CI/CD security gate

A CI/CD security gate inspects API definitions and runtime behavior before changes are promoted to production. Instead of treating API security as a final audit step, the gate evaluates each pull request or merge candidate and enforces a minimum risk threshold. Teams that skip this step often discover API issues late, when changes are already in production and exposure windows are larger.

Without automated checks, teams rely on manual review or periodic scans, which miss regressions introduced by routine code changes. Common gaps include unintentionally exposed internal fields, permissive CORS rules, over-privileged endpoints, and LLM-specific prompts or jailbreak paths being added without scrutiny. These issues can increase attack surface subtly across many deployments, especially when velocity is prioritized over visibility.

A workable workflow integrates scanning early and often in the pipeline. On each pull request, the CI job runs a read-only scan against a target environment or mock server, produces a score, and compares findings against a defined policy. If the score drops below the threshold or a new high-risk finding appears, the build fails and developers receive structured output describing the issue and remediation guidance. Example CLI usage:

middlebrick scan https://api.example.com/openapi.json --format json

Results can be consumed by GitHub Actions to gate merges, and by the web dashboard to track score trends across branches.

middleBrick operates as a black-box scanner that requires no code access or agents. It parses OpenAPI 3.0, 3.1, and Swagger 2.0 definitions, cross-references spec security schemes with runtime behavior, and supports authenticated scans using Bearer tokens, API keys, Basic auth, and cookies. Out of the box it detects issues spanning authentication bypass, IDOR, privilege escalation, data exposure, input validation misconfigurations, rate-limiting indicators, and LLM-specific adversarial probes across defined tiers. Findings are mapped to OWASP API Top 10 (2023), and relevant alignment is provided for PCI-DSS 4.0 and SOC 2 Type II.

You can set organization-wide score thresholds and per-API exceptions, and configure automated actions through the web dashboard, CLI, and GitHub Action. The GitHub Action fails builds when the score degrades beyond your chosen threshold, while the MCP server allows API security checks from AI coding assistants. Continuous monitoring options enable scheduled rescans, diff detection between runs, and HMAC-SHA256 signed webhooks that auto-disable after repeated failures. Note that the tool surfaces findings and remediation guidance; it does not apply fixes, patch code, or block infrastructure.

Automated scanning cannot detect business logic flaws that require domain understanding, nor does it perform intrusive tests such as active SQL or command injection. Blind SSRF and certain zero-step authorization issues are also out of scope, and the tool does not replace a human pentester for high-stakes audits. For regulations such as HIPAA, GDPR, ISO 27001, NIST, CCPA, or others, middleBrick helps you prepare for audits and supports audit evidence collection, but it does not certify compliance or guarantee adherence to any standard.