oh-my-openagent/docs/configurations.md

Oh-My-OpenCode Configuration

Highly opinionated, but adjustable to taste.

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:

{
  "$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:

{
  "$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/grok-code"  // Free & fast for exploration
    },
  },
}

Google Auth

Recommended: For Google Gemini authentication, install the opencode-antigravity-auth plugin. It provides multi-account load balancing, more models (including Claude via Antigravity), and active maintenance. See Installation > Google Gemini.

Agents

Override built-in agent settings:

{
  "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:

{
  "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:

{
  "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:

{
  "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:

{
  "disabled_skills": ["playwright"]
}

Available built-in skills: playwright, git-master

Git Master

Configure git-master skill behavior:

{
  "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:

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

Example: Enable OpenCode-Builder:

{
  "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:

{
  "sisyphus_agent": {
    "disabled": true
  }
}

You can also customize Sisyphus agents like other agents:

{
  "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.

{
  "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-preview	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:

{
  "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-preview",
      "prompt_append": "Use shadcn/ui components and Tailwind CSS."
    }
  }
}

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

Hooks

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

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

{
  "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.

{
  "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 ghost mode.