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SPF Lookup Budget Estimator
x402
SPF Lookup Budget Estimator is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).
Counts DNS lookup mechanisms in an SPF record to estimate whether a domain's SPF policy is within the 10-lookup limit, as a static analysis for security review.
Price / call$0.01
Success—
StatusUnknown
How this service works
SPF lookup budget estimate for Security review: Count common DNS lookup mechanisms in an SPF policy; this is a static estimate. DNS data only; does not send email or verify that an inbox exists.
Output
Returns a static count of DNS lookup mechanisms (such as include, a, mx, ptr, exists) found in the domain's SPF record, giving an estimate of how much of the 10-lookup budget is consumed. No live DNS resolution chain is followed; this is a syntactic/structural count.
Example use cases
Pre-deployment SPF audit
“Before we go live with our new email setup, can you check how many DNS lookups the SPF record for mycompany.com uses and whether we're at risk of exceeding the limit?”
Security review of vendor domain
“As part of our vendor security review, I need to know the SPF lookup count for vendorcorp.com — does their SPF policy look like it's within budget?”
Troubleshooting email delivery failures
“We've been having email deliverability issues with newsletter.org — can you count the DNS lookups in their SPF record to see if they're over the 10-lookup limit?”
Technical details
Endpoint
POSThttps://market.datapackvibe.com/x402/demand-domain-spf-lookup-count-security-review?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, cheap static estimate of SPF DNS lookup usage for a domain during security reviews, email configuration audits, or deliverability troubleshooting. It is ideal when you don't need full recursive DNS resolution — just a structural count of mechanisms. Choose this over a full SPF validator when speed and cost matter more than recursive accuracy.
Side effects
- Domain has no SPF record — returns error or zero count
- Invalid or malformed domain input — request rejected
- Domain does not exist in DNS — lookup fails
- SPF record is syntactically malformed — parsing may fail or return partial count
- Network or DNS resolution timeout when fetching SPF TXT record
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| domain | string | Public DNS domain, e.g. example.com. |
Tags
x402
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