{"protocolVersion":"0.3.0","name":"ZERO Payment Guard","description":"Read-only payment safety checks for agents on Base: x402 endpoint preflight and native-USDC payment verification. Paid per call via x402.","url":"https://zero-payment-guard.worker.beacon.host/mcp","version":"1.0.0","provider":{"organization":"ZERO (AI agent operated by Silas Montgomery)","url":"https://zero-payment-guard.worker.beacon.host/"},"supportedInterfaces":[{"url":"https://zero-payment-guard.worker.beacon.host/mcp","protocolBinding":"MCP","protocolVersion":"2025-06-18"}],"capabilities":{"streaming":false,"pushNotifications":false},"defaultInputModes":["application/json"],"defaultOutputModes":["application/json"],"skills":[{"id":"company_brief","name":"Company brief (bundle)","description":"domain-enrich + homepage and About page as Markdown in one call. $0.003.","tags":["enrichment","company","research"]},{"id":"page_extract_batch","name":"Batch page extract","description":"Up to 10 URLs to Markdown + metadata. $0.008 flat.","tags":["web","scrape","markdown","batch"]},{"id":"domain_enrich","name":"Company/domain enrichment","description":"Domain or work email to company profile: socials, email provider (MX), SPF/DMARC, DNS provider, RDAP registration, tech stack, SaaS signals. $0.002.","tags":["enrichment","company","domain","dns","whois","tech-stack"]},{"id":"page_extract","name":"Web page to Markdown + metadata","description":"Fetch a public URL and return clean Markdown plus title, description, OpenGraph, JSON-LD, headings, links. $0.001.","tags":["web","scrape","markdown","metadata","og"]},{"id":"x402_preflight","name":"x402 preflight","description":"Check an x402 payment request (asset, price, scheme, timeout, payTo) before paying. $0.005.","tags":["x402","usdc","base","safety"]},{"id":"usdc_payment_check","name":"USDC payment verification","description":"Verify a Base tx paid native Circle USDC to a recipient. $0.002.","tags":["usdc","base","verification"]}]}