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Scout Packs Email/Domain Deliverability Scorer
x402
Scout Packs Email/Domain Deliverability Scorer is a paid API for AI agents from scout-packs-production.up.railway.app, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-11).
Scores an email address or domain for deliverability, returning a numeric score, verdict, and validation checks (MX, syntax, etc.)
Price / call$0.03
Success—
StatusUnknown
How this service works
Verified B2B lead packs and per-lead enrichment lookups for agents. $0.01 per lookup or pack (demand probe). USDC on Base via x402. No account, API key, or subscription.
Output
Returns a JSON object with a numeric deliverability score (0–1), a verdict string (e.g. 'deliverable'), a checks object indicating whether MX and syntax validations passed, an array of flags for any issues found, and a receipt field confirming the paid lookup.
Example use cases
Pre-send bounce risk check
“Before I send this cold email campaign, can you check whether david@prospectcorp.com is deliverable and won't bounce?”
Lead list quality gate
“I've got a list of B2B leads — can you score the email mike@techstartup.io for deliverability so I know if it's worth reaching out?”
Domain MX record verification
“Can you check if the domain globalwidgets.com is set up to receive email — does it have valid MX records?”
Technical details
Endpoint
GEThttps://scout-packs-production.up.railway.app/deliverability?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, per-address deliverability score before sending outreach, validating imported lead lists, or gating B2B contact data quality. It requires no account or API key — pay $0.03 USDC per call via x402 on Base. Prefer this over full email verification suites when you need lightweight, per-lead scoring without subscription overhead, especially inside agent workflows doing real-time lead enrichment.
Side effects
- Missing both email and domain parameters — returns error requiring one of the two
- Both email and domain provided simultaneously — schema requires one or the other
- Invalid email format — may return low score or syntax check failure
- Domain with no MX records — returns non-deliverable verdict with mx:false
- Payment failure via x402/USDC — request rejected before processing
- Unresolvable or nonexistent domain — returns failed checks and low score
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"flags": [],
"score": 0.92,
"checks": {
"mx": true,
"syntax": true
},
"receipt": "ok",
"verdict": "deliverable"
}
}Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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