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333 lines
7.9 KiB
Plaintext
333 lines
7.9 KiB
Plaintext
---
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title: Config
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description: Using the opencode JSON config.
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---
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You can configure opencode using a JSON config file.
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## Format
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opencode supports both JSON and JSONC (JSON with Comments) formats. You can use comments in your configuration files:
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```jsonc title="opencode.jsonc"
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{
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"$schema": "https://opencode.ai/config.json",
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// Theme configuration
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"theme": "opencode",
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"model": "anthropic/claude-sonnet-4-20250514",
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"autoupdate": true,
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}
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```
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This can be used to configure opencode globally or for a specific project.
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---
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### Global
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Place your global opencode config in `~/.config/opencode/opencode.json`. You'll want to use the global config for things like themes, providers, or keybinds.
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---
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### Per project
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You can also add a `opencode.json` in your project. This is useful for configuring providers or modes specific to your project.
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When opencode starts up, it looks for a config file in the current directory or traverse up to the nearest Git directory.
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This is also safe to be checked into Git and uses the same schema as the global one.
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---
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### Custom config file
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You can specify a custom config file using the `OPENCODE_CONFIG` environment variable. This takes precedence over the global and project configs.
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```bash
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export OPENCODE_CONFIG=/path/to/my/custom-config.json
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opencode run "Hello world"
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```
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---
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## Schema
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The config file has a schema that's defined in [**`opencode.ai/config.json`**](https://opencode.ai/config.json).
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Your editor should be able to validate and autocomplete based on the schema.
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---
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### Modes
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opencode comes with two built-in modes: _build_, the default with all tools enabled. And _plan_, restricted mode with file modification tools disabled. You can override these built-in modes or define your own custom modes with the `mode` option.
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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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"plan": {},
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"my-custom-mode": {}
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}
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}
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```
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[Learn more here](/docs/modes).
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---
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### Models
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You can configure the providers and models you want to use in your opencode config through the `provider`, `model` and `small_model` options.
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```json title="opencode.json"
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{
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"$schema": "https://opencode.ai/config.json",
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"provider": {},
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"model": "anthropic/claude-sonnet-4-20250514",
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"small_model": "anthropic/claude-3-5-haiku-20241022"
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}
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```
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The `small_model` option configures a separate model for lightweight tasks like summarization and title generation. By default, opencode tries to use a cheaper model if one is available from your provider, otherwise it falls back to your main model.
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You can also configure [local models](/docs/models#local). [Learn more](/docs/models).
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---
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### Themes
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You can configure the theme you want to use in your opencode config through the `theme` option.
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```json title="opencode.json"
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{
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"$schema": "https://opencode.ai/config.json",
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"theme": ""
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}
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```
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[Learn more here](/docs/themes).
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---
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### Logging
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Logs are written to:
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- **macOS/Linux**: `~/.local/share/opencode/log/`
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- **Windows**: `%APPDATA%\opencode\log\`
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---
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### Sharing
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You can configure the [share](/docs/share) feature through the `share` option.
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```json title="opencode.json"
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{
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"$schema": "https://opencode.ai/config.json",
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"share": "manual"
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}
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```
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This takes:
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- `"manual"` - Allow manual sharing via commands (default)
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- `"auto"` - Automatically share new conversations
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- `"disabled"` - Disable sharing entirely
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By default, sharing is set to manual mode where you need to explicitly share conversations using the `/share` command.
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---
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### Keybinds
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You can customize your keybinds through the `keybinds` option.
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```json title="opencode.json"
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{
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"$schema": "https://opencode.ai/config.json",
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"keybinds": {}
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}
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```
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[Learn more here](/docs/keybinds).
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---
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### Autoupdate
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opencode will automatically download any new updates when it starts up. You can disable this with the `autoupdate` option.
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```json title="opencode.json"
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{
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"$schema": "https://opencode.ai/config.json",
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"autoupdate": false
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}
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```
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---
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### MCP servers
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You can configure MCP servers you want to use through the `mcp` option.
