Popular MCP Servers

Run free live audience Q&A and polls from your agent: start an AskOne room, add and launch a poll, approve or hide questions and mark them answered, close the room, then read the questions as a FAQ draft and get the results. Free AI moderation. Uses an organization API token from askone.org

Concord MCP allows Claude Code, Codex, Cursor, Grok Build and Gemini to message each other in real time.

Enables AI agents to read, reply, send images, and search LINE messages by logging in as a secondary device, without official API or browser.

Connects AI agents to Yoyo, the social network for AI, enabling posting, chatting, reacting, following, and discovering other agents via MCP tools.

Enables AI assistants to read drawing-review data—projects, drawings, revisions, comments, replies, and notification inbox—through a read-only, locally run connection.

Enables AI assistants to send SMS and manage messaging workflows through ClickSend, including pricing estimates, contact lists, templates, history, and statistics.

Enables creating and deploying AI sales agents to WhatsApp and Webchat from AI coding assistants like Claude and Cursor, with automatic website research and no-code setup.

Enables AI agents to reach users on their phone through push notifications, and to raise urgent, escalating alarms that fall back to a voice call until someone acknowledges. It also ships hooks that notify users automatically when Claude Code or Codex needs input or finishes a turn.

Send and read SMS through your own Android phone via textbee.dev, the open-source SMS gateway. Three tools for Claude, Cursor, and any MCP client: send_sms, get_messages (replies, verification codes, delivery status), list_devices. Self-hosted friendly.

Exposes the Hellio Messaging API as MCP tools for SMS, OTP, voice, HLR lookup, email verification, balance, pricing, webhooks, and USSD operations.

Give AI agents a real phone number and voice. Make calls, send email, manage contacts — 26 tools, 12 resources.

Agent-native MCP server for Carly, the AI scheduling assistant. Exposes 11 tools to read and manage booking pages, event types, calendars, bookings, and available slots. Allows you to manage and create booking pages from the command line.

Connects AI assistants to BillionVerify email verification via the Model Context Protocol, supporting single and batch email verification, account balance checks, and webhook management.

Enables AI assistants to monitor ICTBroadcast outbound voice, SMS, and fax campaigns by listing campaigns, checking status, and reading summaries and per-call results, with optional start/stop control when write access is enabled.

Control your voice AI platform through natural language from any MCP-compatible assistant.

Local agent-to-agent messaging and coordination for coding sessions on one machine, through MCP and a CLI. Includes threaded mail, full-text search, per-repository agent rosters, advisory file reservations, and optional notifications. Integrations cover Claude Code, Codex, Cursor, Devin, Grok, OpenCode, and Antigravity. Standalone agents and T3 Code sessions can share the same local server.

Lets MCP-capable AI assistants interact with the Clockbook freelance marketplace through GraphQL, covering talent search, job postings, proposals, contracts, milestones and escrow, wallet, messaging, and notifications.

Enables sending web push notifications and managing Pushpad resources (notifications, subscriptions, projects, and senders) through natural language, using the Pushpad API.

Ephemeral rendezvous for agents: threads with a secret read key and a public write address that expire on time, receipts that outlive them, and an open board where agents that have never met find each other. Local runtime with fifteen MCP tools over stdio, no account, no API key.

Sendmux is an email inbox API and email API for AI agents. Use this MCP server to let authorised agents work with Sendmux mailboxes, inbound email, clean JSON parsing, webhooks, outbound sending, provider routing, logs, billing, and team controls.