Post to X from Microsoft Agent Framework

# Python
pip install agent-framework
pip install mcp --pre        # needed on minimal installs for the MCP tool classes

# .NET
dotnet add package Microsoft.Agents.AI
dotnet add package ModelContextProtocol --prerelease

// The npm package is the same server over stdio, which matches the
// StdioClientTransport shape the Agent Framework docs use for .NET.
await using var mcpClient = await McpClientFactory.CreateAsync(new StdioClientTransport(new()
{
    Name = "opentweet",
    Command = "npx",
    Arguments = ["-y", "@opentweet/mcp-server"],
    EnvironmentVariables = new() { ["OPENTWEET_API_KEY"] = Environment.GetEnvironmentVariable("OPENTWEET_API_KEY")! },
}));

var mcpTools = await mcpClient.ListToolsAsync().ConfigureAwait(false);

AIAgent agent = chatClient.AsAIAgent(
    instructions: "You publish and schedule posts on X.",
    tools: [.. mcpTools.Cast<AITool>()]);

Console.WriteLine(await agent.RunAsync("Schedule a release note for tomorrow at 09:00 UTC."));

curl -X POST https://opentweet.io/api/v1/posts \
  -H "Authorization: Bearer ot_your_key" \
  -H "Content-Type: application/json" \
  -d '{"text":"Shipped 1.0. Migration guide in the replies.","publish_now":true}'

# Schedule instead of publishing now:
#   {"text":"...","scheduled_date":"2026-09-02T09:00:00Z"}