Resolve the site's IP and check it against 15 major DNSBL spam/abuse blacklists
Resolve the site's IP and check it against 15 major DNSBL spam/abuse blacklists. Use before sending mail from, or trusting, a host. WARN = listed on 1–2 lists; DOWN = listed on 3 or more.
Not tested: has real-world effectsour last check, 2026-09-24
0 of 0checks answered this week
n/amedian answer time
$0.03listed price per call
n/aprice it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://x402.cloudpulsepoint.com/agent/check/blacklist
| Category | Everything else |
|---|---|
| Provider host | x402.cloudpulsepoint.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 17 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
We never call tools that send, buy, move money or file anything, not even without paying.
Example input (from the provider)
{
"body": {
"url": "https://example.com"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"url": {
"description": "Full http(s) URL of the site to check, e.g. \"https://example.com\". Must resolve to a public address \u2014 private, loopback, link-local, and cloud-metadata targets are rejected with HTTP 400 before any payment.",
"type": "string"
}
},
"required": [
"url"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"check": {
"const": "blacklist",
"description": "Identifies which check produced this result."
},
"network": {
"description": "CAIP-2 id of the chain the payment settled on (e.g. eip155:8453 = Base).",
"type": "string"
},
"result": {
"properties": {
"error": {
"description": "Human-readable failure reason, or null on success.",
"type": [
"string",
"null"
]
},
"listedCount": {
"description": "Number of blacklists the IP was found on.",
"type": [
"integer",
"null"
]
},
"listedTotal": {
"description": "Total number of blacklists queried (15).",
"type": [
"integer",
"null"
]
},
"sources": {
"description": "Comma-separated names of the blacklists that listed the IP, or null if clean.",
"type": [
"string",
"null"
]
},
"status": {
"description": "UP = listed on 0 blacklists; WARN = listed on 1\u20132; DOWN = listed on 3 or more.",
"enum": [
"UP",
"WARN",
"DOWN"
],
"type": "string"
},
"url": {
"description": "The normalized URL that was checked.",
"type": "string"
},
"warning": {
"description": "Human-readable warning when the check passed but a threshold was crossed, else null.",
"type": [
"string",
"null"
]
}
},
"type": "object"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}