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Fix resources/templates/list handling
- Add handle_resource_templates_list function for the resources/templates/list method
- Add resourceTemplates capability to the server
- Update server capabilities with resourceTemplates option
This fixes the 'Method not found: resources/templates/list' error when running the MCP server.
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+12
lib/mcp_sdk.ml
+12
lib/mcp_sdk.ml
···
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else
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caps
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in
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let caps =
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if with_resource_templates then
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("resourceTemplates", `Assoc [
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("listChanged", `Bool true)
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]) :: caps
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else if not with_resource_templates then
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("resourceTemplates", `Assoc [
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("listChanged", `Bool false)
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]) :: caps
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else
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caps
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in
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let caps =
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if with_prompts then
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("prompts", `Assoc [
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lib/mcp_server.ml
+8
lib/mcp_server.ml
···
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let response = Mcp_rpc.ResourcesList.create_response ~id:req.id ~resources:resources_list () in
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Some response
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(* Process resources/templates/list request *)
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let handle_resource_templates_list server (req:JSONRPCMessage.request) =
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Log.debug "Processing resources/templates/list request";
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let templates_list = ResourceTemplate.to_rpc_resource_templates_list (resource_templates server) in
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let response = Mcp_rpc.ListResourceTemplatesResult.create_response ~id:req.id ~resource_templates:templates_list () in
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Some response
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(* Utility module for resource template matching *)
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module Resource_matcher = struct
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(* Define variants for resource handling result *)
···
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| Method.PromptsList -> handle_prompts_list server req
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| Method.ResourcesList -> handle_resources_list server req
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| Method.ResourcesRead -> handle_resources_read server req
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| Method.ResourceTemplatesList -> handle_resource_templates_list server req
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| _ ->
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Log.errorf "Unknown method received: %s" (Method.to_string req.meth);
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Some (create_jsonrpc_error req.id ErrorCode.MethodNotFound ("Method not found: " ^ (Method.to_string req.meth)) ()))