Opencode Troubleshooting

OpenCode Troubleshooting

> 📚 Official Docs: For the latest information, always refer to the official documentation: > https://opencode.ai/docs/troubleshooting/

OpenCode is an AI-powered coding assistant available as a CLI, TUI, web interface, and desktop app. When something goes wrong — the app won't start, models fail to load, authentication breaks, or the UI is unresponsive — this skill provides comprehensive diagnostic and resolution procedures. Start by checking logs and storage, then work through the specific issue category.

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Table of Contents

• [Logs](#logs)
• [Storage](#storage)
• [Desktop App Troubleshooting](#desktop-app-troubleshooting)
• [Quick Checks](#quick-checks)
• [Disable Plugins](#disable-plugins)
• [Clear the Cache](#clear-the-cache)
• [Fix Server Connection Issues](#fix-server-connection-issues)
• [Linux: Wayland / X11 Issues](#linux-wayland--x11-issues)
• [Windows: WebView2 Runtime](#windows-webview2-runtime)
• [Windows: General Performance Issues](#windows-general-performance-issues)
• [Notifications Not Showing](#notifications-not-showing)
• [Reset Desktop App Storage (Last Resort)](#reset-desktop-app-storage-last-resort)
• [Common Issues](#common-issues)
• [OpenCode Won't Start](#opencode-wont-start)
• [Authentication Issues](#authentication-issues)
• [Model Not Available](#model-not-available)
• [ProviderInitError](#provideriniterror)
• [AIAPICallError and Provider Package Issues](#aiapicallerror-and-provider-package-issues)
• [Copy/Paste Not Working on Linux](#copypaste-not-working-on-linux)
• [CLI Debugging Tools](#cli-debugging-tools)
• [Getting Help](#getting-help)

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Logs

Log files are the first place to look when diagnosing any issue with OpenCode. They contain detailed information about startup, provider connections, API calls, errors, and internal state transitions.

Log File Locations

| Platform | Path | |----------|------| | macOS | ~/.local/share/opencode/log/ | | Linux | ~/.local/share/opencode/log/ | | Windows | Press WIN+R and paste %USERPROFILE%\.local\share\opencode\log |

Log File Naming

Log files are named with timestamps in the format YYYY-MM-DDTHHMMSS.log. For example:

2025-01-09T123456.log
2025-01-09T143022.log
2025-01-10T090015.log

OpenCode keeps the most recent 10 log files on disk. Older log files are automatically pruned.

Log Levels

Control log verbosity with the --log-level command-line flag:

opencode --log-level DEBUG

Available log levels (from least to most verbose):

• ERROR — Only errors
• WARN — Warnings and errors
• INFO — Informational messages (default)
• DEBUG — Full debug output

Printing Logs to Terminal

Use --print-logs to stream log output directly to the terminal instead of writing to files:

opencode --print-logs

This is useful when:

• Log files aren't being written (permissions issue, disk full)
• You want real-time output alongside terminal interaction
• Debugging startup issues where the process exits before writing logs

Reading Log Files

To view the most recent log file:

# List log files sorted by modification time (newest first)
ls -lt ~/.local/share/opencode/log/ | head -10

# View the most recent log
cat "$(ls -t ~/.local/share/opencode/log/*.log | head -1)"

On Windows (PowerShell):

Get-ChildItem "$env:USERPROFILE\.local\share\opencode\log" | Sort-Object LastWriteTime -Descending | Select-Object -First 5
Get-Content (Get-ChildItem "$env:USERPROFILE\.local\share\opencode\log\*.log" | Sort-Object LastWriteTime -Descending | Select-Object -First 1).FullName

What to Look For in Logs

• Startup errors: Missing dependencies, port conflicts, configuration parse failures
• Provider errors: API key validation, rate limits, model availability, network timeouts
• Plugin errors: Failed loads, compatibility issues, unhandled exceptions
• File system errors: Permission denied, disk full, missing directories
• Network errors: Connection refused, DNS resolution failures, TLS/SSL errors
• Session errors: Message processing failures, context window overflow

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Storage

OpenCode stores persistent application data on disk, including authentication credentials, session history, and project-specific state.

Storage Locations

| Platform | Path | |----------|------| | macOS | ~/.local/share/opencode/ | | Linux | ~/.local/share/opencode/ | | Windows | Press WIN+R and paste %USERPROFILE%\.local\share\opencode |

Storage Contents

| Path | Description | |------|-------------| | opencode.db | SQLite database — primary data store for sessions, messages, and state | | snapshot/ | Git-like repo for file change tracking | | storage/ | Session data and internal state | | log/ | Application log files (see [Logs](#logs)) |

Additional Data Directories

OpenCode also uses these directories for different purposes:

| Directory | Description | |-----------|-------------| | ~/.local/state/opencode/ | Runtime state — model.json, prompt-history.jsonl, kv.json | | ~/.cache/opencode/ | Provider packages, binaries, and cached data |

Clearing Storage

To completely reset all OpenCode data (sessions, auth, logs):

rm -rf ~/.local/share/opencode

On Windows (PowerShell):

Remove-Item -Recurse -Force "$env:USERPROFILE\.local\share\opencode"

Warning: This removes all sessions, authentication data, and logs. You will need to re-authenticate with your providers.

