How to allow an LLM to ask questions to a user MCP Connectors

Read-only breach intel, full history 2007-today: reports THAT an org was breached, never the data.

72

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.

Code Analysis Security

112

BlockchainAnalysis A

Is a wallet frozen by Tether/Circle? Free freeze checks + full history, screening & KYT. 9 chains.

Cryptocurrency Blockchain Security

93

Sentinel A

Pay-per-call safety checks for AI agents: screen a crypto address or URL before you transact.

Security Blockchain Cryptocurrency

22

turva-mcp A

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

Autonomous Agents Security Developer Tools

42

PropelAuth Integration MCP Server A

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.

Developer Tools Security Autonomous Agents

112

FactGrid (Renamed to FactReason)A

Renamed to FactReason. Now published as io.github.factreason/factreason — please use that entry.

Documentation Access Developer Tools Security

101

pulsefeed-x402 A

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

Blockchain Payments & Billing Security

111

Second Opinion A

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

Security Cryptocurrency AI & Machine Learning

62

DCL Trust Oracle — AI/LLM Output Audit (x402 MCP)A

AI/LLM agent output audit MCP: policy eval, tamper-evident chain, AI safety, x402 USDC on Base.

Security Observability Payments & Billing

1811

monitor A

Check if an MCP server tool changed or hides injection patterns before you trust it.

Security Penetration Testing Monitoring

31

Raziel A

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

Security Autonomous Agents

182

crx-permission-risk A

Score the privilege a Chrome MV3 extension takes from its manifest, and diff permission sets.

Security Code Analysis

31

agent-context-api A

Free MCP context preflight with local redaction and a paid HTTP upgrade.

AI & Machine Learning Security Agent Orchestration

11

VITNA — Agent Compliance Preflight A

Pre-action allow/deny for AI agents. 24 statutes, 13 jurisdictions: EU AI Act, GDPR, DPDP.

Legal & Compliance Security Autonomous Agents

221

authenticated-mcp-agent A

JWT-gated LLM gateway: authenticate (bcrypt/JWT), then run a LangChain-on-Vertex Gemini completion.

AI & Machine Learning Security Cloud Platforms

121

AgenticRail Gate - sequence enforcement and verifiable audit receipts for AI agent compliance A

Deterministic runtime enforcement of step order for AI agents: ALLOW/DENY before a step runs.

Security Agent Orchestration

22

pkg-oracle — Dependency Trust Oracle A

Pay-per-call dependency trust oracle: verifies npm/PyPI packages before an AI agent installs them.

Developer Tools Security

11

ScanLabsAI Security Scanner A

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

Penetration Testing Security

81

skimguard A

Ask whether a location has recent credit-card-skimmer detections, from a consumer sensor network.

Security Location Services Search

171

"How to allow an LLM to ask questions to a user" matching MCP connectors: