NASA-MCP

Instructions

Implementation Reference

• src/nasa_mcp/server.py:692-745 (handler)

  Implements the get_notifications MCP tool handler. Fetches DONKI notifications from NASA's API using make_nasa_request helper, handles errors, formats and returns a string summary of notifications with details like ID, type, issue time, header, and truncated body.
  async def get_notifications(start_date: str = None, end_date: str = None, notification_type: str = "all") -> str: """Get DONKI notifications. Args: start_date: Start date in YYYY-MM-DD format. Defaults to 7 days before current date. end_date: End date in YYYY-MM-DD format. Defaults to current date. notification_type: Notification type. Options: all, FLR, SEP, CME, IPS, MPC, GST, RBE, report. """ params = {"type": notification_type} if start_date: params["startDate"] = start_date if end_date: params["endDate"] = end_date url = f"{NASA_API_BASE}/DONKI/notifications" data = await make_nasa_request(url, params) if not data: return "Could not retrieve DONKI notifications due to a connection error." # Check for error response (must be a dictionary) if isinstance(data, dict) and "error" in data: return f"API Error: {data.get('error')} - Details: {data.get('details', 'N/A')}" if isinstance(data, dict) and data.get("binary_content"): return f"Received unexpected binary content from Notifications API. URL: {data.get('url')}" try: # Ensure data is a list if not isinstance(data, list): logger.error(f"Unexpected non-list response from Notifications API: {data}") return "Received unexpected data format from Notifications API." # Format notifications results if not data: return "No notifications for the specified period and type." result = [f"Notifications found: {len(data)}"] display_limit = 10 count = 0 for notification in data: if count >= display_limit: result.append(f"n... and {len(data) - display_limit} more notifications.") break result.append(f"nID: {notification.get('messageID', 'Unknown')}") result.append(f"Type: {notification.get('messageType', 'Unknown')}") result.append(f"Issue Time: {notification.get('messageIssueTime', 'Unknown')}") result.append(f"Header: {notification.get('messageHeader', 'N/A')}") # Body can be long, maybe truncate body = notification.get('messageBody', 'N/A') result.append(f"Body: {body[:200]}{'...' if len(body) > 200 else ''}") result.append("-" * 40) count += 1 return "n".join(result) except Exception as e: logger.error(f"Error processing Notifications data: {str(e)}") return f"Error processing notifications: {str(e)}"
• src/nasa_mcp/server.py:28-82 (helper)

  Shared helper function used by get_notifications to make HTTP requests to NASA APIs, handling JSON/binary responses, errors, and adding API key.
  async def make_nasa_request(url: str, params: dict = None) -> Union[dict[str, Any], List[Any], None]: """Make a request to the NASA API with proper error handling. Handles both JSON and binary (image) responses. """ logger.info(f"Making request to: {url} with params: {params}") if params is None: params = {} # Ensure API key is included in parameters if "api_key" not in params: params["api_key"] = API_KEY async with httpx.AsyncClient() as client: try: response = await client.get(url, params=params, timeout=30.0, follow_redirects=True) response.raise_for_status() # Raise an exception for bad status codes (4xx or 5xx) content_type = response.headers.get("Content-Type", "").lower() if "application/json" in content_type: try: return response.json() except json.JSONDecodeError as json_err: logger.error(f"JSON decode error for URL {response.url}: {json_err}") logger.error(f"Response text: {response.text[:500]}") # Log beginning of text return {"error": "Failed to decode JSON response", "details": str(json_err)} elif content_type.startswith("image/"): logger.info(f"Received binary image content ({content_type}) from {response.url}") # Return a dictionary indicating binary content was received return { "binary_content": True, "content_type": content_type, "url": str(response.url) # Return the final URL after redirects } else: # Handle other unexpected content types logger.warning(f"Unexpected content type '{content_type}' received from {response.url}") return {"error": f"Unexpected content type: {content_type}", "content": response.text[:500]} except httpx.HTTPStatusError as http_err: logger.error(f"HTTP error occurred: {http_err} - {http_err.response.status_code} for URL {http_err.request.url}") try: # Try to get more details from response body if possible error_details = http_err.response.json() except Exception: error_details = http_err.response.text[:500] return {"error": f"HTTP error: {http_err.response.status_code}", "details": error_details} except httpx.RequestError as req_err: logger.error(f"Request error occurred: {req_err} for URL {req_err.request.url}") return {"error": "Request failed", "details": str(req_err)} except Exception as e: logger.error(f"An unexpected error occurred: {str(e)}") return {"error": "An unexpected error occurred", "details": str(e)}