## 0.2.0 (2026-02-22)
### 🚀 Features
- **WebMCP Support**: Native browser integration via [`navigator.modelContext`](https://webmachinelearning.github.io/webmcp/)
- Tools registered with `registerTool()` are now automatically available to browser-native agents too
- **Enabled by default** — auto-detects browser support, no configuration needed
- One `registerTool()` call → two delivery channels (proxy + browser)
- Opt-out via `enableWebMcp: false` or `setWebMcpEnabled(false)` at runtime
### 📦 New Files
- `web-mcp-types.ts` — TypeScript types matching the W3C WebMCP spec
- `web-mcp-adapter.ts` — `WebMcpAdapter` class bridging ToolRegistry ↔ `navigator.modelContext`
### 🔄 API Changes
- `WorkerClientInitOptions`: new `enableWebMcp` option (default: `true`)
- `WorkerClient`: new methods `isWebMcpSupported()`, `isWebMcpAvailable()`, `setWebMcpEnabled()`, `isToolRegisteredViaWebMcp()`, `getWebMcpRegisteredTools()`
### ❤️ Thank You
- Michal Kopecký
---
## 0.1.11 (2026-02-16)
### 🔄 Refactoring
- **ToolRegistry**: Extracted into separate class for better separation of concerns
- New `ToolRegistry` class manages tool lifecycle (registration, ref counting, subscriptions)
- `WorkerClient` delegates tool management to `ToolRegistry`
- Simplified logic - tools register locally immediately, sync to worker after init
- Removed pending registration queue - no longer needed
### 🐛 Fixes
- **useMCPTool**: Fixed double registration in React StrictMode
- Added guard pattern with refs to prevent concurrent registrations
- Tool now registers only once even with repeated effect calls
- **MCP Notifications**: Fixed missing tool list change notifications
- MCPController now sends `notifications/tools/list_changed` when tools are added/removed
- MCP clients will be properly notified about dynamic tool changes
### ✅ Testing
- **ToolRegistry**: Complete unit tests (32 tests)
- All public methods covered including edge cases
- Error handling in callback subscriptions
### ❤️ Thank You
- Michal Kopecký
---
## 0.1.10 (2026-02-15)
### 🩹 Fixes
- Fix the types path ([ae07146](https://github.com/mcp-fe/mcp-fe/commit/ae07146))
### ❤️ Thank You
- Michal Kopecký
## 0.1.9 (2026-02-15)
### 🚀 Features
- **MCP Tool Utilities**: New utility functions for accessing tool registry
- **`getRegisteredTools()`**: Get list of all currently registered tool names
- **`getToolInfo(name)`**: Get basic registration info (refCount, isRegistered)
- **`getToolDetails(name)`**: Get complete ToolDefinition with all metadata
- Exported from `@mcp-fe/react-tools` for easy access
### 🔄 Refactoring
- **Type Consolidation**: Unified tool type usage across codebase
- `WorkerClient.toolRegistry` now uses `ToolDefinition` type instead of duplicating structure
- `WorkerClient.getToolDetails()` returns `ToolDefinition & { refCount, isRegistered }`
- Reduced code duplication and improved type safety
### 📦 Updated Components
- **WorkerClient**: Added `getToolDetails()` method for complete tool information
- **react-tools**: New exports for tool utilities in dedicated module
### ❤️ Thank You
- Michal Kopecký
---
## 0.1.8 (2026-02-14)
This was a version bump only, there were no code changes.
