SPF check

agent402.tools · x402

Fetch and validate a domain's SPF record (RFC 7208). Parses mechanisms (ip4/ip6/include/a/mx/all), counts DNS lookups against the famous 10-lookup limit, and flags the qualifier on `all` (-/fail, ~/softfail, ?/neutral). The first stop when an email is hitting the spam folder.

Name and description as published by x402 Bazaar

Live

Last successful check: 25 Oct 2026, 22:07 UTC.

answered, last 24 hours: 100%
answered, last 30 days: 100%

How addrbook checks →

Connect

https://agent402.tools/api/spf-check

x402: an unpaid request gets a 402 with the price and pay-to wallet. addrbook never pays.

Who's behind it

Listed by: x402 Bazaarlast seen 25 Oct, 19:51 UTC
Wallets named: 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0named by x402 Bazaar
Listed since: 25 Oct 2026, 17:52 UTC

Checks by endpoint

Host	Protocol	State	Last checked (UTC)	Last answered (UTC)	24 hours	30 days	Tools
agent402.tools	x402	Live	25 Oct, 22:07	25 Oct, 22:07	100%	100%	—

Also listed as

Other entries that share an endpoint with this one.

agent402.tools