Ruby Requires Chilkat v11.6.0+

List the Resources Offered by an MCP Server

Demonstrates Mcp.ListResources, which calls the MCP resources/list method and places the server's result (a resources array) into a JsonObject.

Tip: Code to parse the returned JSON can be generated with Chilkat's online tool at https://tools.chilkat.io/jsonParse.

Background. The Model Context Protocol (MCP) lets a client interact with a server's tools, resources, and prompts over a standard JSON-RPC interface. This example connects to the public, no-authentication Microsoft Learn MCP server at https://learn.microsoft.com/api/mcp over Streamable HTTP.

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Ruby

require 'chilkat'

success = false

mcp = Chilkat::CkMcp.new()

#  Connect to a public MCP (Model Context Protocol) server over its Streamable HTTP endpoint.  The
#  Microsoft Learn MCP server is public and requires no authentication.
success = mcp.Connect("https://learn.microsoft.com/api/mcp")
if (success == false)
    print mcp.lastErrorText() + "\n";
    exit
end

#  Call the MCP resources/list method.  On success, the server's result object -- containing a
#  "resources" array -- is placed in the JsonObject.  Not all servers expose resources.
json = Chilkat::CkJsonObject.new()
success = mcp.ListResources(json)
if (success == false)
    print mcp.lastErrorText() + "\n";
    exit
end

json.put_EmitCompact(false)
print json.emit() + "\n";
#  JSON parsing code for this result can be generated at Chilkat's online tool:
#  https://tools.chilkat.io/jsonParse