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Desktop App Troubleshooting

OpenCode Desktop runs a local OpenCode server (the opencode-cli sidecar) in the background. Most issues are caused by a misbehaving plugin, a corrupted cache, or a bad server setting.

Quick Checks

Before diving into detailed troubleshooting, try these rapid fixes:

1. Fully quit and relaunch the app. On macOS, right-click the Dock icon and select Quit. On Windows, right-click the system tray icon and select Exit. Then relaunch.
2. Click Restart. If the app shows an error screen, click the Restart button and copy the error details for debugging.
3. Reload Webview (macOS only). Click OpenCode menu → Reload Webview. This resolves blank or frozen UI without restarting the entire app.

Disable Plugins

If the desktop app crashes on launch, hangs, or behaves strangely, start by disabling plugins.

Check the Global Config

Open your global config file and look for a plugin key:

• macOS/Linux: ~/.config/opencode/opencode.jsonc (or ~/.config/opencode/opencode.json)
• macOS/Linux (older installs): ~/.local/share/opencode/opencode.jsonc
• Windows: Press WIN+R and paste %USERPROFILE%\.config\opencode\opencode.jsonc

Temporarily disable all plugins by setting plugin to an empty array:

{
  "$schema": "https://opencode.ai/config.json",
  "plugin": []
}

Check Plugin Directories

OpenCode loads local plugins from disk. Temporarily move these directories out of the way and restart:

Global plugins:

• macOS/Linux: ~/.config/opencode/plugins/
• Windows: Press WIN+R and paste %USERPROFILE%\.config\opencode\plugins

Project plugins (per-project config):

• /.opencode/plugins/

If the app works after disabling, re-enable plugins one at a time to identify the culprit.

Clear the Cache

If disabling plugins doesn't help (or a plugin install is stuck), clear the cache so OpenCode can rebuild it.

1. Quit OpenCode Desktop completely.
2. Delete the cache directory:

| Platform | Path | |----------|------| | macOS | Finder → Cmd+Shift+G → paste ~/.cache/opencode | | Linux | rm -rf ~/.cache/opencode | | Windows | Press WIN+R and paste %USERPROFILE%\.cache\opencode |

1. Restart OpenCode Desktop.

OpenCode will recreate the cache directory with fresh data on next launch.

Fix Server Connection Issues

OpenCode Desktop can either start its own local server (default) or connect to a server URL you configured. If you see a "Connection Failed" dialog or the app never gets past the splash screen, check for a custom server URL.

Clear the Desktop Default Server URL

From the Home screen, click the server name (with the status dot) to open the Server picker. In the Default server section, click Clear.

Remove server.port / server.hostname from Config

If your opencode.json(c) contains a server section, temporarily remove it and restart:

{
  "$schema": "https://opencode.ai/config.json"
  // "server": { "port": 4096, "hostname": "0.0.0.0" }
}

Check Environment Variables

If OPENCODE_PORT is set in your environment, the desktop app will try to use that port for the local server. Unset it (or pick a free port) and restart:

unset OPENCODE_PORT

On Windows (PowerShell):

Remove-Item Env:OPENCODE_PORT

Linux: Wayland / X11 Issues

On Linux, some Wayland setups can cause blank windows or compositor errors.

• If you're on Wayland and the app is blank/crashing, try launching with:

OC_ALLOW_WAYLAND=1 opencode

• If that makes things worse, remove it and try launching under an X11 session instead. Most desktop environments allow switching between Wayland and X11 at the login screen.

• To check which display server you're using:

echo $XDG_SESSION_TYPE

Windows: WebView2 Runtime

On Windows, OpenCode Desktop requires the Microsoft Edge WebView2 Runtime. If the app opens to a blank window or won't start:

1. Check if WebView2 is installed: open Settings → Apps → search for "WebView2"
2. If not installed or outdated, download from: https://developer.microsoft.com/en-us/microsoft-edge/webview2/
3. Install and restart OpenCode Desktop

Windows: General Performance Issues

If you're experiencing slow performance, file access issues, or terminal problems on Windows, try using WSL (Windows Subsystem for Linux). WSL provides a Linux environment that works more seamlessly with OpenCode's features.

