20 pages for autocompact.

Beta Claude Developer Platform · in the page api/beta …`BetaCompactionBlock object` A compaction block returned when autocompact is triggered. When content is None, it indicates the compaction failed to produce a valid summary (e.g.,… Messages Claude Developer Platform · in the page api/beta/messages …`BetaCompactionBlock object` A compaction block returned when autocompact is triggered. When content is None, it indicates the compaction failed to produce a valid summary (e.g.,… Batches Claude Developer Platform · in the page api/beta/messages/batches …CompactionBlock object` A compaction block returned when autocompact is triggered. When content is None, it indicates the compaction failed to produce a valid sum… Retrieve Message Batch results Claude Developer Platform · in the page api/beta/messages/batches/results …CompactionBlock object` A compaction block returned when autocompact is triggered. When content is None, it indicates the compaction failed to produce a valid sum… Create a Message Claude Developer Platform · in the page api/beta/messages/create …`BetaCompactionBlock object` A compaction block returned when autocompact is triggered. When content is None, it indicates the compaction failed to produce a valid summary (e.g.,… Agent SDK reference - TypeScript Claude Code CLI · in the page agent-sdk/typescript …: string; source: string; tokens: number; }[]; }; autoCompactThreshold?: number; isAutoCompactEnabled: boolean; messageBreakdown?: { toolCallTokens: number; toolResultT… Claude Code changelog Claude Code CLI · in the page changelog …ged or `--settings` `effortLevel`, or a per-model level * Changed `/autocompact`'s footer hint to name ←/→, the keys that adjust other ordered values * Changed `/fast`'s footer to name Space as th… Use Claude Code in the cloud Claude Code CLI · in the page claude-code-on-the-web …n the context window approaches capacity. Cloud sessions set [`CLAUDE_AUTOCOMPACT_PCT_OVERRIDE`](/docs/en/env-vars) themselves, so compaction triggers partway through the [auto-compact window](/docs/e… CLI reference Claude Code CLI · in the page cli-reference …/extra-rules.txt` | | `--autocompact <auto\|tokens>` | Set the [auto-compact window](/docs/en/model-config#set-the-auto-compact-window) fo… Configure cloud environments Claude Code CLI · in the page cloud-environments …session also sets some variables itself when it starts. For [`CLAUDE_AUTOCOMPACT_PCT_OVERRIDE`](/docs/en/claude-code-on-the-web#manage-context), the value the session sets overrides one you add here,… Commands Claude Code CLI · in the page commands …| | `/autocompact [auto\|<tokens>]` | Set the auto-compact… Explore the context window Claude Code CLI · in the page context-window …ion keeps and how to guide the summary. * **Compact earlier**: run [`/autocompact`](/docs/en/commands#all-commands) with a token count, like `/autocompact 500k`, to set how full the context window get… Environment variables Claude Code CLI · in the page env-vars …| | `CLAUDE_AUTOCOMPACT_PCT_OVERRIDE` | Set the percentage (1-100) of the auto-compact window at which auto-compaction t… Model configuration Claude Code CLI · in the page model-config …window in three places: * **For this session and later ones**: run `/autocompact` with a value, like `/autocompact 500k`. Claude Code saves it to your user settings as [`autoCompactWindow`](/docs/en/… Continue local sessions from any device with Remote Control Claude Code CLI · in the page remote-control …eractive CLI, so the command tells you to run it there instead. * `/autocompact`, from v2.1.221: pass the window size as an argument, for example `/autocompact 500k`. With no argument, it prints the… Claude Code settings Claude Code CLI · in the page settings …| | `autoCompactEnabled` | **Default**: `true`. Automatically compact the conversation when context approaches the limit.… All settings Claude Code CLI · in the page settings-reference …| Git and attribution | Any file | | [`autoCompactEnabled`](#autocompactenabled) | Turn [automatic compaction](… Create custom subagents Claude Code CLI · in the page sub-agents …versation. Compaction triggers under the same conditions, and `CLAUDE_AUTOCOMPACT_PCT_OVERRIDE` applies to subagents as well. See [environment variables](/docs/en/env-vars) for when the override takes… Troubleshooting Claude Code CLI · in the page troubleshooting …dered. ### Auto-compaction stops with a thrashing error If you see `Autocompact is thrashing: the context refilled to the limit...`, automatic compaction succeeded but a file or tool output immediat… Week 17 · April 20–24, 2026 Claude Code CLI · in the page whats-new/2026-w17 …ndow, fixing inflated <code>/context</code> percentages and premature autocompaction</div> <div><code>/resume</code> on large sessions is up to 67% faster and now offers to summarize stale, large…