Get a Prompt from an MCP Server

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Demonstrates Mcp.GetPrompt, which calls the MCP prompts/get method for a named prompt, passing a JSON arguments object and receiving the prompt result.

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

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

#  Build the prompt's arguments (pass an empty object for a prompt that takes no arguments).  The
#  prompt name and its arguments come from the "prompts" array returned by ListPrompts.
args = Chilkat::CkJsonObject.new()
args.UpdateString("topic","azure-storage")

#  Call the MCP prompts/get method for the named prompt.  The prompt result is placed in the
#  JsonObject.
json = Chilkat::CkJsonObject.new()
success = mcp.GetPrompt("example-prompt",args,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