Claude Code syncs your claude.ai skills and plugins into the terminal
v2.1.275 ends the copy-paste; a same-day v2.1.276 unbreaks proxy setups; and the API adds on-demand compaction to cap tokens on long agent runs.
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Your claude.ai skills follow you to the CLI
Claude Code 2.1.275 automatically syncs the skills and plugins from your claude.ai account into terminal sessions — no more manually copying them across. Opt out per machine with `syncClaudeAiSkills: false` or `syncClaudeAiPlugins: false` if you'd rather keep the two environments separate.
Upgrade now if you route through a gateway
2.1.275 also shipped a regression: requests fail with `400 … Input tag 'advisor_20260301'` whenever `ANTHROPIC_BASE_URL` points at a proxy or LLM gateway. Same-day patch 2.1.276 clears it — if you're behind a corporate gateway or LiteLLM, skip straight to .276.
Two smaller wins: marketplace installs and send-now
`/plugin install <plugin> --marketplace <source>` now pulls a plugin from a specific marketplace in one command. And a new send-now key (Ctrl+Enter, or Ctrl+X Ctrl+S) interrupts the current turn to fire off whatever you've queued instead of waiting the turn out.
The API can compact a conversation on demand
The Messages API's new `compact-2026-09-04` beta header lets you compact a chat when you choose: send a `compaction` parameter, get back a signed summary block, and swap it in for the older turns on your next request. Recent turns stay word-for-word and thinking blocks stay valid — a clean way to cap token cost on long agent runs.