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feat: Add tool annotations for improved LLM tool understanding #40

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Merged
cfc4n merged 1 commit into from
Jan 1, 2026
Merged

feat: Add tool annotations for improved LLM tool understanding #40

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26 changes: 26 additions & 0 deletions pkg/services/browser/browser.go
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Original file line number Diff line number Diff line change
Expand Up @@ -139,6 +139,8 @@ func (bs *BrowserServer) Init() error {
bs.AddTool(mcp.NewTool(
"browser_navigate",
mcp.WithDescription("Navigate to a URL"),
mcp.WithTitleAnnotation("Navigate Browser"),
mcp.WithDestructiveHintAnnotation(true),
mcp.WithString("url",
mcp.Description("URL to navigate to"),
mcp.Required(),
Expand All @@ -147,6 +149,8 @@ func (bs *BrowserServer) Init() error {
bs.AddTool(mcp.NewTool(
"browser_screenshot",
mcp.WithDescription("Take a screenshot of the current page or a specific element"),
mcp.WithTitleAnnotation("Take Screenshot"),
mcp.WithDestructiveHintAnnotation(true),
mcp.WithString("name",
mcp.Description("Name for the screenshot"),
mcp.Required(),
Expand All @@ -164,6 +168,8 @@ func (bs *BrowserServer) Init() error {
bs.AddTool(mcp.NewTool(
"browser_click",
mcp.WithDescription("Click an element on the page"),
mcp.WithTitleAnnotation("Click Element"),
mcp.WithDestructiveHintAnnotation(true),
mcp.WithString("selector",
mcp.Description("CSS selector for element to click"),
mcp.Required(),
Expand All @@ -172,6 +178,8 @@ func (bs *BrowserServer) Init() error {
bs.AddTool(mcp.NewTool(
"browser_fill",
mcp.WithDescription("Fill out an input field"),
mcp.WithTitleAnnotation("Fill Input"),
mcp.WithDestructiveHintAnnotation(true),
mcp.WithString("selector",
mcp.Description("CSS selector for input field"),
mcp.Required(),
Expand All @@ -184,6 +192,8 @@ func (bs *BrowserServer) Init() error {
bs.AddTool(mcp.NewTool(
"browser_select",
mcp.WithDescription("Select an element on the page with Select tag"),
mcp.WithTitleAnnotation("Select Option"),
mcp.WithDestructiveHintAnnotation(true),
mcp.WithString("selector",
mcp.Description("CSS selector for element to select"),
mcp.Required(),
Expand All @@ -196,6 +206,8 @@ func (bs *BrowserServer) Init() error {
bs.AddTool(mcp.NewTool(
"browser_hover",
mcp.WithDescription("Hover an element on the page"),
mcp.WithTitleAnnotation("Hover Element"),
mcp.WithDestructiveHintAnnotation(true),
mcp.WithString("selector",
mcp.Description("CSS selector for element to hover"),
mcp.Required(),
Expand All @@ -204,6 +216,8 @@ func (bs *BrowserServer) Init() error {
bs.AddTool(mcp.NewTool(
"browser_evaluate",
mcp.WithDescription("Execute JavaScript in the browser console"),
mcp.WithTitleAnnotation("Evaluate JavaScript"),
mcp.WithDestructiveHintAnnotation(true),
mcp.WithString("script",
mcp.Description("JavaScript code to execute"),
mcp.Required(),
Expand All @@ -213,6 +227,8 @@ func (bs *BrowserServer) Init() error {
bs.AddTool(mcp.NewTool(
"browser_debug_enable",
mcp.WithDescription("Enable JavaScript debugging"),
mcp.WithTitleAnnotation("Toggle Debugging"),
mcp.WithDestructiveHintAnnotation(true),
mcp.WithBoolean("enabled",
mcp.Description("Enable or disable debugging"),
mcp.Required(),
Expand All @@ -222,6 +238,8 @@ func (bs *BrowserServer) Init() error {
bs.AddTool(mcp.NewTool(
"browser_set_breakpoint",
mcp.WithDescription("Set a JavaScript breakpoint"),
mcp.WithTitleAnnotation("Set Breakpoint"),
mcp.WithDestructiveHintAnnotation(true),
mcp.WithString("url",
mcp.Description("URL of the script"),
mcp.Required(),
Expand All @@ -241,6 +259,8 @@ func (bs *BrowserServer) Init() error {
bs.AddTool(mcp.NewTool(
"browser_remove_breakpoint",
mcp.WithDescription("Remove a JavaScript breakpoint"),
mcp.WithTitleAnnotation("Remove Breakpoint"),
mcp.WithDestructiveHintAnnotation(true),
mcp.WithString("breakpointId",
mcp.Description("Breakpoint ID to remove"),
mcp.Required(),
Expand All @@ -250,16 +270,22 @@ func (bs *BrowserServer) Init() error {
bs.AddTool(mcp.NewTool(
"browser_pause",
mcp.WithDescription("Pause JavaScript execution"),
mcp.WithTitleAnnotation("Pause Execution"),
mcp.WithDestructiveHintAnnotation(true),
), bs.handlePause)

