go-sdk/mcp/mcp.go
Rob Findley a590cfe063 internal/mcp: rename StdIO->Stdio
In CL 682976, Alan Donovan correctly points out that the term in the MCP
spec is 'stdio', and therefore the correct capitalization is Stdio.

Change-Id: Ib5bbe04f1a61de886298b4d0adc13aefd6aadd9c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/683075
Reviewed-by: Alan Donovan <adonovan@google.com>
Auto-Submit: Robert Findley <rfindley@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2025-06-20 13:34:58 -07:00

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2.2 KiB
Go

// Copyright 2025 The Go MCP SDK Authors. All rights reserved.
// Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file.
//go:generate go run generate.go
//go:generate ./internal/readme/build.sh
// The mcp package provides an SDK for writing model context protocol clients
// and servers.
//
// To get started, create either a [Client] or [Server], and connect it to a
// peer using a [Transport]. The diagram below illustrates how this works:
//
// Client Server
// ⇅ (jsonrpc2) ⇅
// ClientSession ⇄ Client Transport ⇄ Server Transport ⇄ ServerSession
//
// A [Client] is an MCP client, which can be configured with various client
// capabilities. Clients may be connected to a [Server] instance
// using the [Client.Connect] method.
//
// Similarly, a [Server] is an MCP server, which can be configured with various
// server capabilities. Servers may be connected to one or more [Client]
// instances using the [Server.Connect] method, which creates a
// [ServerSession].
//
// A [Transport] connects a bidirectional [Connection] of jsonrpc2 messages. In
// practice, transports in the MCP spec are are either client transports or
// server transports. For example, the [StdioTransport] is a server transport
// that communicates over stdin/stdout, and its counterpart is a
// [CommandTransport] that communicates with a subprocess over its
// stdin/stdout.
//
// Some transports may hide more complicated details, such as an
// [SSEClientTransport], which reads messages via server-sent events on a
// hanging GET request, and writes them to a POST endpoint. Users of this SDK
// may define their own custom Transports by implementing the [Transport]
// interface.
//
// # TODO
//
// - Support all content types.
// - Support pagination.
// - Support completion.
// - Support oauth.
// - Support all client/server operations.
// - Pass the client connection in the context.
// - Support streamable HTTP transport.
// - Support multiple versions of the spec.
// - Implement full JSON schema support, with both client-side and
// server-side validation.
package mcp