PureBasic 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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IncludeFile "CkJsonObject.pb"
IncludeFile "CkMcp.pb"

Procedure ChilkatExample()

    success.i = 0

    mcp.i = CkMcp::ckCreate()
    If mcp.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ;  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 = CkMcp::ckConnect(mcp,"https://learn.microsoft.com/api/mcp")
    If success = 0
        Debug CkMcp::ckLastErrorText(mcp)
        CkMcp::ckDispose(mcp)
        ProcedureReturn
    EndIf

    ;  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.i = CkJsonObject::ckCreate()
    If json.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkMcp::ckListResources(mcp,json)
    If success = 0
        Debug CkMcp::ckLastErrorText(mcp)
        CkMcp::ckDispose(mcp)
        CkJsonObject::ckDispose(json)
        ProcedureReturn
    EndIf

    CkJsonObject::setCkEmitCompact(json, 0)
    Debug CkJsonObject::ckEmit(json)
    ;  JSON parsing code for this result can be generated at Chilkat's online tool:
    ;  https://tools.chilkat.io/jsonParse


    CkMcp::ckDispose(mcp)
    CkJsonObject::ckDispose(json)


    ProcedureReturn
EndProcedure