Alternatives to 42Crunch for Microservice mesh boundary audit

What middleBrick covers

Black-box API scanning with risk score and prioritized findings
Covers authentication, IDOR, data exposure, and LLM security
OpenAPI 3.0/3.1/Swagger 2.0 parsing with spec-to-runtime correlation
Authenticated scanning with strict header allowlist and domain verification
CI/CD integration via CLI and GitHub Action for automated gates
Privacy-first data handling with deletable scan results

Purpose and scope of a mesh boundary audit

A mesh boundary audit assesses controls at the edge where services communicate, focusing on what enters and exits the mesh. The goal is to surface authentication gaps, authorization weaknesses, and data exposure early, without requiring code changes or agents. This approach suits dynamic environments where service topologies shift frequently.

How this scanner differs from mesh-centric alternatives

This scanner is a black-box tool that submits read-only requests to API endpoints and returns a risk score with prioritized findings. It does not require agents, SDKs, or access to service code, and it works regardless of language or cloud provider. Scan time remains under a minute, and destructive payloads are never used. The tool maps findings to OWASP API Top 10, PCI-DSS 4.0, and SOC 2 Type II, while helping you prepare for other frameworks through alignment of security controls.

Detection coverage relevant to boundary auditing

The scanner evaluates 12 categories aligned to OWASP API Top 10 (2023), including Authentication, BOLA and IDOR, BFLA and privilege escalation, and Data Exposure. It checks Input Validation issues such as CORS misconfigurations and dangerous HTTP methods, and surfaces sensitive data like PII, API keys, and error leakage. Other areas include Rate Limiting, SSRF indicators, Inventory Management, and LLM/AI Security through adversarial probing across multiple tiers.

OpenAPI spec and runtime correlation

The tool parses OpenAPI 3.0, 3.1, and Swagger 2.0 documents with recursive $ref resolution, then cross-references the spec against runtime behavior. This helps identify undefined security schemes, sensitive fields, deprecated operations, and missing pagination directly from the spec. Such correlation supports audit evidence for SOC 2 and validates controls required by PCI-DSS 4.0 without claiming compliance.

Authenticated scanning and safe operations

Authenticated scanning supports Bearer tokens, API keys, Basic auth, and cookies, with domain verification to ensure only domain owners can scan with credentials. The scanner enforces a strict header allowlist and uses read-only methods only. Private IPs, localhost, and cloud metadata endpoints are blocked at multiple layers, and customer data is deletable on demand and never used for model training.

Frequently Asked Questions

Can this scanner replace a penetration test for my API?

No. It detects and reports issues with remediation guidance but does not perform intrusive payload testing or assess business logic. Use it as a complement to, not a replacement for, human-led assessments.

Does the tool actively probe for blind SSRF or SQL injection?

It does not perform blind SSRF or active SQL injection testing. Those techniques require intrusive payloads that fall outside the non-intrusive scope.

How are scan results mapped to compliance frameworks?

Findings map directly to OWASP API Top 10, and the tool helps you prepare for PCI-DSS 4.0 and SOC 2 Type II by surfacing relevant control evidence. It does not claim certified or guaranteed compliance with any regulation.

Can I integrate scanning into CI/CD without a dashboard?

Yes. The CLI and GitHub Action allow CI/CD integration and can fail builds based on score thresholds. The API client supports custom automation for environments without a web interface.