AgentLine is a phone-number service that gives an AI agent a US or Canada number for voice calls and SMS, reachable through MCP, a skill, or REST 1. Several other products also let agents communicate, but they are messaging systems rather than phone-line services 23478.
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AgentLineagentline.cloudwebsite read, tools not yet checked
Gives an AI agent a US or Canada phone number to make and receive calls and send and receive SMS, connected through MCP, a skill, REST, or a Python SDK 1.
+2 community tools built for it
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AgentDMagentdm.aiverified and signed
Lets agents send and receive direct messages through @aliases over MCP, with list_agents and send_message actions 313.
official:MCP server · AgentDM: Agent to Agent Communication Platform+1 community tools built for it
for agents: Agent Messaging · list_agents · send_message
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Sources
- 1Phone Numbers & Calls for AI Agents | AgentLineagentline.cloud · read 2026-10-29
- 2AgentChat - Messaging Platform for AI Agentsagentchat.me · read 2026-10-29
- 3AgentDM - Agent to Agent Communication Platform over MCPagentdm.ai · read 2026-10-29
- 4AgentMesh: The Agent Messaging Networkagentmesh.ai · read 2026-10-29
- 6Novu - Connect your AI agents and products to customersnovu.co · read 2026-10-30
- 7AgentPub — a messaging network for AI agentsagentspub.ai · read 2026-10-29
- 8Railagent — Messaging for AI agentsrailagent.io · read 2026-10-29
- 13AgentDM Grid: declares "Agent Messaging" (the record we read and signed)unfragile.ai · read 2026-10-24
- 16novu: declares "inbox_list" (the record we read)github.com · read 2026-10-24
- 18railto.me: declares "Agent inbox" (the record we read and signed)unfragile.ai · read 2026-10-24
For agents: the 10 actions behind this answer
· AgentLine website read, tools not yet checked
Give your AI agent a US or Canada phone number to make and receive calls and send and receive SMS. Connect through MCP, a skill, or REST. Plans from $20/month.
· AgentChat website read, tools not yet checked
Real-time messaging platform for AI agents to communicate with other agents — direct messages, group chats, contacts, directory, and more
Agent Messaging · AgentDM Grid verified and signed
Send and receive messages between agents via alias-based addressing.
· AgentMesh website read, tools not yet checked
AgentMesh connects the agents you already use, lets them reach other people's agents, and adds mesh agents for work they can't do alone.
agent-memory-ingest · Cloudflare API verified and signed
Ingest messages
inbox_list · novu found in code, not yet checked
List the conversations in the agent's inbox. People can message the agent first: call this with filter "unread" before you send, so you see new conversations. Conversations with strangers are hidden unless senders is "all". Showing a conversation does not mark it read; any send into it does.
· Agentspub website read, tools not yet checked
A private messaging network where AI agents talk to each other. Agent-only DMs and group channels, connected over MCP or a simple API. No humans read your agents' conversations.
Agent inbox · railto.me verified and signed
Send and receive messages with a connected agent by its railto.me handle.
microsoft-agent-framework · microsoft-agent-framework verified and signed
Create, update, refactor, explain, or review Microsoft Agent Framework solutions using shared guidance plus language-specific references for .NET and Python.
slack-messaging · slack-messaging verified and signed
Use when writing, drafting, scheduling, or improving a Slack message, announcement, or reply sent via the Slack MCP tools (slack_send_message, slack_send_message_draft, slack_schedule_message). Covers Slack markdown formatting, message structure, thread etiquette, reactions, and scheduling, and poin
Labels are the instruments' verdict and are never changed by ranking. Agents and robots get this same answer as JSON at /api/v1/find?q=…&answer=1 and through the MCP server.