Mise Comprehensive Skill

STRICT ENFORCEMENT: Usage Field Required
Overview
Task Definition Methods
Task Arguments - Usage Spec Reference
Task Configuration Reference
Running Tasks (CLI)
Task Dependencies and Caching
Dev Tools Management
Environment Configuration
Hooks and Watchers
Configuration and Settings
- File Hierarchy
- Key Settings Reference
Prepare Feature (Experimental)
Monorepo Tasks (Experimental)
Best Practices

STRICT ENFORCEMENT: Usage Field Required

This skill WILL NOT generate tasks with shell-native argument handling.

All task arguments MUST be defined using the usage field. This is non-negotiable.

REQUIRED Pattern

[tasks.deploy]
description = "Deploy to environment"
usage = 'arg "<env>" help="Target environment" choices "dev" "staging" "prod"'
run = 'deploy.sh ${usage_env?}'

#!/usr/bin/env bash
#MISE description="Process files"
#USAGE arg "<input>" help="Input file"
#USAGE arg "[output]" default="out.txt" help="Output file"
echo "Processing ${usage_input?} -> ${usage_output:-out.txt}"

BLOCKED Patterns

# BLOCKED: Bash positional arguments
[tasks.bad]
run = 'deploy.sh $1 $2'

# BLOCKED: Bash special variables
[tasks.also_bad]
run = 'process.sh "$@"'

# BLOCKED: Inline Tera templates (deprecated, removed 2026.11)
[tasks.deprecated]
run = 'echo {{arg(name="x")}}'

Why This is Enforced

Benefit	Description
Type Safety	Arguments validated before execution
Auto-completion	Shell completions generated automatically
Cross-platform	Works on bash, zsh, fish, PowerShell
Self-documenting	`mise run --help` shows all options
No Parsing Bugs	Eliminates shell quoting/escaping issues
Choices Validation	Invalid values rejected immediately

Overview

mise is an all-in-one developer environment tool that manages:

Dev tools - install and manage language runtimes, CLIs, and build tools (18 backends)
Tasks - project-specific commands with argument handling, dependencies, caching
Environments - manage env vars, profiles, dotenv files, secrets
Hooks - run commands on directory changes, project enter/leave, tool install

Key Features:

Parallel dependency building (concurrent by default)
Last-modified and content-hash checking (avoid unnecessary rebuilds)
File watching (mise watch rebuilds on changes)
Cross-platform argument handling via usage spec
Hierarchical configuration with profile support
18 tool backends (aqua, github, npm, cargo, pipx, go, etc.)

Task Definition Methods

TOML-Based Tasks (in mise.toml)

Simple Tasks

[tasks]
build = "cargo build"
test = "cargo test"
lint = "cargo clippy"

Detailed Tasks

[tasks.build]
description = "Build the CLI"
run = "cargo build"

[tasks.test]
description = "Run tests"
depends = ["build"]
run = "cargo test"

File-Based Tasks (executable scripts)

Place in mise-tasks/ or .mise/tasks/ directory. Files must be executable (chmod +x).

#!/usr/bin/env bash
#MISE description="Build the CLI"
#MISE depends=["lint"]
cargo build

Supported directories:

mise-tasks/
.mise-tasks/
mise/tasks/
.mise/tasks/
.config/mise/tasks/

File tasks use #MISE or #USAGE comment headers for configuration.

Alternative header syntax (if formatters modify #MISE):

# [MISE] description="Build"
# [MISE] depends=["lint"]

Task Grouping (Namespaces)

Subdirectories create namespaced tasks:

mise-tasks/
├── test/
│   ├── unit          → test:unit
│   ├── integration   → test:integration
│   └── e2e           → test:e2e
└── lint/
    ├── eslint        → lint:eslint
    └── prettier      → lint:prettier

Remote Tasks

Fetch tasks from external sources:

[tasks.build]
file = "https://example.com/build.sh"

[tasks.release]
file = "git::https://github.com/org/repo.git//scripts/release.sh?ref=v1.0.0"

Remote files are cached in MISE_CACHE_DIR.

Task Arguments - Usage Spec Reference

REMINDER: Always use the usage field. Never use $1, $@, or shell-native argument handling.

The usage field uses KDL-inspired syntax to define arguments, flags, and completions.

