OpenCode plugin (npm: `oh-my-opencode`, dual-published as `oh-my-openagent` during the rename transition) extending OpenCode with 11 agents, 54–61 lifecycle hooks (base / +team-mode) across 59 dirs, 20–39 tools (gated by config flags including team-mode), 3-tier MCP system (built-in + .mcp.json + skill-embedded), Hashline LINE#ID edit tool, IntentGate keyword detector, Team Mode (parallel multi-agent coordination, OFF by default), Boulder feature (boulder-state work tracking + cli/boulder subcommand), configurable agent ordering, and Claude Code compatibility. **Repository contains 2165 TypeScript files across `src/`, `script/`, `test-support/`, and `web/`, ~314k LOC; `src/` itself has 122 barrel `index.ts` files.** Entry: `src/index.ts` is now an 18-line wrapper that delegates to `src/testing/create-plugin-module.ts``createPluginModule()` → 7-step init.
├── web/ # Marketing site (Next.js 15 + Cloudflare Workers, deployed to ohmyopenagent.com via opennextjs-cloudflare). Independent package with own bun.lock — see web/AGENTS.md
> Note: `lsp_*` tool names are now served by built-in MCP server `lsp` (via `packages/lsp-tools-mcp`), preserving existing names through OpenCode MCP namespacing.
OFF by default. Parallel multi-agent coordination, modeled after Claude Code Agent Teams. Enable via `team_mode.enabled` in `.opencode/oh-my-opencode.jsonc` or user config; restart OpenCode after change.
Teams live as directories under `~/.omo/teams/{name}/config.json` (user) or `<project>/.omo/teams/{name}/config.json` (project; project beats user on collisions). Members declared as `kind: "subagent_type"` (direct agent) or `kind: "category"` (routed through `sisyphus-junior`).
-`conditional`: hephaestus (lacks `teammate: "allow"` permission by default — apply D-36 in `tool-config-handler.ts` or use `subagent_type: "sisyphus"` instead)
-`hard-reject`: oracle, librarian, explore, multimodal-looker, metis, momus, prometheus (rejected at parse — use `task`/delegate-task)
**Implementation:** [`src/features/team-mode/`](file:///Users/yeongyu/local-workspaces/omo/src/features/team-mode/AGENTS.md). User docs: [`docs/guide/team-mode.md`](file:///Users/yeongyu/local-workspaces/omo/docs/guide/team-mode.md).
| Add new hook | `src/hooks/{name}/` + register in `src/plugin/hooks/create-*-hooks.ts` | Pick the right tier (Session/ToolGuard/Transform/Continuation/Skill) |
| Add new tool | `src/tools/{name}/` + register in `src/plugin/tool-registry.ts` | Factory `createXXXTool` (most) or direct `ToolDefinition` (interactive_bash) |
- **Canonical agent order:** Sisyphus → Hephaestus → Prometheus → Atlas. Enforced by `installAgentSortShim()` (patches `Array.prototype.toSorted`/`.sort` narrowly when the array contains ≥2 canonical core agents). See [`src/plugin-handlers/AGENTS.md`](file:///Users/yeongyu/local-workspaces/omo/src/plugin-handlers/AGENTS.md) for the full history of why this exists.
- **Hashline edit + read pairing:** Every `Read` tool output is tagged with `LINE#ID` content hashes; `hashline_edit` validates the hash before applying. Stale hash → reject.
- **Per-session MCP isolation:** Tier-3 MCP clients keyed by `${sessionID}:${skillName}:${serverName}` so the same skill in two sessions does not share state.
- **Two fallback systems:** `model-fallback` (proactive, chat.params) vs `runtime-fallback` (reactive, session.error). They operate independently — no direct integration.
- **OpenClaw bidirectional:** Outbound dispatchers fire on session events; inbound daemon polls Discord/Telegram and `send-keys` replies into the tracked tmux pane.
- **Internal message injection is dangerous:** OpenCode의 stupid한 설계로 플러그인이 `session.prompt` / `session.promptAsync` 같은 메인 세션 메시지 API를 통해 메인 시스템을 망가뜨릴 수 있다.
- Root cause to remember: OpenCode `promptAsync` returns before the prompt is durably accepted, and later failures can arrive as `session.error`. Multiple OMO hooks/tools can observe the same idle/error/completion edge and inject the same internal message into a live parent session.
- Treat every `session.prompt` / `session.promptAsync` call as a write to shared session state. Production code may call them only inside `src/shared/prompt-async-gate.ts`; all other routes must use `dispatchInternalPrompt({ mode: "async" | "sync", ... })` or a proven equivalent gate.
- Required gate semantics: reserve per session before dispatch, check active session state, keep a short post-dispatch hold, release only on intentional abort/recovery paths, and restore optimistic task/loop state when dispatch is skipped or fails later.
- Forbidden patterns: raw prompt calls outside the shared gate, `postDispatchHoldMs: 0`, no-session fallback to raw prompt, and new internal message routes without duplicate-injection regression tests.
- Tests must pin both the shared invariant and the route behavior: update the static raw-prompt audit, then add route-specific tests proving concurrent/live/idle/error triggers collapse to one dispatch. Cover background completion wakes, fallback retries, team mailbox live delivery, recovery continuations, CLI run resumes, Claude Code hook injections, and sync/background subagent prompts.
- **Imports:** relative within a module, barrel imports across modules (`import { log } from "./shared"`). **No path aliases in `src/`** — never `@/`. `web/` is the only exception: it uses `@/*` (Next.js convention) and has its own tsconfig.
