How It Works¶

mise-completions-sync follows a simple process to generate shell completions:

Discover installed tools - Gets list of installed tools via mise ls --installed --json (or optional flags --global, --local, --current)
Look up registry entries - Each tool is matched against the built-in registry
Generate completions - Runs the tool's completion command (e.g., kubectl completion zsh)
Save output - Writes completions to ~/.local/share/mise-completions/<shell>/

Registry¶

The registry (registry.toml) maps each tool to the command that prints its completion script. Most tools share a handful of conventions, so those live in [patterns], where {} stands in for the tool name:

[patterns]
standard = { zsh = "{} completion zsh", bash = "{} completion bash", fish = "{} completion fish" }

[tools]
kubectl = "standard"

A tool whose command doesn't fit a pattern spells it out per shell. Omitting a shell means the tool doesn't support it:

[tools]
npm = { zsh = "npm completion", bash = "npm completion" }

Three optional fields cover tools that need more than a command:

requires names another mise tool that must be on PATH while generating, for tools that shell out to a helper. fnox renders through usage:

fnox = { requires = "usage", zsh = "fnox completion zsh" }

provided_by marks a binary that arrives as part of another mise tool rather than being one itself, like uvx from uv. Its completions are generated whenever the provider is installed.
bundled means the tool has no completion command and ships the files in its download instead. Each shell's value is then the filename to look for:

hyperfine = { bundled = true, zsh = "_hyperfine", bash = "hyperfine.bash", fish = "hyperfine.fish" }

The file is searched for by name beneath mise where <tool>, because the directory holding it encodes the version and platform (hyperfine-v1.20.0-x86_64-apple-darwin/autocomplete) and cannot be written down in advance. The shallowest match wins.

Commands run inside mise x <tool> -- …, so they resolve against the version mise has installed rather than whatever is on your PATH. A bundled entry runs nothing — its file is copied straight out of the install directory.

Custom Registry¶

The built-in registry is embedded in the binary, but you can extend it. If a registry.toml exists next to the executable, or at $XDG_DATA_HOME/mise-completions-sync/registry.toml, it is laid on top of the built-in one rather than replacing it.

schema_version = 1

[tools]
# a tool the built-in registry doesn't know about
graphite-cli = { zsh = "gt completion zsh", bash = "gt completion bash" }

# built-in patterns are available to your entries
mytool = "standard"

# and you can override a built-in entry
yq = { zsh = "yq shell-completion zsh" }

Merging happens before patterns are resolved, so your entries can use the built-in patterns, and redefining a pattern reaches every tool that references it. schema_version is required. Entries can be added or overridden; there is no way to remove a built-in entry.

The executable's directory takes precedence over the XDG location, and only one user registry applies.

Output Locations¶

By default, completions are saved to $XDG_DATA_HOME/mise-completions/<shell>.

Each tool gets its own completion file named _<tool> (for zsh) or <tool>.bash/<tool>.fish for other shells.

You can override the default output directory using the MISE_COMPLETIONS_SYNC_HOME environment variable:

export MISE_COMPLETIONS_SYNC_HOME="$XDG_DATA_HOME/custom-vendor-completions"

misecompsync kubectl
#  [fish] -> ~/.local/share/custom-vendor-completions/fish/kubectl.fish
#  [zsh]  -> ~/.local/share/custom-vendor-completions/zsh/_kubectl
#  [bash] -> ~/.local/share/custom-vendor-completions/bash/kubectl

Or you can override output directories for one (or more) shells (e.g., MISE_COMPLETIONS_SYNC_{SHELL}_DIR)

export MISE_COMPLETIONS_SYNC_FISH_DIR="$XDG_CONFIG_HOME/fish/completions"

misecompsync kubectl
#  [fish] -> ~/.config/fish/completions/kubectl.fish
#  [zsh]  -> ~/.local/share/mise-completions/zsh/_kubectl
#  [bash] -> ~/.local/share/mise-completions/bash/kubectl

Or a shell dir with base dir default (shell takes precedence):

export MISE_COMPLETIONS_SYNC_HOME="$XDG_DATA_HOME/custom-vendor-completions"
export MISE_COMPLETIONS_SYNC_ZSH_DIR="$XDG_DATA_HOME/zsh/site-functions"

misecompsync kubectl
#  [fish] -> ~/.local/share/custom-vendor-completions/fish/kubectl.fish
#  [zsh]  -> ~/.local/share/zsh/site-functions/_kubectl
#  [bash] -> ~/.local/share/custom-vendor-completions/bash/kubectl

Note: Target directories will be created if they don't already exist.