Positional Arguments (`arg`)

Attribute	Type	Default	Description
(name)	string	required	`"<name>"` = required, `"[name]"` = optional. `"<file>"` triggers file completion, `"<dir>"` triggers dir completion.
`help`	string	none	Short help text shown with `-h`
`long_help`	string	none	Extended help text shown with `--help`
`default`	string	none	Default value if not provided. `default=""` sets to empty string (different from unset).
`env`	string	none	Environment variable that can provide this arg's value. Priority: CLI > env > default.
`var`	boolean	`#false`	Variadic mode (accept multiple values). `"<name>"` requires 1+, `"[name]"` accepts 0+.
`var_min`	integer	none	Minimum values when variadic
`var_max`	integer	none	Maximum values when variadic
`choices`	values	none	Restrict to enumerated set
`double_dash`	string	none	`"required"`, `"optional"`, `"automatic"`, `"preserve"`
`hide`	boolean	`#false`	Exclude from help output

Examples:

arg "<file>" help="Input file to process"
arg "[output]" default="out.txt" help="Output file"
arg "<files>" var=#true var_min=1 help="One or more files"
arg "<env>" choices "dev" "staging" "prod" help="Target environment"
arg "<args>..." double_dash="automatic" help="Pass-through arguments"

Variadic args in bash:

# Values are shell-escaped string in usage_files
eval "files=($usage_files)"
for f in "${files[@]}"; do
  echo "Processing: $f"
done

Flags (`flag`)

Attribute	Type	Default	Description
(definition)	string	required	`"-s --long"` (boolean) or `"-s --long <value>"` (with value). Short flag optional.
`help`	string	none	Short help text
`long_help`	string	none	Extended help for `--help`
`default`	string/bool	none	Default value. Boolean flags use `#true`/`#false`.
`env`	string	none	Environment variable backing the flag
`global`	boolean	`#false`	Available on all subcommands
`count`	boolean	`#false`	Value = number of times used (e.g., `-vvv` = 3)
`var`	boolean	`#false`	Flag repeatable, collecting values
`var_min`	integer	none	Min values when `var=#true`
`var_max`	integer	none	Max values when `var=#true`
`negate`	string	none	Negative form (e.g., `"--no-color"`). Sets env var to `false`.
`choices`	block	none	Restrict values to enumerated set
`hide`	boolean	`#false`	Exclude from docs/completions
`required_if`	string	none	Required if named flag is set
`required_unless`	string	none	Required unless named flag is present
`overrides`	string	none	If set, named flag's value is ignored

Examples:

flag "-v --verbose" help="Enable verbose output"
flag "-f --force" help="Skip confirmation prompts"
flag "--port <port>" default="8080" help="Server port"
flag "--color" negate="--no-color" default=#true help="Enable colors"
flag "-d --debug" count=#true help="Debug level (-ddd for max)"
flag "--include <pattern>" var=#true help="Include patterns (repeatable)"
flag "--shell <shell>" { choices "bash" "zsh" "fish" }
flag "--file <file>" required_if="--dir" help="Required if --dir is set"

Count flags: -vvv sets $usage_verbose to 3. Short flags chain: -abc = -a -b -c.

Negate flags: flag "--color" negate="--no-color" default=#true — --no-color sets $usage_color to false.

Custom Completions (`complete`)

Provide dynamic tab-completion for arguments. Preferred over choices when values change.

complete "<arg_name>" run="<shell command outputting one value per line>"

Key rules:

Must appear after the arg it applies to
Names must match exactly
Do not combine with choices on the same arg

Examples:

usage = '''
arg "<service>" help="Service name"
complete "service" run="ls -d infrastructure/*/application 2>/dev/null | sed 's|infrastructure/||;s|/application||'"
arg "<environment>" help="Target environment"
complete "environment" run="ls infrastructure/${usage_service}/application/env/ 2>/dev/null | sed 's/.tfvars//'"
'''

With descriptions:

complete "plugin" run="mise plugins ls" descriptions=#true

Output format: value:description per line.

choices vs complete:

Feature	`choices`	`complete`
Values	Hardcoded in spec	Dynamic from command
Validation	Rejects invalid input	Tab-completion only
Maintenance	Must edit to add options	Auto-discovers new options
Best for	Stable enums (yes/no, log levels)	File/directory-derived values

Accessing Arguments in Scripts

Environment variables (prefixed with usage_):

Definition	Environment Variable
`arg "<file>"`	`$usage_file`
`arg "[output]"`	`$usage_output`
`flag "-v --verbose"`	`$usage_verbose`
`flag "--dry-run"`	`$usage_dry_run`
`flag "-o --output <file>"`	`$usage_output`

Naming rules: usage_ prefix, hyphens to underscores, lowercase, long name used.

Bash variable expansion patterns:

Pattern	Use Case
`${var?}`	Required args - fail if missing
`${var:-default}`	Optional with fallback
`${var:?msg}`	Required with custom error
`${var:+value}`	Conditional (if set, use value)

Values by type:

Type	Present	Absent
Boolean flag	`"true"`	unset (or `"false"` with `default=#false`)
Count flag	`"1"`, `"2"`, etc.	`"0"`
Value flag/arg	the string value	unset or default
Variadic	shell-escaped space-separated	unset or empty

Critical distinction: default="" makes variable SET to empty string. No default + not provided = UNSET.

