Objective-C Requires Chilkat v11.6.0+

List the Prompts Offered by an MCP Server

Demonstrates Mcp.ListPrompts, which calls the MCP prompts/list method and places the server's result (a prompts 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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Objective-C

#import <CkoMcp.h>
#import <CkoJsonObject.h>

BOOL success = NO;

CkoMcp *mcp = [[CkoMcp alloc] init];

//  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 == NO) {
    NSLog(@"%@",mcp.LastErrorText);
    return;
}

//  Call the MCP prompts/list method.  On success, the server's result object -- containing a
//  "prompts" array -- is placed in the JsonObject.  Not all servers expose prompts.
CkoJsonObject *json = [[CkoJsonObject alloc] init];
success = [mcp ListPrompts: json];
if (success == NO) {
    NSLog(@"%@",mcp.LastErrorText);
    return;
}

json.EmitCompact = NO;
NSLog(@"%@",[json Emit]);
//  JSON parsing code for this result can be generated at Chilkat's online tool:
//  https://tools.chilkat.io/jsonParse