# McpTransportMode

> Tracon documentation. Tracon is a .NET package family that adds a control
> plane on Microsoft Agent Framework, published as NuGet packages that run
> inside your own ASP.NET Core application.
>
> Page: https://tracon.dev/api/tracon.mcptransportmode/
> Summary: McpTransportMode: The way a connection to an MCP server is made.

<div class="api-provenance">Namespace Tracon · Assembly <code>Tracon.Abstractions.dll</code></div>

The way a connection to an MCP server is made.

```csharp
[JsonConverter(typeof(JsonStringEnumConverter<McpTransportMode>))]
public enum McpTransportMode
```

## Fields

`Sse = 1` 

Server-sent events (SSE). For legacy servers.

`StreamableHttp = 0` 

Streamable HTTP. MCP's current remote transport.

## Remarks

**Stdio is deliberately absent.** The stdio transport starts a process on the server; this means anyone with access to the admin UI runs a program on the server, which fundamentally breaks the code-only tools rule. Tracon connects only to *remote* MCP servers.