Is 42Crunch good for AI feature pre-release gate?
What middleBrick covers
- Black-box API scanning without agents or code access
- Read-only methods with strict network safety controls
- 12 OWASP API Top 10 (2023) detection categories
- LLM adversarial probes for prompt injection and jailbreaks
- OpenAPI 3.x and Swagger 2.0 spec-aware analysis
- Authenticated scanning with domain verification gate
Scope and approach for AI feature pre-release gate
An AI feature pre-release gate should validate API surface security before exposure, focusing on runtime behavior rather than static assumptions. middleBrick is a black-box API security scanner designed to assess deployed endpoints using read-only methods. It does not instrument code or require access to model weights, making it applicable to scenarios where source is unavailable or models are hosted externally.
Detection coverage relevant to AI feature endpoints
AI features often expose new HTTP surfaces, webhooks, or callback URLs that expand the attack boundary. The scanner covers 12 categories aligned to OWASP API Top 10 (2023), including Authentication, SSRF, Data Exposure, Unsafe Consumption, and LLM / AI Security. For LLM-specific risks, the scanner executes 18 adversarial probes across Quick, Standard, and Deep tiers, targeting system prompt extraction, instruction override, jailbreak attempts, data exfiltration, token smuggling, and prompt injection variants.
OpenAPI and spec-aware analysis
The scanner parses OpenAPI 3.0, 3.1, and Swagger 2.0 documents with recursive $ref resolution. It cross-references spec definitions against runtime findings to highlight undefined security schemes, sensitive fields, deprecated operations, and missing pagination. This helps identify discrepancies between intended AI feature behavior and actual runtime exposure, especially when endpoints accept URL or body inputs that may enable SSRF or data leakage.
Authenticated scanning and deployment constraints
Authenticated scanning (Starter tier and above) supports Bearer, API key, Basic auth, and Cookie methods, gated by domain verification to ensure only domain owners can scan with credentials. Header forwarding is limited to Authorization, X-API-Key, Cookie, and X-Custom-* to reduce unintended side effects. The scanner enforces read-only methods and blocks private IPs, localhost, and cloud metadata endpoints at multiple layers, aligning with safe assessment practices for pre-release environments.
Limitations and complementary practices
middleBrick does not fix, patch, block, or remediate findings; it detects and reports with remediation guidance. It does not perform active SQL injection or command injection testing, which requires intrusive payloads outside its scope. Business logic vulnerabilities and blind SSRF requiring out-of-band infrastructure are also out of scope. For high-stakes audits or architecture reviews, a human pentester remains necessary.