Use before paying an x402 endpoint you have not used before, when you cannot tel
Use before paying an x402 endpoint you have not used before, when you cannot tell a working seller from a trap, a testnet address dressed as mainnet, or a listing whose price no longer matches its challenge. Returns a verdict — live, degraded, trap, testnet or dead — a 0-100 risk score, and the specific findings behind both, so an agent can decline a bad endpoint instead of learning about it by losing the money. Costs less than the smallest payment it protects.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
299 msmedian answer time
$0.005listed price per call
$0.005price 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://deadchannel.vercel.app/probe
| Category | Market data |
|---|---|
| Provider host | deadchannel.vercel.app |
| Networks | algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 10 from 3 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.005 | 299 ms |
Example input (from the provider)
{
"body": {
"url": "https://api.example.com/paid-endpoint"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"properties": {
"body": {
"properties": {
"method": {
"description": "HTTP verb the resource expects, if known",
"type": "string"
},
"samples": {
"description": "Probes to take, 1-5 (default 2)",
"type": "number"
},
"url": {
"description": "The x402 resource URL to check",
"type": "string"
}
},
"required": [
"url"
],
"type": "object"
}
},
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"latencyMs": {
"properties": {
"p50": {
"type": "number"
},
"p99": {
"type": "number"
}
},
"type": "object"
},
"priceUsd": {
"type": "number"
},
"problems": {
"items": {
"properties": {
"detail": {
"type": "string"
},
"id": {
"type": "string"
},
"status": {
"type": "string"
}
},
"type": "object"
},
"type": "array"
},
"risk": {
"type": "number"
},
"url": {
"type": "string"
},
"verdict": {
"type": "string"
}
},
"type": "object"
}
},
"type": "object"
}
},
"type": "object"
}