Function toolSearchSimilarity

tools/builtin.go:981–1010

(a, b string)

		Name:            "tool_search",
		Description:     "Search for and load tools that are not in the default tool list. Use this when you need a specific tool that isn't available.\n\nQuery syntax:\n  \"select:Name1,Name2\" — directly load specific tools by exact name\n  \"+prefix keyword\" — filter tools whose name starts with prefix, ranked by keyword relevance\n  \"keyword1 keyword2\" — search all deferred tools by name and description\n\nAfter loading with select:, the tool becomes available for immediate use.",
		InputPrototype:  ToolSearchInput{},
		Aliases:         []string{"search_tools"},
		ReadOnly:        BoolPtr(true),
		ConcurrencySafe: BoolPtr(true),
		Destructive:     BoolPtr(false),
	}}}
}

func (t *ToolSearchTool) Execute(_ context.Context, execCtx ExecutionContext, input any) (string, error) {
	in := deref[ToolSearchInput](input)
	registry, _ := execCtx["_registry"].(*ToolRegistry)
	if registry == nil {
		return "<tool_use_error>\nTool registry not available in context.\n</tool_use_error>", nil
	}
	query := strings.TrimSpace(in.Query)
	if strings.HasPrefix(query, "select:") {
		return handleToolSearchSelect(query, registry), nil
	}
	return handleToolSearchQuery(query, registry), nil
}

func handleToolSearchSelect(query string, registry *ToolRegistry) string {
	rawNames := strings.Split(query[7:], ",")
	var names []string
	for _, name := range rawNames {
		if trimmed := strings.TrimSpace(name); trimmed != "" {
			names = append(names, trimmed)
		}
	}
	if len(names) == 0 {
		return "No tool names specified. Use 'select:Name1,Name2' to load specific tools."
	}
	var lines, activated, notFound, alreadyActive []string