To use OpenCode with WSL:

wsl
# Inside WSL, install and run opencode normally

Notifications Not Showing

OpenCode Desktop only shows system notifications when both conditions are met:

1. Notifications are enabled for OpenCode in your OS settings
2. The app window is not focused — notifications are suppressed when the app is in the foreground to avoid distraction

To enable notifications:

• macOS: System Settings → Notifications → OpenCode → toggle on
• Windows: Settings → System → Notifications → find OpenCode → toggle on
• Linux: Varies by desktop environment (GNOME Settings → Notifications, KDE System Settings → Notifications)

Reset Desktop App Storage (Last Resort)

If the app won't start and you can't clear settings from inside the UI, reset the desktop app's saved state:

1. Quit OpenCode Desktop completely.
2. Find and delete these files in the OpenCode Desktop app data directory:

| File | Contents | |------|----------| | opencode.settings.dat | Desktop default server URL | | opencode.global.dat | UI state — recent servers, projects | | opencode.workspace.*.dat | Per-workspace UI state |

To find the directory:

| Platform | Path | |----------|------| | macOS | Finder → Cmd+Shift+G → ~/Library/Application Support → search for filenames | | Linux | Search under ~/.local/share for the filenames | | Windows | Press WIN+R → %APPDATA% → search for filenames |

1. Delete the matching files.
2. Restart OpenCode Desktop.

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Common Issues

OpenCode Won't Start

Symptoms: App shows a blank screen, immediately exits, or hangs on splash screen.

Diagnostic steps:

1. Check the logs for error messages:

ls -lt ~/.local/share/opencode/log/ | head -5
cat "$(ls -t ~/.local/share/opencode/log/*.log | head -1)"

1. Try running with --print-logs to see output in the terminal:

opencode --print-logs

1. Ensure you have the latest version:

opencode upgrade

1. Common causes and fixes:

• Corrupted cache → clear ~/.cache/opencode
• Misbehaving plugin → disable plugins (see [Disable Plugins](#disable-plugins))
• Port conflict → check if another process is using the configured port
• Missing WebView2 (Windows) → install WebView2 runtime
• Wayland issues (Linux) → try OC_ALLOW_WAYLAND=1 or switch to X11

Authentication Issues

Symptoms: "Authentication failed", 401/403 errors, models not loading due to missing credentials.

Diagnostic steps:

1. Try re-authenticating with the /connect command in the TUI:

# Launch the TUI
opencode
# Then type: /connect

1. Check that your API keys are valid — log in to your provider's dashboard (OpenAI, Anthropic, etc.) and verify:

• The API key hasn't been revoked
• Your account is in good standing
• Usage limits haven't been exceeded

1. Ensure your network allows connections to the provider's API:

• Check firewall/proxy settings
• Try curl https://api.openai.com/v1/models (or equivalent for your provider)
• Verify DNS resolution works

1. Verify stored credentials:

opencode providers list

Model Not Available

Symptoms: ProviderModelNotFoundError, model doesn't appear in model selection.

Diagnostic steps:

1. Check that you've authenticated with the provider — see [Authentication Issues](#authentication-issues).

1. Verify the model name in your config is correct. Models must be referenced as /:

| Correct | Incorrect | |---------|-----------| | openai/gpt-4.1 | gpt-4.1 | | anthropic/claude-sonnet-4-5 | claude-sonnet-4-5 | | openrouter/google/gemini-2.5-flash | gemini-2.5-flash | | opencode/kimi-k2 | kimi-k2 |

1. Some models may require specific access or subscriptions — check your provider's dashboard for model availability.

1. List all models you have access to:

opencode models

ProviderInitError

Symptoms: ProviderInitError on startup or when switching models.

This usually indicates an invalid or corrupted configuration.

Resolution steps:

1. Verify your provider is set up correctly — follow the providers guide.

1. Clear your stored configuration:

rm -rf ~/.local/share/opencode

On Windows:

Remove-Item -Recurse -Force "$env:USERPROFILE\.local\share\opencode"

1. Re-authenticate with your provider using the /connect command in the TUI.

1. If using environment variables, verify they're set correctly:

echo $ANTHROPIC_API_KEY  # or OPENAI_API_KEY, etc.

AI_APICallError and Provider Package Issues

Symptoms: API call errors, provider fails to respond, unexpected API response formats.

OpenCode dynamically installs provider packages (OpenAI, Anthropic, Google, etc.) as needed and caches them locally. Outdated or corrupted packages can cause API errors.

Resolution steps:

1. Clear the provider package cache:

rm -rf ~/.cache/opencode

On Windows:

Remove-Item -Recurse -Force "$env:USERPROFILE\.cache\opencode"

1. Restart OpenCode to reinstall the latest provider packages.

1. This forces OpenCode to download the most recent versions of provider packages, which often resolves compatibility issues with model parameters and API changes.

Copy/Paste Not Working on Linux

Symptoms: Cannot copy text from OpenCode TUI or paste into it.

Linux users need a clipboard utility installed for copy/paste functionality. OpenCode auto-detects your display server and uses the appropriate tool.

For X11 systems:

apt install -y xclip
# or
apt install -y xsel

For Wayland systems:

apt install -y

…

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [Timmy6942025](https://github.com/Timmy6942025)
- **Source:** [Timmy6942025/opencode-builder-skill](https://github.com/Timmy6942025/opencode-builder-skill)
- **License:** MIT

Install and usage instructions live in the source repository linked above.