| name | 1password |
| description | Set up and use 1Password CLI (op). Use when installing the CLI, enabling desktop app integration, signing in (single or multi-account), or reading/injecting/running secrets via op. |
| homepage | https://developer.1password.com/docs/cli/get-started/ |
1Password CLI
Follow the official CLI get-started steps. Don't guess install commands.
Prerequisites
- tmux is required for reliable
op commands (the shell tool uses fresh TTYs per command, causing re-auth issues without tmux)
- macOS:
brew install tmux
- Linux (Debian/Ubuntu):
sudo apt install tmux
- Linux (RHEL/Fedora):
sudo dnf install tmux
References
references/get-started.md (install + app integration + sign-in flow)
references/cli-examples.md (real op examples)
Workflow
- Check OS + shell.
- Verify CLI present:
op --version.
- Confirm desktop app integration is enabled (per get-started) and the app is unlocked.
- REQUIRED: create a fresh tmux session for all
op commands (no direct op calls outside tmux).
- Sign in / authorize inside tmux:
op signin (expect app prompt).
- Verify access inside tmux:
op whoami (must succeed before any secret read).
- If multiple accounts: use
--account or OP_ACCOUNT.
REQUIRED tmux session
The shell tool uses a fresh TTY per command. To avoid re-prompts and failures, always run op inside a dedicated tmux session with a fresh socket and session name.
Socket conventions:
- Put sockets under
${LETTA_TMUX_SOCKET_DIR:-${TMPDIR:-/tmp}/letta-tmux-sockets} so they're isolated and easy to clean up.
- Use a timestamped session name (e.g.
op-auth-$(date +%Y%m%d-%H%M%S)) so you never reuse an old session — previous auth state may be stale or broken.
- Kill the session when you're done (
tmux -S "$SOCKET" kill-session -t "$SESSION") to avoid leaking long-running tmux processes.
Full example:
SOCKET_DIR="${LETTA_TMUX_SOCKET_DIR:-${TMPDIR:-/tmp}/letta-tmux-sockets}"
mkdir -p "$SOCKET_DIR"
SOCKET="$SOCKET_DIR/letta-op.sock"
SESSION="op-auth-$(date +%Y%m%d-%H%M%S)"
tmux -S "$SOCKET" new -d -s "$SESSION" -n shell
tmux -S "$SOCKET" send-keys -t "$SESSION":0.0 -- "op signin --account my.1password.com" Enter
tmux -S "$SOCKET" send-keys -t "$SESSION":0.0 -- "op whoami" Enter
tmux -S "$SOCKET" send-keys -t "$SESSION":0.0 -- "op vault list" Enter
tmux -S "$SOCKET" capture-pane -p -J -t "$SESSION":0.0 -S -200
tmux -S "$SOCKET" kill-session -t "$SESSION"
Guardrails
- Never paste secrets into logs, chat, or code.
- Prefer
op run / op inject over writing secrets to disk.
- If sign-in without app integration is needed, use
op account add.
- If a command returns "account is not signed in", re-run
op signin inside tmux and authorize in the app.
- Do not run
op outside tmux; stop and ask if tmux is unavailable.