"A GitHub repository for agent guardrails" matching MCP servers:

Enables Claude to read and organize Trello boards by name, with archive-only writes and no guessing on ambiguous names.

A native Nextcloud app that exposes the instance as an MCP server so Claude and other MCP clients can read, search, and (with admin-granted permissions) edit files, notes, calendars, Deck cards, and Talk conversations. It runs inside Nextcloud with OAuth or app-password sign-in, applying each user's own Nextcloud permissions and admin-controlled per-operation grants.

A Model Context Protocol (MCP) server for Discord-based AI agent-user communication. Enables AI agents to communicate with users through Discord instead of IDE chat interfaces.

Enables multi-turn recruiting workflows by exposing tools to search jobs and candidates, fetch details, score matches, and retrieve policy, with guardrails against prompt injection and PII leakage.

An MCP server that enables AI agents to instantly convert Markdown into beautiful, ready-to-deliver Word, PDF, HTML with sidebars, and Slideshow documents, bridging the "last mile" of AI content generation.

Enables AI assistants to interact with Notion workspaces through MCP, supporting database queries, page creation, web searches, and agent workflows with human-in-the-loop task approval.

MCP server that enables AI agents to manage Dida365/TickTick tasks, projects, tags, and habits through natural language, with full CRUD, search, and advanced V2 capabilities.

Enables to manage Nextcloud files, user info, sharing, calendar, and contacts through optimized MCP tools with dynamic tool selection and enterprise-grade security.

Enables AI-powered project management by connecting Claude to Planka kanban boards via 75+ MCP tools for creating, updating, and managing projects, boards, lists, and cards.

Enables Claude to manage Apple Reminders on macOS, providing full CRUD operations such as listing, searching, creating, updating, and deleting reminders.

MCP server that enables agents to interact with Microsoft Teams by listing channels and members, and asking humans questions, with replies routed back to the agent session.

Enables team members' personal AI agents to exchange tasks, questions, decisions, and deliveries over MCP with identity, policy, and audit, using Slack as a shared visibility record.

Enables AI agents to manage n8n workflow automation instances through tools for workflow CRUD operations, execution monitoring, and webhook triggering. It facilitates programmatic interaction with n8n instances via the n8n API with AI-optimized descriptions and error handling.

Enables AI agents to send emails, create drafts in Gmail, and append content to Google Docs via standardized MCP tools.

Enables AI agents to read and edit live PowerPoint presentations on Windows through a real, visible desktop PowerPoint window, covering slides, text, shapes, notes, tables, and file operations. Supports MCP over stdio and HTTP, plus HTTP/OpenAPI and CLI access, with readback, screenshots, and a Chinese operation log for verifying results.

A robust MCP server that transforms OneNote notebooks into an AI-accessible knowledge base for Gemini Spark, enabling natural language queries to list, read, and search notes via Microsoft Graph API.

Enables Codex to operate Google Slides through a signed-in Chrome browser by providing screenshots, accessibility data, mouse/keyboard actions, image uploads, and export tracking for observe-act-verify workflows.

Enables voice-driven task management by letting users view, select, complete, and reschedule tasks through natural-language commands and a native confirmation card with date parsing and batch handling.

Enables Claude Desktop to manage a job search end-to-end: find and score job listings, tailor resumes, generate application messages, and track application history, while leaving final external actions to the user.

Enables users to chat with an LLM agent that creates and reads Word, Excel, PDF, and JSON files, and accesses databases (letters, documents, LIMS) according to user permissions.