v0.6.1 — Latest MCP spec compatibility (2025-06-18)

What's new

structuredContent native parsing

When a new-spec MCP server (2025-06-18) returns structured output, mcptoon call now prefers it over text content automatically — no flags needed. Old-spec servers behave exactly as before.

--envelope flag

mcptoon call <server> <tool> --envelope returns the complete MCP tools/call result envelope as JSON: structuredContent, _meta, resultType, isError, content all intact. Works with --auto routing too.

Library API

• MCPClient.call_tool_full() — envelope-level access from Python
• MCPClientPool.call_full() — same, via the connection pool

Compatibility matrix

New-spec feature	mcptoon support
structuredContent (structured tool output)	parsed natively
_meta / resultType protocol fields	--envelope passthrough
New-SDK servers (@modelcontextprotocol/server-*)	zero config
Old-spec servers	full backward compatibility

Quality: 548 tests passing (+8), zero third-party dependencies, ruff clean.

Docs: README (EN + zh-CN) now carries a prominent MCP-spec badge and a full compatibility matrix.