## 0.1.7 (2026-02-06)
### 🚀 Features
- **Structured Output Support**: Tools can now return structured data when `outputSchema` is defined ([37d757c](https://github.com/mcp-fe/mcp-fe/commit/37d757c))
- **Automatic Detection**: MCPController detects `outputSchema` presence and handles output accordingly
- **Structured Data**: Tools with `outputSchema` return data as JSON objects instead of serialized text
- **Legacy Support**: Tools without `outputSchema` continue to work with serialized text output
- **Better AI Integration**: AI models can directly parse and manipulate structured outputs
### 📦 Updated Components
- `MCPController`: Added `hasOutputSchema` flag to `pendingToolCalls` for smart output handling
- `handleToolCallResult`: Conditional logic to return structured vs. serialized output
- `ToolHandler` type: Extended to support both text and resource content types
- `WorkerClient`: Updated handler types throughout for structured output compatibility
### 🎯 Use Cases
- **Type-Safe Outputs**: Define clear schemas for tool results
- **Complex Data**: Return nested objects and arrays without serialization
- **AI Understanding**: Models can better understand and work with structured data
### 📖 Documentation & Examples
- New [structured-output.md](./libs/mcp-worker/docs/structured-output.md) guide
- Example: [structured-output.ts](./libs/mcp-worker/examples/structured-output.ts) - WorkerClient usage
- Updated examples README with structured output section
### 🔄 Backward Compatibility
- **100% Backward Compatible**: All existing tools continue to work
- Tools without `outputSchema` maintain legacy serialized text behavior
- No breaking changes to existing APIs
---
## 0.1.6 (2026-02-05)
### 🚀 Features
- **MCP Tool Metadata Support**: Added full support for MCP tool metadata according to MCP specification
- **Annotations**: AI hints for tool behavior (readOnly, destructive, idempotent, openWorld)
- **Output Schema**: JSON Schema for tool outputs
- **Execution Metadata**: Task support configuration
- **Icons**: Visual representation with theme support (light/dark)
- **Custom Metadata**: Extensible `_meta` field for application-specific data
- **Display Title**: Optional human-readable title
### 📦 Updated Components
- `useMCPTool` hook: Extended `UseMCPToolOptions` with metadata fields
- `WorkerClient`: New `options` parameter in `registerTool()` method
- `MCPController`: Metadata parsing and registration
- `ToolRegistry`: Extended `ToolDefinition` with metadata properties
- Exported types: `Icon`, `ToolAnnotations`, `ToolExecution`
### 🔄 Backward Compatibility
- All changes are fully backward compatible
- `description` field is now optional (previously required)
- All metadata fields are optional
- Existing code works without modifications
### 📖 Documentation
- Updated [api-reference.md](./libs/react-tools/docs/api-reference.md) with metadata examples
### ❤️ Thank You
- Michal Kopecký
## 0.1.5 (2026-02-05)
### 🩹 Fixes
- Configure cjs build for react packages ([f931ab8](https://github.com/mcp-fe/mcp-fe/commit/f931ab8))
- Fixed deps for react-event-tracker ([3bfbc6d](https://github.com/mcp-fe/mcp-fe/commit/3bfbc6d))
### ❤️ Thank You
- Michal Kopecký
## 0.1.4 (2026-02-04)
### 🚀 Features
- **Multi-Tab Support**: Added comprehensive multi-tab support with intelligent routing
- Each tab gets unique UUID (crypto.randomUUID()) stored in sessionStorage
- **Smart routing**: If only one tab has a tool, automatically routes to it even if not active
- **Navigation fallback**: When active tab loses tool (navigation), automatically routes to remaining tabs
- **Automatic cleanup**: Tools unregister when page navigates/closes (beforeunload, pagehide events)
- **TabManager class**: Standalone, testable class for tab management logic
- Built-in `list_browser_tabs` meta-tool for tab discovery
- Automatic `tabId` parameter added to all tool schemas
- Tab reference counting for proper cleanup
- Focus tracking with window.focus and document.visibilitychange
### 🎯 Routing Priority (Smart Strategy)
1. Explicit `tabId` parameter (always respected)
