File attachment handling for XMTP agents. Use when sending or receiving images, files, or any encrypted remote attachments. Triggers on file upload, image sending, or remote attachment handling.
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Handle file attachments using encrypted remote attachments. Files are encrypted locally, uploaded to your storage provider, and sent as a remote attachment message.
Reference these guidelines when:
| Priority | Category | Impact | Prefix |
|---|---|---|---|
| 1 | Send | CRITICAL | send- |
| 2 | Receive | CRITICAL | receive- |
| 3 | Upload | HIGH | upload- |
send-remote-attachment - Send encrypted file attachmentsreceive-attachment - Download and decrypt attachmentsupload-callback - Implement custom upload storage (Pinata, S3, etc.)import {
type AttachmentUploadCallback,
downloadRemoteAttachment,
} from "@xmtp/agent-sdk";
// Send an attachment
const file = new File(["Hello, World!"], "hello.txt", { type: "text/plain" });
await ctx.conversation.sendRemoteAttachment(file, uploadCallback);
// Receive an attachment
agent.on("attachment", async (ctx) => {
const attachment = await downloadRemoteAttachment(ctx.message.content);
console.log(`Received: ${attachment.filename}`);
});
Read individual rule files for detailed explanations:
rules/send-remote-attachment.md
rules/receive-attachment.md
rules/upload-callback.md
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Core XMTP Agent SDK setup and patterns. Use when creating new agents, handling messages, setting up middleware, or configuring environment variables. Triggers on agent setup, XMTP configuration, message handling, or middleware implementation.
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Interactive button-based UI for XMTP agents following XIP-67. Use when creating menus, confirmation dialogs, selection options, or any button-based interaction. Triggers on inline actions, buttons, menus, or ActionBuilder.
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Patterns for handling commands, validating input, and filtering messages in XMTP agents. Use when implementing slash commands, validators, or message filters. Triggers on command handling, input validation, or type guards.
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Token transactions and wallet integration for XMTP agents. Use when sending USDC, creating transaction requests, or handling transaction confirmations. Triggers on USDC transfer, wallet calls, or transaction reference.
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Group conversation management for XMTP agents. Use when creating groups, managing members, setting permissions, or sending welcome messages. Triggers on group creation, member management, or permissions.
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ENS and Web3 identity resolution for XMTP agents. Use when resolving domain names, extracting mentions, or fetching Farcaster profiles. Triggers on ENS resolution, Farcaster lookup, or mention extraction.
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