middleBrick vs Akto

middleBrick is a black-box API security scanner that submits requests to a reachable endpoint and analyzes responses. No agents, SDKs, or code access are required; it supports any language, framework, or cloud target. Scans complete in under one minute using read-only methods (GET and HEAD) plus text-only POST for LLM probes. Akto also performs black-box assessment and provides multi-method authentication bypass checks, JWT misconfiguration detection, and probes for sensitive data exposure and SSRF. Both tools focus on what they can observe from the outside without modifying application code.

middleBrick maps findings to OWASP API Top 10 (2023), PCI-DSS 4.0, and SOC 2 Type II controls. It detects 12 categories including authentication bypass, JWT misconfigurations (alg=none, expired tokens, missing claims), BOLA and IDOR via sequential ID enumeration, BFLA and privilege escalation through admin endpoint probing, input validation issues such as CORS wildcard with credentials, rate-limit header discrepancies, and data exposure patterns including email, Luhn-validated card numbers, SSN-like strings, API key formats, and error/stack-trace leakage. It also checks encryption posture via HTTPS redirects, HSTS, and cookie flags. Akto covers many similar areas such as authentication flaws, IDOR, and OWASP API Top 10 mappings, though public documentation does not specify the full list of covered standards. middleBrick additionally includes an LLM security track with 18 adversarial probe types across Quick, Standard, and Deep scan tiers, addressing prompt injection, jailbreak, data exfiltration, and token smuggling scenarios.

middleBrick parses OpenAPI 3.0, 3.1, and Swagger 2.0 documents with recursive $ref resolution, cross-referencing spec definitions against runtime behavior to identify undefined security schemes, sensitive fields, deprecated operations, and missing pagination. Authenticated scanning is available from the Starter tier upward, supporting Bearer, API key, Basic auth, and Cookie methods. Domain verification is enforced via DNS TXT record or an HTTP well-known file to ensure only domain owners can scan with credentials. Header forwarding is limited to Authorization, X-API-Key, Cookie, and X-Custom-*. Akto also supports OpenAPI/Swagger import and authenticated scans; exact header allowlists and verification mechanisms are not detailed in publicly available materials.

The Web Dashboard centralizes scan management, report viewing, score trends, and branded compliance PDF downloads. The CLI via the middlebrick npm package runs middlebrick scan <url> with JSON or text output. A GitHub Action enforces CI/CD gates by failing builds when scores drop below a set threshold. The MCP Server enables scanning from AI coding assistants such as Claude and Cursor. Programmatic access is available through an API client for custom integrations. Continuous monitoring in Pro tier supports scheduled rescans every 6 hours, daily, weekly, or monthly, diff detection across scans, hourly-rate-limited email alerts, and HMAC-SHA256 signed webhooks that auto-disable after five consecutive failures. Akto provides dashboard, CI/CD integration, and alerting features, though specific monitoring intervals and webhook signing details are not always public.

middleBrick offers a Free tier with three scans per month and CLI access, a Starter tier at 100 USD per month for 15 APIs with dashboard, email alerts, and MCP Server, a Pro tier at 499 USD per month for 100 APIs with continuous monitoring, GitHub Action gates, and compliance reports, and an Enterprise tier at 2000 USD per month for unlimited APIs, custom rules, SSO, and dedicated support. Target users range from developers validating their own APIs to security teams requiring CI/CD integration and ongoing monitoring. Akto typically positions itself in the enterprise segment with custom pricing; exact public-tier equivalents are not consistently documented. For both tools, budget-conscious teams can compare published list prices and included API limits directly.

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 are also outside detection, as they require domain-specific human analysis. Blind SSRF and certain infrastructure-dependent issues are not in scope due to the absence of out-of-band verification. The tool does not replace a human pentester for high-stakes audits. Akto similarly emphasizes that it identifies potential issues rather than providing automatic fixes, and may require manual validation for complex logic flaws.