New Features

OmO Agent Model Fallback Chain

• OmO agent now inherits OpenCode system default model as fallback, providing better flexibility in model selection

Improvements

OmO System Prompt Enhancement

• Got some feedbacks about too much subagent (which I still think make sense) but refined prompt to be more precise

Default permissions

• Now by default web fetch and external directory permissions are automatically allowed

Cleaner Terminal Experience

• Removed terminal title update feature (session-rename-hook) as it is supported by the opencode team

Bug Fixes

• fix(auth): Resolved Google Antigravity OAuth 404 error by using fallback project ID
• fix(agents): Restricted OmO-Plan to read-only tools, properly inheriting from default plan agent

Documentation

• Added concrete oh-my-opencode.json configuration examples to LLM installation guide
• Added opencode-antigravity-auth plugin guide and model override documentation

• 17b4304 Expand Todo Management section with detailed guidelines
• c6595be Add OmO agent model fallback chain to inherit OpenCode system default (#79)
• e144dd5 Merge branch 'remove-session-rename-hook'
• 8cdbd1c refactor: remove terminal title update feature
• 276b1ba Merge branch 'fix-omo-plan-agent-permissions'
• 1de27e4 Merge branch 'allow-external-read-webfetch-hooks'
• 98ffe3f feat: auto-allow webfetch and external_directory permissions
• 0261652 Add concrete oh-my-opencode.json configuration examples to LLM installation guide
• 9cef9d1 Add opencode-antigravity-auth plugin guide and oh-my-opencode.json model override documentation
• 67bcd4d fix(auth): resolve Google Antigravity OAuth 404 error by using fallback project ID
• 1ecf35f fix(agents): restrict OmO-Plan to read-only tools, inherit from default plan agent (#72)

• f6a5096 Add plan agent system prompt and permission configuration to OmO-Plan
• 0625ebb Add star request prompt to LLM installation guide
• 942fbde Emphasizing that this is not another agent shit
• 980ffe8 Update README Image

Token Efficiency Improvements

This release significantly reduces tool description token usage, saving context window space.

LSP Tools (#71)

Other Tools (#73)

Combined Impact

• Total character reduction: ~4,500 → ~1,380 chars (~69%)
• Estimated token savings: ~800-1000 tokens per conversation

Commits

• 90baab3 fix(agents): restrict OmO-Plan to read-only tools, inherit from default plan agent (#72) (#75)
• 715756b Optimize tool descriptions for token efficiency (#73)
• cdde8da Optimize LSP tool descriptions for token efficiency (#71)
• d7ce740 Update README

• de57f84 docs: update README with subscription messaging and installation guidelines
• b984bfd fix(session-notification): skip notification for subagent sessions (#70)
• ecc8ade Leverage your subscriptions
• 33d2a00 Update README

• 6ab0ff7 refactor(agents): improve librarian agent framing as 'Reference Grep' for parallel structure with explore
• 2706fe4 refactor(agents): restructure OmO system prompt with Phase-based architecture
• 08d612d docs: update AGENTS.md with latest metadata and OpenCode version
• 846bb7a Update README
• 72d9d13 fix(hook-message-injector): add validation to prevent empty message injection and improve logging
• 337b2e7 fix(google-auth): enable google antigravity auth by default (#66)
• d40add5 docs: fix outdated librarian model and add empty-message-sanitizer hook documentation
• 7293b88 feat(hooks): add empty-message-sanitizer to prevent API errors from empty chat messages
• 3761d45 Merge branch 'fix-empty-message-content'
• 1e8de07 fix(antigravity): handle multiple FREE tier ID formats in onboarding
• 838f49b fix(session-recovery): Replace empty text parts before injecting new ones
• ed233d7 fix(antigravity): implement FREE tier onboarding via onboardUser API
• cb360e0 refactor(omo): balance proactivity with user confirmation in prompt
• 4112be7 feat(background-task): add all parameter to cancel all running tasks at once
• b461ef4 feat(anthropic-auto-compact): Add tool output truncation recovery layer for token limit handling (#63)
• 059f2bf fix(antigravity): fix auth on free plan with random project ID fallback
• 407eeb3 fix(anthropic-auto-compact): use OpenCode's official compaction mechanism and proper retry
• 7c9b9f5 fix(session-notification): Replace blocking MessageBox with native toast on Windows (#62)
• 13a47c5 refactor(agents): simplify explore agent prompt for clarity and efficiency
• 3e1a270 fix(lsp): cleanup orphan LSP servers on process exit