bs.AddTool(mcp.NewTool(
"browser_resume",
mcp.WithDescription("Resume JavaScript execution"),
mcp.WithTitleAnnotation("Resume Execution"),
mcp.WithDestructiveHintAnnotation(true),
), bs.handleResume)

bs.AddTool(mcp.NewTool(
"browser_get_callstack",
mcp.WithDescription("Get current call stack when paused"),
mcp.WithTitleAnnotation("Get Call Stack"),
mcp.WithReadOnlyHintAnnotation(true),
), bs.handleGetCallstack)
return nil
}
Expand Down
2 changes: 2 additions & 0 deletions pkg/services/command/command.go
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Original file line number Diff line number Diff line change
Expand Up @@ -97,6 +97,8 @@ func (cs *CommandServer) Init() error {
cs.AddTool(mcp.NewTool(
"execute_command",
mcp.WithDescription("Execute a named command.Only support command execution on macOS and will strictly follow safety guidelines, ensuring that commands are safe and secure"),
mcp.WithTitleAnnotation("Execute Command"),
mcp.WithDestructiveHintAnnotation(true),
mcp.WithString("command",
mcp.Description("The command to execute"),
mcp.Required(),
Expand Down
16 changes: 16 additions & 0 deletions pkg/services/filesystem/file_system.go
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Original file line number Diff line number Diff line change
Expand Up @@ -110,6 +110,8 @@ func (fs *FilesystemServer) Init() error {
// Register tool handlers
fs.AddTool(mcp.NewTool("read_file",
mcp.WithDescription("Read the complete contents of a file from the file system."),
mcp.WithTitleAnnotation("Read File"),
mcp.WithReadOnlyHintAnnotation(true),
mcp.WithString("path",
mcp.Description("Relative path to the file to read"),
mcp.Required(),
Expand All @@ -119,6 +121,8 @@ func (fs *FilesystemServer) Init() error {
fs.AddTool(mcp.NewTool(
"write_file",
mcp.WithDescription("Create a new file or overwrite an existing file with new content."),
mcp.WithTitleAnnotation("Write File"),
mcp.WithDestructiveHintAnnotation(true),
mcp.WithString("path",
mcp.Description("Relative Path where to write the file"),
mcp.Required(),
Expand All @@ -132,6 +136,8 @@ func (fs *FilesystemServer) Init() error {
fs.AddTool(mcp.NewTool(
"list_directory",
mcp.WithDescription("Get a detailed listing of all files and directories in a specified path."),
mcp.WithTitleAnnotation("List Directory"),
mcp.WithReadOnlyHintAnnotation(true),
mcp.WithString("path",
mcp.Description("Relative Path of the directory to list"),
mcp.Required(),
Expand All @@ -141,6 +147,8 @@ func (fs *FilesystemServer) Init() error {
fs.AddTool(mcp.NewTool(
"create_directory",
mcp.WithDescription("Create a new directory or ensure a directory exists."),
mcp.WithTitleAnnotation("Create Directory"),
mcp.WithDestructiveHintAnnotation(true),
mcp.WithString("path",
mcp.Description("Relative Path of the directory to create"),
mcp.Required(),
Expand All @@ -150,6 +158,8 @@ func (fs *FilesystemServer) Init() error {
fs.AddTool(mcp.NewTool(
"move_file",
mcp.WithDescription("Move or rename files and directories."),
mcp.WithTitleAnnotation("Move File"),
mcp.WithDestructiveHintAnnotation(true),
mcp.WithString("source",
mcp.Description("Relative Source path of the file or directory"),
mcp.Required(),
Expand All @@ -163,6 +173,8 @@ func (fs *FilesystemServer) Init() error {
fs.AddTool(mcp.NewTool(
"search_files",
mcp.WithDescription("Recursively search for files and directories matching a pattern."),
mcp.WithTitleAnnotation("Search Files"),
mcp.WithReadOnlyHintAnnotation(true),
mcp.WithString("path",
mcp.Description("Relative Starting path for the search"),
mcp.Required(),
Expand All @@ -176,6 +188,8 @@ func (fs *FilesystemServer) Init() error {
fs.AddTool(mcp.NewTool(
"get_file_info",
mcp.WithDescription("Retrieve detailed metadata about a file or directory."),
mcp.WithTitleAnnotation("Get File Info"),
mcp.WithReadOnlyHintAnnotation(true),
mcp.WithString("path",
mcp.Description("Relative Path to the file or directory"),
mcp.Required(),
Expand All @@ -185,6 +199,8 @@ func (fs *FilesystemServer) Init() error {
fs.AddTool(mcp.NewTool(
"list_allowed_directories",
mcp.WithDescription("Returns the list of directories that this server is allowed to access."),
mcp.WithTitleAnnotation("List Allowed Directories"),
mcp.WithReadOnlyHintAnnotation(true),
), fs.handleListAllowedDirectories)
return nil
}
Expand Down
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