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Dax Raad
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packages/web/src/content/docs/modes.mdx
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packages/web/src/content/docs/modes.mdx
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---
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title: Modes
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description: Different modes for different use cases.
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---
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:::caution
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Modes are now configured through the `agent` option in the opencode config. The
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`mode` option is now deprecated. [Learn more](/docs/agents).
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:::
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Modes in opencode allow you to customize the behavior, tools, and prompts for different use cases.
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It comes with two built-in modes: **build** and **plan**. You can customize
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these or configure your own through the opencode config.
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You can switch between modes during a session or configure them in your config file.
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---
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## Built-in
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opencode comes with two built-in modes.
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---
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### Build
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Build is the **default** mode with all tools enabled. This is the standard mode for development work where you need full access to file operations and system commands.
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---
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### Plan
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A restricted mode designed for planning and analysis. In plan mode, the following tools are disabled by default:
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- `write` - Cannot create new files
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- `edit` - Cannot modify existing files
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- `patch` - Cannot apply patches
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- `bash` - Cannot execute shell commands
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This mode is useful when you want the AI to analyze code, suggest changes, or create plans without making any actual modifications to your codebase.
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---
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## Switching
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You can switch between modes during a session using the _Tab_ key. Or your configured `switch_mode` keybind.
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See also: [Formatters](/docs/formatters) for information about code formatting configuration.
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---
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## Configure
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You can customize the built-in modes or create your own through configuration. Modes can be configured in two ways:
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### JSON Configuration
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Configure modes in your `opencode.json` config file:
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```json title="opencode.json"
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{
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"$schema": "https://opencode.ai/config.json",
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"mode": {
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"build": {
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"model": "anthropic/claude-sonnet-4-20250514",
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"prompt": "{file:./prompts/build.txt}",
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"tools": {
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"write": true,
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"edit": true,
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"bash": true
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}
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},
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"plan": {
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"model": "anthropic/claude-haiku-4-20250514",
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"tools": {
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"write": false,
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"edit": false,
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"bash": false
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}
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}
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}
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}
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```
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### Markdown Configuration
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You can also define modes using markdown files. Place them in:
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- Global: `~/.config/opencode/mode/`
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- Project: `.opencode/mode/`
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```markdown title="~/.config/opencode/mode/review.md"
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---
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model: anthropic/claude-sonnet-4-20250514
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temperature: 0.1
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tools:
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write: false
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edit: false
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bash: false
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---
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You are in code review mode. Focus on:
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- Code quality and best practices
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- Potential bugs and edge cases
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- Performance implications
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- Security considerations
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Provide constructive feedback without making direct changes.
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```
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The markdown file name becomes the mode name (e.g., `review.md` creates a `review` mode).
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Let's look at these configuration options in detail.
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---
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### Model
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Use the `model` config to override the default model for this mode. Useful for using different models optimized for different tasks. For example, a faster model for planning, a more capable model for implementation.
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```json title="opencode.json"
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{
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"mode": {
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"plan": {
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"model": "anthropic/claude-haiku-4-20250514"
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}
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}
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}
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```
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---
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### Temperature
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Control the randomness and creativity of the AI's responses with the `temperature` config. Lower values make responses more focused and deterministic, while higher values increase creativity and variability.
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```json title="opencode.json"
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{
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"mode": {
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"plan": {
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"temperature": 0.1
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},
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"creative": {
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"temperature": 0.8
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}
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}
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}
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```
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Temperature values typically range from 0.0 to 1.0:
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- **0.0-0.2**: Very focused and deterministic responses, ideal for code analysis and planning
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- **0.3-0.5**: Balanced responses with some creativity, good for general development tasks
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- **0.6-1.0**: More creative and varied responses, useful for brainstorming and exploration
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```json title="opencode.json"
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{
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"mode": {
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"analyze": {
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"temperature": 0.1,
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"prompt": "{file:./prompts/analysis.txt}"
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},
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"build": {
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"temperature": 0.3
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},
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"brainstorm": {
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"temperature": 0.7,
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"prompt": "{file:./prompts/creative.txt}"
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}
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}
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}
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```
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If no temperature is specified, opencode uses model-specific defaults (typically 0 for most models, 0.55 for Qwen models).
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---
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### Prompt
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Specify a custom system prompt file for this mode with the `prompt` config. The prompt file should contain instructions specific to the mode's purpose.
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```json title="opencode.json"
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{
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"mode": {
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"review": {
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"prompt": "{file:./prompts/code-review.txt}"
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}
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}
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}
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```
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This path is relative to where the config file is located. So this works for
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both the global opencode config and the project specific config.
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---
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### Tools
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Control which tools are available in this mode with the `tools` config. You can enable or disable specific tools by setting them to `true` or `false`.
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```json
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{
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"mode": {
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"readonly": {
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"tools": {
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"write": false,
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"edit": false,
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"bash": false,
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"read": true,
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"grep": true,
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"glob": true
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}
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}
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}
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}
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```
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If no tools are specified, all tools are enabled by default.
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---
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#### Available tools
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Here are all the tools can be controlled through the mode config.
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| Tool | Description |
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| ----------- | ----------------------- |
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| `bash` | Execute shell commands |
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| `edit` | Modify existing files |
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| `write` | Create new files |
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| `read` | Read file contents |
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| `grep` | Search file contents |
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| `glob` | Find files by pattern |
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| `list` | List directory contents |
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| `patch` | Apply patches to files |
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| `todowrite` | Manage todo lists |
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| `todoread` | Read todo lists |
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| `webfetch` | Fetch web content |
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---
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## Custom modes
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You can create your own custom modes by adding them to the configuration. Here are examples using both approaches:
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### Using JSON configuration
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```json title="opencode.json" {4-14}
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{
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"$schema": "https://opencode.ai/config.json",
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"mode": {
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"docs": {
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"prompt": "{file:./prompts/documentation.txt}",
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"tools": {
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"write": true,
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"edit": true,
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"bash": false,
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"read": true,
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"grep": true,
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"glob": true
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}
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}
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}
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}
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```
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### Using markdown files
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Create mode files in `.opencode/mode/` for project-specific modes or `~/.config/opencode/mode/` for global modes:
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```markdown title=".opencode/mode/debug.md"
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---
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temperature: 0.1
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tools:
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bash: true
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read: true
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grep: true
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write: false
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edit: false
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---
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You are in debug mode. Your primary goal is to help investigate and diagnose issues.
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Focus on:
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- Understanding the problem through careful analysis
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- Using bash commands to inspect system state
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- Reading relevant files and logs
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- Searching for patterns and anomalies
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- Providing clear explanations of findings
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Do not make any changes to files. Only investigate and report.
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```
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```markdown title="~/.config/opencode/mode/refactor.md"
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---
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model: anthropic/claude-sonnet-4-20250514
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temperature: 0.2
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tools:
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edit: true
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read: true
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grep: true
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glob: true
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---
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You are in refactoring mode. Focus on improving code quality without changing functionality.
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Priorities:
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- Improve code readability and maintainability
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- Apply consistent naming conventions
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- Reduce code duplication
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- Optimize performance where appropriate
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- Ensure all tests continue to pass
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```
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---
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### Use cases
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Here are some common use cases for different modes.
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- **Build mode**: Full development work with all tools enabled
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- **Plan mode**: Analysis and planning without making changes
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- **Review mode**: Code review with read-only access plus documentation tools
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- **Debug mode**: Focused on investigation with bash and read tools enabled
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- **Docs mode**: Documentation writing with file operations but no system commands
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You might also find different models are good for different use cases.
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