective when combined with other controls. middleBrick does not fix, patch, or block issues; it reports findings with remediation guidance. It does not perform active exploitation, nor does it replace a human pentester for high-stakes audits. The tool surfaces findings relevant to compliance frameworks such as PCI-DSS 4.0 and SOC 2 Type II, and helps prepare for controls described in OWASP API Top 10 (2023), but it does not certify compliance with HIPAA, GDPR, ISO 27001, NIST, CCPA, or other regulations.

Organizations should treat the scanner as one component of a broader security strategy, using its output to inform ticket creation, policy updates, and targeted manual testing. By acknowledging what it does and does not do, teams can integrate the tool into their CI gates with clear expectations and reduced noise.