"Gathering Context from an Ubuntu Server" 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.

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.

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.

Adversarial verification for AI agents - pay an independent skeptic per verdict in USDC via x402.

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

Trust verdict for an x402 payment endpoint: health, 402 handshake, price, proceed/caution/avoid.

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

Personalised developer security learning pathways from SecDim's challenges and courses.

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

Public MCP digital twin with synthetic systems and an agent firewall. No customer data.

Detects and redacts PII (emails, phones, SSNs, names, addresses) from text. $0.02/call via x402.

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

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

Vendor status pages, TLS cert inspection, DNS propagation checks, and incident-response playbooks.

Remote MCP server: 19 domain-hygiene and email-auth tools (DNS, SPF, DMARC, DKIM, TLS).

Hosted governance layer for LLM agents. Seven mechanically-enforced rules plus audit-chain verification, preflight file protection, session handoff, and an emergency kill switch.