multicc-sync
Two Claude accounts on one Mac, one session list. Sign out of the Claude desktop app
and into another account and every Claude Code session disappears from the sidebar.
Nothing was deleted: transcripts live in ~/.claude/projects and are shared, but the
app keeps a separate list of sessions per account. mccsync makes both accounts list
the same sessions, and keeps them in step afterwards: renames, archives and deletions
made in one account carry over to the other.
It never touches transcripts, never reads tokens, and makes no network calls. Every write is preceded by a backup.
Install
uv tool install multicc-sync
Python 3.11 or newer. For the MCP server as well, install multicc-sync[mcp].
Use
Quit the Claude app, then:
mccsync
That is the whole update. The first run takes the union of both accounts; later runs carry across whatever changed on either side since the previous run, and say so entry by entry.
mccsync -n # show the plan, write nothing
mccsync list # every account and what it lists
mccsync find "case study" # locate a session in any account, with its transcript path
mccsync adopt # list terminal-only sessions in the app (experimental)
mccsync restore # put back the last backup
mccsync --help lists the rest, including --keep-deleted and --accounts A,B for
machines with more than two accounts.
For agents, mccsync-mcp is a stdio MCP server with four tools: find_sessions,
list_accounts, sync_sessions and terminal_only_sessions. Register it in Claude
Code with claude mcp add multicc-sync -- mccsync-mcp. The repository carries a
matching skill in skills/session-sync.
The app's session index is not a documented interface. This tool was written against
Claude desktop 1.49585.0 on macOS and checks the directory layout before every run;
if the app changes it, mccsync stops rather than guesses. Windows and Linux paths
are present but untested.
MIT license.
1 maintainer
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