autofillin
Automated web form filling and file uploading skill with Playwright browser automation. Handles login persistence, form detection, file uploads, and waits for manual confirmation before submission.
Best use case
autofillin is best used when you need a repeatable AI agent workflow instead of a one-off prompt.
Automated web form filling and file uploading skill with Playwright browser automation. Handles login persistence, form detection, file uploads, and waits for manual confirmation before submission.
Teams using autofillin should expect a more consistent output, faster repeated execution, less prompt rewriting.
When to use this skill
- You want a reusable workflow that can be run more than once with consistent structure.
When not to use this skill
- You only need a quick one-off answer and do not need a reusable workflow.
- You cannot install or maintain the underlying files, dependencies, or repository context.
Installation
Claude Code / Cursor / Codex
Manual Installation
- Download SKILL.md from GitHub
- Place it in
.claude/skills/autofillin/SKILL.mdinside your project - Restart your AI agent — it will auto-discover the skill
How autofillin Compares
| Feature / Agent | autofillin | Standard Approach |
|---|---|---|
| Platform Support | Not specified | Limited / Varies |
| Context Awareness | High | Baseline |
| Installation Complexity | Unknown | N/A |
Frequently Asked Questions
What does this skill do?
Automated web form filling and file uploading skill with Playwright browser automation. Handles login persistence, form detection, file uploads, and waits for manual confirmation before submission.
Where can I find the source code?
You can find the source code on GitHub using the link provided at the top of the page.
SKILL.md Source
# AutoFillIn - Browser Form Automation Skill
**Trigger Command**: `autofillin`
An intelligent automation skill that fills web forms, uploads files/folders to correct positions, and handles complex multi-field submissions with persistent login support.
## What's New in v1.2.0
- Enhanced Error Handling: Graceful error recovery with detailed messages
- Consolidated Configuration: Merged mcp-config into SKILL.md
- Improved Robustness: Better port conflict handling and process management
- Cross-platform Fixes: Improved Windows/Linux compatibility
## Changelog
| Version | Changes |
|---------|---------|
| v1.2.0 | Enhanced error handling, consolidated config, improved robustness |
| v1.1.0 | Added Playwright support, session persistence, folder upload |
| v1.0.0 | Initial release with Chrome debug mode |
## Features
- Navigate to any web form URL
- Auto-fill text fields, textareas, dropdowns
- Upload files/folders to correct form positions
- Persistent login via saved browser storage
- Wait for manual confirmation before submission
- Support for multi-file uploads with position mapping
- Graceful error recovery
## Quick Setup
```bash
# 1. Install Playwright browsers
npx playwright install chromium
# 2. First-time login (saves session for reuse)
npx playwright open --save-storage=~/.playwright-auth.json "https://your-target-site.com"
# Login manually in the browser that opens, then close it
# 3. Future runs will auto-login using saved session
npx playwright open --load-storage=~/.playwright-auth.json "https://your-target-site.com"
```
## MCP Configuration
Add to your MCP settings (Claude Code, OpenCode, etc.):
```json
{
"mcpServers": {
"playwright": {
"command": "npx",
"args": ["-y", "@anthropic-ai/mcp-server-playwright"]
},
"filesystem": {
"command": "npx",
"args": ["-y", "@modelcontextprotocol/server-filesystem", "/"]
}
}
}
```
Environment variables for shell integration:
```bash
export CHROME_DEBUG_PORT=9222
export CHROME_USER_DATA_DIR="$HOME/.chrome-autofillin"
```
## Browser Automation Options
### Option 1: Playwright CLI (Recommended for OAuth sites)
```bash
# First login - saves session
npx playwright open --save-storage=~/.playwright-auth.json "https://molthub.com/upload"
# Subsequent uses - loads saved session
npx playwright open --load-storage=~/.playwright-auth.json "https://molthub.com/upload"
```
Advantages:
- No "unsafe browser" blocks from Google/GitHub OAuth
- Session persistence across runs
- Works with MCP browser tools
### Option 2: Chrome Debug Mode (For non-OAuth sites)
```bash
# Start Chrome with debug port
./scripts/start-chrome.sh "https://example.com/form"
# With your default Chrome profile (keeps existing logins)
./scripts/start-chrome.sh --use-default-profile "https://example.com/form"
```
Note: Chrome debug mode with custom `--user-data-dir` is blocked by Google OAuth. Use Playwright for sites requiring Google/GitHub login.
