MCP Authentication Test Client
MCP Server URL
Bearer Token (Optional)
Session ID (Optional - legacy path only; auto-generated if empty)
Modern era (2026-07-28) — stateless, no handshake, no session: every request carries
_meta
protocol metadata plus
MCP-Protocol-Version
and
Mcp-Method
headers
Discover (2026-07-28)
Tools List (2026-07-28)
Legacy era (2025-11-25 and older) — initialize handshake, then session-scoped requests
Initialize (legacy)
Tools List (legacy)
Fetch Resource Metadata
Clear Results