Email Domain MX SPF DMARC Inspector
Check email domain SPF, DMARC and MX records, including null MX and the published DMARC policy. Diagnose domain authentication setup. Does not verify mailbox existence, SMTP delivery or a person.
1 route settlement-verified · $0.005 USDC/request · 1 endpoint · Verification · base network · x402 protocol
Verified routes
POST /api/microapi/email-domain· $0.005 · Verified with a $0.005 test payment on 13 Nov 2026 · receipt
Other routes are unverified.
Networks: Base (settlement-verified)
Discovery is free. Agents search the catalogue here. Payment happens on the listing 402, not on PayAPI.
url https://payapi.market/mcpListing facts
- Provider
- Quantum Bear Systems
- Hosted at
quantumbears.is- Category
- Verification
- Price
- $0.005 USDC per request
- Payment networks
- Base
- Settlement-verified
- 1 route, last checked 2026-11-13
- Listed on PayAPI Market
- 2026-11-13
Try Email Domain MX SPF DMARC Inspector
Call a verified route without paying first. The server should answer HTTP 402 Payment Required with the price, the USDC asset, the network and the wallet to pay. An x402 client pays that amount on Base and retries with the payment header.
curl -i -X POST "https://quantumbears.is/api/microapi/email-domain"About this API
Email Domain MX SPF DMARC Inspector is listed in the Verification category with pricing at $0.005 USDC/request. One route has been settlement-verified by PayAPI Market on 2026-11-13. View receipt on Basescan.
Payments settle on base in USDC via the x402 protocol. AI agents discover this API through the PayAPI Market MCP server and pay per request without API keys or accounts.
This API exposes 1 endpoint.
Add this badge to your README
Paste this on your site. The link points at this listing. Listing is free and PayAPI takes 0% of each job.
Markdown
[](https://payapi.market/api/email-domain-mx-spf-dmarc-inspector)
HTML
<a href="https://payapi.market/api/email-domain-mx-spf-dmarc-inspector"><img src="https://payapi.market/badge/email-domain-mx-spf-dmarc-inspector.svg" alt="Settlement-verified on PayAPI Market" height="20"></a>
Questions about this API
What does Email Domain MX SPF DMARC Inspector do?
Check email domain SPF, DMARC and MX records, including null MX and the published DMARC policy. Diagnose domain authentication setup. Does not verify mailbox existence, SMTP delivery or a person. It is provided by Quantum Bear Systems.
How much does Email Domain MX SPF DMARC Inspector cost?
Email Domain MX SPF DMARC Inspector is priced at $0.005 USDC per request, paid per call with no subscription. Verified with a $0.005 test payment on 13 Nov 2026. The exact amount for each call is in the HTTP 402 response before any money moves.
Do I need an API key or account to use Email Domain MX SPF DMARC Inspector?
No. Email Domain MX SPF DMARC Inspector uses the x402 protocol, so an agent pays per request in USDC on Base and gets the response, with no API key, account or signup.
Has Email Domain MX SPF DMARC Inspector been verified?
Yes, 1 route. PayAPI Market paid for a real call from its own wallet, received real data back and recorded the USDC settlement on-chain, most recently on 2026-11-13.
How does an AI agent find Email Domain MX SPF DMARC Inspector?
Through the free PayAPI Market MCP server at https://payapi.market/mcp, using search_apis or get_api, or over plain HTTP at https://payapi.market/agent/search. Discovery is free; the agent pays the provider directly on the listing's own 402.
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