Actions: modelcontextprotocol/python-sdk
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2,500+ workflow runs
TransportSecuritySettings.allowed_hosts=[] (default) silently rejects external Host headers with HTTP 421
Claude Code
#2638:
Issue comment #2688 (comment)
created
by
Asti1982
ClientSessionGroup attempts to use capabilities that were not advertised
Claude Code
#2633:
Issue comment #2689 (comment)
created
by
norika1207-lab
Origin header → rejected with 403 by spec-compliant servers (e.g. go-sdk CrossOriginProtection)
Claude Code
#2627:
Issue comment #2727 (comment)
created
by
norika1207-lab
stdio_client hangs indefinitely on session initialization
Claude Code
#2622:
Issue comment #1452 (comment)
created
by
yyzquwu
ClientSessionGroup if streamable_http MCP server is not available
Claude Code
#2619:
Issue comment #915 (comment)
created
by
m13v
ClientSessionGroup if streamable_http MCP server is not available
Claude Code
#2617:
Issue comment #915 (comment)
created
by
mcp-claude
Bot
A | B | C union syntax
Claude Code
#2616:
Issue comment #2591 (comment)
created
by
mcp-claude
Bot