Pricing alternative to Prompt Security

middleBrick is a self-service API security scanner designed to integrate into existing workflows without requiring code changes or SDKs. Submit a URL and receive a risk score graded A through F along with prioritized findings. The scanner operates as a black-box solution that does not require agents, code access, or integration with your development stack. It supports any language, framework, or cloud environment and typically completes a scan in under one minute using read-only methods such as GET and HEAD, with limited text-only POST for LLM probes.

The scanner evaluates 12 security categories aligned to the OWASP API Top 10 (2023), including Authentication bypass, Broken Object Level Authorization, Broken Function Level Authorization, Property Authorization over-exposure, Input Validation, Rate Limiting and Resource Consumption, Data Exposure, Encryption issues, SSRF, Inventory Management, Unsafe Consumption, and LLM / AI Security. It maps findings to PCI-DSS 4.0, SOC 2 Type II, and OWASP API Top 10 controls, helping you prepare for audits and surfacing findings relevant to these frameworks.

OpenAPI 3.0, 3.1, and Swagger 2.0 specifications are parsed with recursive $ref resolution, and the scanner cross-references spec definitions against runtime results to identify undefined security schemes, sensitive fields, deprecated operations, and missing pagination. For authenticated scanning, supported methods include Bearer tokens, API keys, Basic auth, and cookies, with a domain verification gate to ensure only domain owners can submit credentials. The scanner follows a read-only safety posture, blocking destructive payloads, private IPs, localhost, and cloud metadata endpoints at multiple layers.

The Web Dashboard provides centralized scan management, trend tracking, and downloadable branded compliance PDFs. The CLI, distributed as an npm package, enables command-line execution with structured JSON or text output using commands such as middlebrick scan <url>. A GitHub Action is available to act as a CI/CD gate that fails builds when the score drops below a defined threshold. An MCP Server allows integration with AI coding assistants including Claude and Cursor, and a programmatic API client supports custom integrations for existing toolchains.

Continuous monitoring on the Pro tier performs scheduled rescans every 6 hours, daily, weekly, or monthly, and tracks diffs between scans to highlight new findings, resolved items, and score drift. Email alerts are rate-limited to one per hour per API, and webhooks are HMAC-SHA256 signed with auto-disable after five consecutive failures to prevent notification storms.

The Free tier offers three scans per month with CLI access, suitable for individual developers or small projects. The Starter tier at 99 dollars per month supports 15 APIs, monthly scans, dashboard access, email alerts, and the MCP Server. The Pro tier at 499 dollars per month covers 100 APIs, with additional APIs billed at 7 dollars each, and adds continuous monitoring, GitHub Action gates, CI/CD integration, Slack and Teams alerts, compliance reports, and signed webhooks. Enterprise pricing starts at 2000 dollars per month, providing unlimited APIs, custom rules, SSO, audit logs, an SLA, and dedicated support.

When comparing to Prompt Security or similar solutions, consider that middleBrick does not charge per scan or per finding, which can reduce variable costs at scale. The lack of mandatory agents or SDKs lowers integration overhead, and the read-only design reduces operational risk and remediation effort. Data deletion on demand and purging within 30 days of cancellation ensure that storage and retention costs remain predictable.

The scanner includes dedicated LLM / AI Security coverage with 18 adversarial probes across Quick, Standard, and Deep scan tiers. These probes test for system prompt extraction, instruction override, DAN and roleplay jailbreaks, data exfiltration, cost exploitation, encoding bypasses such as base64 and ROT13, translation-embedded injection, few-shot poisoning, markdown injection, multi-turn manipulation, indirect prompt injection, token smuggling, tool abuse, nested instruction injection, and PII extraction. Detection of these techniques helps reduce the attack surface for applications that expose LLM endpoints or integrate generative AI components.

Additionally, the scanner identifies issues such as CORS misconfigurations with and without credentials, dangerous HTTP methods, debug endpoints, oversized responses, unpaginated arrays, and exposure of API key patterns for AWS, Stripe, GitHub, and Slack. Error and stack-trace leakage, sensitive claims in JWT tokens, and misconfigured security headers are also surfaced with remediation guidance.

middleBrick is a scanning tool and does not fix, patch, block, or remediate issues; it reports findings with guidance for manual review. It does not perform active SQL injection or command injection testing, as those methods fall outside the read-only scope. Business logic vulnerabilities require human expertise aligned to your domain, and blind SSRF or other out-of-band infrastructure tests are not in scope. The scanner does not replace a human pentester for high-stakes audits.

For compliance, the tool surfaces findings relevant to frameworks such as PCI-DSS 4.0, SOC 2 Type II, and OWASP API Top 10, but it does not certify compliance with HIPAA, GDPR, ISO 27001, NIST, CIS, CCPA, NIS2, DORA, FedRAMP, DPDP, APPI, PDPA, PIPEDA, PIPA, UK DPA, LGPD, SOX, GLBA, FERPA, or other regulations. Use the scanner as part of a broader security program rather than a standalone compliance solution.