Alternatives to Astra

What middleBrick covers

Black-box scanning with no agents or SDK dependencies
Risk scoring from A to F with prioritized findings
12 OWASP API Top 10 categories plus LLM security probes
OpenAPI 3.x and Swagger 2.0 parsing with ref resolution
Authenticated scanning with domain verification gate
CI/CD integration via GitHub Action and programmatic API

Purpose and scope of this comparison

This page compares API security scanners suitable for developer teams that require a self-service option. The focus is on capabilities, scan methodology, and integration options rather than marketing claims. Each listed tool is described based on publicly available feature sets and documented behavior.

middleBrick overview

middleBrick is a self-service API security scanner that emphasizes speed and broad coverage. Submit a URL and receive a risk score from A to F with prioritized findings. The scanner operates in black-box mode, requiring no agents, code access, or SDK integration. It supports any language, framework, or cloud, with scans typically completing in under a minute using read-only methods (GET and HEAD) and text-only POST for LLM probes.

Detection coverage and analysis depth

The scanner evaluates 12 categories aligned to the OWASP API Top 10 (2023), including authentication bypass, JWT misconfigurations, BOLA and IDOR, privilege escalation, property authorization, input validation, rate limiting, data exposure, encryption, SSRF, inventory management, and unsafe consumption. It also includes 18 LLM/AI security probe tiers covering prompt extraction, jailbreaks, data exfiltration, and token smuggling. OpenAPI 3.0, 3.1, and Swagger 2.0 files are parsed with recursive $ref resolution, and spec definitions are cross-referenced against runtime findings.

Authenticated scanning and integrations

Authenticated scans support 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-* headers. The platform provides a web dashboard for reporting and score trends, a CLI via an npm package, a GitHub Action for CI/CD gating, an MCP server for AI coding assistants, and a programmable API for custom integrations. Continuous monitoring options include scheduled rescans, diff detection, email alerts, and HMAC-SHA256 signed webhooks.

Alternative tools to consider

Several alternatives are viable depending on team requirements.

Postman provides interactive API testing and monitoring with security-focused collections and automated runs.
Insomnia offers a similar developer experience with environment variables and plugin-based security testing extensions.
Swagger Codegen and related OpenAPI toolchains can generate client code and validation suites that include security linting.
Custom scripts using curl or HTTP libraries with CI pipelines can enforce baseline security checks on API contracts.
Specialized SAST/DAST platforms that include API modules can be integrated into existing security workflows.

Limitations and compliance framing

middleBrick does not fix, patch, block, or remediate findings; it reports with remediation guidance. It does not perform active SQL injection or command injection testing, nor does it detect business logic vulnerabilities or blind SSRF. The tool supports compliance activities by mapping findings to PCI-DSS 4.0, SOC 2 Type II, and OWASP API Top 10 (2023). For other frameworks, it helps you prepare for and aligns with security controls described in relevant audit evidence, without claiming certification or guarantees.

Frequently Asked Questions

How does black-box scanning affect coverage compared to authenticated scans?

Black-box scanning relies on public endpoints and read-only methods, which may limit depth. Authenticated scans access protected routes and can validate authorization controls more thoroughly when credentials are provided.

What happens to scan data after account cancellation?

Customer scan data is deletable on demand and purged within 30 days of cancellation. It is never sold and is not used for model training.

Can the tool detect business logic flaws?

The tool does not detect business logic vulnerabilities. These require human expertise aligned with the specific domain and application behavior.

Does the scanner perform intrusive payloads like SQL injection?

No. The scanner uses read-only methods and does not send destructive payloads. SQL injection and command injection testing are outside its scope.

How are compliance mappings presented in reports?

Findings are mapped directly to PCI-DSS 4.0, SOC 2 Type II, and OWASP API Top 10 (2023). Other frameworks are referenced through alignment language, not compliance guarantees.