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omp-docs/tools/niri/key-bindings-syntax.md

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+---
+type: reference
+title: Niri Key Bindings Syntax
+description: Configuration syntax for niri key bindings — KDL format, modifiers, bind options, and finding key names with wev.
+tags:
+  - niri
+  - keybindings
+  - kdl
+  - configuration
+verified: 2026-08-28
+---
+
+# Key Bindings Syntax
+
+Key bindings go in the `binds {}` section of the config file (`~/.config/niri/config.kdl`):
+
+```kdl
+binds {
+    Mod+T { spawn "alacritty"; }
+    Mod+Left { focus-column-left; }
+}
+```
+
+## Modifiers
+
+- `Ctrl` or `Control`
+- `Shift`
+- `Alt`
+- `Super` or `Win`
+- `ISO_Level3_Shift` or `Mod5` (AltGr)
+- `ISO_Level5_Shift` (for lv5 options like `lv5:caps_switch`)
+- `Mod` — Special: equals `Super` on TTY, equals `Alt` in nested window
+
+## Bind Options
+
+```kdl
+binds {
+    Mod+T repeat=false { spawn "alacritty"; }     // Do not repeat on hold
+    Mod+T cooldown-ms=500 { spawn "alacritty"; }  // Rate-limit
+    Super+Alt+L allow-when-locked=true { spawn "swaylock"; }  // Works when locked
+    Mod+Q hotkey-overlay-title="Close Window" { close-window; }  // Custom title in overlay
+    Mod+Escape allow-inhibiting=false { ... }     // Always works (even with inhibitors)
+}
+```
+
+## Finding Key Names
+
+Use [`wev`](https://git.sr.ht/~sircmpwn/wev) to find XKB key names:
+
+```bash
+wev
+# Then press the key you want to bind — look at `sym: XXXX` in output
+```
+
+Shifted keys require Shift + the unshifted key (for example, `Mod+Shift+Comma` for `<` on US QWERTY).
+
+## Related
+
+* [Default Key Bindings](/tools/niri/default-bindings.md) — What niri ships with out of the box
+* [Action Reference](/tools/niri/action-reference.md) — All available actions