ForMCPRequest returns a Registry optimized for a specific MCP request. This is designed for servers that create a new instance per request (like the remote server), allowing them to only register the items needed for that specific request rather than all ~90 tools. Parameters: - method: The MCP met
(method string, itemName string)
| 100 | // |
| 101 | // All existing filters (read-only, toolsets, etc.) still apply to the returned items. |
| 102 | func (r *Inventory) ForMCPRequest(method string, itemName string) *Inventory { |
| 103 | // Create a shallow copy with shared filter settings |
| 104 | // Note: lazy-init maps (toolsByName, etc.) are NOT copied - the new Registry |
| 105 | // will initialize its own maps on first use if needed |
| 106 | result := &Inventory{ |
| 107 | tools: r.tools, |
| 108 | resourceTemplates: r.resourceTemplates, |
| 109 | prompts: r.prompts, |
| 110 | deprecatedAliases: r.deprecatedAliases, |
| 111 | readOnly: r.readOnly, |
| 112 | enabledToolsets: r.enabledToolsets, // shared, not modified |
| 113 | additionalTools: r.additionalTools, // shared, not modified |
| 114 | featureChecker: r.featureChecker, |
| 115 | filters: r.filters, // shared, not modified |
| 116 | unrecognizedToolsets: r.unrecognizedToolsets, |
| 117 | } |
| 118 | |
| 119 | // Helper to clear all item types |
| 120 | clearAll := func() { |
| 121 | result.tools = []ServerTool{} |
| 122 | result.resourceTemplates = []ServerResourceTemplate{} |
| 123 | result.prompts = []ServerPrompt{} |
| 124 | } |
| 125 | |
| 126 | switch method { |
| 127 | case MCPMethodInitialize: |
| 128 | clearAll() |
| 129 | case MCPMethodToolsList: |
| 130 | result.resourceTemplates, result.prompts = nil, nil |
| 131 | case MCPMethodToolsCall: |
| 132 | result.resourceTemplates, result.prompts = nil, nil |
| 133 | if itemName != "" { |
| 134 | result.tools = r.filterToolsByName(itemName) |
| 135 | } |
| 136 | case MCPMethodResourcesList, MCPMethodResourcesTemplatesList: |
| 137 | result.tools, result.prompts = nil, nil |
| 138 | case MCPMethodResourcesRead: |
| 139 | // Keep all resources registered - SDK handles URI template matching internally |
| 140 | result.tools, result.prompts = nil, nil |
| 141 | case MCPMethodPromptsList: |
| 142 | result.tools, result.resourceTemplates = nil, nil |
| 143 | case MCPMethodPromptsGet: |
| 144 | result.tools, result.resourceTemplates = nil, nil |
| 145 | if itemName != "" { |
| 146 | result.prompts = r.filterPromptsByName(itemName) |
| 147 | } |
| 148 | default: |
| 149 | clearAll() |
| 150 | } |
| 151 | |
| 152 | return result |
| 153 | } |
| 154 | |
| 155 | // ToolsetIDs returns a sorted list of unique toolset IDs from all tools in this group. |
| 156 | func (r *Inventory) ToolsetIDs() []ToolsetID { |