C# Requires Chilkat v11.6.0+
C#
Get the Last JSON-RPC Response from an MCP Server
See more MCP Client Examples
Demonstrates Mcp.GetLastJsonData, which returns the complete JSON-RPC response envelope (the jsonrpc, id, and result members) from the most recent request 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. This exposes the full protocol-level response for inspection or debugging after any MCP request.
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bool success = false;
Chilkat.Mcp mcp = new Chilkat.Mcp();
// 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) {
Debug.WriteLine(mcp.LastErrorText);
return;
}
// Perform an MCP request.
Chilkat.JsonObject toolsResult = new Chilkat.JsonObject();
success = mcp.ListTools(toolsResult);
if (success == false) {
Debug.WriteLine(mcp.LastErrorText);
return;
}
// Get the complete JSON-RPC response envelope (the jsonrpc, id, and result members) from the most
// recent request.
Chilkat.JsonObject json = new Chilkat.JsonObject();
mcp.GetLastJsonData(json);
json.EmitCompact = false;
Debug.WriteLine(json.Emit());
// JSON parsing code for this result can be generated at Chilkat's online tool:
// https://tools.chilkat.io/jsonParse