Read a Resource from an MCP Server

See more MCP Client Examples

Demonstrates Mcp.ReadResource, which calls the MCP resources/read method for a resource identified by URI and places the contents into a JsonObject.

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

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

    const mcp = try chilkat.Mcp.init();
    defer mcp.deinit();

    // 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.
    mcp.connect("https://learn.microsoft.com/api/mcp") catch {
        std.debug.print("{s}\n", .{try mcp.getLastErrorText(alloc)});
        return;
    };

    // Read a specific resource by its URI.  A resource URI is obtained from the "resources" array
    // returned by ListResources.  The resource contents are placed in the JsonObject.
    const json = try chilkat.JsonObject.init();
    defer json.deinit();
    mcp.readResource("file:///example/resource.txt", json) catch {
        std.debug.print("{s}\n", .{try mcp.getLastErrorText(alloc)});
        return;
    };

    json.setEmitCompact(false);
    std.debug.print("{s}\n", .{try json.emit(alloc)});
    // JSON parsing code for this result can be generated at Chilkat's online tool:
    // https://tools.chilkat.io/jsonParse
}