# Required arg - error if not provided
echo "Deploying to ${usage_environment?}"

# Optional with default
clean="${usage_clean:-false}"

# Conditional flag forwarding
docker build ${usage_verbose:+--verbose} .

# Boolean flag check
if [ -n "${usage_dry_run:-}" ]; then
  echo "Dry run mode"
fi

# Variadic to array
eval "files=($usage_files)"

File Task Headers

#!/usr/bin/env bash
#MISE description="Deploy application"
#USAGE arg "<environment>" help="Environment" {
#USAGE   choices "dev" "prod"
#USAGE }
#USAGE flag "-f --force" help="Skip confirmation"

echo "Deploying to ${usage_environment?}"

Supported shebangs: bash, node, python, deno, pwsh, fish, zsh.

Task Configuration Reference

All Task Fields

Core Execution

Field	Type	Default	Description
`run`	`string \| string[] \| object[]`	—	Command(s) to execute. Supports structured array (see below).
`run_windows`	same as `run`	—	Windows-specific override
`file`	`string`	—	External script path (local, HTTP, or Git URL)
`shell`	`string`	—	Interpreter (e.g., `"bash -c"`, `"node -e"`)
`usage`	`string`	—	Usage spec for arguments/flags

Metadata

Field	Type	Default	Description
`description`	`string`	—	Task help text
`alias`	`string \| string[]`	—	Alternative name(s)
`hide`	`bool`	`false`	Exclude from listings

Dependencies

Field	Type	Default	Description
`depends`	`string \| string[] \| object[]`	—	Tasks to run BEFORE (supports structured objects)
`depends_post`	`string \| string[] \| object[]`	—	Tasks to run AFTER
`wait_for`	`string \| string[] \| object[]`	—	Wait for tasks without adding as deps

Environment & Tools

Field	Type	Default	Description
`env`	`table`	—	Task-specific env vars (NOT passed to depends). Supports age-encrypted values.
`tools`	`table`	—	Tools to install before running

Execution Context

Field	Type	Default	Description
`dir`	`string`	`{{config_root}}`	Working directory. Use `{{cwd}}` for user's cwd.
`raw`	`bool`	`false`	Direct stdin/stdout connection (disables parallel execution)

Output Control

Field	Type	Default	Description
`quiet`	`bool`	`false`	Suppress mise output
`silent`	`bool \| "stdout" \| "stderr"`	`false`	Suppress all/specific output

Caching

Field	Type	Default	Description
`sources`	`string \| string[]`	—	Input files (glob patterns)
`outputs`	`string \| string[] \| {auto: true}`	—	Generated files. Use `{auto = true}` for implicit tracking.

Safety

Field	Type	Default	Description
`confirm`	`string`	—	Prompt before running. Supports Tera templates with `usage.*`.

Timeout & Inheritance

Field	Type	Default	Description
`timeout`	`string`	—	Max execution duration (e.g., `"30s"`, `"5m"`). Overrides global `task_timeout`.
`extends`	`string`	—	Template task to inherit configuration from.

Structured `run` Array

Mix inline scripts with task references, including parallel sub-task execution:

[tasks.pipeline]
run = [
  { task = "lint" },                 # run lint (with its dependencies)
  { tasks = ["test", "typecheck"] }, # run test and typecheck in parallel
  "echo 'All checks passed!'",      # then run a script
]

Structured `depends` with Args/Env

Pass arguments and environment variables to dependencies:

[tasks.deploy]
depends = [
  { task = "build", args = ["--release"], env = { RUSTFLAGS = "-C opt-level=3" } }
]
run = "./deploy.sh"

Env vars passed to dependencies are scoped to that dependency only.

Task Inheritance (`extends`)

A task can inherit configuration from another task:

[tasks._base_deploy]
hide = true
depends = ["build", "test"]
env = { DEPLOY_TIMESTAMP = "{{now()}}" }
tools = { node = "22" }

[tasks.deploy-staging]
extends = "_base_deploy"
env = { DEPLOY_ENV = "staging" }
run = "./scripts/deploy.sh staging"

[tasks.deploy-prod]
extends = "_base_deploy"
confirm = "Deploy to production?"
env = { DEPLOY_ENV = "production" }
run = "./scripts/deploy.sh production"

Global Task Configuration

[task_config] Section

[task_config]
dir = "{{cwd}}"  # Default working directory for all tasks
includes = [
  "tasks/*.toml",                              # Local task files
  ".mise/tasks/",                              # Task directory
  "git::https://github.com/org/tasks?ref=v1"  # Remote tasks
]

[vars] Section

Shared variables between tasks (NOT environment variables):

[vars]
project_name = "myapp"
version = "1.0.0"
registry = "ghcr.io/myorg"

[vars._.file]
path = "vars.toml"  # Load vars from external file

[tasks.build]
run = "echo Building {{vars.project_name}} v{{vars.version}}"

Vars are accessed via {{vars.key_name}} Tera templates. They are not passed as environment variables.