- **Dual package:** `oh-my-opencode` + `oh-my-openagent` published simultaneously during the rename transition.
- **Comments:** AI slop comment patterns blocked by `comment-checker` hook (binary: `@code-yeongyu/comment-checker`). Use `// @allow` to bypass single line, `// comment-checker-disable-file` at file top to bypass file. Sparingly.
## ANTI-PATTERNS (BLOCKING)
- Never `as any`, `@ts-ignore`, `@ts-expect-error`.
- Never suppress lint/type errors.
- Never add emojis to code/comments unless user explicitly asks.
- Never commit unless explicitly requested.
- Never run `bun publish` directly — use the GitHub Actions workflow.
- Never modify `package.json``version` locally — handled by publish workflow.
- Never write to existing files without reading them first (`write-existing-file-guard`).
- Never use `background_cancel(all=true)` — cancel by `taskId` individually.
- Never delete a failing test to make a build green. Fix the code.
- Never em dashes / en dashes / AI filler ("simply", "obviously", "clearly", "moreover", "furthermore") in generated content.
- Never create catch-all files (`utils.ts`, `helpers.ts`, `service.ts`).
- Never empty catch blocks `catch(e) {}`.
- Never test with Arrange-Act-Assert comments — use given/when/then.
- Never dump business logic into `index.ts` — barrel exports only.
- Prometheus may ONLY edit `.md` files (enforced by `prometheus-md-only` hook); FORBIDDEN paths: `src/`, `package.json`, config files.
- **Logger:** writes `oh-my-opencode.log` to the OS temp dir (`/tmp` on Linux, `/var/folders/.../T/` on macOS, `%TEMP%` on Windows — i.e. Node's `os.tmpdir()`). Rotated at 50 MB; previous segments live at `.1` and `.2` (oldest dropped).
- **Background tasks:** 5 concurrent per `${providerID}/${modelID}` key by default (configurable via `background_task.modelConcurrency` / `providerConcurrency`); FIFO queue when slots full.
- **Plugin load timeout:** 10s for Claude Code plugin discovery.
- **Model fallback:** per-agent chains in `src/shared/model-requirements.ts`. **There is no single global priority.**
- **Architecture rules** enforced via the `rules-injector` hook reading `.omo/rules/*.md`. As of v4.2.0 only `test-discipline.md` ships; legacy `modular-code-enforcement.md` was retired.
- **zauc-mocks pattern:** 9 directories named `zauc-mocks-*` (5 in `src/hooks/`, 2 in `src/tools/`, 1 each in `src/mcp/` and `src/shared/`) hold `mock.module()` setup that must load alphabetically before the tests that consume those mocked modules. The `zauc-` prefix is purely a sort-order hack for `bun:test` discovery; these are NOT hooks/tools.
- **Test discipline meta-audits:** two files (`src/shared/mock-module-lifecycle-audit.test.ts` and `src/shared/prompt-async-route-audit.test.ts`) parse the entire codebase via the TS compiler API and FAIL the suite when an architectural invariant is violated (`mock.module()` without restore, raw `session.promptAsync` outside the gate).
- **Docs:** see [`docs/guide/`](file:///Users/yeongyu/local-workspaces/omo/docs/guide/) for user-facing guides (overview, installation, orchestration, agent-model-matching, team-mode), [`docs/reference/`](file:///Users/yeongyu/local-workspaces/omo/docs/reference/) for CLI/configuration/features reference. v4.2.0+ adds [`CHANGELOG.md`](file:///Users/yeongyu/local-workspaces/omo/CHANGELOG.md), [`docs/reference/known-issues.md`](file:///Users/yeongyu/local-workspaces/omo/docs/reference/known-issues.md), [`docs/reference/prompt-async-gate-rfc.md`](file:///Users/yeongyu/local-workspaces/omo/docs/reference/prompt-async-gate-rfc.md), and [`docs/reference/release-process.md`](file:///Users/yeongyu/local-workspaces/omo/docs/reference/release-process.md).
- **Rules files** (auto-injected by `rules-injector` hook): [`.omo/rules/modular-code-enforcement.md`](file:///Users/yeongyu/local-workspaces/omo/.omo/rules/modular-code-enforcement.md) + [`.omo/rules/test-discipline.md`](file:///Users/yeongyu/local-workspaces/omo/.omo/rules/test-discipline.md) (forbids `setTimeout(resolve, N)` / `await sleep(N)` in tests unless time IS the SUT). Scans `.omo/rules/`, `.sisyphus/rules/`, `.claude/rules/`, `.cursor/rules/`, `.github/instructions/`, plus `.github/copilot-instructions.md` and `.mdc` files.
- **Process cleanup:** Background-agent error handlers are now log-only — no force-exit on transient errors. Opt out entirely via `OMO_DISABLE_PROCESS_CLEANUP=1` env var.
- **First-prompt watchdog:** `src/hooks/runtime-fallback/first-prompt-watchdog.ts` (193 LOC) detects subagent sessions producing no progress within 90s and triggers fallback / abort.
- **ParentWakeNotifier:** Background-agent parent-wake state extracted to `src/features/background-agent/parent-wake-notifier.ts` (432 LOC) with dependency-injected client and enqueue callback.
- **Workspace migration:** Runtime state migrated from `.sisyphus/` → `.omo/`. Legacy `.sisyphus/` still exists during transition; `src/shared/legacy-workspace-migration.ts` copies it forward on first load.
- **CI nuance:** PRs targeting `master` are hard-blocked — they MUST target `dev`. CI auto-commits schema changes on master push and creates a draft "next" release on dev push.
