Add automatic log cleanup or archiving to prevent excessive disk usage

[happysurfingeveryday-art]

Description

During system maintenance, I found that log files generated by opencode are consuming a very large amount of disk space. For example, a single log file (2026-02-10T035006.log) takes up 74.8 GB, and the total size of logs under .local/share/opencode/log/ exceeds 100 GB. This can quickly fill up the disk and impact system performance, especially on systems with limited storage.

Environment:

OS: Windows 11

Project version: Latest opencode

Log path: AppData/Local/opencode/log/

Plugins

No response

OpenCode version

No response

Steps to reproduce

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Screenshot and/or share link

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Operating System

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Terminal

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[github-actions]

This issue doesn't fully meet our contributing guidelines.

What needs to be fixed:

• The Bug Report template has required fields with placeholder text (Steps to reproduce, Operating System, Terminal, OpenCode version) - please fill these in with actual information
• While you provided useful context in the Description, the specific reproduction steps and system information should be in their respective template fields for proper tracking

Please edit this issue to address the above within 2 hours, or it will be automatically closed.

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This issue might be a duplicate of existing issues. Please check:

• 玩我呢，才运行10分钟，就把我的C盘干崩溃了 #8096: 60GB storage issue on Windows with similar massive log file consumption
• Excessive Informational Logging Clutters Log Files in Default Configuration #5004: Excessive logging causing log file clutter
• Opencode using my 20 GB storage #10532: General OpenCode storage bloat (20 GB)

If you believe this was flagged incorrectly, please let a maintainer know.

[github-actions]

This issue has been automatically closed because it was not updated to meet our contributing guidelines within the 2-hour window.

Feel free to open a new issue that follows our issue templates.

[sunshinewithmoonlight]

Same to me.

[padi]

@sunshinewithmoonlight @happysurfingeveryday-art

open the log in Sublime Text or some other fast editor (Notepad maybe) to see what's going on.

In my case, opencode was loading up a ton of skills I accidentally downloaded from a very large skill repo (e.g. https://github.com/sickn33/antigravity-awesome-skills), most of which I don't use.

Most of the logs contained this:

And I copied the JSON out of each line, formatted it in a new tab, and each line contained around 7k lines of JSON.

around 12k unformated lines of the same thing led to around 2GB of log file (I've had larger ones up to 50+GB, but this was the easiest to open)

The solution for me is to remove all the agents I don't use. Perhaps don't install everything on the global ~/.agents/skills folder.

Some of the people reading this may have done the same.