# Services from shield.vainplex.dev on Zero

> shield.vainplex.dev serves 29 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/shield.vainplex.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/shield.vainplex.dev/health.json

## Services

- [ShieldAPI URL Safety Check](https://www.zero.xyz/c/shield-vainplex-dev-89abe772/llms.txt): $0.003/call via x402. Checks a URL for safety threats, HTTP reachability, redirects, and heuristic risk scoring
- [ShieldAPI Prompt Injection Detection](https://www.zero.xyz/c/shieldapi-prompt-injection-detection-b73c7a3d/llms.txt): $0.005/call via x402. Analyzes text for prompt injection attacks using 200+ detection patterns in under 100ms
- [ShieldAPI Domain Reputation Check](https://www.zero.xyz/c/shield-vainplex-dev-4871fe5b/llms.txt): $0.003/call via x402. Checks a domain's security reputation, DNS records, SSL validity, blacklist status, and risk score for agent security purposes
- [ShieldAPI Password Range Check](https://www.zero.xyz/c/shield-vainplex-dev-63de1ffd/llms.txt): $0.001/call via x402. Checks whether a password has been compromised using k-anonymity (first 5 chars of SHA-1 hash prefix lookup) against breach databases
- [ShieldAPI Domain Reputation Check](https://www.zero.xyz/c/shield-vainplex-dev-6f4835b1/llms.txt): $0.003/call via x402. Checks a domain name for security reputation, DNS records, SSL status, and blacklist presence to assess risk level for agent security decisions
- [ShieldAPI IP Reputation Check](https://www.zero.xyz/c/shield-vainplex-dev-c9245b28/llms.txt): $0.002/call via x402. Checks an IPv4 address against multiple DNS blocklists and returns risk score, TOR exit node status, and reverse DNS information
- [ShieldAPI URL Safety Check](https://www.zero.xyz/c/shield-vainplex-dev-bd126572/llms.txt): $0.003/call via x402. Checks a given URL for safety threats, malicious content, and security risks using security intelligence data
- [ShieldAPI Full Security Scan](https://www.zero.xyz/c/shield-vainplex-dev-6a66583d/llms.txt): $0.01/call via x402. Performs a comprehensive composite security scan on a domain, URL, IP, or email — combining DNS, SSL, blacklist, and risk checks into a single report
- [ShieldAPI AI Skill/Plugin Supply Chain Security Scanner](https://www.zero.xyz/c/shieldapi-ai-skill-plugin-supply-chain-security-scanner-e83a7e08/llms.txt): $0.02/call via x402. Scans the text of an AI skill or plugin for supply chain vulnerabilities, prompt injection risks, and malicious patterns before an agent installs or executes it
- [ShieldAPI Supply Chain Pre-Flight Check](https://www.zero.xyz/c/shield-vainplex-dev-515ef930/llms.txt): $0.01/call via x402. Checks a software package against supply chain security signals and returns a risk score and allow/block recommendation
- [ShieldAPI Password Range Check](https://www.zero.xyz/c/shield-vainplex-dev-5f12fb3c/llms.txt): $0.001/call via x402. Checks whether a password has appeared in known data breaches using k-anonymity (SHA-1 prefix lookup), without exposing the full password hash
- [ShieldAPI Prompt Injection Checker](https://www.zero.xyz/c/shieldapi-prompt-injection-checker-806d7130/llms.txt): $0.005/call via x402. Analyzes a text prompt for prompt injection attacks and returns a security intelligence assessment
- [ShieldAPI Full Security Scan](https://www.zero.xyz/c/shield-vainplex-dev-9a5bfa34/llms.txt): $0.01/call via x402. Performs a comprehensive composite security scan on a domain, URL, IP, or email — combining DNS, SSL, blacklist, and reputation checks into a single risk assessment
- [ShieldAPI Package Supply Chain Pre-Flight Check](https://www.zero.xyz/c/shield-vainplex-dev-cd1bfc5a/llms.txt): $0.01/call via x402. Checks a software package (by name, version, and ecosystem) for supply chain risks and returns a safety score and allow/block status
