What
Skill frontmatter can now use the token preset:default in its allowed-tools list to include the full default tool set alongside any custom additions.
Usage
---
allowed-tools: preset:default, Bash(make test)
---Details
- When
preset:defaultis present, Claude expands it to the full list of default tools and then appends any additional entries in the list - This makes it easy to write skills that extend — rather than replace — the default tool set
Evidence
New expansion logic (search for "preset:default")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.