| name | twicc-whoami |
| description | Return the details of the session that owns the calling process. Use to discover your own TwiCC session_id from inside a Bash tool, to reference your own session. |
TwiCC Whoami
Identify the TwiCC session you are running in. Returns a JSON object with session_id, title, project_id, project_directory, current_working_directory (resolved from tool_use activity — may differ from project_directory when working in a worktree or another repo), artifacts_dir and scratch_dir (the session's own working directories, already joined with the session id), orchestration_scratch_dir (the shared scratch folder, present only when the session is part of an orchestration tree), the resolved agent_settings, the full session payload (same shape as $TWICC session <ID>), and the matching process row. Exits 1 if not running inside a TwiCC agent.
When to use
- You need your own
session_id and don't already have it in context.
How to invoke
Prefer the mcp__twicc__* tools when you have them. Inside a TwiCC session your tool list may include mcp__twicc__* tools — one per command below (the command with / and - turned into _, e.g. mcp__twicc__create_session, mcp__twicc__update_session_settings). When present, use them instead of the $TWICC CLI: same arguments, same JSON result, no shell, and your session identity travels with the call so self/parent resolve on their own. Fall back to the $TWICC CLI below when those tools aren't available (outside a session, or when scripting from a terminal).
TwiCC's executable varies by launch mode (uvx, dev, installed tool). ALWAYS USE THIS TO RESOLVE $TWICC AT THE START OF EACH BASH INVOCATION:
TWICC=${TWICC_BIN:-$(command -v twicc 2>/dev/null)}
[ -n "$TWICC" ] || { echo "TwiCC executable not found in this context" >&2; exit 1; }
Then run $TWICC <args> — never quote $TWICC (use $TWICC args, never "$TWICC" args): it may expand to multiple words, which quoting would break.
Usage
$TWICC whoami
Self-aware shortcuts
Commands that accept self resolve the calling session on their own. On $TWICC sessions, $TWICC processes, and $TWICC search use --spawned-by self (direct children), --descendants self (every descendant, you excluded), or --spawn-tree self (the whole spawn tree that contains you — any session id in the tree resolves to the same tree). --spawned-by and --descendants also accept parent (the session that spawned the current one): --spawned-by parent surfaces your siblings (yourself included), and --descendants parent surfaces your siblings + their subtrees + your own subtree. Use $TWICC topology self when you need the surrounding spawned-session tree.
Exit codes
0 — Session resolved.1 — No session found in PID ancestry.
Examples
MY_SESSION_ID=$($TWICC whoami | jq -r .session_id)
MY_MODEL=$($TWICC whoami | jq -r .agent_settings.selected_model)
MY_PID=$($TWICC whoami | jq -r .process.pid)
MY_ARTIFACTS_DIR=$($TWICC whoami | jq -r .artifacts_dir)
MY_SCRATCH_DIR=$($TWICC whoami | jq -r .scratch_dir)
Related commands
$TWICC sessions --spawned-by <self|parent> / --descendants <self|parent> / --spawn-tree self — children/siblings, every descendant (self/parent excluded), or the full spawn tree. Skill: twicc-sessions.$TWICC processes --spawned-by <self|parent> / --descendants <self|parent> / --spawn-tree self — same for live process listings. Skill: twicc-processes.$TWICC search '<query>' --spawned-by <self|parent> / --descendants <self|parent> / --spawn-tree self — same for full-text search. Skill: twicc-search.$TWICC topology self — map the spawned-session tree around you. Skill: twicc-topology.
