oh-my-opencode/src/agents/AGENTS.md

AGENTS KNOWLEDGE BASE

OVERVIEW

AI agent definitions for multi-model orchestration. 7 specialized agents: Sisyphus (orchestrator), oracle (read-only consultation), librarian (research), explore (grep), frontend-ui-ux-engineer, document-writer, multimodal-looker.

STRUCTURE

agents/
├── orchestrator-sisyphus.ts # Orchestrator agent (1484 lines) - complex delegation
├── sisyphus.ts              # Main Sisyphus prompt (641 lines)
├── sisyphus-junior.ts       # Junior variant for delegated tasks
├── oracle.ts                # Strategic advisor (GPT-5.2)
├── librarian.ts             # Multi-repo research (Claude Sonnet 4.5)
├── explore.ts               # Fast codebase grep (Grok Code)
├── frontend-ui-ux-engineer.ts  # UI generation (Gemini 3 Pro)
├── document-writer.ts       # Technical docs (Gemini 3 Pro)
├── multimodal-looker.ts     # PDF/image analysis (Gemini 3 Flash)
├── prometheus-prompt.ts     # Planning agent prompt (982 lines)
├── metis.ts                 # Plan Consultant agent (404 lines)
├── momus.ts                 # Plan Reviewer agent (404 lines)
├── build-prompt.ts          # Shared build agent prompt
├── plan-prompt.ts           # Shared plan agent prompt
├── types.ts                 # AgentModelConfig interface
├── utils.ts                 # createBuiltinAgents(), getAgentName()
└── index.ts                 # builtinAgents export

AGENT MODELS

Agent	Default Model	Fallback	Purpose
Sisyphus	anthropic/claude-opus-4-5	-	Primary orchestrator with extended thinking
oracle	openai/gpt-5.2	-	Read-only consultation. High-IQ debugging, architecture
librarian	opencode/glm-4.7-free	-	Docs, OSS research, GitHub examples
explore	opencode/grok-code	google/gemini-3-flash, anthropic/claude-haiku-4-5	Fast contextual grep
frontend-ui-ux-engineer	google/gemini-3-pro-preview	-	UI/UX code generation
document-writer	google/gemini-3-pro-preview	-	Technical writing
multimodal-looker	google/gemini-3-flash	-	PDF/image analysis

HOW TO ADD AN AGENT

1. Create src/agents/my-agent.ts:

   import type { AgentConfig } from "@opencode-ai/sdk"
   
   export const myAgent: AgentConfig = {
     model: "provider/model-name",
     temperature: 0.1,
     system: "Agent system prompt...",
     tools: { include: ["tool1", "tool2"] },  // or exclude: [...]
   }
   

2. Add to builtinAgents in src/agents/index.ts
3. Update types.ts if adding new config options

AGENT CONFIG OPTIONS

Option	Type	Description
model	string	Model identifier (provider/model-name)
temperature	number	0.0-1.0, most use 0.1 for consistency
system	string	System prompt (can be multiline template literal)
tools	object	{ include: [...] } or { exclude: [...] }
top_p	number	Optional nucleus sampling
maxTokens	number	Optional max output tokens

MODEL FALLBACK LOGIC

createBuiltinAgents() in utils.ts handles model fallback:

1. Check user config override (agents.{name}.model)
2. Check installer settings (claude max20, gemini antigravity)
3. Use default model

Fallback order for explore:

• If gemini antigravity enabled → google/gemini-3-flash
• If claude max20 enabled → anthropic/claude-haiku-4-5
• Default → opencode/grok-code (free)

ANTI-PATTERNS (AGENTS)

• High temperature: Don't use >0.3 for code-related agents
• Broad tool access: Prefer explicit include over unrestricted access
• Monolithic prompts: Keep prompts focused; delegate to specialized agents
• Missing fallbacks: Consider free/cheap fallbacks for rate-limited models

SHARED PROMPTS

• build-prompt.ts: Base prompt for build agents (OpenCode default + Sisyphus variants)
• plan-prompt.ts: Base prompt for plan agents (legacy)
• prometheus-prompt.ts: System prompt for Prometheus (Planner) agent
• metis.ts: Metis (Plan Consultant) agent for pre-planning analysis

Used by src/index.ts when creating Builder-Sisyphus and Prometheus (Planner) variants.