Are these x402 endpoints safe to pay?
Are these x402 endpoints safe to pay? Up to 10 endpoints in one call (?url=a&url=b): per endpoint go / caution / no_go, the recommended payment option and why, plus totals. For marketplaces and agents that weigh several services. Never pays the endpoints.
Answeringour last check, 2026-09-29
1 of 1checks answered this week
185 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
GET https://x402-doctor.fizzl.eu/api/v1/preflight/batch
| Category | Everything else |
|---|---|
| Provider host | x402-doctor.fizzl.eu |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-29 | valid payment request | 402 | $0.005 | 185 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"max_usd": "0.05",
"url": [
"https://ichimoku-signal.fizzl.eu/signal/BTC-USDT",
"https://presign-guard.fizzl.eu/v1/token"
]
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"max_usd": {
"description": "Your budget per call in USD; above it the verdict is no_go.",
"type": "string"
},
"method": {
"description": "HTTP method you will call them with. Default: try GET, then POST.",
"enum": [
"GET",
"POST"
],
"type": "string"
},
"network": {
"description": "CAIP-2 network you want to pay on.",
"type": "string"
},
"url": {
"description": "The x402 endpoints to check, one url parameter each (?url=a&url=b), at most 10.",
"items": {
"type": "string"
},
"maxItems": 10,
"type": "array"
}
},
"required": [
"url"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"checked_at": {
"type": "string"
},
"count": {
"type": "integer"
},
"counts": {
"properties": {
"caution": {
"type": "integer"
},
"go": {
"type": "integer"
},
"no_go": {
"type": "integer"
},
"unknown": {
"type": "integer"
}
},
"type": "object"
},
"results": {
"items": {
"properties": {
"error": {
"type": "string"
},
"options": {
"type": "array"
},
"reasons": {
"type": "array"
},
"recommended_option": {
"type": [
"integer",
"null"
]
},
"safe_to_pay": {
"type": "boolean"
},
"summary": {
"type": "string"
},
"url": {
"type": "string"
},
"verdict": {
"enum": [
"go",
"caution",
"no_go",
"unknown"
],
"type": "string"
}
},
"required": [
"url",
"verdict",
"safe_to_pay",
"summary"
],
"type": "object"
},
"type": "array"
}
},
"required": [
"count",
"counts",
"results"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}