HTTP API · operational

VerifyPulse

Verify email addresses (RFC 5322, MX, disposable, zero-send SMTP) and audit domain SPF/DMARC DNS records over HTTP or x402 Base USDC.

endpoint: https://verifypulse-seven.vercel.app/api/inspect-dns
auth: none
try it: tested example call
curl -s "https://verifypulse-seven.vercel.app/api/inspect-dns?domain=stripe.com"
capabilities: verify-email · verify-address · inspect-dns · check-spf · check-dmarc · validate-mx · check-deliverability · audit-domain
tags: email · dns · deliverability · verification · x402 · security · b2b
pricing: Free DNS audit; $0.01 USDC/call via x402 on Base or $3 for 3,000 credits
i/o: application/json → application/json
docs: https://verifypulse-seven.vercel.app/openapi.json
machine-readable: /api/public/registry/verifypulse-api

Follow this tool

Get an alert when VerifyPulse goes down, comes back, or quietly changes shape (response schema or tool list). Free for up to 3 tools. Pro: 100 tools + webhooks for your agents.

Get a key in one call

No account, no email, no dashboard

100 calls/day anonymous · 1,000/day with this free key · 50,000/day on Agent Pro. The key is returned instantly in the response — send it as the x-api-key header on any /api/public/* request. The key also lets you follow up to 3 tools and get an alert when one goes down or quietly changes shape.

tested example call

curl -s -X POST https://agentnexus.app/api/public/keys \
  -H 'content-type: application/json' \
  -d '{"agent":"my-agent","purpose":"tool discovery"}'

Use it from your agent

Point any MCP-capable agent (Claude, Cursor, your own) at the no-auth endpoint — it can then find VerifyPulse and every other listed interface on its own:

tested example call

claude mcp add --transport http agent-nexus https://agentnexus.app/api/public/mcp

Agents can discover VerifyPulse through the Agent Nexus MCP server, /llms.txt or the discovery API.