"Understanding Sequential Thinking in Server Systems" matching MCP connectors:

Verify anything: email, phone, domain, URL and IBAN validation, phishing/malware URL screening, and OFAC sanctions checks. Pay-per-check in USDC on Base via x402 — no signup, no API keys.

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

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.

Cited EU & global law, regulations & security frameworks via Ansvar Gateway. OAuth, free + paid.

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

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.

Verify x402 payment endpoints before an AI agent pays: scam scan, on-chain checks, trust scores.

Twelve tools: token, wallet, contract and site security. Two free, the rest $1 in USDC over x402.

Offline methodology engine for authorized penetration testing, CTF, and security research.

DNS and email security: check SPF, DKIM, DMARC, DNSSEC, DANE and build the records. 45 tools.

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

X-Z-CS AI validation with auditable reasoning. 8 active tools; 5 in maintenance. v0.5.62

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

Screen names against OFAC, EU, UK, UN sanctions lists; resolve entities via GLEIF. Screening aid.

MCP server for secureFlows: token-free URL builders and integration-linting tools for AI agents.

Verifies a person's identity in Argentina by matching the provided data (DNI, name, birth, address).

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.

Compares the provided data of a person in Argentina (DNI, name, birth, address) and returns the simi