# Oh-My-OpenCode Configuration

Highly opinionated, but adjustable to taste.

## Quick Start

**Most users don't need to configure anything manually.** Run the interactive installer:

```bash
bunx oh-my-opencode install
```

It asks about your providers (Claude, OpenAI, Gemini, etc.) and generates optimal config automatically.

**Want to customize?** Here's the common patterns:

```jsonc
{
  "$schema": "https://raw.githubusercontent.com/code-yeongyu/oh-my-opencode/master/assets/oh-my-opencode.schema.json",
  
  // Override specific agent models
  "agents": {
    "oracle": { "model": "openai/gpt-5.2" },           // Use GPT for debugging
    "librarian": { "model": "zai-coding-plan/glm-4.7" }, // Cheap model for research
    "explore": { "model": "opencode/gpt-5-nano" }        // Free model for grep
  },
  
  // Override category models (used by delegate_task)
  "categories": {
    "quick": { "model": "opencode/gpt-5-nano" },         // Fast/cheap for trivial tasks
    "visual-engineering": { "model": "google/gemini-3-pro" } // Gemini for UI
  }
}
```

**Find available models:** Run `opencode models` to see all models in your environment.

## Config File Locations

Config file locations (priority order):
1. `.opencode/oh-my-opencode.json` (project)
2. User config (platform-specific):

| Platform        | User Config Path                                                                                            |
| --------------- | ----------------------------------------------------------------------------------------------------------- |
| **Windows**     | `~/.config/opencode/oh-my-opencode.json` (preferred) or `%APPDATA%\opencode\oh-my-opencode.json` (fallback) |
| **macOS/Linux** | `~/.config/opencode/oh-my-opencode.json`                                                                    |

Schema autocomplete supported:

```json
{
  "$schema": "https://raw.githubusercontent.com/code-yeongyu/oh-my-opencode/master/assets/oh-my-opencode.schema.json"
}
```

## JSONC Support

The `oh-my-opencode` configuration file supports JSONC (JSON with Comments):
- Line comments: `// comment`
- Block comments: `/* comment */`
- Trailing commas: `{ "key": "value", }`

When both `oh-my-opencode.jsonc` and `oh-my-opencode.json` files exist, `.jsonc` takes priority.

**Example with comments:**

```jsonc
{
  "$schema": "https://raw.githubusercontent.com/code-yeongyu/oh-my-opencode/master/assets/oh-my-opencode.schema.json",

  /* Agent overrides - customize models for specific tasks */
  "agents": {
    "oracle": {
      "model": "openai/gpt-5.2"  // GPT for strategic reasoning
    },
    "explore": {
      "model": "opencode/gpt-5-nano"  // Free & fast for exploration
    },
  },
}
```

## Google Auth

**Recommended**: For Google Gemini authentication, install the [`opencode-antigravity-auth`](https://github.com/NoeFabris/opencode-antigravity-auth) plugin. It provides multi-account load balancing, more models (including Claude via Antigravity), and active maintenance. See [Installation > Google Gemini](../README.md#google-gemini-antigravity-oauth).

## Agents

Override built-in agent settings:

```json
{
  "agents": {
    "explore": {
      "model": "anthropic/claude-haiku-4-5",
      "temperature": 0.5
    },
    "multimodal-looker": {
      "disable": true
    }
  }
}
```

Each agent supports: `model`, `temperature`, `top_p`, `prompt`, `prompt_append`, `tools`, `disable`, `description`, `mode`, `color`, `permission`.

Use `prompt_append` to add extra instructions without replacing the default system prompt:

```json
{
  "agents": {
    "librarian": {
      "prompt_append": "Always use the elisp-dev-mcp for Emacs Lisp documentation lookups."
    }
  }
}
```

You can also override settings for `Sisyphus` (the main orchestrator) and `build` (the default agent) using the same options.

