feat: add RelayShield security intelligence plugin

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RelayShield Security Intelligence
Adds a security intelligence plugin for Bankr agents — wallet risk scoring, breach detection, infostealer malware detection, and URL phishing checks before executing transactions.

Tools
Tool Endpoint Use case
relayshield_check_wallet POST /v1/wallet Score a wallet for sanctions, darknet, mixer exposure before sending funds
relayshield_check_breach POST /v1/breach Check an email address against known breach databases
relayshield_check_infostealer POST /v1/infostealer Near-real-time device compromise detection via dark web infostealer logs
relayshield_scan_url POST /v1/scan/url Scan a DeFi protocol, airdrop, or mint URL for phishing/malware
Setup
Get a free API key at rapidapi.com/relayshield/relayshield-security-intelligence
Set RELAYSHIELD_API_KEY in your environment
Build: cd relayshield/mcp-server && npm install && npm run build
Environment variables
Variable Required Description
RELAYSHIELD_API_KEY Yes RapidAPI subscription key
RELAYSHIELD_API_URL No Override API base URL (default: RapidAPI endpoint)
Why this fits Bankr
Bankr users executing trades and swaps via Telegram, X, and Farcaster are prime targets for SIM swap attacks, wallet drainers, and phishing links shared in trading groups. This plugin lets agents run a security check before executing — block a sanctioned wallet, flag a phishing URL, or surface a compromised email — without leaving the Bankr flow.

x402 PAYG is also live on Base and Solana for agent-native payment if preferred over an API key subscription.