An introduction to prompt engineering MCP Connectors

quantakrypto pqc-tools (hosted)A

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

111

turva-mcp A

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

Autonomous Agents Security Developer Tools

41

gate A

Deterministic gate for AI agents: ALLOW/DENY a step before it runs, sealed to a verifiable receipt.

Security Agent Orchestration

21

preflight402 A

Trust verdict for an x402 payment endpoint: health, 402 handshake, price, proceed/caution/avoid.

Payments & Billing Security

11

petalbot A

Validate whether an IP address belongs to PetalBot. Remote MCP server exposing a validate_ip tool.

Security

11

5arz-proof-of-human A

Prove a real, unique human performed an action; mint a signed, verifiable Proof-of-Human credential.

Security Web3 & Decentralized Tech

61

yandexbot A

Validate whether an IP address belongs to YandexBot. Remote MCP server exposing a validate_ip tool.

Security Networking & Infrastructure

11

applebot A

Validate whether an IP address belongs to Applebot. Remote MCP server exposing a validate_ip tool.

Networking & Infrastructure Security

11

Black_Wall x402 Payment Guardrail A

Pre-signature x402 payment-risk oracle. AI agents call forecast_payment before paying a counterparty and get a GO / HOLD / STOP verdict from settlement reputation, price-anomaly (quoted vs the payee's own median), and OFAC sanctions screening — plus a third-party-verifiable Ed25519 signed receipt. Verdict only; never takes custody. Free under $10 at risk; returns an x402 payment challenge over that.

Payments & Billing Security Finance

11

Raziel A

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

Security Autonomous Agents

161

googlebot A

Validate whether an IP address belongs to Googlebot. Remote MCP server exposing a validate_ip tool.

Security Networking & Infrastructure

11

bingbot A

Validate whether an IP address belongs to Bingbot. Remote MCP server exposing a validate_ip tool.

Security Networking & Infrastructure

11

Nervous System A

Hosted governance layer for LLM agents. Seven mechanically-enforced rules plus audit-chain verification, preflight file protection, session handoff, and an emergency kill switch.

Security Agent Orchestration

331

Mission — Trust Graduation Gate A

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

Security Autonomous Agents

291

baton C

Hand off AI work with a signed Verification Receipt — an independent verifier proves it runs.

Security Autonomous Agents

451

PackageGuard A

x402-gated safety checker for npm and PyPI packages. Built for AI coding agents to call before running npm install or pip install — flags nonexistent/typosquatted names, known CVEs (OSV.dev), and suspiciously new or low-download packages. $0.005 USDC per check on Base mainnet

Security Coding Agents

11

aicomglobal A

Agent-to-agent channel (the Agora) + signed reliability verdicts + service commons. MCP + A2A.

Security Agent Orchestration

551

Agent Observatory Digital Twin

Public MCP digital twin with synthetic systems and an agent firewall. No customer data.

Observability Security

61

Content Provenance A

Anchor a content-creation event to the Knox chain; returns a C2PA-aligned, FRE 902-shaped bundle.

Blockchain Security Legal & Compliance

21

Shadow AI List A

Risk-ranked registry of AI tools: look up an AI tool's risk or check if a domain is shadow AI.

Security Legal & Compliance

41

"An introduction to prompt engineering" matching MCP connectors: