Alternatives to APIsec at Series B/C companies

This page presents alternatives to APIsec for Series B and C companies that require a lightweight, black-box scanner to surface API risk before audits or production incidents. It focuses on capabilities, limits, and how the tool maps to established compliance frameworks rather than promising outcomes it cannot control.

The scanner operates as a self-service, black-box solution. You submit a URL and receive a risk score from A to F with prioritized findings. It probes only with read-only methods such as GET and HEAD, plus text-only POST for LLM probes, and completes most scans in under a minute. There are no agents, no SDK integration, and no code access required, making it applicable to any language, framework, or cloud environment without introducing runtime side effects.

The scanner detects issues across 12 categories aligned to the OWASP API Top 10 (2023). It also maps findings directly to PCI-DSS 4.0 and SOC 2 Type II, and supports audit evidence for relevant controls. Specific coverage includes authentication bypass, JWT misconfigurations such as alg=none or expired tokens, BOLA and IDOR via sequential ID probing, BFLA and privilege escalation attempts, property over-exposure, input validation issues like CORS wildcard misconfigurations, rate-limiting characteristics, sensitive data exposure including PII patterns and API key formats, encryption and header misconfigurations, SSRF indicators, and inventory management gaps. For LLM-facing APIs, it runs 18 adversarial probes across Quick, Standard, and Deep tiers targeting prompt extraction, jailbreak attempts, data exfiltration patterns, and token smuggling.

Authenticated scanning is available from the Starter tier onward, supporting Bearer tokens, API keys, Basic auth, and cookies. Domain verification is enforced through DNS TXT records or an HTTP well-known file, ensuring only the domain owner can scan with credentials. Header forwarding is limited to Authorization, X-API-Key, Cookie, and X-Custom-* headers to reduce noise. The scanner parses OpenAPI 3.0, 3.1, and Swagger 2.0 with recursive $ref resolution and cross-references spec definitions against runtime behavior to identify undefined security schemes or deprecated operations. Continuous monitoring on the Pro tier provides scheduled rescans, diff detection for new or resolved findings, score drift tracking, and HMAC-SHA256 signed webhooks with auto-disable after repeated failures.

Deliverables include a Web Dashboard for scanning and tracking score trends with downloadable compliance PDFs, a CLI via an npm package for scripted runs, a GitHub Action that can gate CI/CD based on score thresholds, an MCP server for AI coding assistants, and a programmable API for custom integrations. The tool does not fix, patch, block, or remediate findings; it reports with remediation guidance. It does not perform active SQL injection or command injection testing, does not detect business logic vulnerabilities, does not perform blind SSRF testing, and is not a replacement for a human pentester in high-stakes audits. Customer data is deletable on demand and retained for no longer than 30 days after cancellation, and it is never sold or used for model training.