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PROJECT KNOWLEDGE BASE

Generated: 2026-01-09T15:38:00+09:00 Commit: 0581793 Branch: dev

OVERVIEW

OpenCode plugin implementing Claude Code/AmpCode features. Multi-model agent orchestration (GPT-5.2, Claude, Gemini, Grok), LSP tools (11), AST-Grep search, MCP integrations (context7, websearch_exa, grep_app). "oh-my-zsh" for OpenCode.

STRUCTURE

oh-my-opencode/
├── src/
│   ├── agents/        # AI agents (7): Sisyphus, oracle, librarian, explore, frontend, document-writer, multimodal-looker
│   ├── hooks/         # 22 lifecycle hooks - see src/hooks/AGENTS.md
│   ├── tools/         # LSP, AST-Grep, Grep, Glob, session mgmt - see src/tools/AGENTS.md
│   ├── features/      # Claude Code compat layer - see src/features/AGENTS.md
│   ├── auth/          # Google Antigravity OAuth - see src/auth/AGENTS.md
│   ├── shared/        # Cross-cutting utilities - see src/shared/AGENTS.md
│   ├── cli/           # CLI installer, doctor - see src/cli/AGENTS.md
│   ├── mcp/           # MCP configs: context7, grep_app
│   ├── config/        # Zod schema, TypeScript types
│   └── index.ts       # Main plugin entry (548 lines)
├── script/            # build-schema.ts, publish.ts, generate-changelog.ts
├── assets/            # JSON schema
└── dist/              # Build output (ESM + .d.ts)

WHERE TO LOOK

Task Location Notes
Add agent src/agents/ Create .ts, add to builtinAgents in index.ts, update types.ts
Add hook src/hooks/ Create dir with createXXXHook(), export from index.ts
Add tool src/tools/ Dir with index/types/constants/tools.ts, add to builtinTools
Add MCP src/mcp/ Create config, add to index.ts and types.ts
Add skill src/features/builtin-skills/ Create skill dir with SKILL.md
LSP behavior src/tools/lsp/ client.ts (connection), tools.ts (handlers)
AST-Grep src/tools/ast-grep/ napi.ts for @ast-grep/napi binding
Google OAuth src/auth/antigravity/ OAuth plugin for Google/Gemini models
Config schema src/config/schema.ts Zod schema, run bun run build:schema after changes
Claude Code compat src/features/claude-code-*-loader/ Command, skill, agent, mcp loaders
Background agents src/features/background-agent/ manager.ts for task management
Skill MCP src/features/skill-mcp-manager/ MCP servers embedded in skills
Interactive terminal src/tools/interactive-bash/ tmux session management
CLI installer src/cli/install.ts Interactive TUI installation
Doctor checks src/cli/doctor/checks/ Health checks for environment
Shared utilities src/shared/ Cross-cutting utilities
Slash commands src/hooks/auto-slash-command/ Auto-detect and execute /command patterns
Ralph Loop src/hooks/ralph-loop/ Self-referential dev loop until completion
Orchestrator src/hooks/sisyphus-orchestrator/ Main orchestration hook (660 lines)

TDD (Test-Driven Development)

MANDATORY for new features and bug fixes. Follow RED-GREEN-REFACTOR:

1. RED    - Write failing test first (test MUST fail)
2. GREEN  - Write MINIMAL code to pass (nothing more)
3. REFACTOR - Clean up while tests stay GREEN
4. REPEAT - Next test case
Phase Action Verification
RED Write test describing expected behavior bun test -> FAIL (expected)
GREEN Implement minimum code to pass bun test -> PASS
REFACTOR Improve code quality, remove duplication bun test -> PASS (must stay green)

Rules:

  • NEVER write implementation before test
  • NEVER delete failing tests to "pass" - fix the code
  • One test at a time - don't batch
  • Test file naming: *.test.ts alongside source
  • BDD comments: #given, #when, #then (same as AAA)

CONVENTIONS

  • Package manager: Bun only (bun run, bun build, bunx)
  • Types: bun-types (not @types/node)
  • Build: bun build (ESM) + tsc --emitDeclarationOnly
  • Exports: Barrel pattern in index.ts; explicit named exports for tools/hooks
  • Naming: kebab-case directories, createXXXHook/createXXXTool factories
  • Testing: BDD comments #given/#when/#then, TDD workflow (RED-GREEN-REFACTOR)
  • Temperature: 0.1 for code agents, max 0.3

ANTI-PATTERNS (THIS PROJECT)