## Usage Examples
### Basic Form Filling
```
autofillin https://example.com/form
- Fill "Name" field with "John Doe"
- Fill "Email" field with "john@example.com"
- Upload resume.pdf to file input
```
### MoltHub Skill Upload
```
autofillin https://molthub.com/upload
Form Data:
- Slug: autofillin
- Display name: AutoFillIn - Browser Form Automation Skill
- Version: 1.2.0
- Tags: automation, browser, form, playwright, mcp
- Changelog: v1.2.0 - Enhanced error handling, consolidated config
Upload:
- Folder: ~/clawd/skills/autofillin/
[WAIT FOR MANUAL CONFIRMATION TO PUBLISH]
```
### Multi-file Upload with Position Mapping
```
autofillin https://example.com/document-upload
Files to upload:
- Position 1 (ID Document): ~/documents/id_card.pdf
- Position 2 (Proof of Address): ~/documents/utility_bill.pdf
- Position 3 (Photo): ~/photos/headshot.jpg
[WAIT FOR MANUAL CONFIRMATION]
```
## Workflow
```
1. BROWSER SETUP
- Check for saved session (~/.playwright-auth.json)
- Launch Playwright Chromium with session
- Or prompt for one-time login if no session exists
2. NAVIGATION & LOGIN
- Navigate to target URL
- Detect if login is required
- If login needed: Fill username, prompt for password, save session
3. PAGE ANALYSIS
- Take accessibility snapshot
- Identify all form fields
- Map field labels to input elements
4. AUTO-FILL PHASE
- Fill text fields using fill() or fill_form()
- Select dropdown options
- Upload files/folders via upload_file()
5. CONFIRMATION PHASE
- Display summary of filled data
- WAIT FOR MANUAL CONFIRMATION
- User reviews and clicks Submit/Publish
```
## MCP Tools Used
| Tool | Purpose |
|------|---------|
| take_snapshot | Get page accessibility tree |
| fill | Fill single form field |
| fill_form | Fill multiple fields at once |
| upload_file | Upload file or folder |
| browser_click | Click buttons |
| evaluate_script | Run JavaScript |
| navigate_page | Navigate to URLs |
## Credential Management
### Safe Storage (Recommended)
```bash
# Use macOS Keychain
security add-generic-password -a "github" -s "autofillin" -w "your-password"
security find-generic-password -a "github" -s "autofillin" -w
# Use Linux secret-tool
secret-tool store --label="autofillin-github" service autofillin username github
# Use Windows Credential Manager
cmdkey /add:autofillin-github /user:github /pass:your-password
```
### Session Persistence
Sessions saved to `~/.playwright-auth.json` include cookies, localStorage, and sessionStorage.
## Error Handling
| Error | Cause | Solution |
|-------|-------|----------|
| Unsafe browser | Google OAuth blocked | Use Playwright instead of Chrome debug |
| Login required | Session expired | Run with --save-storage |
| Element not found | Page changed | Take new snapshot |
| Upload failed | Wrong file type | Check webkitdirectory |
| Port in use | Another Chrome instance | Script auto-kills conflicting process |
| Chrome not found | Not installed | Run setup-env.sh |
## Troubleshooting
### Chrome won't start with debug mode
```bash
# Check if port is in use
lsof -i:9222
# Kill existing processes
pkill -f "remote-debugging-port=9222"
# Retry
./scripts/start-chrome.sh "https://example.com"
```
### Session not persisting
```bash
# Verify auth file exists
ls -la ~/.playwright-auth.json
# Re-authenticate
npx playwright open --save-storage=~/.playwright-auth.json "https://target-site.com"
```
### File upload not working
- Ensure file path is absolute
- Check file permissions: `ls -la /path/to/file`
- For folder uploads, verify the input has `webkitdirectory` attribute
## Files in This Skill
```
autofillin/
├── SKILL.md # This documentation (includes MCP config)
└── scripts/
├── setup-env.sh # Environment setup (cross-platform)
├── start-chrome.sh # Chrome debug launcher
└── autofillin.sh # Main orchestrator with error handling
```
## Author
- GitHub: [@leohan123123](https://github.com/leohan123123)
## License
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