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Probe runs 44 automated compliance and security checks on any API endpoint in under 5 seconds.
Built for AI agent developers and API providers who need to verify trust, security, and regulatory readiness before integration โ or before an agent makes its first payment.
Compliance & Regulatory - EU AI Act Article 14 โ human oversight signals - FATF Travel Rule readiness - Terms of Service and Privacy Policy endpoint detection - MiCA-relevant metadata checks
Agent Infrastructure - x402 payment protocol support - ERC-8004 on-chain agent identity verification - MCP server discovery - agent.json and Google A2A protocol detection
Security & Trust - SSL/TLS configuration and certificate health - DNSSEC, CAA, DMARC/SPF email authentication - Authentication maturity (OAuth2, OIDC, API keys) - Content-Type, CORS, and security headers
API Standards - Versioning and deprecation (Sunset headers) - Rate limiting and error handling - Response format consistency
How it works: - Instant audit โ no signup, no API key - Results in under 5 seconds - Pass/fail for each of the 44 checks - Overall compliance score (0-100) - Public leaderboard ranking 200+ APIs - JSON API for CI/CD pipelines - Free tier available
In an economy where agents choose which APIs to trust and pay, Probe is the credit check that runs before the first transaction.
ExpressJS GetProbe.xyzGetProbe.xyz's answer:
Probe is the only tool that checks AI agent-specific protocols like x402 payment headers, ERC-8004 on-chain identity, and EU AI Act Article 14 human oversight signals โ alongside traditional security checks like SSL/TLS, DNSSEC, and DMARC. No other compliance scanner covers the AI agent economy stack.
GetProbe.xyz's answer:
Most compliance tools focus on GDPR or generic web security. Probe covers 32 checks across both traditional security AND emerging AI agent protocols (x402, MCP, agent.json, Google A2A). It runs in under 5 seconds, requires no signup, and provides a public leaderboard so you can benchmark against 200+ APIs instantly.
GetProbe.xyz's answer:
AI agent developers, API providers, DevOps engineers, and compliance teams who need to verify that APIs meet security, trust, and regulatory standards before integration. Especially relevant for teams building in the x402/MCP/A2A agent economy.
GetProbe.xyz's answer:
We built Probe because AI agents are starting to pay for and consume APIs autonomously โ but there was no way to verify if an API is trustworthy before an agent sends money to it. Probe started as an internal tool at AsterPay to audit x402-compatible APIs, then grew into a standalone compliance platform covering 32 checks across security, identity, and regulation.
GetProbe.xyz's answer:
Cloudflare Pages & Pages Functions (serverless edge), Supabase (PostgreSQL), vanilla JavaScript (zero framework frontend), DNS-over-HTTPS for DNSSEC/DMARC checks, Certificate Transparency logs for SSL analysis, and on-chain RPC calls for ERC-8004 verification.
GetProbe.xyz's answer:
Based on our record, ExpressJS seems to be more popular. It has been mentiond 493 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Backend: Node.js & Express for file handling and metadata extraction. - Source: dev.to / 2 months ago
Casbin provides an external policy engine if your permission model grows complex enough that a centralized JS function becomes hard to maintain. Open Policy Agent serves the same purpose for multi-service architectures. Node.js and Express.js documentation cover the middleware pattern in detail. - Source: dev.to / 3 months ago
Many REST frameworks also ship with limited security controls enabled by default. Express.js , a minimal web framework, does not include rate limiting or input validation out of the box and relies on middleware for these concerns. Django REST Framework includes throttling features, but they are not enabled by default. - Source: dev.to / 3 months ago
Nearly every server-side web framework uses some version of MVC. Django calls it MTV (Model-Template-View), Rails follows classic MVC, and Express.js gives you the building blocks to implement your own version. - Source: dev.to / 3 months ago
For this guide, you will use the authentication proxy approach with Express. This gives you full control over authentication logic and RBAC. It also integrates well with the Descope MCP Express SDK, which is designed to allow you to easily add MCP specification-compliant authorization to your MCP server. The authentication proxy sits between clients and the MCP server, and validates every request before forwarding... - Source: dev.to / 3 months ago
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