### Permission Options

Fine-grained control over what agents can do:

```json
{
  "agents": {
    "explore": {
      "permission": {
        "edit": "deny",
        "bash": "ask",
        "webfetch": "allow"
      }
    }
  }
}
```

| Permission           | Description                            | Values                                                                      |
| -------------------- | -------------------------------------- | --------------------------------------------------------------------------- |
| `edit`               | File editing permission                | `ask` / `allow` / `deny`                                                    |
| `bash`               | Bash command execution                 | `ask` / `allow` / `deny` or per-command: `{ "git": "allow", "rm": "deny" }` |
| `webfetch`           | Web request permission                 | `ask` / `allow` / `deny`                                                    |
| `doom_loop`          | Allow infinite loop detection override | `ask` / `allow` / `deny`                                                    |
| `external_directory` | Access files outside project root      | `ask` / `allow` / `deny`                                                    |

Or disable via `disabled_agents` in `~/.config/opencode/oh-my-opencode.json` or `.opencode/oh-my-opencode.json`:

```json
{
  "disabled_agents": ["oracle", "multimodal-looker"]
}
```

Available agents: `oracle`, `librarian`, `explore`, `multimodal-looker`

## Built-in Skills

Oh My OpenCode includes built-in skills that provide additional capabilities:

- **playwright**: Browser automation with Playwright MCP. Use for web scraping, testing, screenshots, and browser interactions.
- **git-master**: Git expert for atomic commits, rebase/squash, and history search (blame, bisect, log -S). STRONGLY RECOMMENDED: Use with `delegate_task(category='quick', skills=['git-master'], ...)` to save context.

Disable built-in skills via `disabled_skills` in `~/.config/opencode/oh-my-opencode.json` or `.opencode/oh-my-opencode.json`:

```json
{
  "disabled_skills": ["playwright"]
}
```

Available built-in skills: `playwright`, `git-master`

## Git Master

Configure git-master skill behavior:

```json
{
  "git_master": {
    "commit_footer": true,
    "include_co_authored_by": true
  }
}
```

| Option                   | Default | Description                                                                      |
| ------------------------ | ------- | -------------------------------------------------------------------------------- |
| `commit_footer`          | `true`  | Adds "Ultraworked with Sisyphus" footer to commit messages.                      |
| `include_co_authored_by` | `true`  | Adds `Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>` trailer to commits. |

## Sisyphus Agent

When enabled (default), Sisyphus provides a powerful orchestrator with optional specialized agents:

- **Sisyphus**: Primary orchestrator agent (Claude Opus 4.5)
- **OpenCode-Builder**: OpenCode's default build agent, renamed due to SDK limitations (disabled by default)
- **Prometheus (Planner)**: OpenCode's default plan agent with work-planner methodology (enabled by default)
- **Metis (Plan Consultant)**: Pre-planning analysis agent that identifies hidden requirements and AI failure points

**Configuration Options:**

```json
{
  "sisyphus_agent": {
    "disabled": false,
    "default_builder_enabled": false,
    "planner_enabled": true,
    "replace_plan": true
  }
}
```

**Example: Enable OpenCode-Builder:**

```json
{
  "sisyphus_agent": {
    "default_builder_enabled": true
  }
}
```

This enables OpenCode-Builder agent alongside Sisyphus. The default build agent is always demoted to subagent mode when Sisyphus is enabled.

**Example: Disable all Sisyphus orchestration:**

```json
{
  "sisyphus_agent": {
    "disabled": true
  }
}
```

You can also customize Sisyphus agents like other agents:

```json
{
  "agents": {
    "Sisyphus": {
      "model": "anthropic/claude-sonnet-4",
      "temperature": 0.3
    },
    "OpenCode-Builder": {
      "model": "anthropic/claude-opus-4"
    },
    "Prometheus (Planner)": {
      "model": "openai/gpt-5.2"
    },
    "Metis (Plan Consultant)": {
      "model": "anthropic/claude-sonnet-4-5"
    }
  }
}
```

| Option                    | Default | Description                                                                                                                            |
| ------------------------- | ------- | -------------------------------------------------------------------------------------------------------------------------------------- |
| `disabled`                | `false` | When `true`, disables all Sisyphus orchestration and restores original build/plan as primary.                                          |
| `default_builder_enabled` | `false` | When `true`, enables OpenCode-Builder agent (same as OpenCode build, renamed due to SDK limitations). Disabled by default.             |
| `planner_enabled`         | `true`  | When `true`, enables Prometheus (Planner) agent with work-planner methodology. Enabled by default.                                     |
| `replace_plan`            | `true`  | When `true`, demotes default plan agent to subagent mode. Set to `false` to keep both Prometheus (Planner) and default plan available. |

