Context Files and URLs

Prompts can have attached context items - files and URLs that provide additional information when using the prompt.

Understanding Context

Context items are attachments that supplement a prompt:

Files - Documents, images, data files uploaded to Claro
URLs - Web pages or external resources

from baytos.claro import BaytClient

client = BaytClient(api_key="your_api_key")
prompt = client.get_prompt("@workspace/research-assistant:v1")

# Check if prompt has context
if prompt.has_context():
    print(f"This prompt has {len(prompt.context)} context items")

Checking for Context

Before working with context, check if it exists:

prompt = client.get_prompt("@workspace/my-prompt:v1")

# Check if any context exists
if prompt.has_context():
    print("Prompt has attachments")

# Get all context items
context_items = prompt.context
for item in context_items:
    print(f"- {item.type}: {item}")

File Contexts

Getting File Contexts

prompt = client.get_prompt("@workspace/prompt-with-files:v1")

# Get only file-type contexts
files = prompt.get_file_contexts()

for file in files:
    print(f"File: {file.file_name}")
    print(f"Size: {file.file_size:,} bytes")
    print(f"Type: {file.mime_type}")
    print()

File Metadata

Each file context provides:

file = files[0]

# Basic info
print(f"ID: {file.id}")
print(f"Type: {file.type}")  # Always "file"
print(f"Label: {file.label}")  # Optional custom label

# File-specific info
print(f"Filename: {file.file_name}")
print(f"Size: {file.file_size} bytes")
print(f"MIME type: {file.mime_type}")
print(f"Created: {file.created_at}")  # Unix timestamp

Downloading Files

Download file content to memory:

prompt = client.get_prompt("@workspace/data-analysis:v1")
files = prompt.get_file_contexts()

if files:
    file = files[0]

    # Download file content
    content = client.download_context_file(file.id)

    # Content is returned as bytes
    print(f"Downloaded {len(content):,} bytes")

    # Save to disk
    with open(file.file_name, 'wb') as f:
        f.write(content)

    print(f"Saved to: {file.file_name}")

Getting Download URLs

For large files or delegating downloads, get a signed URL:

file = files[0]

# Get signed download URL
url_info = client.get_context_download_url(file.id)

download_url = url_info['url']
expires_in = url_info['expiresIn']  # Seconds until expiry

print(f"Download URL: {download_url}")
print(f"Expires in: {expires_in} seconds")

# URL is pre-signed, no authentication needed
# Can be passed to browser, other services, etc.

Download URLs expire after 1 hour by default. Generate a new URL if needed.

Example: Download All Files

import os
from baytos.claro import BaytClient

client = BaytClient(api_key=os.getenv("BAYT_API_KEY"))
prompt = client.get_prompt("@workspace/research:v1")

# Create directory for downloads
os.makedirs("downloads", exist_ok=True)

# Download all files
files = prompt.get_file_contexts()
for file in files:
    print(f"Downloading {file.file_name}...")

    content = client.download_context_file(file.id)

    # Save with original filename
    filepath = os.path.join("downloads", file.file_name)
    with open(filepath, 'wb') as f:
        f.write(content)

    print(f"  Saved: {filepath} ({file.file_size:,} bytes)")

print(f"\nDownloaded {len(files)} file(s)")

URL Contexts

Getting URL Contexts

prompt = client.get_prompt("@workspace/web-research:v1")

# Get only URL-type contexts
urls = prompt.get_url_contexts()

for url_item in urls:
    print(f"URL: {url_item.url}")
    if url_item.label:
        print(f"Label: {url_item.label}")
    if url_item.url_fetched_at:
        print(f"Fetched: {url_item.url_fetched_at}")
    print()

URL Metadata

Each URL context provides:

url_item = urls[0]

# Basic info
print(f"ID: {url_item.id}")
print(f"Type: {url_item.type}")  # Always "url"
print(f"Label: {url_item.label}")  # Optional custom label

# URL-specific info
print(f"URL: {url_item.url}")
print(f"Fetched at: {url_item.url_fetched_at}")  # Unix timestamp

Working with Mixed Context

Handle both files and URLs:

prompt = client.get_prompt("@workspace/comprehensive:v1")

# Get all context items
for item in prompt.context:
    if item.is_file():
        print(f"📄 File: {item.file_name} ({item.file_size:,} bytes)")
    elif item.is_url():
        print(f"🔗 URL: {item.url}")

Type Checking

Check context item types:

for item in prompt.context:
    # Method 1: Use helper methods
    if item.is_file():
        print(f"This is a file: {item.file_name}")

    if item.is_url():
        print(f"This is a URL: {item.url}")

    # Method 2: Check type property
    if item.type == "file":
        print("File type")
    elif item.type == "url":
        print("URL type")

Complete Example

#!/usr/bin/env python3
"""
Example: Download all context files from a prompt
"""

import os
from pathlib import Path
from baytos.claro import BaytClient

def download_prompt_context(package_name: str, output_dir: str = "downloads"):
    """Download all files attached to a prompt"""

    client = BaytClient(api_key=os.getenv("BAYT_API_KEY"))
    prompt = client.get_prompt(package_name)

    print(f"Prompt: {prompt.title}")
    print(f"Package: {prompt.package_name}\n")

    if not prompt.has_context():
        print("No context items attached to this prompt")
        return