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```json title="opencode.json"
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{
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"$schema": "https://opencode.ai/config.json",
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"mcp": {}
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}
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```
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[Learn more here](/docs/mcp-servers).
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---
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### Instructions
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You can configure the instructions for the model you're using through the `instructions` option.
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```json title="opencode.json"
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{
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"$schema": "https://opencode.ai/config.json",
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"instructions": ["CONTRIBUTING.md", "docs/guidelines.md", ".cursor/rules/*.md"]
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}
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```
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This takes an array of paths and glob patterns to instruction files. [Learn more
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about rules here](/docs/rules).
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---
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### Agents
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You can configure specialized agents for specific tasks through the `agent` option.
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```jsonc title="opencode.jsonc"
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{
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"$schema": "https://opencode.ai/config.json",
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"agent": {
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"code-reviewer": {
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"description": "Reviews code for best practices and potential issues",
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"model": "anthropic/claude-sonnet-4-20250514",
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"prompt": "You are a code reviewer. Focus on security, performance, and maintainability.",
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"tools": {
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// Disable file modification tools for review-only agent
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"write": false,
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"edit": 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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You can also define agents using markdown files in `~/.config/opencode/agent/` or `.opencode/agent/`. [Learn more here](/docs/agents).
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---
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### Disabled providers
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You can disable providers that are loaded automatically through the `disabled_providers` option. This is useful when you want to prevent certain providers from being loaded even if their credentials are available.
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---
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### Formatters
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You can configure code formatters through the `formatter` option. See [Formatters documentation](/docs/formatters) for more details.
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```json title="opencode.json"
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{
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"$schema": "https://opencode.ai/config.json",
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"disabled_providers": ["openai", "gemini"]
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}
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```
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The `disabled_providers` option accepts an array of provider IDs. When a provider is disabled:
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- It won't be loaded even if environment variables are set
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- It won't be loaded even if API keys are configured through `opencode auth login`
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- The provider's models won't appear in the model selection list
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---
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### Permissions
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You can configure permissions to control what AI agents can do in your codebase through the `permission` option.
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```json title="opencode.json"
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{
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"$schema": "https://opencode.ai/config.json",
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"permission": {
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"edit": "ask",
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"bash": "ask"
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}
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}
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```
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The permissions system allows you to configure explicit approval requirements for sensitive operations:
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- `edit` - Controls whether file editing operations require user approval (`"ask"` or `"allow"`)
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- `bash` - Controls whether bash commands require user approval (can be `"ask"`/`"allow"` or a pattern map)
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[Learn more about permissions here](/docs/permissions).
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---
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## Variables
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You can use variable substitution in your config files to reference environment variables and file contents.
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---
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### Env vars
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Use `{env:VARIABLE_NAME}` to substitute environment variables:
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```json title="opencode.json"
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{
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"$schema": "https://opencode.ai/config.json",
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"model": "{env:OPENCODE_MODEL}",
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"provider": {
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"anthropic": {
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"options": {
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"apiKey": "{env:ANTHROPIC_API_KEY}"
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}
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}
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}
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}
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```
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If the environment variable is not set, it will be replaced with an empty string.
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---
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### Files
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Use `{file:path/to/file}` to substitute the contents of a file:
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```json title="opencode.json"
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{
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"$schema": "https://opencode.ai/config.json",
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"instructions": ["{file:./custom-instructions.md}"],
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"provider": {
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"openai": {
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"options": {
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"apiKey": "{file:~/.secrets/openai-key}"
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}
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}
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}
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}
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```
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File paths can be:
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- Relative to the config file directory
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- Or absolute paths starting with `/` or `~`
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These are useful for:
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- Keeping sensitive data like API keys in separate files.
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- Including large instruction files without cluttering your config.
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- Sharing common configuration snippets across multiple config files.
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