7 APIs · 18 endpoints · Base network · x402 protocol
Is this vendor down? Pay-per-call current status and recent incidents for 1,400+ SaaS/cloud vendors, read live from 60SecMonitor (isitdownapi.com). Batch status for up to 25 vendors, and an MCP server at /mcp. Data: x402-list.com (CC BY 4.0)
3 endpoints · $0.01–$0.05Pay-per-call website checks for agents: TLS certificate (from CT logs), DNS, email authentication (SPF/DMARC/DKIM/MTA-STS), HTTP security headers, domain expiry, a site-health bundle, an A-F domain security grade, and a $2 full site audit report with a prioritized fix list, a 2-cent domain threat check (IOC feed + ransomware claims), a 50-cent bulk IOC check of 100 domains/IPs, and a 30-cent 30-day watch of 25 domains with webhook threat alerts. Also available as an MCP server at /mcp. Data: x402-list.com (CC BY 4.0) Credit: 402 Index (MIT)
2 endpoints · $0.04–$0.3Has a ransomware group claimed this company or domain? Is this domain or IP listed as attacker infrastructure? What do we know about this CVE or this ransomware gang? Pay-per-call: a 1-cent domain/IPv4 threat-indicator check (25 cents for 100), CVE intel with exploits, AI attack flow and D3FEND defenses (3 cents, 50 for 50 cents), ransomware group intel (5 cents), plus leak-site claim lookups, newest claims (optionally per group), group profiles, a batch check of up to 25 vendor domains, a $0.50 bulk check of up to 100 vendor domains or names, a $0.30 prepaid 30-day watch of up to 25 vendors ( Data: x402-list.com (CC BY 4.0)
1 endpoint · $0.3–$0.3Is this vendor down? Pay-per-call current status and recent incidents for 1,700+ SaaS/cloud vendors, read live from PulseWatch (pulsewatch.us). Also an MCP server at /mcp. Data: x402-list.com (CC BY 4.0) Credit: 402 Index (MIT)
3 endpoints · $0.01–$0.05Free DMARC, SPF, DKIM and MX checks for any domain, from mailsecuritytools.com. Paid (x402 USDC on Base): a $0.01 graded email security score, a $0.01 email address check, a $0.50 bulk score of up to 100 domains, a $0.30 prepaid 30-day watch of up to 25 domains (webhook POST when SPF, DKIM, DMARC or MX changes or breaks), and a $1 email security fix plan with the exact DNS records to publish. MCP server at /mcp. Daily monitoring: InboxGuards (inboxguards.com). Credit: 402 Index (MIT)
1 endpoint · $0.04–$0.04Invoice tools for agents, paid per call in USDC over x402: invoice PDF, payment reminder drafts, late-fee and payment-terms math, timesheet to invoice. No accounts, no API keys. Also an MCP server at /mcp. Data: x402-list.com (CC BY 4.0)
6 endpoints · $0.01–$1AI answer-engine visibility for any website: a $0.05 deep AEO scan (up to 10 pages, 100-point score, fixes, ready-to-paste llms.txt/robots.txt/JSON-LD), a $9 report that asks ChatGPT, Microsoft Copilot, Gemini, Claude, Grok, Google AI Overviews, Google AI Mode, Perplexity, Meta AI, DeepSeek, Qwen, Mistral, GLM, MiniMax, Exa Answer and You.com five category questions, 3 times each (mention rate, citations, competitor share, cited sources), and $19 prepaid weekly tracking (4 runs). MCP at /mcp. Free HTML checks at https://aeoinspector.com. Data: x402-list.com (CC BY 4.0)
2 endpoints · $0.5–$19aeoinspector.com, api.isitdownapi.com, api.mailsecuritytools.com, api.orioncmd.com, api.paidpilot.io and 2 moreUnclaimed has 7 live APIs on PayAPI Market with 18 endpoints in total, in Tools, Intelligence: 60SecMonitor Status API, OrionCMD Checks, Dragons Eye Lookup, PulseWatch Status API, Mail Security Tools API, and 2 more.
Not yet. Unclaimed's listings are live and answer an x402 payment challenge, but PayAPI Market has not paid for a call to them, so none carries a settlement-verified badge.
Per request, in USDC, over the x402 protocol. An agent calls the endpoint, receives HTTP 402 with the price and wallet, pays and retries. There is no API key, account or subscription, and Unclaimed keeps 100% of each payment.