
Wallarm
Metlo API Security
PromptGuard
SecureStack
API security risk scoring platform, Instant API & AI security scan, no setup required.

The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.

Website, pricing, platforms and company facts side by side.
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| Website | middlebrick.com | diffyn.com |
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In their own words, as submitted to SaaSHub.


middleBrickAPI Security Risk Scoring Platform middleBrick scans any API endpoint and returns a security risk score (A+ through F) with actionable findings — no agents, no config, no credentials required. How it works Submit a URL or OpenAPI spec. middleBrick runs 12+ security checks in parallel...
No description of Diffyn yet.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
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Overall verdict
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The Ultimate Prompt Tool for Creators – Visualize & Organize with Diffyn
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing middleBrick and Diffyn.
middleBrick's answer
middleBrick assigns a quantitative risk score (0-100) to any API in seconds, not weeks. It covers OWASP API Top 10, GraphQL, and LLM/AI-specific security checks in a single scan. It integrates directly into developer workflows via CLI, GitHub Action, and MCP server for AI assistants — no sales calls, no setup meetings.
Diffyn's answer:
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
middleBrick's answer
Most API security tools require enterprise contracts, complex onboarding, or inline proxies. middleBrick is fully self-service: scan any API endpoint in minutes even with a free account.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
Diffyn's answer:
React, Next.js, POSTGRESQL
middleBrick's answer
DevSecOps engineers, API developers, and security teams at startups and scale-ups who need to test their APIs for vulnerabilities without long procurement cycles. Also teams building AI/LLM-powered products who need to secure their model-facing APIs.
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
Diffyn's answer:
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
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