oh-my-openagent

🔗 View on GitHub: oh-my-openagent
omo; the best agent harness

🚀 Quick Installation

Install and configure oh-my-opencode as an OpenCode plugin. The easiest way is to let an agent do it.

Agent Installation Prompt

Copy and paste this to your LLM agent (Claude Code, AmpCode, Cursor, etc.):

Install and configure oh-my-opencode by following the instructions here:
https://raw.githubusercontent.com/code-yeongyu/oh-my-openagent/refs/heads/dev/docs/guide/installation.md

Manual Installation

Fetch the installation guide:

curl -s https://raw.githubusercontent.com/code-yeongyu/oh-my-openagent/refs/heads/dev/docs/guide/installation.md

Then add to your OpenCode config (~/.config/opencode/opencode.json):

{
  "plugin": ["oh-my-opencode"]
}

What is Oh My OpenCode?

You're juggling Claude Code, Codex, random OSS models. Configuring workflows. Debugging agents.

We did the work. Tested everything. Kept what actually shipped.

Install OmO. Type ultrawork. Done.

Anthropic blocked OpenCode because of us. Yes this is true.

They want you locked in. Claude Code's a nice prison, but it's still a prison.

We don't do lock-in here. We ride every model. Claude / Kimi / GLM for orchestration. GPT for reasoning. Minimax for speed. Gemini for creativity.

The future isn't picking one winner—it's orchestrating them all.

✨ Key Features

🎭 Discipline Agents

Sisyphus (claude-opus-4-6 / kimi-k2.5 / glm-5) is your main orchestrator. He plans, delegates to specialists, and drives tasks to completion with aggressive parallel execution. He does not stop halfway.

Hephaestus (gpt-5.3-codex) is your autonomous deep worker. Give him a goal, not a recipe. He explores the codebase, researches patterns, and executes end-to-end without hand-holding. The Legitimate Craftsman.

Prometheus (claude-opus-4-6 / kimi-k2.5 / glm-5) is your strategic planner. Interview mode: it questions, identifies scope, and builds a detailed plan before a single line of code is touched.

Every agent is tuned to its model's specific strengths. No manual model-juggling.

🎯 Agent Orchestration

When Sisyphus delegates to a subagent, it doesn't pick a model. It picks a category. The category maps automatically to the right model:

Agent says what kind of work. Harness picks the right model. ultrabrain now routes to GPT-5.4 xhigh by default. You touch nothing.

🔧 World-Class Tools

LSP, AST-Grep, Tmux, MCP actually integrated, not duct-taped together.

• LSP: lsp_rename, lsp_goto_definition, lsp_find_references, lsp_diagnostics. IDE precision for every agent
• AST-Grep: Pattern-aware code search and rewriting across 25 languages
• Tmux: Full interactive terminal. REPLs, debuggers, TUI apps. Your agent stays in session
• MCP: Web search, official docs, GitHub code search. All baked in

🔗 Hash-Anchored Edits

The harness problem is real. Most agent failures aren't the model. It's the edit tool.

"None of these tools give the model a stable, verifiable identifier for the lines it wants to change... They all rely on the model reproducing content it already saw. When it can't - and it often can't - the user blames the model."

— Can Bölük, The Harness Problem

Inspired by oh-my-pi, we implemented Hashline. Every line the agent reads comes back tagged with a content hash:

11#VK| function hello() {
22#XJ|   return "world";
33#MB| }

The agent edits by referencing those tags. If the file changed since the last read, the hash won't match and the edit is rejected before corruption. No whitespace reproduction. No stale-line errors.

Grok Code Fast 1: 6.7% → 68.3% success rate. Just from changing the edit tool.

🗂️ Deep Initialization (/init-deep)

Run /init-deep. It generates hierarchical AGENTS.md files:

project/
├── AGENTS.md              ← project-wide context
├── src/
│   ├── AGENTS.md          ← src-specific context
│   └── components/
│       └── AGENTS.md      ← component-specific context

Agents auto-read relevant context. Zero manual management.

📝 User Testimonials

"It made me cancel my Cursor subscription. Unbelievable things are happening in the open source community."
— Arthur Guiot

"If Claude Code does in 7 days what a human does in 3 months, Sisyphus does it in 1 hour. It just works until the task is done. It is a discipline agent."
— B, Quant Researcher

"Knocked out 8000 eslint warnings with Oh My Opencode, just in a day"
— Jacob Ferrari

"I converted a 45k line tauri app into a SaaS web app overnight using Ohmyopencode and ralph loop."
— James Hargis

"You guys should pull this into core and recruit him. Seriously. It's really, really, really good."
— Henning Kilset

🔌 Claude Code Compatibility

You dialed in your Claude Code setup. Good.

Every hook, command, skill, MCP, plugin works here unchanged. Full compatibility, including plugins.

📦 Built-in Skills

Skills aren't just prompts. Each brings:

• Domain-tuned system instructions
• Embedded MCP servers, on-demand
• Scoped permissions. Agents stay in bounds

Built-ins:

• playwright — Browser automation
• git-master — Atomic commits, rebase surgery
• frontend-ui-ux — Design-first UI

Add your own: .opencode/skills/*/SKILL.md or ~/.config/opencode/skills/*/SKILL.md

⚙️ Configuration

Opinionated defaults, adjustable if you insist.

• Config Locations: .opencode/oh-my-opencode.jsonc (project) or ~/.config/opencode/oh-my-opencode.jsonc (user)
• JSONC Support: Comments and trailing commas supported
• Agents: Override models, temperatures, prompts, and permissions for any agent
• Hooks: 25+ built-in hooks, all configurable via disabled_hooks
• Experimental: Aggressive truncation, auto-resume, and more

❤️ Loved By

• Indent — Making Spray (influencer marketing), vovushop (crossborder commerce), vreview (AI commerce review marketing)
• Google
• Microsoft
• ELESTYLE — Making elepay (multi-mobile payment gateway), OneQR (mobile application SaaS)

📚 Documentation

• Overview — Understand what you have
• Orchestration Guide — How agents collaborate
• Features Documentation — Complete feature reference
• Configuration Documentation — Full config reference
• Ultrawork Manifesto — The philosophy

🔗 Links

• 🌐 GitHub Repository
• 💬 Discord Community
• 🐦 @justsisyphus on X
• 🏢 Sisyphus Labs — Productized version coming soon