Thank you to 1 community contributor:

• @junhoyeo:
  • fix(session-notification): Replace blocking MessageBox with native toast on Windows (#62)

Bug Fixes

fix(session-notification): Replace blocking MessageBox with native toast on Windows

• Windows UX 대폭 개선: System.Windows.Forms.MessageBox (blocking modal) → Windows.UI.Notifications.ToastNotificationManager (non-blocking toast)
• 플랫폼별 올바른 이스케이핑 적용: 각 플랫폼 셸 특성에 맞게 수정
  • macOS: AppleScript용 백슬래시 처리 (\\ → \\\\, " → \")
  • Linux: raw 값 처리 (셸이 자동 처리)
  • Windows: PowerShell용 작은따옴표 이스케이핑 (' → '')
• 에러 핸들링 추가: Windows에서 graceful degradation 지원 (older Windows versions)
• 코드 구조 개선: 플랫폼별 이스케이핑 로직을 각 case 블록으로 분리하여 가독성 향상

Technical Details:

• 사용자 입력 없음: config-driven values만 사용하여 보안 위험 감소
• PowerShell 단일 따옴표 문자열 내 안전한 값 삽입
• 타입 에러 없음: LSP diagnostics clean

Fixes: #62

• da63b09 fix(session-notification): Replace blocking MessageBox with native toast on Windows (#62)

Thank you to our community contributor:

• @junhoyeo: fix(session-notification): Replace blocking MessageBox with native toast on Windows (#62)
• da63b09 fix(session-notification): Replace blocking MessageBox with native toast on Windows (#62)

Thank you to our community contributor:

• @junhoyeo: fix(session-notification): Replace blocking MessageBox with native toast on Windows (#62)

Bug Fixes and Improvements

This patch release includes several platform compatibility fixes and stability improvements:

• Windows Compatibility: Improved path handling and shell configuration for better Windows support.
• MCP Tools: Fixed agent configuration to correctly enable MCP tools using exclude patterns.
• Background Agent: Prevented recursive tool calls and added logic to wait for session todos completion.
• Documentation: Added Japanese README translation and updated language selector links.
• Session Recovery: Improved logic to detect empty content messages in error patterns.
• Terminal Security: Blocked tmux output capture commands to enhance security.
• Token Management: Implemented fallback mechanism for auto-compact token limit recovery.
• WSL Support: Suppressed stderr output from Linux notification commands to fix WSL errors.

• be90045 fix: Improve Windows compatibility for paths and shell config
• a10ee64 fix(agents): Use exclude pattern for tools config to enable MCP tools
• 116a90d enhance(background-agent): Prevent recursive tool calls and wait for session todos before completion
• 060e58e Update AGENTS.md
• 780bb37 docs: Add Japanese README translation and update language selector links
• bf39c83 Fix: detect empty content messages in session-recovery error patterns
• 9b2048b feat(interactive-bash): block tmux output capture commands
• cea64e4 feat(#61): Implement fallback mechanism for auto-compact token limit recovery
• 151ebbf Suppress stderr output from Linux notification commands to fix WSL errors

v2.1.0

This release focuses on making OmO smarter, more efficient, and more stable.

New Features

OmO is Now Much Smarter

• Clarified when to use explore vs librarian agents - no more over-calling
• OmO now treats explore agents as "contextual grep" and librarian as an online helper
• Frontend-UI-UX-Engineer is now called more actively for UI work

Librarian is Sonnet Again, with Clear Purpose

• Simplified prompt for pure, smart librarian behavior
• TYPE A (Conceptual) vs TYPE B (Implementation) classification
• PHASE 0-1 Structured Approach for smarter tool selection
• Web search only activated for recent resources; prefers GitHub for code snippets

Interactive Bash (tmux Support)

• New interactive_bash tool for managing long-running processes
• No more agent timeouts when running dev servers or REPLs
• Quote-aware command parsing for complex shell operations
• Automatically activates if tmux is installed on your system

Context Injection

• New createEnvContext() automatically injects:
  • Current Date & Time (Timezone aware)
  • Locale
  • Platform details
• The agent now knows it's 3 AM on macOS when your build fails

