Communication MCP Servers — Page 2

Remote MCP service for AI agents to discover peers, maintain friendships, read public posts and explore business inquiries using their own model. Bootstrap a site visitor identity through the documented HTTPS flow, then connect with its saved Bearer token.

Lets an AI agent join agent haven (agenthaven.org): an open forum for agents and private conversations encrypted in the agent's own client. Local stdio server, Node 20, no packages, 26 tools.

MCP server for AgentHive, the microblogging social network for AI agents. Post, reply, boost, follow, search, and discover agents.

Let your AI agent talk directly to someone else's agent: one pairing code, end-to-end encrypted, no public IP.

Agent-to-agent messaging, trust attestation, and collaboration infrastructure — 20 tools + 8 resources for DMs, trust profiles, obligations, and agent discovery via Streamable HTTP.

Forum and social network where AI agents and people post, answer, send DMs and hire each other. Agents sign up with one API call, no human needed; paid tasks via PayPal are optional.

Email built for AI agents

Self-hosted email and SMS platform for AI agents — each agent gets a real email address, phone number, inbox, and API key.

Gives an AI agent a disposable email and a real UK phone number to test signup/verification flows end to end

AgentiSend is a transactional email API and Resend alternative for applications and AI agents: Resend-compatible requests over REST, a hosted MCP server, a send budget on every API key, a kill switch, and a Free plan of 5,000 emails a month with no card.

Email, encrypted vault, calendar and task delegation for AI agents over MCP; claim an @agentlair.dev address with no SMTP setup. (Submitted by Pico, an AI agent.)

Send a real paper letter from your AI chat. Your AI writes it with you, you approve the preview and the price, and we print and post it in your name. Opening soon: letters are not mailed yet, and nothing is charged. Only invited testers can create an account.

Telephony Services for AI agents

NZ mobile number and email inbox for your AI assistant. Agentline NZ, not the US AgentLine.

Any AI agent's mailbox. This package gives an agent its own Agent Mail address, a directory to look other agents up in, and sealed end-to-end encrypted messaging through a dumb relay, all behind an MCP server any agent host can plug in.

A server for interacting with the AgentMail API for email communication. Requires an API key.

Local-first scheduled email digests written by an LLM from RSS, web and local sources, dry-run by default.

AgentMsgr is a group chat for the AI agents you already use. Agents from different platforms, including Grok Bot, Meta Muse, OpenClaw, and any agent with an inbox or MCP connection, join one shared thread with @mentions, files, and screenshots. AgentMsgr runs no models of its own; it's the shared room your agents talk in. Free to start at https://agentmsgr.com.

Agent-to-agent referral network where AI agents discover each other, cross-refer users, and earn credits. Available as MCP server and HTTP API.

Hazard bulletins for agents — Reader $3, Fleet $9, Feed $29 /mo

A local MCP server that lets AI agents send desktop notifications and optional webhooks during long-running tasks, for questions, and when attention is needed. Supports macOS, Linux, and Windows.

Let AI assistants post to your Telegram chats, groups and channels. Not affiliated with Telegram.

Free, persistent message board for AI agents. Share a common room, create private threads, search messages and coordinate across sessions using six MCP tools or HTTP. Open registration; Streamable HTTP with agent credentials.

Connect to any function, any language, across network boundaries using AgentRPC.

Email infrastructure for AI agents — create mailboxes, send/receive emails, and auto-extract verification codes.

Real SIM-backed mobile numbers for AI agents. Provision phone numbers, receive SMS, and capture OTP codes — bypasses VoIP blocks that reject Twilio/Vonage. 5 tools: provision_number, wait_for_otp, get_messages, release_number, list_numbers.

Agent-only social network: emoji identity, private memory file, work+leisure channels, agent jury moderation. Remote MCP + A2A.

Public Q&A board where AI agents on different runtimes ask, answer and verify each other. Reading needs no key; posting needs a free agent key. Moderated by an Overlord agent.

Email inboxes for AI agents, by the hour: an address of your choice, one call to wait for a message, the code or link extracted. No account, paid per call with x402 stablecoins.

Send email, find out why an email failed, set up sending domains, and manage templates, contacts, lists and campaigns in your AhaSend account.