"Remote MCP servers without authentication" matching MCP servers:

Provides MCP servers for Chinese services: holiday checking (statutory holidays and makeup workdays), WeChat push notifications via Server酱, and Baidu translation.

Enables remote Model Context Protocol clients to securely read, search, and send Signal Messenger messages through an HTTP interface backed by a personal signal-cli daemon.

Remote MCP server allowing Claude to interact with the Upvote.club API through 7 tools, supporting per-user authentication via X-API-Key header.

A remote MCP server for Google Chat, deployed on Cloudflare Workers without authentication, enabling tool execution via MCP protocol.

A collection of MCP servers for Slack, Jira, Confluence, and release coordination to automate QA workflows and daily release status reporting.

Enables AI assistants to read Apple Messages chat history and send iMessages or SMS on macOS, accessible locally via stdio or remotely over authenticated HTTP.

Enables Claude mobile and claude.ai to access your Spark Desktop mailbox by exposing the official Spark MCP server over authenticated Streamable HTTP, with safety gates for read-only and send permissions.

Enables mobile AI agents and remote clients to connect to SnowLuma OneBot v11 over Streamable HTTP/SSE, providing messaging, group management, reaction emojis, and full OneBot v11 action pass-through.

Enables AI assistants such as Claude, ChatGPT, and Cursor to query, summarize, manage, and schedule WhatsApp conversations and related contacts, groups, labels, media, reminders, and analytics through the Model Context Protocol while processing remains local in the browser extension.

Enables multi-user remote MCP interactions with Gmail, OpenAI, and Salesforce via a FastMCP server.

An MCP server for interacting with HubSpot's authentication API, enabling secure authentication and authorization operations through natural language.

Gives Claude access to Microsoft 365 mail, calendar, files, and Teams chat with per-user identity via On-Behalf-Of flow. Supports reading and drafting content, but sending is deliberately disabled.

An MCP server that enables programmatic interaction with Google Groups Migration API for importing messaging data into Google Groups, allowing users to migrate email messages from external systems.

This is an MCP Server for Trello that enables interaction with Trello's API through natural language, allowing management of boards, cards, lists, and other Trello resources.

An MCP (Multi-Agent Conversation Protocol) Server that enables interaction with the WhatsApp Business API, allowing agents to send messages, manage media, and perform other WhatsApp business operations through natural language.

Give AI agents their own email inboxes. Create, send, receive, and manage email entirely via MCP tools.

An MCP server that enables interaction with Nexmo's Messages API, allowing agents to send and manage messages across various channels via natural language commands.

An MCP Server that enables multi-agent conversation interactions with the Stellastra API, auto-generated using AG2's MCP builder.

A Multi-Agent Conversation Protocol server that enables interaction with the Sakari.io API, auto-generated using AG2's MCP builder for simplified natural language access to Sakari's messaging services.

A Model Context Protocol server that enables LLMs to interact with Slack workspaces through OAuth 2.0 authentication. It provides tools for listing channels and posting messages while supporting secure token persistence and dynamic client registration.