Claude Sonnet started to write logs and instructions to /tmp directory

Description

I'm nto sure what is happening but. I started using Open Code after a break.

It ask permission to access /tmp directory. First it write instructions using format:

cat > /tmp/note-switch-fix.md << 'EOF'

Markdown
EOF
cat /tmp/note-switch-fix.md

Which require permission, so the agent stops working.

When I asked it to not do that, after compression it do this again with log files from the app.

I don't have any instructions about using /tmp directory. Claude never do that before.

Is this a bug in system prompt?

Plugins

No response

OpenCode version

1.1.63

Steps to reproduce

No response

Screenshot and/or share link

No response

Operating System

Fedora 43

Terminal

No response

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

Allow writes to /tmp by default without permission prompt #5386: Allow writes to /tmp by default without permission prompt
[FEATURE]: allow /tmp or $TMPDIR folder access option #4743: [FEATURE]: allow /tmp or $TMPDIR folder access option
can not start opencode on ubuntu /tmp does not allow execution of .so #5175: /tmp does not allow execution of .so (Ubuntu-specific)
opencode creates identical temp files everytime it runs #6523: opencode creates identical temp files everytime it runs
[ROOT CAUSE ANALYSIS] tmp_pack Leak - Complete Code Analysis & Fix Recommendations #10034: [ROOT CAUSE ANALYSIS] tmp_pack Leak - Complete Code Analysis

These issues address similar concerns about /tmp access, temporary file handling, and permission prompts. Your issue (#13376) appears to be a new manifestation where the AI model's behavior is triggering /tmp write requests. The underlying /tmp permission friction may already be tracked in the issues above.

can u send ur session perhaps?

can u share:

