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name: xmtp-agents description: > Building and extending XMTP agents with the Agent SDK. Use when: (1) creating or configuring an XMTP agent, (2) implementing agent features (commands, attachments, reactions, groups, transactions, inline actions, or domain resolution). license: MIT metadata: author: xmtp version: "1.0.0"

XMTP agents

Build event-driven messaging agents on the XMTP network. This skill is the entry point; use the sub-skills below for specific features.

When to apply

• Starting or configuring a new XMTP agent
• Adding behavior: commands, attachments, reactions, groups, payments, inline actions, or address/domain resolution

Sub-skills

Sub-skill	Use when
building-agents	Setup, env vars, text/lifecycle events, middleware
handling-commands	Slash commands, validators, message filters, type guards
handling-attachments	Send/receive files, remote attachments, upload storage
sending-reactions	Send or receive reactions, thinking/reply patterns
managing-groups	Create groups, add members, roles, welcome-on-install
handling-transactions	USDC transfers, balance checks, transaction references
creating-inline-actions	Inline actions, confirmation/selection helpers, config menus
resolving-domains	Resolve addresses, Farcaster profiles, extract mentions

How to use

1. Pick the sub-skill that matches the task (e.g. slash commands → handling-commands).
2. Read that sub-skill’s SKILL.md and its rules/ for step-by-step guidance.
3. For SDK or API details, use the xmtp-docs skill (index + specific page fetch).

Quick start

Install the Agent SDK, create an agent from env, handle text, then start:

npm install @xmtp/agent-sdk

Create the agent and handle messages using patterns from building-agents (setup, events, middleware). For commands, attachments, reactions, groups, transactions, inline actions, or resolution, use the corresponding sub-skill above.