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Sweep 28 Aug 2026 ยท 00:00Z Build v2.1.250 478 read Stable v2.1.236 Latest v2.1.250 Next v2.1.250 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

Every name Claude Code reads.

Not the names we happened to write about. The names that are actually in the build, read out of the shipped bundle release by release. Eight kinds of them, 3,168 in all.

1,313 of them have no description from anybody: not a line in Anthropic's documentation, and not a changelog entry of ours that names them. They are in the build and nobody has ever said what they do.

The inventory below was last read out of v2.1.243. A name marked as gone was in an earlier build and is not in that one.

The eight families

1,145 environment variables Environment variables Names the client reads out of the environment it was started in, to turn something on, off or somewhere else. 215 CLI flags CLI flags Arguments the claude command accepts, including the ones no help text mentions. 1,188 feature flags Feature flags GrowthBook gates the client evaluates on startup. Most of what ships is behind one of these before it is announced. 431 settings keys Settings keys Keys the client reads out of a settings.json, at whichever of the four scopes it finds one. 106 slash commands Slash commands Commands typed at the prompt, the built-in ones the bundle carries. 33 tools Tools The tools the model is given, by the name it calls them with. 31 hook events Hook events The points in a session a configured hook can be run at. 19 models Models Model identifiers the client knows about, including the aliases it resolves.

A family reading not read yet is one whose miner has not landed. The name is real, the route is real, and the list fills in on the release after the inventory learns to read it.