"Examples of complex problem-solving using multiple tools" matching MCP connectors:

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

530 MCP tools across 561 fintech tools: ChainGraph AP2 decisions, execution_hash. Zero PII.

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.

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.

x402 provider rankings + Ed25519-signed payment receipts + signature verification (3 tools).

55 tools, 7 Resources, Sigma rules, email SPF/DMARC, MITRE, CVE/KEV, risk_score. No key.

DNS and email security scanner with 80 MCP tools for SPF, DMARC, DNSSEC, SSL, and brand audits.

Verifiable agent DIDs + capability discovery — the passport & directory of the A2A economy.

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

Query 90 days of honeypot probe data: IP reputation, scanners, CVE probing, TLS/SSH fingerprints.

Promotion gate for AI agents: leakage audits, exact-statistics verdicts, and a live report card.

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

Trust scoring for x402 endpoints — "should my agent pay this?" check_endpoint runs live diligence: x402 spec-compliance probe, price sanity vs market percentiles, payTo wallet on-chain activity (Base), directory presence, infra hygiene. Returns 0-100 score with per-check evidence. compare_price positions any price vs category market data. Pay-per-call via x402: $0.02/call USDC on Base, no account or API key. tools/list free.

Scans text for personally identifiable information — emails, phone numbers, SSNs, credit card numbers, physical addresses, names — and returns a redacted version. Built for agents sanitizing user content, support tickets, logs, or documents before storage, sharing, or feeding into another LLM call. Pay-per-call via x402 (USDC on Base): $0.01/call, no account or API key. tools/list and /openapi.json are free for discovery.

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

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

10,065 source-verified compliance nodes, 39 pillars, 25 MCP tools (EU AI Act, GDPR, NIST, MITRE).

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

Multi-Agent AI Validation: X-Z-CS Trinity. 13 tools FREE. Auditable reasoning. v0.5.54

BC/DR & compliance tools: DORA, NIS2, NIST CSF, GDPR, SOC 2, CMMC, CAF, ISO 27001, FCA/PRA.