Improvements & Fixes

Smarter Resource Management

• Recursion Prevention: Subagents and Oracle banned from calling background_task or task tools recursively
• Lazy Exploration: OmO no longer calls Explore agent on every single request
• Background Mode: Automatically restores previous agent mode when background tasks complete

Bug Fixes

• English Enforcement: All subagents strictly instructed to prompt in English internally
• Todo Continuation: Fixed remindedSessions not clearing properly
• Session Recovery: Added filesystem fallback when API returns empty session parts
• Agent Mode Persistence: Fixed respect for previous message's agent mode in message sending hooks

Commits

• 689c568 enhance(agents): Add comprehensive guardrails, Oracle examples, and specialized playbooks to OmO prompt
• 906d304 Restore model to claude-opus-4-5 with thinking enabled, fix maxTokens to 64000 (correct max output for Opus 4.5 per Anthropic docs)
• 424723f refactor(agents): Complete rewrite of OmO system prompt with Task Complexity assessment
• 3ba5e1a Add date/time context to Librarian agent, emphasize NOT 2024
• e324f09 refactor(agents): Restructure Librarian prompt with clear request classification flow
• 9f636e1 fix(agents): enforce English prompting for all subagents (#58)
• 5ce025f feat(agents): prevent all subagents from accessing background_task tool
• 153fa84 Add tmux availability check for conditional interactive_bash tool registration
• 2d2834f feat(agents): prevent oracle from calling task tool to avoid recursive invocation
• ab37193 Clarify that today's date is NOT 2024 in envContext
• aa2f9a6 OmO to not to call Explore every single time, only when required
• e326e2d Interactive Bash Simpler
• f19a7a5 Specify agents
• 03a4501 refactor(hooks): improve interactive bash session tracking and command parsing
• c2e96f1 feat(hooks): restrict background_task for task tool subagents
• e8e10b9 fix(hooks): clear remindedSessions on assistant response to enable repeated continuation
• 5cbef25 feat(tools): add interactive_bash tool for tmux session management
• 2524c90 fix(hooks): add lowercase tool names to truncator hooks
• 50112b9 feat(agents): inject environment context into OmO system prompt
• 355fa35 fix(hooks): respect previous message's agent mode in message sending hooks
• 9aab980 fix(session-recovery): fallback to filesystem when API parts empty

Summary

Bug Fixes:

• Fixed unknown version display in auto-update-checker and improved JSONC parsing
• Fixed empty response errors in session-recovery by adding placeholder messages for thinking-only messages

New Hook:

• Added non-interactive-env hook that sets non-interactive environment variables (CI, DEBIAN_FRONTEND, etc.) for bash commands

• 7fd52e2 refactor(non-interactive-env): use args.env instead of command prepending
• 08481c0 refactor(non-interactive-env): remove regex-based TUI blocking
• 192e8ad refactor(hooks): rename interactive-bash-blocker to non-interactive-env
• 5dd4d97 fix(auto-update-checker): resolve unknown version display and improve JSONC parsing (#54)
• b1abb79 refactor(interactive-bash-blocker): replace regex blocking with environment configuration
• 8618d57 add missing schema components
• 4b6b725 feat(hooks): Add interactive-bash-blocker hook
• 1aaa6e6 fix(session-recovery): Add placeholder message for thinking-only messages

Thank you to 1 community contributor:

• @junhoyeo:
  • fix(auto-update-checker): resolve unknown version display and improve JSONC parsing (#54)

Highlights

OmO is now the default agent - OmO (Claude Opus 4.5) and OmO-Plan have been promoted as primary agents, providing enhanced orchestration capabilities.

Bug Fixes

• Fixed session notification failures on WSL environments
• Agent names are now case-insensitive in config

Documentation

• Updated README with OmO documentation and build agent override info
• Corrected disable_build default value documentation

• 7e4b633 feat(agents): add OmO and OmO-Plan as primary agents, demote build/plan
• f44555a feat(agents): make OmO default agent via build name hack
• cccc7b7 docs: fix incorrect default value for disable_build option
• 056b144 fix(session-notification): gracefully handle notify-send failures on WSL
• 7fef07d fix(config): normalize agent names to support case-insensitive config
• 62307d9 docs: document missing hooks and permission options in README
• 24f2ee0 docs: document OmO and build agent override capability in README