# mcp.caller.CallerIdentity.is_malformed

- **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#L145
- **Page:** https://libtmux.org/en/rs/latest/mcp/reference/mcp-caller-calleridentity-is_malformed/

```
mcp.caller.CallerIdentity.is_malformed(self) -> bool
```

Whether the variables were set but do not describe one tmux pane.

Pane-input and teardown tools refuse every call while this holds,
because they cannot rule out reaching the caller's own pane.