## Background Tasks

Configure concurrency limits for background agent tasks. This controls how many parallel background agents can run simultaneously.

```json
{
  "background_task": {
    "defaultConcurrency": 5,
    "providerConcurrency": {
      "anthropic": 3,
      "openai": 5,
      "google": 10
    },
    "modelConcurrency": {
      "anthropic/claude-opus-4-5": 2,
      "google/gemini-3-flash": 10
    }
  }
}
```

| Option                | Default | Description                                                                                                             |
| --------------------- | ------- | ----------------------------------------------------------------------------------------------------------------------- |
| `defaultConcurrency`  | -       | Default maximum concurrent background tasks for all providers/models                                                    |
| `providerConcurrency` | -       | Per-provider concurrency limits. Keys are provider names (e.g., `anthropic`, `openai`, `google`)                        |
| `modelConcurrency`    | -       | Per-model concurrency limits. Keys are full model names (e.g., `anthropic/claude-opus-4-5`). Overrides provider limits. |

**Priority Order**: `modelConcurrency` > `providerConcurrency` > `defaultConcurrency`

**Use Cases**:
- Limit expensive models (e.g., Opus) to prevent cost spikes
- Allow more concurrent tasks for fast/cheap models (e.g., Gemini Flash)
- Respect provider rate limits by setting provider-level caps

## Categories

Categories enable domain-specific task delegation via the `delegate_task` tool. Each category applies runtime presets (model, temperature, prompt additions) when calling the `Sisyphus-Junior` agent.

**Default Categories:**

| Category         | Model                         | Description                                                                  |
| ---------------- | ----------------------------- | ---------------------------------------------------------------------------- |
| `visual`         | `google/gemini-3-pro` | Frontend, UI/UX, design-focused tasks. High creativity (temp 0.7).           |
| `business-logic` | `openai/gpt-5.2`              | Backend logic, architecture, strategic reasoning. Low creativity (temp 0.1). |

**Usage:**

```
// Via delegate_task tool
delegate_task(category="visual", prompt="Create a responsive dashboard component")
delegate_task(category="business-logic", prompt="Design the payment processing flow")

// Or target a specific agent directly
delegate_task(agent="oracle", prompt="Review this architecture")
```

**Custom Categories:**

Add custom categories in `oh-my-opencode.json`:

```json
{
  "categories": {
    "data-science": {
      "model": "anthropic/claude-sonnet-4-5",
      "temperature": 0.2,
      "prompt_append": "Focus on data analysis, ML pipelines, and statistical methods."
    },
    "visual": {
      "model": "google/gemini-3-pro",
      "prompt_append": "Use shadcn/ui components and Tailwind CSS."
    }
  }
}
```

Each category supports: `model`, `temperature`, `top_p`, `maxTokens`, `thinking`, `reasoningEffort`, `textVerbosity`, `tools`, `prompt_append`.

## Model Resolution System

At runtime, Oh My OpenCode uses a 3-step resolution process to determine which model to use for each agent and category. This happens dynamically based on your configuration and available models.

### Overview

**Problem**: Users have different provider configurations. The system needs to select the best available model for each task at runtime.

**Solution**: A simple 3-step resolution flow:
1. **Step 1: User Override** — If you specify a model in `oh-my-opencode.json`, use exactly that
2. **Step 2: Provider Fallback** — Try each provider in the requirement's priority order until one is available
3. **Step 3: System Default** — Fall back to OpenCode's configured default model

