Sweep 19 Sep 2026 · 02:36Z Build v2.1.278 500 read Stable v2.1.267 Latest v2.1.278 Next v2.1.278 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.252 ·

New scratchpad directory announced to the model

A new scratchpad directory location can now be announced to Claude alongside platform and shell info.

TierNothing to try yethow much it should matter to you
Useful2my rating, 1 to 5
Signal3worth watching, 1 to 5
AreaScratchpadwhat it touches
KindIn Developmentin v2.1.252,
Group of 2 Nothing to try yet Notable

A new scratchpad directory location can now be announced to Claude alongside platform and shell info.

A new scratchpadDirectory field is added to the environment-context schema alongside workingDirectory, platform, and shell. When present, the system prompt gets a line: 'Scratchpad directory: — always use it for temporary files... instead of /tmp', and it also appears in the initial environment info block. The directory is computed as <tmpdir>/<sessionId>/scratchpad.

Context-change messages sent to the model support a scratchpadDirectory case for announcing the location, and a removal case telling the model 'The scratchpad directory announced earlier is no longer available; use it no further.'

See this entry in the whole of v2.1.252 →