2. **Only one tab has tool → use it (even if not active)**
3. Active tab has tool → use it
4. **Active tab lacks tool (navigation) → use first available**
5. No active tab → use first available
### 🐛 Critical Fixes
- **Fixed MCPController recreation bug**: Multiple tabs no longer destroy shared controller
- Worker now reuses existing controller when URL hasn't changed
- Previously, each tab's INIT message recreated controller, losing all registered tabs
- This was causing `list_browser_tabs` to return only the last initialized tab
- Fixed in both SharedWorker and ServiceWorker implementations
### 🩹 Fixes
- **Fixed race condition in tab registration**: REGISTER_TAB now waits for INIT acknowledgment
- Ensures controller is ready before tab registration
- Prevents tabs from being lost during initialization
### 📖 Documentation
- Added comprehensive [Multi-Tab Guide](./libs/mcp-worker/docs/multi-tab.md)
- Updated [Architecture](./libs/mcp-worker/docs/architecture.md) with multi-tab section
- Updated [Guide](./libs/mcp-worker/docs/guide.md) with multi-tab usage
### ❤️ Thank You
- Michal Kopecký
## 0.1.3 (2026-02-04)
### 🩹 Fixes
- Setup mcp-worker as a peerDependency ([f9e52ca](https://github.com/mcp-fe/mcp-fe/commit/f9e52ca))
### ❤️ Thank You
- Michal Kopecký
## 0.1.2 (2026-02-04)
### 🩹 Fixes
- React-tools fixed external packages - do not include react ([efe3e36](https://github.com/mcp-fe/mcp-fe/commit/efe3e36))
### ❤️ Thank You
- Michal Kopecký
## 0.1.1 (2026-02-03)
### 🩹 Fixes
- fix release of react-tools ([d0aac3b](https://github.com/mcp-fe/mcp-fe/commit/d0aac3b))
### ❤️ Thank You
- Michal Kopecký
## 0.1.0 (2026-02-03)
### 🚀 Features
- introduction of dynamic MCP tools ([051b852](https://github.com/mcp-fe/mcp-fe/commit/051b852))
### ❤️ Thank You
- Michal Kopecký
## 0.0.17 (2026-02-02)
This was a version bump only, there were no code changes.
## 0.0.16 (2026-01-29)
This was a version bump only, there were no code changes.
## 0.0.15 (2026-01-29)
### 🩹 Fixes
- Support real JWT token format on server. Improved mock ([7eb8c41](https://github.com/mcp-fe/mcp-fe/commit/7eb8c41))
### ❤️ Thank You
- Michal Kopecký
## 0.0.14 (2026-01-25)
### 🩹 Fixes
- Update CodeQL action to v3 ([48ed307](https://github.com/mcp-fe/mcp-fe/commit/48ed307))
- Expose setAuthToken directly via useReactRouterEventTracker and useTanstackRouterEventTracker ([807e59a](https://github.com/mcp-fe/mcp-fe/commit/807e59a))
### ❤️ Thank You
- Michal Kopecký
## 0.0.13 (2026-01-23)
### 🩹 Fixes
- Specify peerDependencies for react-event-tracker ([9712178](https://github.com/mcp-fe/mcp-fe/commit/9712178))
### ❤️ Thank You
- Michal Kopecký
## 0.0.12 (2026-01-23)
This was a version bump only, there were no code changes.
## 0.0.11 (2026-01-23)
### 🩹 Fixes
- Reconfigure the mcp-worker publish to publish the worker files ([5562fed](https://github.com/mcp-fe/mcp-fe/commit/5562fed))
- Fixed types export for react-event-tracker ([274de1a](https://github.com/mcp-fe/mcp-fe/commit/274de1a))
### ❤️ Thank You
- Michal Kopecký
## 0.0.10 (2026-01-23)
### 🩹 Fixes
- Reconfigure the mcp-worker publish to publish the worker files ([5562fed](https://github.com/mcp-fe/mcp-fe/commit/5562fed))
- Fixed types export for react-event-tracker ([274de1a](https://github.com/mcp-fe/mcp-fe/commit/274de1a))
### ❤️ Thank You
- Michal Kopecký
## 0.0.9 (2026-01-23)
This was a version bump only, there were no code changes.
## 0.0.8 (2026-01-23)
This was a version bump only, there were no code changes.
## 0.0.7 (2026-01-23)
This was a version bump only, there were no code changes.
## 0.0.6 (2026-01-23)
This was a version bump only, there were no code changes.
## 0.0.5 (2026-01-23)
This was a version bump only, there were no code changes.
## 0.0.4 (2026-01-23)
This was a version bump only, there were no code changes.
## 0.0.3 (2026-01-22)
### 🩹 Fixes
- Configure deps ([f05bc81](https://github.com/kopecmi8/mcp-fe/commit/f05bc81))
### ❤️ Thank You
- Michal Kopecký
## 0.0.2 (2026-01-22)
This was a version bump only, there were no code changes.
## 0.0.1 (2026-01-22)
This was a version bump only, there were no code changes.
