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ac1608e71f
The working tree had replaced the operating contract in AGENTS.md with a niri config-reload + keybinding-constraints note. Content relocated to its proper home: tips.md 3-config-reload (SIGHUP footgun, load-config-file) and key-bindings-syntax.md constraints section. AGENTS.md restored from HEAD.
67 lines
2.1 KiB
Markdown
67 lines
2.1 KiB
Markdown
---
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type: reference
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title: Niri Key Bindings Syntax
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description: Configuration syntax for niri key bindings — KDL format, modifiers, bind options, and finding key names with wev.
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tags:
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- niri
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- keybindings
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- kdl
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- configuration
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verified: 2026-08-28
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---
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# Key Bindings Syntax
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Key bindings go in the `binds {}` section of the config file (`~/.config/niri/config.kdl`):
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```kdl
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binds {
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Mod+T { spawn "alacritty"; }
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Mod+Left { focus-column-left; }
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}
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```
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## Modifiers
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- `Ctrl` or `Control`
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- `Shift`
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- `Alt`
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- `Super` or `Win`
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- `ISO_Level3_Shift` or `Mod5` (AltGr)
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- `ISO_Level5_Shift` (for lv5 options like `lv5:caps_switch`)
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- `Mod` — Special: equals `Super` on TTY, equals `Alt` in nested window
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## Bind Options
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```kdl
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binds {
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Mod+T repeat=false { spawn "alacritty"; } // Do not repeat on hold
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Mod+T cooldown-ms=500 { spawn "alacritty"; } // Rate-limit
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Super+Alt+L allow-when-locked=true { spawn "swaylock"; } // Works when locked
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Mod+Q hotkey-overlay-title="Close Window" { close-window; } // Custom title in overlay
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Mod+Escape allow-inhibiting=false { ... } // Always works (even with inhibitors)
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}
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```
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## Finding Key Names
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Use [`wev`](https://git.sr.ht/~sircmpwn/wev) to find XKB key names:
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```bash
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wev
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# Then press the key you want to bind — look at `sym: XXXX` in output
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```
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Shifted keys require Shift + the unshifted key (for example, `Mod+Shift+Comma` for `<` on US QWERTY).
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## Constraints
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- One action per keybind. Each `{ ... }` block holds exactly one action; multiple actions like `{ move-window-up; consume-or-expel-window-up; }` are rejected at parse time.
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- No duplicate keys. The same key combo (e.g. `Mod+CTRL+Left`) can only appear once in `binds {}`. Adding a new binding for an existing key causes a parse error.
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- Valid consume/expel actions: `consume-or-expel-window-left`, `consume-or-expel-window-right`, and `expel-window-from-column`. The `consume-or-expel-window-up`/`-down` variants do NOT exist.
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## Related
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* [Default Key Bindings](/tools/niri/default-bindings.md) — What niri ships with out of the box
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* [Action Reference](/tools/niri/action-reference.md) — All available actions
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