Dev tools · alternatives · 2026
24 alternatives to Patronus Scanner
Patronus Scanner secures AI apps and agents by scanning text, URLs, files and MCP servers for prompt injection and data leakage.
Patronus Scanner is a security tool that detects prompt injection attacks and sensitive data leakage in AI applications and agents. It scans text, URLs, files, and MCP servers before content reaches AI models. The tool… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
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On-device AI firewall — see and control AI traffic, locally
May 2026 · patronus.studio · its alternatives →
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I noticed the growing security concerns around MCP (https://news.ycombinator.com/item?id=43600192) and built an open source tool that can detect several patterns of tool poisoning attacks, exfiltration channels and cross-origin manipulations. MCP-Shield scans your installed servers (Cursor, Claude Desktop, etc.) and shows what each tool is trying to do at the instruction level, beyond just the API surface. It catches hidden instructions that try to read sensitive files, shadow other tools' behavior, or exfiltrate data. Example of what it detects: - Hidden instructions…
2025 · github.com · its alternatives →
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0xAudit▲110The security layer for AI agents to scan, fix verify via MCP
Feb 2026 · 0-x-audit.com · its alternatives →
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Online automated vulnerability scanner to secure firewalls, servers, web applications, and apis. Try 14 days for free.
2020 · hostedscan.com · its alternatives →
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Scan any LLM chatbot for vulnerabilities
Apr 2026 · github.com · its alternatives →
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Smart scanner app to make your remote work easy
2021 · abbyy.com · its alternatives →
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Panguard.AI▲20Open-source malware scanner and runtime guard for AI agents
Jul 2026 · panguard.ai · its alternatives →
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Open-source security gateway & static scanner for AI agents. Enforce role-based access control (RBAC), human-in-the-loop approvals, segregation of duties, and cryptographically signed, offline-verifiable audit logs. - makerchecker/MakerChecker
Jul 2026 · github.com · its alternatives →
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Scan MCP▲7MCP scanning & threat observability for AI-native tools
2025 · scanmcp.com · its alternatives →
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A Smart and AI driven Web Vulnerability Scanner
2025 · thesmartscanner.com · its alternatives →
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We’re open-sourcing a simple way to add “canary tools” to AI agents via MCP honeypots. These are functions your agent should never call during normal operation. If a canary is invoked, you get a high-fidelity signal of prompt-injection, tool hijacking, or lateralization—no heuristics, no extra model calls. What it is: - Go framework exposing decoy tools over MCP that look legitimate (names/params/descriptions), return safe dummy output, and emit telemetry when invoked. - Runs alongside your real tools; ship events to stdout/webhook or your pipeline (Prometheus/Grafana,…
2025 · its alternatives →
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MCPSafe▲6We've been scanning MCP (Model Context Protocol) servers to understand the security posture of the ecosystem. After 306 servers and 1,211 vulnerabilities, here's what we found: - 69 critical vulnerabilities - 32 servers using eval() on untrusted input - 31 SQL injection vulnerabilities - 32 servers with hardcoded API credentials 10.5% of servers have at least one critical vulnerability. MCP servers run with your permissions. AI agents trust them implicitly. A prompt injection can exploit them remotely. MCPSafe (https://mcpsafe.org) lets you scan before you connect. Free tier…
Feb 2026 · mcpsafe.org · its alternatives →
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Local security & compliance scanner for AI agents
Jul 2026 · safeclaude.net · its alternatives →
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VibeScan▲9Beta tool that runs OWASP/Nuclei/ZAP checks fast and prioritizes fixes; would love test runs on your staging domains and blunt feedback.
2025 · vibescan.co.kr · its alternatives →
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Find prompt injection holes in your AI agent. Free, 3 min
Aug 2026 · galeops.xyz · its alternatives →
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Hi HN, I'm one of the creators of HoundDog.ai (https://github.com/hounddogai/hounddog). We currently handle privacy scanning for Replit's 45M+ creators. We built HoundDog because privacy compliance is usually a choice between manual spreadsheets or reactive runtime scanning. While runtime tools are useful for monitoring, they only catch leaks after the code is live and the data has already moved. They can also miss code paths that aren't actively triggered in production. HoundDog traces sensitive data in code during development and helps catch risky flows (e.g., PII…
Feb 2026 · github.com · its alternatives →
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Security scanner for AI agents, MCP servers and agent skills. - snyk/agent-scan
May 2026 · github.com · its alternatives →
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Nullgaze▲3Scan any website for leaked secrets in seconds
Feb 2026 · nullgaze-ohm8.vercel.app · its alternatives →
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I'm a security engineer and started playing around with AI coding tools last year. I noticed a lot of basic security issues: exposed api keys, missing input sanitization, no rate limiting etc. So I built this to scan for them automatically.
Dec 2025 · vibeappscanner.com · its alternatives →
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A web tool to scan websites for common vulnerabilities
2025 · webscan.dheerajjha.com · its alternatives →
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AI pentester that finds what scanners miss
Mar 2026 · obsidianscan.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →