SQL Server 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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SQL Server

--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

    DECLARE @mcp int
    EXEC @hr = sp_OACreate 'Chilkat.Mcp', @mcp OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    --  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.
    EXEC sp_OAMethod @mcp, 'Connect', @success OUT, 'https://learn.microsoft.com/api/mcp'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @mcp, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @mcp
        RETURN
      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.
    DECLARE @json int
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @json OUT

    EXEC sp_OAMethod @mcp, 'ListResources', @success OUT, @json
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @mcp, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @mcp
        EXEC @hr = sp_OADestroy @json
        RETURN
      END

    EXEC sp_OASetProperty @json, 'EmitCompact', 0
    EXEC sp_OAMethod @json, 'Emit', @sTmp0 OUT
    PRINT @sTmp0
    --  JSON parsing code for this result can be generated at Chilkat's online tool:
    --  https://tools.chilkat.io/jsonParse

    EXEC @hr = sp_OADestroy @mcp
    EXEC @hr = sp_OADestroy @json


END
GO