add mantledb to storage

README.md

@@ -1270,6 +1270,7 @@ Update Time, five active automations, webhooks.
   * [LibreQR](https://libreqr.com) — Free QR code generator focused on privacy and no tracking. Free to use with no data collection.
   * [nitropack.io](https://nitropack.io/) - Accelerate your site's speed on autopilot with complete front-end optimization (caching, images and code optimization, CDN). Free for up to 5,000 pageviews/month
   * [npoint.io](https://www.npoint.io/) — JSON store with collaborative schema editing
+  * [MantleDB](https://mantledb.sh) — Anonymous JSON storage for scripts and tiny apps. No signup required; uses Master AID for updates and Read-Only RID for public fetching. Free tier includes 1 bucket (1MB limit) with a 72h inactivity scavenger policy.
   * [otixo.com](https://www.otixo.com/) — Encrypt, share, copy, and move all your cloud storage files from one place. The basic plan provides unlimited file transfer with 250 MB max. file size and allows five encrypted files
   * [packagecloud.io](https://packagecloud.io/) — Hosted Package Repositories for YUM, APT, RubyGem and PyPI.  Limited free plans and open-source plans are available via request
   * [pcloud.com](https://www.pcloud.com/) - Cloud storage service. Up to 10 GB of free storage