opencode debug config

{
  "$schema": "https://opencode.ai/config.json",
  "keybinds": {
    "leader": "ctrl+x",
    "app_exit": "ctrl+c,ctrl+d,<leader>q",
    "editor_open": "<leader>e",
    "theme_list": "<leader>t",
    "sidebar_toggle": "<leader>b",
    "scrollbar_toggle": "none",
    "username_toggle": "none",
    "status_view": "<leader>s",
    "session_export": "<leader>x",
    "session_new": "<leader>n",
    "session_list": "<leader>l",
    "session_timeline": "<leader>g",
    "session_fork": "none",
    "session_rename": "ctrl+r",
    "session_delete": "ctrl+d",
    "stash_delete": "ctrl+d",
    "model_provider_list": "ctrl+a",
    "model_favorite_toggle": "ctrl+f",
    "session_share": "none",
    "session_unshare": "none",
    "session_interrupt": "escape",
    "session_compact": "<leader>c",
    "messages_page_up": "pageup,ctrl+alt+b",
    "messages_page_down": "pagedown,ctrl+alt+f",
    "messages_line_up": "ctrl+alt+y",
    "messages_line_down": "ctrl+alt+e",
    "messages_half_page_up": "ctrl+alt+u",
    "messages_half_page_down": "ctrl+alt+d",
    "messages_first": "ctrl+g,home",
    "messages_last": "ctrl+alt+g,end",
    "messages_next": "none",
    "messages_previous": "none",
    "messages_last_user": "none",
    "messages_copy": "<leader>y",
    "messages_undo": "<leader>u",
    "messages_redo": "<leader>r",
    "messages_toggle_conceal": "<leader>h",
    "tool_details": "none",
    "model_list": "<leader>m",
    "model_cycle_recent": "f2",
    "model_cycle_recent_reverse": "shift+f2",
    "model_cycle_favorite": "none",
    "model_cycle_favorite_reverse": "none",
    "command_list": "ctrl+p",
    "agent_list": "<leader>a",
    "agent_cycle": "tab",
    "agent_cycle_reverse": "shift+tab",
    "variant_cycle": "ctrl+t",
    "input_clear": "ctrl+c",
    "input_paste": "ctrl+v",
    "input_submit": "return",
    "input_newline": "Shift+Enter",
    "input_move_left": "left,ctrl+b",
    "input_move_right": "right,ctrl+f",
    "input_move_up": "up",
    "input_move_down": "down",
    "input_select_left": "shift+left",
    "input_select_right": "shift+right",
    "input_select_up": "shift+up",
    "input_select_down": "shift+down",
    "input_line_home": "ctrl+a",
    "input_line_end": "ctrl+e",
    "input_select_line_home": "ctrl+shift+a",
    "input_select_line_end": "ctrl+shift+e",
    "input_visual_line_home": "alt+a",
    "input_visual_line_end": "alt+e",
    "input_select_visual_line_home": "alt+shift+a",
    "input_select_visual_line_end": "alt+shift+e",
    "input_buffer_home": "home",
    "input_buffer_end": "end",
    "input_select_buffer_home": "shift+home",
    "input_select_buffer_end": "shift+end",
    "input_delete_line": "ctrl+shift+d",
    "input_delete_to_line_end": "ctrl+k",
    "input_delete_to_line_start": "ctrl+u",
    "input_backspace": "backspace,shift+backspace",
    "input_delete": "ctrl+d,delete,shift+delete",
    "input_undo": "ctrl+-,super+z",
    "input_redo": "ctrl+.,super+shift+z",
    "input_word_forward": "alt+f,alt+right,ctrl+right",
    "input_word_backward": "alt+b,alt+left,ctrl+left",
    "input_select_word_forward": "alt+shift+f,alt+shift+right",
    "input_select_word_backward": "alt+shift+b,alt+shift+left",
    "input_delete_word_forward": "alt+d,alt+delete,ctrl+delete",
    "input_delete_word_backward": "ctrl+w,ctrl+backspace,alt+backspace",
    "history_previous": "up",
    "history_next": "down",
    "session_child_cycle": "none",
    "session_child_cycle_reverse": "none",
    "session_parent": "<leader>up",
    "terminal_suspend": "ctrl+z",
    "terminal_title_toggle": "none",
    "tips_toggle": "<leader>h",
    "display_thinking": "none"
  },
  "plugin": [
    "opencode-skills"
  ],
  "mcp": {
    "context7": {
      "type": "remote",
      "url": "https://mcp.context7.com/mcp",
      "enabled": true,
      "headers": {
        "CONTEXT7_API_KEY": "ctx7sk-37e7f1db-ad21-4e1f-9b76-87f52248fed2"
      }
    },
    "DeepWiki": {
      "type": "remote",
      "url": "https://mcp.deepwiki.com/mcp",
      "enabled": true
    },
    "chrome-devtools": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "chrome-devtools-mcp@latest"
      ],
      "enabled": true
    },
    "Better Auth": {
      "type": "remote",
      "url": "https://mcp.chonkie.ai/better-auth/better-auth-builder/mcp",
      "enabled": true
    },
    "chakra-ui": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@chakra-ui/react-mcp"
      ],
      "enabled": true
    },
    "playwright": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@playwright/mcp@latest"
      ],
      "enabled": true
    },
    "github": {
      "type": "remote",
      "url": "https://api.githubcopilot.com/mcp/",
      "enabled": false
    },
    "10x-mvp-tracker": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@przeprogramowani/10x-mvp-tracker"
      ],
      "enabled": false
    }
  },
  "permission": {
    "bash": {
      "*": "allow",
      "sudo *": "ask",
      "git *": "ask",
      "git checkout *": "allow",
      "git status*": "allow",
      "git diff*": "allow",
      "git log*": "allow",
      "git show*": "allow",
      "git branch*": "allow",
      "git remote -v *": "allow",
      "git ls-files*": "allow"
    }
  },
  "agent": {},
  "mode": {},
  "command": {},
  "username": "kuba"
}

I' have skill installed for OpenTUI.

Hm yeah I havent seen this behavior before, maybe something in ur context of that convo confused it

I don't see the beginning of the conversation in the instance that is running. The first message when scrolling to the top is:

Good! Now let me verify there are no TypeScript errors:

ANd below there is:

# Start dev server in background
$ npm run dev > /tmp/dev-server.log 2>&1 & echo $! > /tmp/dev-server.pid && sleep 8 && echo "Server started"
Server started

in AGENTS.md I have this info:

**Agent Command**: `npm run test:e2e:docker 2>&1 | tee e2e.log` (saves log + displays output)
**Long-running commands**: Always use `tee` to save output to a log file, then read the last N lines with `tail -n 100 logfile.log`. Never pipe directly to `tail` or `head` - you won't see output.

But it never used the /tmp directory before. He only used a project directory.

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Claude Sonnet started to write logs and instructions to /tmp directory #13376

Description

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Operating System

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Claude Sonnet started to write logs and instructions to /tmp directory #13376

Description

Description

Plugins

OpenCode version

Steps to reproduce

Screenshot and/or share link

Operating System

Terminal

Activity

github-actions commented on Feb 12, 2026

rekram1-node commented on Feb 12, 2026

jcubic commented on Feb 12, 2026

rekram1-node commented on Feb 13, 2026

jcubic commented on Feb 13, 2026

github-actions commented on Apr 14, 2026

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