"A tool or resource for improving prompt writing" matching MCP servers:

Enables secure one-time encrypted file and note sharing by encrypting data locally before upload and providing tools for sending, listing, checking, and revoking links.

An MCP server that gives an AI agent controlled access to a Selectel cloud account: OpenStack cloud servers, S3 object storage, and account billing.

A Model Context Protocol server that provides seamless access to multiple storage services including S3, Azure Blob Storage, and Google Cloud Storage through Apache OpenDAL™.

Enables monitoring shared Google storage quota and recovering Gmail space by scanning cleanup candidates, scoring them deterministically, and requiring review before moving non-protected messages to Trash.

Enables editing existing Docs, Sheets, and Slides in place, plus commenting, sharing, moving, and exporting files with native Google URLs returned. Provides 29 tools across Drive, Docs, Sheets, and Slides, using OAuth keys kept locally in ~/.gdrive-mcp/.

MCP server giving Claude access to Tuta mail, calendar, contacts and drive. Supports mail modes (dedicated/shared/folder), trusted sender filtering with E2E verification, and Docker-based setup.

Enables ChatGPT to list, search, and read files from a user's Google Drive—including Docs, Sheets, Slides, and text files—through read-only Google OAuth access.

Enables MCP-compatible AI assistants to manage iDrive backup/restore operations, including listing devices, browsing and downloading backed-up files, and performing mutations like creating folders, deleting files, or restoring from trash.

Enables creating storage buckets and uploading media files to Supabase Storage through natural language, with no delete or overwrite capabilities.

Enables AI agents to work with a user's Google Photos through Google's picker, letting users choose exactly what the agent sees while providing tools for uploading media, creating and sharing albums, writing captions and enrichments, searching app-created media, and managing multiple Google accounts.

Enables file operations (upload, download, list, delete) on Cloudflare R2 (S3-compatible) storage, with dedicated APK upload tool.

MCP server for Backblaze B2 Cloud Storage: a focused, safe 40-tool surface (17 native B2 SDK, 19 S3 data-plane, 4 analytics) for any MCP-compatible AI client, currently incubating in Backblaze-Labs

Enables AI assistants to interact with Seafile cloud storage for managing self-hosted files and directories. It supports operations such as reading, writing, moving, and searching across libraries using either account-based or library-specific authentication.

Enables local MCP server for reading, writing, creating Google Sheets and charts via OAuth, acting as the logged-in user without manual sharing.

Enables Google Workspace administration (Directory, Gmail, Drive, Sheets) via MCP using Domain-Wide Delegation for secure, schema-validated tool operations.

Lets MCP clients publish a single file to a permanent, shareable link via whamlink. Supports tools for managing links, including registration, publishing, listing, updating access, replacing content, and deleting links.

The CHUK MCP S3 Bucket Manager is a Python-based tool for managing Amazon S3 buckets using the MCP runtime. This utility provides a simple interface for listing, creating, and deleting S3 buckets.

This server provides tools for uploading images and videos directly to Cloudinary using Claude/Cline, facilitating resource management with customizable options like resource type and public ID.

MCP server for reading and writing data files (Excel, PDF, CSV, JSON, text) with safe write rules and provenance tracking.

Harnios is a self-hosted, MCP-based storage system that gives every AI assistant you use — Claude, ChatGPT, Cursor, or anything else — a shared, persistent memory of your business: knowledge base, skills, projects, operational tables, and reports, all in one place. Connect a new tool once, and it reads and writes through the same store instead of starting from zero.