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Align with spec #3002: optional clientInfo, serverInfo in result _meta (#3143)

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Max 2026-07-23 12:00:36 +01:00 • committed by GitHub
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8
tests/server/test_stdio.py
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@ -11,6 +11,7 @@ from mcp_types import (
CLIENT_CAPABILITIES_META_KEY,
CLIENT_INFO_META_KEY,
PROTOCOL_VERSION_META_KEY,
SERVER_INFO_META_KEY,
JSONRPCMessage,
JSONRPCRequest,
JSONRPCResponse,
@ -264,11 +265,14 @@ def test_mcpserver_run_stdio_serves_a_modern_connection(monkeypatch: pytest.Monk
discover = JSONRPCRequest(jsonrpc="2.0", id=1, method="server/discover", params={"_meta": envelope})
tools = JSONRPCRequest(jsonrpc="2.0", id=2, method="tools/list", params={"_meta": envelope})
responses = _serve_stdio_and_collect(monkeypatch, MCPServer(name="ModernStdioServer"), [discover, tools], 2)
server = MCPServer(name="ModernStdioServer", version="1.2.3")
responses = _serve_stdio_and_collect(monkeypatch, server, [discover, tools], 2)
assert isinstance(responses[0], JSONRPCResponse) and responses[0].id == 1
assert "2026-07-28" in responses[0].result["supportedVersions"]
assert responses[0].result["serverInfo"]["name"] == "ModernStdioServer"
# Server identity travels as the result `_meta` stamp, not a DiscoverResult
# body field (spec 2026-07-28, #3002).
assert responses[0].result["_meta"][SERVER_INFO_META_KEY] == {"name": "ModernStdioServer", "version": "1.2.3"}
assert isinstance(responses[1], JSONRPCResponse) and responses[1].id == 2
# `resultType` is the modern-only wire field: its presence proves the
# request was served at the discovered version, not the handshake era.