Source Intelligence
Follow Discord
Sweep 28 Aug 2026 · 16:06Z Build v2.1.251 479 read Stable v2.1.236 Latest v2.1.251 Next v2.1.251 Feeds RSS JSON llms.txt

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

Reference / Environment variables

CLAUDE_WORKSHOP_PROGRESS

A Claude Code environment variable, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.

What it is

Streaming now feeds tool and partial-input events to the workshop progress display.

Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.225.

Presence across releases

The miner has never read a build containing this name. It is here because a changelog entry of ours names it, which is evidence that it existed and not evidence of which releases carried it. The inventory starts at v2.1.138 and everything older than that was never mined.

Changelog entries naming it

  1. v2.1.225Workshop authoring-progress hooks fire during streaming

    Streaming now feeds tool and partial-input events to the workshop progress display.

    named in this entry

  2. v2.1.225Live "authoring progress" spinner text while Claude writes a workshop page

    The spinner can narrate what Claude is drafting on a workshop page, like "drawing figure 3".

    named in this entry

Documentation pages

None of Anthropic's documentation pages this site has a copy of carries this name.

Names beside it

Every environment variable in the inventory starting claude, up to twelve of them.

CLAUDE_AFK_COUNTDOWN_MSHow many milliseconds before auto-continue the on-screen countdown appears on an unanswered [AskUserQuestion](/docs/en/tools-reference) dialog. Default 20000 (20 seconds), capped at the auto-continue timeout. Has no effect unless auto-continue is on; see the [askUserQuestionTimeout](/docs/en/settings-reference#askuserquestiontimeout) setting and CLAUDE_AFK_TIMEOUT_MS. Requires Claude Code v2.1.198 or later 2.1.198 CLAUDE_AFK_TIMEOUT_MSHow many milliseconds of idle time before an unanswered [AskUserQuestion](/docs/en/tools-reference) dialog auto-continues without you. Auto-continue is off by default; opt in with the [askUserQuestionTimeout](/docs/en/settings-reference#askuserquestiontimeout) setting. This variable is an override for demos and automated tests: when set, it takes precedence over that setting and turns auto-continue on even when the setting is unset or never. Setting 0 doesn't turn the timeout off; it closes the dialog immediately. In v2.1.198 and v2.1.199, auto-continue was on by default with a 60000 (60 seconds) timeout. Requires Claude Code v2.1.198 or later 2.1.198 CLAUDE_AFTER_LAST_COMPACTNo description from anybody. 2.1.138 CLAUDE_AGENT_SDK_CLIENT_APPNo description from anybody. 2.1.138 CLAUDE_AGENT_SDK_DISABLE_BUILTIN_AGENTSSet to 1 to disable all built-in [subagent](/docs/en/sub-agents) types such as Explore and Plan. Only applies in non-interactive mode (the -p flag). Useful for SDK users who want a blank slate. This also removes general-purpose, the subagent Claude Code runs when an Agent tool call omits subagent_type. Such a call then fails with [subagent_type is required](/docs/en/errors#subagent-type-is-required) 2.1.138 CLAUDE_AGENT_SDK_MCP_NO_PREFIXSet to 1 to skip the mcp__<server>__ prefix on tool names from SDK-created MCP servers. Tools use their original names. SDK usage only 2.1.138 CLAUDE_AGENT_SDK_VERSIONYour entrypoint and SDK version are checked against known values before being reported. 2.1.138 CLAUDE_AGENTS_SELECTNo description from anybody. 2.1.138 CLAUDE_AI_ORIGINThe remote trigger tool can create webhook triggers so routines fire on outside events. never mined CLAUDE_ASYNC_AGENT_STALL_TIMEOUT_MSStall timeout in milliseconds for background subagents. Default 600000 (10 minutes). The timer resets on each streaming progress event; if no progress arrives within the window, the subagent is aborted and the task is marked failed, surfacing any partial result to the parent 2.1.138 CLAUDE_AUTO_BACKGROUND_TASKSSet to 1 to force-enable automatic backgrounding of long-running agent tasks. When enabled, subagents are moved to the background after running for approximately two minutes. Also enables [automatic backgrounding of long MCP tool calls](/docs/en/mcp#automatic-backgrounding-of-long-tool-calls) in non-interactive mode on Claude Code v2.1.212 or later 2.1.138 CLAUDE_AUTOCOMPACT_PCT_OVERRIDESet the percentage (1-100) of the auto-compact window at which auto-compaction triggers. Use lower values like 50 to compact earlier; the variable can't raise the threshold, so values above the default percentage are ignored. It applies only in sessions that [compact before the model's context limit](/docs/en/model-config#context-window-and-auto-compaction). Applies to both main conversations and subagents 2.1.138

Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the environment variable does. All environment variables.