Inspect a public URL with HEAD; GET only on 405/501
Inspect a public URL with HEAD; GET only on 405/501. Return origin status, final URL, headers, cache validators and up to 5 redirects. Limits: 8s, 2 MiB. Origin 4xx/5xx are observations; length is unverified and SHA256 covers only complete GET bodies. No JavaScript, login or availability guarantee. 0.001 Base Sepolia test USDC per success; invalid inputs/errors are not settled.
Answeringour last check, 2026-09-26
1 of 1checks answered this week
935 msmedian answer time
$0.001listed price per call
$0.001price 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://http--forest-gas-station--lcjl27p8lmjs.code.run/url/preflight
| Category | Code and developer |
|---|---|
| Provider host | http--forest-gas-station--lcjl27p8lmjs.code.run |
| Networks | eip155:84532 |
| 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 |
|---|---|---|---|---|
| 2026-09-26 | valid payment request | 402 | $0.001 | 935 ms |
Example input (from the provider)
{
"body": {
"url": "https://example.com/"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"url": {
"description": "Absolute public HTTP(S) URL on port 80/443. No credentials. Private/reserved DNS/IPs and HTTPS downgrades rejected.",
"maxLength": 2048,
"minLength": 1,
"pattern": "^https?://",
"type": "string"
}
},
"required": [
"url"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"body_sha256": {
"pattern": "^[a-f0-9]{64}$",
"type": [
"string",
"null"
]
},
"cache": {
"additionalProperties": false,
"properties": {
"cache_control": {
"type": [
"string",
"null"
]
},
"etag": {
"type": [
"string",
"null"
]
},
"expires": {
"type": [
"string",
"null"
]
},
"last_modified": {
"type": [
"string",
"null"
]
}
},
"required": [
"etag",
"last_modified",
"cache_control",
"expires"
],
"type": "object"
},
"content_length": {
"minimum": 0,
"type": [
"integer",
"null"
]
},
"content_type": {
"type": [
"string",
"null"
]
},
"final_url": {
"type": "string"
},
"head_redirect_chain": {
"items": {
"additionalProperties": false,
"properties": {
"location": {
"type": "string"
},
"status": {
"minimum": 0,
"type": "integer"
},
"url": {
"type": "string"
}
},
"required": [
"url",
"status",
"location"
],
"type": "object"
},
"maxItems": 5,
"type": "array"
},
"head_status": {
"minimum": 0,
"type": "integer"
},
"method": {
"enum": [
"HEAD",
"GET"
]
},
"redirect_chain": {
"items": {
"additionalProperties": false,
"properties": {
"location": {
"type": "string"
},
"status": {
"minimum": 0,
"type": "integer"
},
"url": {
"type": "string"
}
},
"required": [
"url",
"status",
"location"
],
"type": "object"
},
"maxItems": 5,
"type": "array"
},
"status": {
"minimum": 0,
"type": "integer"
},
"used_get_fallback": {
"type": "boolean"
}
},
"required": [
"status",
"final_url",
"redirect_chain",
"method",
"head_status",
"head_redirect_chain",
"used_get_fallback",
"content_type",
"content_length",
"cache",
"body_sha256"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}