# How to Check if a Package is Published on PyPI

## 🔍 Multiple Ways to Verify Package Publication

---

## 1. **PyPI Website** (Easiest)

### Check Package Page
Visit: `https://pypi.org/project/observatory-mcp/`

**If published:**
- ✅ You'll see package details, description, version, download stats
- ✅ Installation instructions
- ✅ Release history

**If not published:**
- ❌ "404 Not Found" error
- ❌ Message: "The project 'observatory-mcp' was not found"

---

## 2. **PyPI JSON API** (Programmatic)

### Using curl
```bash
curl https://pypi.org/pypi/observatory-mcp/json
```

**If published:**
```json
{
  "info": {
    "name": "observatory-mcp",
    "version": "0.1.0",
    "summary": "Observatory SDK for MCP...",
    ...
  },
  "releases": { ... },
  "urls": [ ... ]
}
```

**If not published:**
```json
{
  "message": "Not Found"
}
```

### Check HTTP Status
```bash
curl -I https://pypi.org/project/observatory-mcp/
# HTTP/2 200 = Published
# HTTP/2 404 = Not Published
```

---

## 3. **pip Commands** (CLI)

### Check Available Versions
```bash
pip index versions observatory-mcp
```

**If published:**
```
observatory-mcp (0.1.0)
Available versions: 0.1.0
```

**If not published:**
```
ERROR: No matching distribution found for observatory-mcp
```

### Try Installing
```bash
pip install observatory-mcp --dry-run
```

**If published:**
```
Would install observatory-mcp-0.1.0
```

**If not published:**
```
ERROR: Could not find a version that satisfies the requirement observatory-mcp
```

---

## 4. **PyPI Search** (Limited)

> **Note:** `pip search` is currently disabled by PyPI due to abuse.

Alternative search methods:

### PyPI.org Search
Visit: https://pypi.org/search/?q=observatory-mcp

### Libraries.io
Visit: https://libraries.io/search?q=observatory-mcp&platforms=Pypi

---

## 5. **Python Script Check**

### Quick Check Script
```python
import requests

def check_pypi_package(package_name):
    """Check if package exists on PyPI."""
    url = f"https://pypi.org/pypi/{package_name}/json"
    response = requests.get(url)
    
    if response.status_code == 200:
        data = response.json()
        print(f"✅ Package '{package_name}' is published!")
        print(f"   Version: {data['info']['version']}")
        print(f"   Author: {data['info']['author']}")
        print(f"   Summary: {data['info']['summary']}")
        return True
    elif response.status_code == 404:
        print(f"❌ Package '{package_name}' not found on PyPI")
        return False
    else:
        print(f"⚠️  Error checking package: {response.status_code}")
        return None

# Check our package
check_pypi_package("observatory-mcp")
```

---

## 6. **Using pip Show** (After Install)

If you've installed the package:

```bash
pip show observatory-mcp
```

**Output:**
```
Name: observatory-mcp
Version: 0.1.0
Summary: Observatory SDK for MCP server analytics
Home-page: https://github.com/yourusername/observatory
Author: Observatory Team
License: MIT
Location: /path/to/site-packages
Requires: httpx, pydantic
```

---

## 7. **Check Package Stats**

### PyPI Stats
Visit: https://pypistats.org/packages/observatory-mcp

Shows:
- Download statistics
- Version distribution
- Python version usage
- System distribution

### PePy
Visit: https://pepy.tech/project/observatory-mcp

Shows:
- Total downloads
- Recent downloads
- Version breakdown

---

## 🚀 Quick Checklist

Before checking:
- [ ] Package is built: `python -m build`
- [ ] Package uploaded: `twine upload dist/*`
- [ ] Wait 1-2 minutes for PyPI indexing

To verify publication:
- [ ] Visit https://pypi.org/project/observatory-mcp/
- [ ] Check API: `curl https://pypi.org/pypi/observatory-mcp/json`
- [ ] Try installing: `pip install observatory-mcp` (in fresh env)
- [ ] Check versions: `pip index versions observatory-mcp`

---

## 📋 For observatory-mcp Package

### Current Status Check

**Web Check:**
```bash
# Open in browser
open https://pypi.org/project/observatory-mcp/
```

**CLI Check:**
```bash
# Check if package exists
pip index versions observatory-mcp

# Try to get package info
curl -s https://pypi.org/pypi/observatory-mcp/json | jq '.info.version'
```

**Test Install:**
```bash
# In a new virtual environment
python -m venv test_env
source test_env/bin/activate
pip install observatory-mcp
python -c "import observatory_mcp; print(observatory_mcp.__version__)"
```

---

## 🔄 Publishing Process

If not published yet:

### 1. Build the Package
```bash
cd sdk/python-sdk
python -m build
```

### 2. Upload to Test PyPI (Optional)
```bash
twine upload --repository testpypi dist/*
# Check: https://test.pypi.org/project/observatory-mcp/
```

### 3. Upload to PyPI
```bash
twine upload dist/*
# Check: https://pypi.org/project/observatory-mcp/
```

### 4. Verify
```bash
# Wait 1-2 minutes, then:
pip install observatory-mcp
```

---

## 🔒 Security Note

**Never publish with credentials in code!** Always use:
- PyPI API tokens (not username/password)
- GitHub Actions with trusted publishing
- Environment variables for secrets

---

## 📊 Expected Timeline

After `twine upload`:
- **Immediate**: Package page available
- **1-2 minutes**: Pip can find package
- **5-10 minutes**: Search indexing complete
- **1 hour**: Stats/analytics start updating

---

## ✅ Success Indicators

Your package is successfully published when:
1. ✅ PyPI page loads: https://pypi.org/project/observatory-mcp/
2. ✅ `pip install observatory-mcp` works in fresh environment
3. ✅ JSON API returns package data
4. ✅ Package appears in PyPI search
5. ✅ Can import: `import observatory_mcp`

---

## 🆘 Troubleshooting

### Package Not Found
- Wait 2-3 minutes after upload
- Check upload was successful (no errors)
- Verify package name spelling

### 404 Error
- Package hasn't been uploaded yet
- Package name might be taken
- Upload failed (check twine output)

### Can't Install
- Check Python version compatibility
- Verify dependencies are available
- Try with `--no-cache-dir` flag

---

## 📚 Additional Resources

- **PyPI Help**: https://pypi.org/help/
- **Packaging Guide**: https://packaging.python.org/
- **Twine Docs**: https://twine.readthedocs.io/
- **Publishing Tutorial**: https://packaging.python.org/tutorials/packaging-projects/

---

## 🎯 Quick Command Reference

```bash
# Check if published
curl -I https://pypi.org/project/observatory-mcp/

# Get package info
curl -s https://pypi.org/pypi/observatory-mcp/json | jq

# List versions
pip index versions observatory-mcp

# Install and verify
pip install observatory-mcp
python -c "import observatory_mcp; print(observatory_mcp.__version__)"
```