    # Create output directory
    Path(output_dir).mkdir(parents=True, exist_ok=True)

    # Process all context items
    files = prompt.get_file_contexts()
    urls = prompt.get_url_contexts()

    # Download files
    if files:
        print(f"Downloading {len(files)} file(s)...\n")
        for i, file in enumerate(files, 1):
            print(f"{i}. {file.file_name}")
            print(f"   Size: {file.file_size:,} bytes")
            print(f"   Type: {file.mime_type}")

            # Download
            content = client.download_context_file(file.id)

            # Save
            filepath = Path(output_dir) / file.file_name
            filepath.write_bytes(content)

            print(f"   Saved: {filepath}")
            print()

    # List URLs
    if urls:
        print(f"\n{len(urls)} URL(s):")
        for i, url_item in enumerate(urls, 1):
            label = url_item.label or "Untitled"
            print(f"{i}. {label}: {url_item.url}")

    print("\nDone!")

if __name__ == "__main__":
    download_prompt_context("@workspace/research-assistant:v1")

Error Handling

Handle common errors when working with context:

from baytos.claro import (
    BaytClient,
    BaytNotFoundError,
    BaytAuthError,
    BaytValidationError
)

client = BaytClient(api_key="...")

try:
    prompt = client.get_prompt("@workspace/my-prompt:v1")
    files = prompt.get_file_contexts()

    if files:
        content = client.download_context_file(files[0].id)

except BaytNotFoundError:
    print("Prompt or file not found")
except BaytAuthError:
    print("Authentication failed - check your API key")
except BaytValidationError as e:
    print(f"Invalid request: {e}")
except Exception as e:
    print(f"Error: {e}")

Best Practices

Check Context Existence

Always check if context exists before accessing:

# ✅ Good: Check first
if prompt.has_context():
    files = prompt.get_file_contexts()
    if files:
        content = client.download_context_file(files[0].id)

# ❌ Bad: Assume context exists
files = prompt.get_file_contexts()
content = client.download_context_file(files[0].id)  # May fail!

Handle Large Files Carefully

For large files, consider using download URLs instead of downloading to memory:

MAX_MEMORY_SIZE = 50 * 1024 * 1024  # 50 MB

for file in files:
    if file.file_size > MAX_MEMORY_SIZE:
        # Get URL instead of downloading
        url_info = client.get_context_download_url(file.id)
        print(f"Large file - use URL: {url_info['url']}")
    else:
        # Safe to download to memory
        content = client.download_context_file(file.id)

Sanitize Filenames

Sanitize filenames before saving to disk:

import re
from pathlib import Path

def safe_filename(filename: str) -> str:
    """Remove unsafe characters from filename"""
    # Remove path traversal attempts
    filename = Path(filename).name
    # Remove unsafe characters
    filename = re.sub(r'[^\w\s.-]', '', filename)
    return filename

for file in files:
    safe_name = safe_filename(file.file_name)
    content = client.download_context_file(file.id)

    with open(safe_name, 'wb') as f:
        f.write(content)

Process Files by Type

Filter and process files based on MIME type:

files = prompt.get_file_contexts()

# Process only images
image_files = [f for f in files if f.mime_type.startswith('image/')]

# Process only PDFs
pdf_files = [f for f in files if f.mime_type == 'application/pdf']

# Process text files
text_files = [f for f in files if f.mime_type.startswith('text/')]

for pdf in pdf_files:
    content = client.download_context_file(pdf.id)
    # Process PDF...

Next Steps

Variables

Extract and validate variables in prompts

Error Handling

Handle errors gracefully

Advanced Features

Performance optimization and caching

API Reference

Complete API documentation

Getting Started

Python SDK

Examples

Guides

Context Files and URLs

Context Files and URLs

Understanding Context

Checking for Context

File Contexts

Getting File Contexts

File Metadata

Downloading Files

Getting Download URLs

Example: Download All Files

URL Contexts

Getting URL Contexts

URL Metadata

Working with Mixed Context

Type Checking

Complete Example

Error Handling

Best Practices

Next Steps

Variables

Error Handling

Advanced Features

API Reference

Getting Started

Python SDK

Examples

Guides

​Context Files and URLs

​Understanding Context

​Checking for Context

​File Contexts

​Getting File Contexts

​File Metadata

​Downloading Files

​Getting Download URLs

​Example: Download All Files

​URL Contexts

​Getting URL Contexts

​URL Metadata

​Working with Mixed Context

​Type Checking

​Complete Example

​Error Handling

​Best Practices

​Next Steps

Variables

Error Handling

Advanced Features

API Reference

Context Files and URLs

Understanding Context

Checking for Context

File Contexts

Getting File Contexts

File Metadata

Downloading Files

Getting Download URLs

Example: Download All Files

URL Contexts

Getting URL Contexts

URL Metadata

Working with Mixed Context

Type Checking

Complete Example

Error Handling

Best Practices

Next Steps