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is-port-587-open-bulk
x402
is-port-587-open-bulk is a paid API for AI agents from ip.intel.rallylive.ca, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-11).
Checks whether TCP port 587 (SMTP submission) is open on up to 20 hosts in a single concurrent batch call, returning ordered results with per-item error fields and a failure count.
Price / call$0.1
Success—
StatusUnknown
How this service works
Bulk is port 587 open: up to 20 hosts in one call, processed concurrently, results in input order with a per-item error field and a failure count. Same answer per item as the single endpoint. Batch enrichment for agents that hold a list. $0.10 per batch.
Output
An ordered array of results corresponding to the input host list, where each item includes the open/closed status of port 587 and a per-item error field if the check failed; also includes an overall failure count for the batch.
Example use cases
Mail server fleet SMTP audit
“I have a list of 15 mail servers and I need to know which ones have port 587 open for SMTP submission — can you check them all at once and tell me which ones failed?”
Pre-deployment email relay check
“Before we launch, can you verify that port 587 is open on all of these candidate relay hosts: relay1.infra.io, relay2.infra.io, relay3.infra.io? Flag any that are closed or unreachable.”
Bulk ISP SMTP restriction detection
“I want to check whether my list of customer IP addresses have port 587 accessible — can you scan all 12 of them in one go and give me a count of how many are blocked?”
Technical details
Endpoint
GEThttps://ip.intel.rallylive.ca/bulk/ip/port/587?utm_source=zero.xyzWhen to prefer
Use this endpoint when you have a list of hosts (up to 20) and need to check port 587 availability across all of them efficiently in a single call rather than making sequential single-host requests. It is ideal for batch enrichment workflows, pre-deployment audits of mail infrastructure, or monitoring a fleet of SMTP relay servers. Choose the single-host endpoint instead when checking just one server.
Side effects
- Host unreachable or DNS resolution failure — per-item error field populated
- Batch exceeds 20 hosts — request rejected or truncated
- Network timeout on individual host probe — error flagged for that item only
- Invalid hostname or IP format — per-item error returned
- Payment not included or insufficient — 402 payment required response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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