"Papers With Code" matching MCP connectors:

~Alter is the identity layer agents query before they transact, answering who is actually on the other end. 11 of the 42 tools work with no account and no key. Call them now and see what comes back. Two calls plus a small proof of work gives your agent its own ~handle. Reads settle in USDC over x402 and 75% goes to the person read. Being known.

Scan code for quantum-vulnerable cryptography and get NIST post-quantum migration guidance.

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.

Scan public websites for privacy, cookie, tracker, consent, policy, and disclosure risk signals. Start instantly with zero-auth Light mode—no account or API key required.

Authorize x402 payments before signing with request-bound, signed safety decisions.

Evidence-backed x402 web verification for AI agents, with auditable decisions for every condition.

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

DNS and email security scanner with 76 MCP tools for SPF, DMARC, DNSSEC, SSL, and brand audits.

Inventory and audit your agent fleet over MCP: audit_mcp_config returns risk-ranked findings with a 0-100 posture score, scope_check ranks tool-manifest blast radius, audit_skill_file and injection_scan screen untrusted skill files and text, and inventory_report builds a governance inventory with risk tiers. All analysis is deterministic and local to the request.

Query Microsoft Patch Tuesday security updates (MSRC) with EPSS and CISA KEV enrichment

Static MCP manifest and tool-policy security preflight with signed input-redacted receipts

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

MCP-native Trust Infrastructure for AI Agents. Persistent encrypted memory with Trust Quotient.

Pay-per-call cybersecurity for AI agents: vuln scans, threat intel, compliance, code security.

2,029 DISA STIG rules with official check/fix text, CCI mappings, and .ckl checklist export.

Keep AI answers fresh with free source previews, scheduled monitoring, evidence history, and alerts.

Free SPF, DKIM, DMARC, MX deliverability check with graded shareable reports, plus referral terms

Deterministic JSON checks with signed evidence and x402-paid execution

Scan a website for vulnerabilities: OWASP Top 10, CVEs, SSL, headers - with plain-English fixes

EU AI Act Art-14 runtime oversight: allow / flag / gate-to-human on an agent action, with receipt.