cowritten

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

Releases whose published page names cowritten.

1. v2.1.280 22 Sep 2026
   Single-page artifact response now includes version/co-authoring metadata

   Single-page artifact responses now include version, co-authoring, and type-locked info

   found in this entry's text

2. v2.1.273 15 Sep 2026
   Artifact publish gains an 'outside writer' role alongside 'cowritten'

   Artifacts gain a new 'outside writer' role separate from 'cowritten'

   found in this entry's text

3. v2.1.273 15 Sep 2026
   Artifact metadata gains an outsideWriter flag

   Artifact metadata now includes an outsideWriter flag and an outsideOrg flag alongside existing ownership fields

   found in this entry's text

4. v2.1.273 15 Sep 2026
   New 'outside_writer' / outsideWriter attribution field across artifact schemas

   New 'outside_writer' field marks artifact and asset content as authored by someone outside the org

   found in this entry's text

5. v2.1.269 11 Sep 2026
   Artifacts can now be marked 'authored by others'

   Artifacts can now be flagged as 'authored by others' when Claude isn't their sole author

   found in this entry's text

6. v2.1.269 11 Sep 2026
   Artifact tool responses gain a foreign ownership flag

   Artifact verify, list_files, and read_file now flag results as 'foreign' when they belong to another workshop or session

   found in this entry's text

7. v2.1.269 11 Sep 2026
   'foreign' flag added to synced content/asset schemas

   Synced content now carries a new 'foreign' flag alongside cowritten/typeLocked metadata

   found in this entry's text

8. v2.1.267 9 Sep 2026
   Artifact write_db permission prompts now describe file provenance and version-pinned edits to others' artifacts

   Permission prompts for writing to artifacts now explain whose file it is and flag version-pinned edits

   found in this entry's text

9. v2.1.265 8 Sep 2026
   writerClass added to cowritten-artifact metadata

   Cowritten artifact metadata now includes a writerClass derived from the user's permission role

   found in this entry's text

10. v2.1.260 3 Sep 2026
    New asset schema fields hint at cross-artifact asset copying

    New schema fields hint at cross-artifact asset copying, but nothing uses them yet.

    found in this entry's text

11. v2.1.260 3 Sep 2026
    Artifact list/read results can report 'cowritten' status

    Artifact reads can now report when content was collaboratively written.

    named in this entry

12. v2.1.260 3 Sep 2026
    Artifacts tool results flag co-writer / type-published content as untrusted

    Artifact tool results now flag co-writer or type-published content as untrusted data.

    named in this entry, found in this entry's text

13. v2.1.239 21 Aug 2026
    Artifacts can be marked as co-written

    Artifacts can now be stamped as co-written with an optional title, with no switch you can flip.

    found in this entry's text

No release's published evidence quotes this name. The ledger indexes the Evidence lines of every changelog on this site, so this says nobody here has ever quoted it; it says nothing about how old the name is.

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.

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 settings key does. All settings keys.