"Using web search functionality in Claude desktop application" matching MCP connectors:

DNS Doctor: scan and fix email authentication (SPF, DMARC, DKIM, MX, blacklists). Validated fixes.

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.

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

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.

Breach intelligence API: email search, domain monitoring, passwords and stealer logs.

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

CVE search, vulnerability database, EPSS exploit prediction, KEV, IP reputation & threat feed.

Search a directory of SOC 2 audit and compliance firms; read GRC migration guides. Read-only.

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

Thor Henning Hetland's signed knowledge web: plan, load and verify ed25519-signed KCP units.

Validate ClaudeBot and Claude-SearchBot IP addresses. Remote MCP validate_ip tool.

Trust Graduation gate: Claude can do real work once Mission decides what it is allowed to do.

Search vetted privacy tools, read guides & glossary, and run free privacy diagnostics.

SSL/TLS scanning, free Let's Encrypt issuance, and certificate-expiry monitoring.

Human-in-the-loop approval for agent actions, with verifiable action-bound receipts.

Email OS for agents - real-inbox search, triage, commitments, and a verifiable BEC hard-stop.

Free no-account URL security scan: 0-100 Launch Readiness score for any live site in ~15 seconds.

37 paid x402 MCP tools for OSINT, prediction markets, web intel, and agent security on Base USDC.

Cryptographic proof of wallet ownership in two steps, with no keys and no custody.

Improve security writing, score it against rubrics, plan IR, CTI, vuln, and product strategy.