data-validation SKILL.md skillA
data-validation from platonai/browser4 is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add platonai/browser4/data-validation@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- platonai/browser4
- Path
browser4-agentic/src/main/resources/skills/data-validation/SKILL.md- Versions recorded
- 2
- Latest version
- v1.0.0, committed Jun 25, 2026
- First version recorded
- Apr 19, 2026
- Size
- 3,581 bytes
- Repository stars
- 1,164
- License
- Apache-2.0
Validates data against common and custom rules (required fields, formats, ranges). Use when checking data quality, input validation, or enforcing schemas and constraints.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Data Validation Skill
## Description
Validate data against specified rules. This skill provides a flexible validation framework supporting common validation patterns like email format, required fields, and custom rules.
## Dependencies
None
## Parameters
| Parameter | Type | Required | Default | Description |
|-----------|------|----------|---------|-------------|
| data | Map<String, Any> | Yes | - | The data to validate |
| rules | List<String> | Yes | - | List of validation rules to apply |
## Return Value
Returns a `SkillResult` with the following data structure on success:
```json
{
"validationResults": {
"rule1": true,
"rule2": true
}
}
```
On failure, returns:
```json
{
"validationResults": {
"rule1": true,
"rule2": false
},
"errors": ["error message 1", "error message 2"]
}
```
## Supported Validation Rules
| Rule | Description | Example |
|------|-------------|---------|
| email | Validates email format | "user@example.com" |
| required | Checks all fields are non-null and non-blank | All values must be present |
## Usage Examples
### Email Validation
```kotlin
val result = registry.execute(
skillId = "data-validation",
…Read the whole file at its exact version.
How to install
mdr add platonai/browser4/data-validation@sha256:50fab265193217bcThe line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_xdkup6n5kl5upc4y)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Apr 19, 2026 and Jun 25, 2026, about one every 67 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-06-25 | 7eba5e1 | 3,581 B | A | view · diff |
| v1.0.0 | 2026-04-19 | dcd5a6b | 3,643 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3581 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
platonai/browser4 · 1,164 stars · license Apache-2.0 · pushed 2026-10-18 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_xdkup6n5kl5upc4y GET https://markdownregistry.com/api/v1/resolve?ref=platonai/browser4/data-validation GET https://markdownregistry.com/api/v1/blob/50fab265193217bc9061f1f11e6b92dca2a079fa3c1bf67b6c1b6f3854c8fc8c
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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