# mcp.caller.CallerIdentity.pane_id

- **Module:** mcp.caller.CallerIdentity
- **Package:** tmux-mcp
- **Language:** Rust
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-rs/blob/f0e37052c232636b61d095817046e6bfc8f2ca40/crates/tmux-mcp/src/caller.rs#L151
- **Page:** https://libtmux.org/en/rs/latest/mcp/reference/mcp-caller-calleridentity-pane_id/

```
mcp.caller.CallerIdentity.pane_id(self) -> Option<&str>
```

The pane this process runs in, when tmux named one.