browser4-coding SKILL.md skillA
browser4-coding 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/browser4-coding@git:20260826.ac7c2f1Pins git:20260826.ac7c2f1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- platonai/browser4
- Path
skills/browser4-coding/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260826.ac7c2f1, committed Aug 26, 2026
- First version recorded
- Aug 14, 2026
- Size
- 13,884 bytes
- Repository stars
- 1,164
- License
- Apache-2.0
Create and validate Browser4 plugins, skills, JS scripts, and shell scripts; and develop Browser4 ITSELF (self-development): build modules, extract live skeletons, analyze impact, plan dev tasks, and check CDP pitfalls. Use when the user asks to write a Browser4 plugin or skill, write browser JS or build scripts, modify Browser4's own Kotlin/Rust code, or validate repo consistency.
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
# browser4-coding
## Quick Start
Create and validate a plugin, or a skill:
```text
coding.scaffold(type="plugin", pluginName="My Plugin", domain="media",
basePackage="ai.platon.pulsar.myplugin",
toolMethod="detectMedia", toolDescription="Detect media on the page")
coding.validate(type="plugin", path="browser4-plugins/browser4-myplugin")
coding.scaffold(type="skill", name="my-skill", description="What it does")
coding.validate(type="skill", path="skills/my-skill/SKILL.md")
```
For self-development work (modifying Browser4 itself), start with `coding.scaffoldFlow` — see Workflows below.
The programming-agent kernel for Browser4: sandboxed shell + filesystem, artifact scaffolding/validation (plugins, skills, browser JS, scripts), and a full self-development toolset for modifying Browser4's own code (live module graph, impact analysis, Maven builds with structured diagnostics, CDP pitfall awareness, high-level dev-task planning).
## When to Use
- User wants to create a new Browser4 plugin, skill (SKILL.md), browser JS script, or build/deploy/run script
- User wants to validate any of the above
…Read the whole file at its exact version.
How to install
mdr add platonai/browser4/browser4-coding@sha256:faab6af06f5ad45aThe line at the top of this page pins the label git:20260826.ac7c2f1, 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_2wnlqiigrfi4j3cm)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Aug 14, 2026 and Aug 26, 2026, about one every 3 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260826.ac7c2f1 latest | 2026-08-26 | ac7c2f1 | 13,884 B | A | view · diff |
| git:20260816.f061e8c | 2026-08-16 | f061e8c | 11,628 B | A | view · diff |
| git:20260815.2913ba8 | 2026-08-15 | 2913ba8 | 11,323 B | A | view · diff |
| git:20260815.f210a2e | 2026-08-15 | f210a2e | 10,374 B | A | view · diff |
| git:20260814.446b2b8 | 2026-08-14 | 446b2b8 | 4,718 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 (13884 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_2wnlqiigrfi4j3cm GET https://markdownregistry.com/api/v1/resolve?ref=platonai/browser4/browser4-coding GET https://markdownregistry.com/api/v1/blob/faab6af06f5ad45adfb9f37820f86f93524fb487e32b38fa636862de78a26d34
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.