### Resolution Flow

```
┌─────────────────────────────────────────────────────────────────┐
│                     MODEL RESOLUTION FLOW                        │
├─────────────────────────────────────────────────────────────────┤
│                                                                 │
│   Step 1: USER OVERRIDE                                         │
│   ┌─────────────────────────────────────────────────────────┐   │
│   │ User specified model in oh-my-opencode.json?            │   │
│   │         YES → Use exactly as specified                  │   │
│   │         NO  → Continue to Step 2                        │   │
│   └─────────────────────────────────────────────────────────┘   │
│                              │                                  │
│                              ▼                                  │
│   Step 2: PROVIDER PRIORITY FALLBACK                            │
│   ┌─────────────────────────────────────────────────────────┐   │
│   │ For each provider in requirement.providers order:       │   │
│   │                                                         │   │
│   │ Example for Sisyphus:                                   │   │
│   │ anthropic → github-copilot → opencode → antigravity     │   │
│   │     │            │              │            │          │   │
│   │     ▼            ▼              ▼            ▼          │   │
│   │ Try: anthropic/claude-opus-4-5                          │   │
│   │ Try: github-copilot/claude-opus-4-5                     │   │
│   │ Try: opencode/claude-opus-4-5                           │   │
│   │ ...                                                     │   │
│   │                                                         │   │
│   │ Found in available models? → Return matched model       │   │
│   │ Not found? → Try next provider                          │   │
│   └─────────────────────────────────────────────────────────┘   │
│                              │                                  │
│                              ▼ (all providers exhausted)        │
│   Step 3: SYSTEM DEFAULT                                        │
│   ┌─────────────────────────────────────────────────────────┐   │
│   │ Return systemDefaultModel (from opencode.json)          │   │
│   └─────────────────────────────────────────────────────────┘   │
│                                                                 │
└─────────────────────────────────────────────────────────────────┘
```

### Agent Provider Chains

Each agent has a defined provider priority chain. The system tries providers in order until it finds an available model:

| Agent | Model (no prefix) | Provider Priority Chain |
|-------|-------------------|-------------------------|
| **Sisyphus** | `claude-opus-4-5` | anthropic → github-copilot → opencode → antigravity → google |
| **oracle** | `gpt-5.2` | openai → anthropic → google → github-copilot → opencode |
| **librarian** | `big-pickle` | opencode → github-copilot → anthropic |
| **explore** | `gpt-5-nano` | opencode → anthropic → github-copilot |
| **multimodal-looker** | `gemini-3-flash` | google → openai → zai-coding-plan → anthropic → opencode |
| **Prometheus (Planner)** | `claude-opus-4-5` | anthropic → github-copilot → opencode → antigravity → google |
| **Metis (Plan Consultant)** | `claude-sonnet-4-5` | anthropic → github-copilot → opencode → antigravity → google |
| **Momus (Plan Reviewer)** | `claude-opus-4-5` | anthropic → github-copilot → opencode → antigravity → google |
| **Atlas** | `claude-sonnet-4-5` | anthropic → github-copilot → opencode → antigravity → google |

### Category Provider Chains

Categories follow the same resolution logic:

| Category | Model (no prefix) | Provider Priority Chain |
|----------|-------------------|-------------------------|
| **visual-engineering** | `gemini-3-pro` | google → openai → anthropic → github-copilot → opencode |
| **ultrabrain** | `gpt-5.2-codex` | openai → anthropic → google → github-copilot → opencode |
| **artistry** | `gemini-3-pro` | google → openai → anthropic → github-copilot → opencode |
| **quick** | `claude-haiku-4-5` | anthropic → github-copilot → opencode → antigravity → google |
| **unspecified-low** | `claude-sonnet-4-5` | anthropic → github-copilot → opencode → antigravity → google |
| **unspecified-high** | `claude-opus-4-5` | anthropic → github-copilot → opencode → antigravity → google |
| **writing** | `gemini-3-flash` | google → openai → anthropic → github-copilot → opencode |

### Checking Your Configuration

Use the `doctor` command to see how models resolve with your current configuration:

```bash
bunx oh-my-opencode doctor --verbose
```

The "Model Resolution" check shows:
- Each agent/category's model requirement
- Provider fallback chain
- User overrides (if configured)
- Effective resolution path

### Manual Override

Override any agent or category model in `oh-my-opencode.json`:

```json
{
  "agents": {
    "Sisyphus": {
      "model": "anthropic/claude-sonnet-4-5"
    },
    "oracle": {
      "model": "openai/o3"
    }
  },
  "categories": {
    "visual-engineering": {
      "model": "anthropic/claude-opus-4-5"
    }
  }
}
```

When you specify a model override, it takes precedence (Step 1) and the provider fallback chain is skipped entirely.

