form-filling

Apps & Automation

Automatically fills web forms using provided field data and can optionally submit the form. Use when automating form input, testing forms, or submitting structured data to websites.

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How to use this skill

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Prompt to paste

I want to install this Agent Skill for this project in Codex.

Source SKILL.md: https://github.com/platonai/Browser4/blob/HEAD/browser4-agentic/src/main/resources/skills/form-filling/SKILL.md

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Form Filling Skill

Description

Automatically fill web forms with provided data. This skill handles various form field types and can optionally submit the form after filling.

Dependencies

web-scraping - Required for detecting form fields and structure

Parameters

Parameter	Type	Required	Default	Description
url	String	Yes	-	The URL of the page containing the form
formData	Map<String, String>	Yes	-	Key-value pairs representing field names and values
submit	Boolean	No	false	Whether to submit the form after filling

Return Value

Returns a SkillResult with the following data structure:

{
  "url": "string",
  "filledFields": ["field1", "field2"],
  "submitted": boolean,
  "message": "status message"
}

Usage Examples

Basic Form Filling

val result = registry.execute(
    skillId = "form-filling",
    context = context,
    params = mapOf(
        "url" to "https://example.com/contact",
        "formData" to mapOf(
            "name" to "John Doe",
            "email" to "john@example.com",
            "message" to "Hello!"
        )
    )
)

Form Filling with Submission

val result = registry.execute(
    skillId = "form-filling",
    context = context,
    params = mapOf(
        "url" to "https://example.com/signup",
        "formData" to mapOf(
            "username" to "johndoe",
            "password" to "securepass123",
            "email" to "john@example.com"
        ),
        "submit" to true
    )
)

Tool Call Specification

ToolSpec(
    domain = "skill.form",
    method = "fill",
    arguments = [
        "url: String",
        "formData: Map<String, String>",
        "submit: Boolean = false"
    ],
    returnType = "SkillResult",
    description = "Fill a web form with the provided data"
)

Error Handling

The skill returns a failure result in the following cases:

Missing required parameter url
Missing required parameter formData
Empty formData map
Form fields not found on the page

Lifecycle Hooks

onBeforeExecute

Validates that formData is not empty before execution.

validate

Checks if the required dependency skill (web-scraping) is available in the registry.

Implementation Notes

Supports various input types: text, email, password, textarea, select, checkbox, radio
Automatically handles form field detection and mapping
Respects CSRF tokens and hidden fields
Can handle multi-page forms through shared context
Thread-safe execution

Security Considerations

Never log sensitive form data (passwords, credit cards, etc.)
Validate form URLs to prevent CSRF attacks
Use HTTPS URLs for sensitive forms
Clear sensitive data from memory after use