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handling-attachments

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.

The English summary is being prepared. Showing the original description.

See how to install

Files included (4)

  • SKILL.md1.8 KB
  • rules/receive-attachment.md1.2 KB
  • rules/send-remote-attachment.md1.1 KB
  • rules/upload-callback.md1.6 KB

SKILL.md (original)

Review the instructions the agent will receive before you install.

XMTP attachments

Handle file attachments using encrypted remote attachments. Files are encrypted locally, uploaded to your storage provider, and sent as a remote attachment message.

When to apply

Reference these guidelines when:

  • Sending files or images from an agent
  • Receiving and downloading attachments
  • Implementing custom upload storage
  • Working with encrypted file transfers

Rule categories by priority

PriorityCategoryImpactPrefix
1SendCRITICALsend-
2ReceiveCRITICALreceive-
3UploadHIGHupload-

Quick reference

Send (CRITICAL)

  • send-remote-attachment - Send encrypted file attachments

Receive (CRITICAL)

  • receive-attachment - Download and decrypt attachments

Upload (HIGH)

  • upload-callback - Implement custom upload storage (Pinata, S3, etc.)

Quick start

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}`);
});

How to use

Read individual rule files for detailed explanations:

rules/send-remote-attachment.md
rules/receive-attachment.md
rules/upload-callback.md

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