## Hooks

Disable specific built-in hooks via `disabled_hooks` in `~/.config/opencode/oh-my-opencode.json` or `.opencode/oh-my-opencode.json`:

```json
{
  "disabled_hooks": ["comment-checker", "agent-usage-reminder"]
}
```

Available hooks: `todo-continuation-enforcer`, `context-window-monitor`, `session-recovery`, `session-notification`, `comment-checker`, `grep-output-truncator`, `tool-output-truncator`, `directory-agents-injector`, `directory-readme-injector`, `empty-task-response-detector`, `think-mode`, `anthropic-context-window-limit-recovery`, `rules-injector`, `background-notification`, `auto-update-checker`, `startup-toast`, `keyword-detector`, `agent-usage-reminder`, `non-interactive-env`, `interactive-bash-session`, `compaction-context-injector`, `thinking-block-validator`, `claude-code-hooks`, `ralph-loop`, `preemptive-compaction`

**Note on `auto-update-checker` and `startup-toast`**: The `startup-toast` hook is a sub-feature of `auto-update-checker`. To disable only the startup toast notification while keeping update checking enabled, add `"startup-toast"` to `disabled_hooks`. To disable all update checking features (including the toast), add `"auto-update-checker"` to `disabled_hooks`.

## MCPs

Exa, Context7 and grep.app MCP enabled by default.

- **websearch**: Real-time web search powered by [Exa AI](https://exa.ai) - searches the web and returns relevant content
- **context7**: Fetches up-to-date official documentation for libraries
- **grep_app**: Ultra-fast code search across millions of public GitHub repositories via [grep.app](https://grep.app)

Don't want them? Disable via `disabled_mcps` in `~/.config/opencode/oh-my-opencode.json` or `.opencode/oh-my-opencode.json`:

```json
{
  "disabled_mcps": ["websearch", "context7", "grep_app"]
}
```

## LSP

OpenCode provides LSP tools for analysis.
Oh My OpenCode adds refactoring tools (rename, code actions).
All OpenCode LSP configs and custom settings (from opencode.json) are supported, plus additional Oh My OpenCode-specific settings.

Add LSP servers via the `lsp` option in `~/.config/opencode/oh-my-opencode.json` or `.opencode/oh-my-opencode.json`:

```json
{
  "lsp": {
    "typescript-language-server": {
      "command": ["typescript-language-server", "--stdio"],
      "extensions": [".ts", ".tsx"],
      "priority": 10
    },
    "pylsp": {
      "disabled": true
    }
  }
}
```

Each server supports: `command`, `extensions`, `priority`, `env`, `initialization`, `disabled`.

## Experimental

Opt-in experimental features that may change or be removed in future versions. Use with caution.

```json
{
  "experimental": {
    "truncate_all_tool_outputs": true,
    "aggressive_truncation": true,
    "auto_resume": true
  }
}
```

| Option                      | Default | Description                                                                                                                                                                                   |
| --------------------------- | ------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `truncate_all_tool_outputs` | `false` | Truncates ALL tool outputs instead of just whitelisted tools (Grep, Glob, LSP, AST-grep). Tool output truncator is enabled by default - disable via `disabled_hooks`.                         |
| `aggressive_truncation`     | `false` | When token limit is exceeded, aggressively truncates tool outputs to fit within limits. More aggressive than the default truncation behavior. Falls back to summarize/revert if insufficient. |
| `auto_resume`               | `false` | Automatically resumes session after successful recovery from thinking block errors or thinking disabled violations. Extracts the last user message and continues.                             |

**Warning**: These features are experimental and may cause unexpected behavior. Enable only if you understand the implications.

## Environment Variables

| Variable              | Description                                                                                                                                     |
| --------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------- |
| `OPENCODE_CONFIG_DIR` | Override the OpenCode configuration directory. Useful for profile isolation with tools like [OCX](https://github.com/kdcokenny/ocx) ghost mode. |
