---
title: "2025 Forecast & Monitor release notes"
slug: "2025-forecast-monitor-release-notes"
updated: 2025-05-28T06:13:06Z
published: 2025-05-28T06:13:06Z
---

> ## Documentation Index
> Fetch the complete documentation index at: https://kb.solargis.com/llms.txt
> Use this file to discover all available pages before exploring further.

# 2025 Forecast & Monitor release notes

| Release date | Released features |
| --- | --- |
| 28.5.2025 | ##### Solargis Monitor API & Solargis Forecast API **API upgrade:** The API services accessible at URLs starting with [https://solargis.info/ws/rest/datadelivery/request](https://solargis.info/ws/rest/datadelivery/request) (Solargis Monitor API and Solargis Forecast API) have been upgraded to improve performance and transparency. --- **Performance enhancements:** The API backend has been upgraded to a high-performance, scalable framework for rate limit evaluation to reduce latency during API calls. - Some users should experience faster response times and improved reliability. --- **New response headers for enhanced transparency:** Custom response headers are now included in every API response (where applicable) to provide real-time visibility into API usage and limits: - **solargis-usage-total** and **solargis-limit-total**: Show the total number of calls made and the allowed limit for the entire subscription period. - **solargis-usage-month** and **solargis-limit-month**: Track monthly API usage and limits, refreshing every calendar month (UTC). - **solargis-usage-day** and **solargis-limit-day**: Track daily API usage and limits, refreshing at UTC midnight. - **solargis-usage-unique-locations** and **solargis-limit-unique-locations**: Monitor the number of unique locations accessed, valid for the entire subscription period. - **solargis-request-id**: Assigns a unique ID to every API transaction for easier tracking and support. Users can now check their API consumption after each call for improved transparency and self-management. --- **Usage API discontinued:** The Usage API previously available at [https://solargis.info/ws/usage/](https://solargis.info/ws/usage/) has been discontinued. - Usage information is now provided directly in each HTTP response header. --- **New HTTP response codes:** API error handling has been improved with updated response codes: - **429 Too Many Requests** is now returned when rate limits are exceeded (previously 403 Forbidden). - **401 Unauthorized** is now returned for invalid API keys or tokens (previously 403 Forbidden). --- **More useful error messages:** Error messages have been improved for greater clarity and easier troubleshooting. --- **Untouched API interface and data format:** This upgrade does not change the API interface or data format (XML). - Data values remain unchanged, ensuring compatibility with existing integrations. |