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IP Listed on PSBL Blacklist Change Watch
x402
IP Listed on PSBL Blacklist Change Watch is a paid API for AI agents from ip.intel.rallylive.ca, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-13).
Checks if an IP is listed on the PSBL (Passive Spam Block List) and returns whether the result has changed since the last check, with before/after field diffs and last-seen timestamp.
Price / call$0.02
Success—
StatusUnknown
How this service works
Change watch for ip listed on psbl: runs the check, compares it with the result from your previous call for the same ip (kept 90 days) and returns the current answer, changed true/false, the fields that changed with before/after values, and when it was last seen. Schedule it to be alerted when this changes. $0.02 per check.
Output
Returns the current PSBL blacklist status for the IP, a boolean 'changed' flag indicating whether the result differs from the previous call, a diff of any changed fields with before and after values, and a timestamp of when the status was last seen. Previous results are retained for 90 days for comparison.
Example use cases
Mail server IP reputation monitoring
“Monitor my outbound mail server at IP 198.51.100.22 on the PSBL blacklist — let me know right away if its listing status changes from the last time you checked.”
ISP customer IP blacklist alert
“Check if the customer IP 203.0.113.88 has been newly listed or removed from the PSBL spam blacklist compared to the last check, and show me the before and after values.”
Security team IP watchlist alerting
“I'm running a scheduled watchlist — check 192.0.2.10 against PSBL and flag if the blacklist status has changed since the previous check 24 hours ago.”
Technical details
Endpoint
GEThttps://ip.intel.rallylive.ca/watch/ip/blacklist/psbl?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to detect changes in PSBL blacklist status for a specific IP over time, rather than just a one-time lookup. It is ideal for scheduled monitoring workflows where you want to be alerted only when something changes, avoiding noise from repeated identical results. Prefer this over a plain PSBL check when you need before/after diff data and change history retained across calls.
Side effects
- IP address not provided or invalid format — may return an error or empty result
- No previous result stored (first call) — 'changed' will be indeterminate or false with no diff
- PSBL service unreachable — check may fail or return stale data
- Previous result expired (older than 90 days) — comparison baseline lost
- Rate limiting or payment failure — call rejected with 402 or similar
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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