  • npm/yarn: Use bun exclusively
  • @types/node: Use bun-types
  • Bash file ops: Never mkdir/touch/rm/cp/mv for file creation in code
  • Direct bun publish: GitHub Actions workflow_dispatch only (OIDC provenance)
  • Local version bump: Version managed by CI workflow
  • Year 2024: NEVER use 2024 in code/prompts (use current year)
  • Rush completion: Never mark tasks complete without verification
  • Over-exploration: Stop searching when sufficient context found
  • High temperature: Don't use >0.3 for code-related agents
  • Broad tool access: Prefer explicit include over unrestricted access
  • Sequential agent calls: Use sisyphus_task for parallel execution
  • Heavy PreToolUse logic: Slows every tool call
  • Self-planning for complex tasks: Spawn planning agent (Prometheus) instead
  • Trust agent self-reports: ALWAYS verify results independently
  • Skip TODO creation: Multi-step tasks MUST have todos first
  • Batch completions: Mark TODOs complete immediately, don't group
  • Giant commits: 3+ files = 2+ commits minimum
  • Separate test from impl: Same commit always

UNIQUE STYLES

  • Platform: Union type "darwin" | "linux" | "win32" | "unsupported"
  • Optional props: Extensive ? for optional interface properties
  • Flexible objects: Record<string, unknown> for dynamic configs
  • Error handling: Consistent try/catch with async/await
  • Agent tools: tools: { include: [...] } or tools: { exclude: [...] }
  • Temperature: Most agents use 0.1 for consistency
  • Hook naming: createXXXHook function convention
  • Factory pattern: Components created via createXXX() functions

AGENT MODELS

Agent Default Model Purpose
Sisyphus anthropic/claude-opus-4-5 Primary orchestrator
oracle openai/gpt-5.2 Read-only consultation. High-IQ debugging, architecture
librarian opencode/glm-4.7-free Multi-repo analysis, docs
explore opencode/grok-code Fast codebase exploration
frontend-ui-ux-engineer google/gemini-3-pro-preview UI generation
document-writer google/gemini-3-pro-preview Technical docs
multimodal-looker google/gemini-3-flash PDF/image analysis

COMMANDS

bun run typecheck      # Type check
bun run build          # ESM + declarations + schema
bun run rebuild        # Clean + Build
bun run build:schema   # Schema only
bun test               # Run tests (76 test files, 2559+ BDD assertions)

DEPLOYMENT

GitHub Actions workflow_dispatch only

  1. Never modify package.json version locally
  2. Commit & push changes
  3. Trigger publish workflow: gh workflow run publish -f bump=patch

Critical: Never bun publish directly. Never bump version locally.

CI PIPELINE

  • ci.yml: Parallel test/typecheck, build verification, auto-commit schema on master, rolling next draft release
  • publish.yml: Manual workflow_dispatch, version bump, changelog, OIDC npm publish
  • sisyphus-agent.yml: Agent-in-CI for automated issue handling via @sisyphus-dev-ai mentions

COMPLEXITY HOTSPOTS

File Lines Description
src/agents/orchestrator-sisyphus.ts 1484 Orchestrator agent, complex delegation
src/features/builtin-skills/skills.ts 1230 Skill definitions (frontend-ui-ux, playwright)
src/agents/prometheus-prompt.ts 982 Planning agent system prompt
src/auth/antigravity/fetch.ts 798 Token refresh, URL rewriting
src/auth/antigravity/thinking.ts 755 Thinking block extraction
src/cli/config-manager.ts 725 JSONC parsing, env detection
src/hooks/sisyphus-orchestrator/index.ts 660 Orchestrator hook impl
src/agents/sisyphus.ts 641 Main Sisyphus prompt
src/tools/lsp/client.ts 612 LSP protocol, JSON-RPC
src/features/background-agent/manager.ts 608 Task lifecycle
src/auth/antigravity/response.ts 599 Response transformation, streaming
src/hooks/anthropic-context-window-limit-recovery/executor.ts 556 Multi-stage recovery
src/index.ts 548 Main plugin, all hook/tool init

NOTES

  • Testing: Bun native test (bun test), BDD-style #given/#when/#then, 76 test files
  • OpenCode: Requires >= 1.0.150
  • Multi-lang docs: README.md (EN), README.ko.md (KO), README.ja.md (JA), README.zh-cn.md (ZH-CN)
  • Config: ~/.config/opencode/oh-my-opencode.json (user) or .opencode/oh-my-opencode.json (project)
  • Trusted deps: @ast-grep/cli, @ast-grep/napi, @code-yeongyu/comment-checker
  • JSONC support: Config files support comments (// comment, /* block */) and trailing commas
  • Claude Code Compat: Full compatibility layer for settings.json hooks, commands, skills, agents, MCPs
  • Skill MCP: Skills can embed MCP server configs in YAML frontmatter
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