Transports changedspecification/2025-06-18/basic/transports

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11# Transports

3<div id="enable-section-numbers" />

53MCP uses JSON-RPC to encode messages. JSON-RPC messages **MUST** be UTF-8 encoded.

75The protocol currently defines two standard transport mechanisms for client-server

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4745

4846## Streamable HTTP

4947

50<Info>

51 This replaces the [HTTP+SSE

52 transport](/specification/2024-11-05/basic/transports#http-with-sse) from

53 protocol version 2024-11-05. See the [backwards compatibility](#backwards-compatibility)

54 guide below.

55</Info>

48> [!NOTE]

49>

50> This replaces the [HTTP+SSE

51> transport](/specification/2024-11-05/basic/transports#http-with-sse) from

52> protocol version 2024-11-05. See the [backwards compatibility](#backwards-compatibility)

53> guide below.

5654

5755In the **Streamable HTTP** transport, the server operates as an independent process that

5856can handle multiple client connections. This transport uses HTTP POST and GET requests.