Loads a public https page, finds the requested form, fills your values into it i
Loads a public https page, finds the requested form, fills your values into it in a real headless browser and reports what a submission would run into — without submitting. Each field is checked against what the page itself declares: whether it is required and empty, whether the value matches the field type for email, url, number, tel, date, time and color, and whether a select value is one of the offered options.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
957 msmedian answer time
$0.01listed price per call
$0.01price 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://lauf.halowerk.com/v1/form-dryrun
| Category | Everything else |
|---|---|
| Provider host | lauf.halowerk.com |
| Networks | eip155:8453 |
| 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 |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.01 | 957 ms |
Example input (from the provider)
{
"body": {
"form_index": 0,
"url": "https://www.selenium.dev/selenium/web/web-form.html",
"values": {
"my-text": "Dry-run only."
}
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"form_index": {
"default": 0,
"description": "Which form on the page, in document order. Default is the first.",
"maximum": 20,
"minimum": 0,
"type": "integer"
},
"form_name": {
"description": "Pick the form by its name or id instead of by position. Wins over form_index when both are given.",
"maxLength": 120,
"type": "string"
},
"url": {
"description": "The https page carrying the form.",
"format": "uri",
"type": "string"
},
"values": {
"additionalProperties": {
"type": [
"string",
"number",
"boolean"
]
},
"description": "Field name to value. Field names are the name attributes of the form controls; use form_index first with an empty probe if you do not know them.",
"maxProperties": 40,
"minProperties": 1,
"type": "object"
}
},
"required": [
"url",
"values"
],
"type": "object"
},
"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"
}
},
"required": [
"input"
],
"type": "object"
}