- [ShieldAPI IP Reputation Check](https://www.zero.xyz/c/shield-vainplex-dev-8a2c82bc/llms.txt): $0.002/call via x402. Checks an IPv4 address against multiple security blacklists and returns risk score, TOR exit node status, and reverse DNS
- [ShieldAPI Email Breach Check](https://www.zero.xyz/c/shield-vainplex-dev-e571c7e2/llms.txt): $0.005/call via x402. Checks an email address against known data breach databases to determine if it has been compromised
- [ShieldAPI Email Breach Check](https://www.zero.xyz/c/shield-vainplex-dev-bd28c770/llms.txt): $0.005/call via x402. Checks an email address against security intelligence databases to determine if it has appeared in known data breaches
- [ShieldAPI k-Anonymity Password Range Lookup](https://www.zero.xyz/c/shieldapi-k-anonymity-password-range-lookup-3e6e3ce3/llms.txt): $0.001/call via x402. Checks a SHA-1 password hash prefix against a breach database using k-anonymity, returning matching hash suffixes and breach counts (HIBP-compatible)
- [ShieldAPI – AI Skill/Plugin Supply Chain Security Scanner](https://www.zero.xyz/c/shieldapi-ai-skill-plugin-supply-chain-security-scanner-6ec41818/llms.txt): $0.02/call via x402. Scans AI skill or plugin text for supply chain security threats across 8 vulnerability categories
- [ShieldAPI Email Breach Exposure Check](https://www.zero.xyz/c/shieldapi-email-breach-exposure-check-61f8ecda/llms.txt): $0.005/call via x402. Checks whether a given email address has been exposed in known data breaches
- [ShieldAPI Password Breach Check](https://www.zero.xyz/c/shieldapi-password-breach-check-c667c27b/llms.txt): $0.001/call via x402. Checks a SHA-1 password hash against 900M+ breach records to determine if a password has been compromised
- [ShieldAPI MCP Server Trust Score](https://www.zero.xyz/c/shieldapi-mcp-server-trust-score-d09ef472/llms.txt): $0.02/call via x402. Checks the trust score of an MCP (Model Context Protocol) server endpoint before an AI agent connects to or calls it
- [ShieldAPI Prompt Safety Check](https://www.zero.xyz/c/shieldapi-prompt-safety-check-fa28b442/llms.txt): $0.005/call via x402. Analyzes a text prompt for safety risks, policy violations, and prompt injection attempts before it is processed or acted upon.
- [ShieldAPI MCP Server Trust Score](https://www.zero.xyz/c/shieldapi-mcp-server-trust-score-44d1faac/llms.txt): $0.02/call via x402. Returns a trust score for a given MCP server endpoint URL to help agents assess safety before connecting
- [ShieldAPI Full Security Scan](https://www.zero.xyz/c/shieldapi-full-security-scan-a2fac5d0/llms.txt): $0.01/call via x402. Runs all security checks combined (password breach, IP reputation, domain reputation, URL safety, email exposure) against a SHA-1 password hash in a single call
- [ShieldAPI – CDP Skill Security Scanner](https://www.zero.xyz/c/shieldapi-cdp-skill-security-scanner-fde64036/llms.txt): $0.02/call via x402. Scans a CDP skill or plugin definition for vulnerabilities and returns skill-related security insights.
- [ShieldAPI – URL Safety & Phishing Detection](https://www.zero.xyz/c/shieldapi-url-safety-phishing-detection-08c5bcb7/llms.txt): $0.003/call via x402. Checks a URL for safety, phishing risk, and malicious content using real-time security intelligence
- [ShieldAPI Domain Reputation Check](https://www.zero.xyz/c/shieldapi-domain-reputation-check-b4ccfac4/llms.txt): $0.003/call via x402. Checks a domain name against security intelligence sources to assess its reputation and detect threats
- [ShieldAPI – IP Reputation & Blacklist Check](https://www.zero.xyz/c/shieldapi-ip-reputation-blacklist-check-152ddbb1/llms.txt): $0.002/call via x402. Checks an IP address against real-time reputation databases and blacklists to determine if it is malicious, suspicious, or safe

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)