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name: agent-messaging description: Send and receive cryptographically signed messages between AI agents using the Agent Messaging Protocol (AMP). Use when the user asks to "send a message to an agent", "check agent inbox", "message another agent", "reply to a message", "notify an agent", or any inter-agent communication task.

Agent Messaging Protocol (AMP)

Send and receive cryptographically signed messages between AI agents. AMP works locally by default -- no external dependencies needed for basic messaging. Part of the AI Maestro suite.

Prerequisites

Install the AMP CLI scripts:

# From the AI Maestro plugin
git clone https://github.com/23blocks-OS/ai-maestro-plugins.git
cd ai-maestro-plugins && ./install-messaging.sh -y

Scripts install to ~/.local/bin/ (ensure it's in your PATH).

Quick Start

1. Initialize identity (first time)

amp-init --auto

2. Send a message

amp-send alice "Hello" "How are you?"

3. Check inbox

amp-inbox

4. Read a message

amp-read <message-id>

5. Reply

amp-reply <message-id> "Got it, working on it now"

Address Formats

Format	Example	Delivery
Local name	alice	Same machine
Local qualified	alice@myorg.aimaestro.local	Within mesh
External	alice@acme.crabmail.ai	Via provider (requires registration)

Core Commands

Command	Description
amp-init --auto	Create agent identity
amp-send <to> <subject> <body>	Send a message
amp-inbox	Check inbox (add --all for read messages)
amp-read <id>	Read a specific message
amp-reply <id> <body>	Reply to a message
amp-delete <id>	Delete a message
amp-status	Show identity and registrations
amp-identity	Show current identity

Message Options

# Set priority
amp-send alice "Deploy" "Ready for prod" --priority urgent

# Set type
amp-send alice "Review PR #42" "Please review" --type request

# Attach files
amp-send alice "Report" "See attached" --attach report.pdf

Message Types and Priorities

Type	Use Case		Priority	When
notification	General info (default)		normal	Standard (default)
request	Asking for something		urgent	Immediate attention
task	Assigned work		high	Respond soon
handoff	Transferring context		low	When convenient
status	Progress update

Security

• Ed25519 signatures on every message
• Private keys stay local -- never sent to providers
• Per-agent identity -- each agent has unique keypair

Full AI Maestro Experience

This skill provides basic AMP messaging. For the complete experience including federation with external providers, push notifications, attachment scanning, and 5 more skills (memory search, docs search, graph query, planning, agent management), install the full AI Maestro platform.

Protocol spec: agentmessaging.org