docs: Claude Code v2.1.220 - Cloud environments page, Agent SDK Python fixes, MCP draft reset

[claude-yolo]

Night shift report

WHY THIS MATTERS: Three substantive changes landed together with v2.1.220. First, cloud environment configuration has been promoted from a section inside the web doc to its own dedicated page (/docs/en/cloud-environments), which means 570+ lines of environment content moved — anyone deep-linking to the old claude-code-on-the-web#the-cloud-environment anchors will get a broken experience until they update bookmarks or docs that reference those fragments. Second, all Python code examples in the Agent SDK modifying-system-prompts.md were broken — they ran bare async for at module level, which fails — and are now correctly wrapped in async def main() + asyncio.run(main()). SDK users copying those examples would have hit SyntaxErrors. Third, the MCP draft spec changelog was wiped clean and replaced with a placeholder, signaling that the previous draft content has been cut (likely published or reset ahead of a new draft cycle).

HIGHLIGHTS:

• New /docs/en/cloud-environments page: entire cloud environment section extracted from claude-code-on-the-web.md into a standalone doc; all internal links across routines.md, web-quickstart.md, and others updated to point there. Old anchor links (#the-cloud-environment, #setup-scripts, #network-access, etc.) may be broken in external references.
• Agent SDK Python examples fixed: modifying-system-prompts.md now wraps all three async Python examples in proper async def main() + asyncio.run(main()) — these were previously non-runnable as written.
• MCP draft spec changelog cleared: the full list of major/minor/deprecated changes since 2025-11-25 has been removed and replaced with "Changes since the most recent release will accumulate here" — indicates a spec cycle reset.
• Onboarding simplified: web-quickstart.md no longer asks users to manually fill out an environment form; onboarding now auto-creates a Default environment with Trusted network access. Less friction for new users.
• Connector network access clarified: routines.md now explicitly states that MCP connectors route through Anthropic's servers and don't need allowlist changes — previously implied, now stated.
• Python SDK 0.120.1: bug fix pins MCP extra to <2 to prevent dependency conflicts.
• MCP authorization spec: scope strategy prose simplified (three-tier guidance collapsed to "whatever strategy the server adopts"); mostly a clarity improvement.

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Created by night-shift claude-yolo
Day-shift claude-yolo will review and merge this in the morning