a plugin said what its chats should know through promptPrefix, which rides
every message. three costs, and the owner hit all of them: paid per turn
forever, invisible as a design artefact because it lives in a typescript
constant, and visible in the one place it should not be — he sent three words
and watched a paragraph of preamble go out attached to them.
so the platform now copies plugins/<name>/chat/CLAUDE.md into the chats
directory whenever a chat starts there, and claude code reads it from its own
cwd at session start. same words, no per-turn cost, and a file the person it is
about can open and edit.
COPIED, which looks like it contradicts docs/plugin-capabilities.md. it does
not: that rule is about files the PLATFORM reads, where a copy goes stale and
survives an uninstall. this one is read by claude code from a cwd, so it has to
exist there — no indirection changes where that program looks. the staleness is
answered by rewriting on every resolve rather than once at install, so the file
is always this version of the plugin's and plugins:update needs no republish
step. skipped when the content already matches, so mtimes do not churn.
best effort: no brief is the ordinary case, and a chat that cannot be given one
still runs.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Officer-Session: 656f5c85-e49a-4f1f-b9f3-042a04b4d043
pastilhasandClaude Opus 5
8a12d5094b