"Using Server-Sent Events (SSE) in the Terminal" matching MCP connectors:

Hosted, OAuth-gated endpoint for quantakrypto's post-quantum crypto tools: scan code for quantum-vulnerable cryptography (RSA/ECDH/ECDSA/DH) and get NIST ML-KEM/ML-DSA/SLH-DSA migration guidance over authenticated HTTP — nothing to install. Sign-in required (Google/GitHub/email). Same tools as the open-source @quantakrypto/mcp server; source at github.com/quantakrypto/pqc-tools.

Identity infrastructure for the AI economy. Confirms if someone is known; returns inferred traits.

Read-only MCP server for turva.dev, an agent-readiness audit and advisory service.

Public data intelligence for AI agents — CVE, compliance, patents, contracts, domains.

Governance firewall for autonomous AI agents. Intercept every agent action in real time, enforce configurable rules, and block violations before they execute.

The PropelAuth Integration MCP Server helps you and your favorite AI agent integrate PropelAuth as quickly and easily as possible into your project. Whether you're integrating PropelAuth into your Next.js project or your FastAPI backend, the Integration MCP Server will ensure your AI agent has the best context possible for a successful integration.

Per-transaction crypto trade validator for AI agents. Returns deterministic PROCEED / CAUTION / BLOCK verdicts using WaveGuard anomaly detection, history checks, and rug-pull risk analysis.

Viridis Verified: wrap any MCP server with tamper-evident delivery receipts + metered fees.

Zero-install remote MCP server for proof-of-existence file attestation.

MCP server for detecting and redacting PII (Personally Identifiable Information) in PDF documents.

MCP server for MaxMind minFraud — score transactions for fraud risk from your AI assistant.

IOCs (URLs, domains, IPs, hashes) shared by the infosec community on X/Twitter. No auth, CC0.

Validate whether an IP address belongs to PetalBot. Remote MCP server exposing a validate_ip tool.

Validate whether an IP address belongs to YandexBot. Remote MCP server exposing a validate_ip tool.

Pre-flight check for AI coding agents: hallucinated packages + hardcoded secrets. Free, no account.

Query OSV.dev for package vulnerabilities and batch-audit dependency lists via MCP.

Validate whether an IP address belongs to Applebot. Remote MCP server exposing a validate_ip tool.

Pre-signature x402 payment-risk oracle. AI agents call forecast_payment before paying a counterparty and get a GO / HOLD / STOP verdict from settlement reputation, price-anomaly (quoted vs the payee's own median), and OFAC sanctions screening — plus a third-party-verifiable Ed25519 signed receipt. Verdict only; never takes custody. Free under $10 at risk; returns an x402 payment challenge over that.

MCP server teaching AI agents to implement TideCloak: auth, E2EE, IGA, security analysis

Pre-connect trust checks for AI agents and MCP servers using HVTracker's public trust registry.