# SPF Lookup Budget Estimate

> SPF Lookup Budget Estimate 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 the number of DNS lookup mechanisms in an SPF TXT record for a given domain to estimate whether the policy stays within the 10-lookup RFC limit.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/demand-domain-spf-lookup-count-it-administration?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/spf-lookup-budget-estimate-639c6bbb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AixrBGspjK9j69PlkESLA

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability spf-lookup-budget-estimate-639c6bbb -d '<json body>'
```

Example prompt: How many DNS lookups does the SPF record for acmecorp.com use? I need to know if we're close to the 10-lookup limit.

## When to prefer this

Use this endpoint when you need a quick, static estimate of SPF DNS lookup consumption for a domain without sending any email or performing live DNS chain resolution. Ideal for IT admins auditing SPF policies before adding new include mechanisms, for compliance checks, or for diagnosing potential SPF permerror caused by exceeding the 10-lookup limit. Not suitable when you need a full recursive runtime lookup count or live inbox verification.

## Known failure modes

- Domain has no SPF TXT record — returns zero or an error indicating no SPF policy found
- Domain does not exist or DNS resolution fails — returns an error
- SPF record is malformed or unparseable — may return partial or error response
- Nested includes beyond static analysis depth may undercount actual runtime lookups

## How this service works

SPF lookup budget estimate for IT administration: 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-consuming mechanisms (such as include, a, mx, redirect, exists, ptr) found in the domain's SPF TXT record, providing an estimated total against the RFC 7208 limit of 10 permitted lookups.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "domain": {
   "type": "string",
   "default": "example.com",
   "description": "Public DNS domain, e.g. example.com."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/spf-lookup-budget-estimate-639c6bbb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)