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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial
HomeDocsClaude Code CLI 17 Aug 2026
One change · claude-code

Extend Claude Code changedfeatures-overview

Nearest release: v2.1.234, published 4 hours before this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Recorded here
Lines+13added
Lines−11removed
From line 209 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits20to this page, all time

The whole hunk

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209209 
210210Each feature has a different loading strategy and context cost:
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212| Feature | When it loads | What loads | Context cost |
213| --------------------- | ------------------------------ | --------------------------------------------------- | -------------------------------------------- |
214| **CLAUDE.md** | Session start | Full content | Every request |
215| **Skills** | Session start + when used | Descriptions at start, full content when used | Low (descriptions every request)\* |
216| **MCP servers** | Session start | Tool names; full schemas on demand | Low until a tool is used |
217| **Code intelligence** | After file edits and on demand | Diagnostics after edits; symbol locations on lookup | Low; reduces file reads elsewhere |
218| **Subagents** | When spawned | Fresh context with specified skills | Isolated from main session |
219| **Hooks** | On trigger | Nothing (runs externally) | Zero, unless hook returns additional context |
212| Feature | When it loads | What loads | Context cost |
213| --------------------- | ------------------------------ | -------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------- |
214| **CLAUDE.md** | Session start | Full content | Every request |
215| **Skills** | Session start + when used | Descriptions at start, full content when used | Low (descriptions every request)\* |
216| **MCP servers** | Session start | Tool names; full schemas on demand | Low until a tool is used |
217| **Code intelligence** | After file edits and on demand | Diagnostics after edits; symbol locations on lookup | Low; reduces file reads elsewhere |
218| **Subagents** | When spawned | Fresh context with specified skills, or the parent conversation for a [fork](/docs/en/sub-agents#fork-the-current-conversation) | Isolated from main session |
219| **Hooks** | On trigger | Nothing (runs externally) | Zero, unless hook returns additional context |
220220 
221\*By default, skill descriptions load at session start so Claude can decide when to use them. Set `disable-model-invocation: true` in a skill's frontmatter to hide it from Claude entirely until you invoke it manually. This reduces context cost to zero for skills you only trigger yourself. For a skill you didn't write, set [`skillOverrides`](/docs/en/skills#override-skill-visibility-from-settings) in settings to do the same without editing its file.
221\*By default, skill descriptions load at session start so Claude can decide when to use them. Set `disable-model-invocation: true` in a skill's frontmatter to hide it from Claude entirely until you invoke it manually. For a skill you didn't write, set [`skillOverrides`](/docs/en/skills#override-skill-visibility-from-settings) in settings to do the same without editing its file.
222222 
223223### Understand how features load
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from line 285
285285 * CLAUDE.md and git status, except the built-in Explore and Plan agents [omit both](/docs/en/sub-agents#what-loads-at-startup)
286286 * Whatever context the lead agent passes in the prompt
287287 
288 **Context cost:** Isolated from main session. Subagents don't inherit your conversation history or invoked skills.
288 For a [fork](/docs/en/sub-agents#fork-the-current-conversation), Claude Code loads the parent's conversation so far, system prompt, and tools instead.
289 
290 **Context cost:** Isolated from main session.
289291 
290292 <Tip>Use subagents for work that doesn't need your full conversation context. Their isolation prevents bloating your main session.</Tip>
291293 </Tab>
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