openclaw - 💡(How to fix) Fix Discord image attachments not passing URL to image analysis tool [1 participants]

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openclaw/openclaw#53714Fetched 2026-04-08 01:24:27
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Error Message

Error message:

Code Example

Local media path is not under an allowed directory: attachment
RAW_BUFFERClick to expand / collapse

Problem

When a user sends an image attachment via Discord, the image tool receives only the placeholder string attachment instead of the actual Discord CDN URL. This prevents the image from being analyzed.

Error message:

Local media path is not under an allowed directory: attachment

Expected Behavior

When a Discord user uploads an image, the provider should extract the actual CDN URL (e.g., https://cdn.discordapp.com/attachments/...) and pass it to the image tool so the model can analyze it.

Current Behavior

The image tool receives attachment as the path parameter, which is not a valid URL or file path, causing the analysis to fail.

Environment

  • OpenClaw with Discord provider
  • Image analysis via image tool

Suggested Fix

The Discord provider should resolve attachment placeholders to their actual CDN URLs before passing them to tools that expect image paths/URLs.

extent analysis

Fix Plan

To resolve the issue, we need to modify the Discord provider to extract the actual CDN URL from the attachment placeholder.

  • Update the Discord provider to parse the message content and extract the attachment URL.
  • Use the Discord API to fetch the attachment URL if it's not directly available in the message content.

Example Code

import discord
from discord.ext import commands

# Assuming 'bot' is an instance of commands.Bot
@bot.event
async def on_message(message):
    # Check if the message has attachments
    if message.attachments:
        # Iterate over the attachments
        for attachment in message.attachments:
            # Get the attachment URL
            url = attachment.url
            
            # Pass the URL to the image tool for analysis
            await analyze_image(url)

async def analyze_image(url):
    # Implement the image analysis logic here
    # For example:
    async with aiohttp.ClientSession() as session:
        async with session.get(url) as response:
            image_data = await response.read()
            # Analyze the image data
            # ...

Verification

To verify that the fix worked, send an image attachment via Discord and check if the image tool receives the actual CDN URL. You can add logging statements to the analyze_image function to print the received URL and verify that it's correct.

Extra Tips

  • Make sure to handle errors and exceptions properly when fetching the attachment URL and analyzing the image.
  • Consider adding a cache to store the attachment URLs to avoid fetching them repeatedly.
  • Refer to the Discord API documentation for more information on working with attachments and messages.

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openclaw - 💡(How to fix) Fix Discord image attachments not passing URL to image analysis tool [1 participants]