Reddit/Postmill Browser Automation Skill

This skill is based on Playwright MCP tools, providing automation capabilities for Reddit-like forum platforms (Postmill).

Core Concepts

In forum automation, we distinguish two types of operations:

Skill: Meaningful combinations of multiple tool calls, encapsulated as independent Python scripts
Basic Tools: Single function calls used for atomic operations.

I. Skills

1. Sign Up

Use Cases:

Create a new account on the forum after cilcing "Sign up" button
Register with specific username and password

Usage:

bash

# Usage:
#   python sign_up.py <username> <password> <username_ref> <password_ref> <password_repeat_ref> <submit_ref>
# Example:
python sign_up.py "AIDataAnalyst2025" "SecurePass123!" e35 e43 e44 e54

2. Create Post

Use Cases:

Submit a new post/submission to a forum aftering clicking "Submit" button
Create text posts with title and body

Usage:

bash

# Usage:
#   python create_post.py <title> <body> <title_ref> <body_ref> <create_btn_ref>
# Example:
python create_post.py "My Post Title" "Post body content here" e58 e63 e82

Note: The body text can contain multiple lines. Each line should start with a dash (-) for proper formatting.

3. Create Forum

Use Cases:

Create a new forum/community after clicking "Create forum" button
Set up forum name, title, description, and sidebar

Usage:

bash

# Usage:
#   python create_forum.py <name> <title> <description> <sidebar> <name_ref> <title_ref> <desc_ref> <sidebar_ref> <create_btn_ref>
# Example:
python create_forum.py "BudgetEuropeTravel" "Budget Travel Europe" "Community for sharing money-saving tips" "Share your best deals!" e51 e56 e61 e69 e83

4. Create Wiki

Use Cases:

Create a wiki page for a forum after clicking "Create new page" button
Set up wiki URL path, title, and content

Usage:

bash

# Usage:
#   python create_wiki.py <url_path> <title> <body> <url_ref> <title_ref> <body_ref> <save_btn_ref>
# Example:
python create_wiki.py "europe-travel-guide" "Complete Budget Travel Guide" "Wiki content here" e51 e56 e62 e69

II. Basic Tools (When to Use Single Functions)

Below are the basic tool functions and their use cases. These are atomic operations for flexible combination.

Note: Code should be written without line breaks.

How to Run

bash

# Standard format (browser persists across calls)
python run_browser_ops.py -c "await browser.navigate('http://localhost:9999')"

Navigation Tools

navigate(url: str)

Use Cases:

Open forum homepage
Navigate to specific forum or post

Example:

bash

python run_browser_ops.py -c "await browser.navigate('http://localhost:9999')"
python run_browser_ops.py -c "await browser.navigate('http://localhost:9999/f/MachineLearning')"

navigate_back()

Use Cases:

Go back to previous page
Return to forum listing after viewing post

Example:

bash

python run_browser_ops.py -c "await browser.navigate_back()"

Interaction Tools

click(ref: str, element: Optional[str] = None)

Use Cases:

Click navigation links (Forums, Submit, Wiki, etc.)
Click forum links and post titles
Click buttons (Sign up, Create, Save, Upvote, etc.)
Click pagination links (More, Page 2, etc.)

Example:

bash

# Click Forums link
python run_browser_ops.py -c "await browser.click(ref='e22', element='Forums link')"

# Click a post title
python run_browser_ops.py -c "await browser.click(ref='e77', element='Post title link')"

# Click Upvote button
python run_browser_ops.py -c "await browser.click(ref='e94', element='Upvote button')"

type_text(ref: str, text: str, element: Optional[str] = None)

Use Cases:

Fill form fields (username, password, title, body)
Enter search queries
Fill wiki content

Example:

bash

# Enter username
python run_browser_ops.py -c "await browser.type_text(ref='e35', text='MyUsername', element='Username field')"

# Enter post body
python run_browser_ops.py -c "await browser.type_text(ref='e63', text='Post content here', element='Body textbox')"

select_option(ref: str, element_desc: str, value: str)

Use Cases:

Select timezone in user settings
Select sorting options
Select dropdown values

Example:

bash

# Select timezone
python run_browser_ops.py -c "await browser.select_option(ref='e56', element_desc='Time zone combobox', value='Europe / Amsterdam')"

press_key(key: str)

Use Cases:

Submit search queries (press Enter)
Submit forms

Example:

bash

python run_browser_ops.py -c "await browser.press_key('Enter')"

Page State Tools

snapshot()

Use Cases:

When unsure about current page state
Need to find ref references for elements
Verify if operation was successful
Count posts or comments on a page

Example:

bash

python run_browser_ops.py -c "await browser.snapshot()"

Best Practices:

Use snapshot after navigation to find element refs
Use snapshot to count items on a page
Use snapshot to verify data before submitting

III. Common Navigation Patterns

Forum Navigation

bash

# Navigate to homepage
python run_browser_ops.py -c "await browser.navigate('http://localhost:9999')"

Sorting and Pagination

bash

# Click Sort by dropdown
python run_browser_ops.py -c "await browser.click(ref='e54', element='Sort by: Hot dropdown')"

IV. Best Practices

Use snapshot() Liberally

Use

snapshot()

in the following situations:

After navigating to a new page
Before performing actions that require element refs
When counting posts or analyzing content
To verify successful completion of actions

Usage Principles

Navigate first: Start by navigating to
```
http://localhost:9999
```
Use snapshot() liberally: Forum pages have dynamic refs, verify state often
Find refs: Always find current refs before using skills

reddit-browser-automation

NPX Install

Tags

SKILL.md Content

Reddit/Postmill Browser Automation Skill

Core Concepts

I. Skills

1. Sign Up

2. Create Post

3. Create Forum

4. Create Wiki

II. Basic Tools (When to Use Single Functions)

How to Run

Navigation Tools

`navigate(url: str)`

`navigate_back()`

Interaction Tools

`click(ref: str, element: Optional[str] = None)`

`type_text(ref: str, text: str, element: Optional[str] = None)`

`select_option(ref: str, element_desc: str, value: str)`

`press_key(key: str)`

Page State Tools

`snapshot()`

III. Common Navigation Patterns

Forum Navigation

Sorting and Pagination

IV. Best Practices

Use snapshot() Liberally

Usage Principles