Use before paying an x402 endpoint you have not used before, when you cannot tell a workin
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.
5000 (raw units)
price
12
calls / 30d
3
unique payers
2026-09-14
updated
Provider
deadchannel.vercel.app · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x712c78928080Adb009E31315c0c3c7473dA9648a",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "5000",
"maxTimeoutSeconds": 120
},
{
"scheme": "exact",
"network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
"payTo": "NLT4P2QFI3OO3PTLQHQXCAM2RA2Y7T4RZZKZF43BLMBKDFPFX54ZLDY2JU",
"asset": "31566704",
"amount": "5000",
"maxTimeoutSeconds": 120
},
{
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "9FDr6dYrxCRZYeaiXB86MqA9fuC3j5nH5u5fSQvD6QWd",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"amount": "5000",
"maxTimeoutSeconds": 120
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"body": {
"url": "https://api.example.com/paid-endpoint"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"latencyMs": {
"p50": 180,
"p99": 240
},
"priceUsd": 0.01,
"problems": [
{
"detail": "No input or output schema.",
"id": "schema-advertised",
"status": "warn"
}
],
"risk": 25,
"url": "https://api.example.com/paid-endpoint",
"verdict": "degraded"
},
"type": "json"
}
},
"schema": {
"$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"
}
}
}Use it
curl
curl "https://deadchannel.vercel.app/probe" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://deadchannel.vercel.app/probe");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://deadchannel.vercel.app/probe")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/8027.json, and this resource appears in /discovery/resources and /discovery/search.