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Lookproof SPF Record Analyzer
x402
Lookproof SPF Record Analyzer is a paid API for AI agents from api.lookproof.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-31).
Parses and evaluates a domain's SPF record, tracing the full include/redirect tree, validating qualifiers, and checking against the RFC 7208 10-lookup limit with coded diagnostic findings.
Price / call$0.01
Success—
StatusUnknown
How this service works
Check SPF, DMARC, DKIM, MTA-STS, DNSSEC and more, with results that explain what was found and why. Free browser checks and a pay-per-request API with x402.
Output
Returns the parsed SPF record for the domain including the full include and redirect tree, each mechanism with its qualifier (pass, fail, softfail, neutral), a count of DNS lookups consumed, whether the 10-lookup RFC 7208 limit is reached or exceeded, and coded diagnostic findings explaining any validity issues or failures.
Example use cases
Diagnosing SPF failures for a SaaS sender
“Emails from our Salesforce account are landing in spam and failing SPF — can you analyze the SPF record for salesforce.com and tell me what's wrong or what qualifiers are misconfigured?”
Pre-flight check before adding a new ESP
“We're about to add SendGrid as an email provider and need to add their include to our SPF record for acme.com — can you check how many DNS lookups we're already at and whether adding one more would exceed the RFC 7208 limit?”
Auditing SPF compliance for a company domain
“I need to audit the SPF setup for hubspot.com — show me the full include and redirect tree, the qualifiers on each mechanism, and flag any RFC 7208 violations or findings.”
Technical details
Endpoint
GEThttps://api.lookproof.dev/v1/mail/spf?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to deeply inspect a domain's SPF configuration beyond a simple pass/fail — specifically when debugging why a particular mail sender fails SPF, when checking whether adding another include would push over the 10-lookup RFC 7208 limit, or when you need the full include/redirect tree with per-mechanism qualifiers and coded diagnostic findings. Prefer this over generic DNS lookup endpoints when the goal is SPF-specific validation and compliance checking.
Side effects
- Domain has no SPF record (TXT lookup returns nothing relevant)
- Domain does not exist or fails DNS resolution
- SPF record is syntactically malformed and cannot be parsed
- Lookup limit exceeded during tree traversal causing evaluation to abort
- Multiple SPF records found for the same domain (RFC violation)
- Network timeout resolving include or redirect targets
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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