Global Task Settings

Setting	Type	Default	Description
`task_output`	string	`"prefix"`	Output mode: prefix, interleave, keep-order, replacing, timed, quiet, silent
`task_timeout`	string	none	Default timeout (e.g., `"30m"`)
`task_timings`	bool	`false`	Show elapsed time per task
`task_skip`	string[]	`[]`	Tasks to skip by default
`task_skip_depends`	bool	`false`	Skip dependencies
`task_run_auto_install`	bool	`true`	Auto-install missing tools
`task_show_full_cmd`	bool	`false`	Disable command truncation in output
`task_disable_paths`	string[]	`[]`	Paths to exclude from task discovery
`task_remote_no_cache`	bool	false	Always fetch latest remote tasks
`task.source_freshness_hash_contents`	bool	`false`	Use blake3 content hashing instead of mtime
`task.source_freshness_equal_mtime_is_fresh`	bool	`false`	Equal mtime = fresh
`jobs`	int	`8`	Max concurrent task execution

Running Tasks (CLI)

Commands

Command	Description
`mise run <task>` / `mise r <task>`	Execute task
`mise <task>`	Shorthand (if no command conflict)
`mise tasks` / `mise tasks ls`	List all tasks
`mise tasks --hidden`	Include hidden tasks
`mise tasks deps`	Show dependency tree
`mise tasks deps --dot`	DOT format for Graphviz
`mise tasks info <task>`	Show task details
`mise tasks add <name> -- <cmd>`	Create task via CLI
`mise watch <task>` / `mise w <task>`	Watch and re-run on file changes

Execution Flags

Flag	Description
`-j, --jobs N`	Parallel job limit (default: 4)
`-f, --force`	Ignore source/output caching
`-n, --dry-run`	Preview without executing
`-o, --output MODE`	prefix, interleave, keep-order, replacing, timed, quiet, silent
`-r, --raw`	Direct stdin/stdout/stderr
`-c, --continue-on-error`	Continue running tasks even if one fails
`-s, --shell SHELL`	Shell spec (default: `sh -c -o errexit -o pipefail`)
`-t, --tool TOOL@VERSION`	Additional tools beyond mise.toml
`--timings`	Show elapsed time per task
`--timeout DURATION`	Task timeout (e.g., `30s`, `5m`)
`--fresh-env`	Bypass environment cache
`--skip-deps`	Run only specified tasks, skip dependencies
`--no-cache`	Skip cache on remote tasks
`--no-prepare`	Skip automatic dependency preparation

Parallel Tasks and Wildcards

mise run test:*         # All test:* tasks
mise run lint:**        # All nested lint tasks
mise run {build,test}   # Multiple specific tasks
mise run lint ::: test ::: check  # Parallel task groups with :::
mise run cmd1 arg1 ::: cmd2 arg2 # Parallel with separate args

Default Task

[tasks.default]
depends = ["build", "test"]
run = "echo 'Ready!'"

Task Dependencies and Caching

Dependencies

[tasks.deploy]
depends = ["build", "test", "lint"]  # Run before (parallel by default)
depends_post = ["notify"]             # Run after
wait_for = ["db:migrate"]             # Wait if running, don't add

Caching with sources/outputs

[tasks.build]
sources = ["Cargo.toml", "src/**/*.rs"]
outputs = ["target/release/myapp"]
run = "cargo build --release"
# Skips if sources unchanged and outputs exist

Auto outputs:

[tasks.build]
sources = ["src/**/*.rs"]
outputs = { auto = true }  # Implicit tracking via task hash
run = "cargo build"

Redactions (Experimental)

Hide sensitive values from task output:

redactions = ["API_KEY", "PASSWORD", "SECRETS_*"]

Dev Tools Management

Backends Overview

mise supports 18 backend types. Recommended priority order:

Priority	Backend	Description
1	aqua	Most features, best security (cosign/SLSA/attestation). No plugins needed.
2	github	GitHub releases with auto OS/arch detection
3	gitlab	GitLab releases
4	forgejo	Forgejo/Codeberg releases
5	http	Direct HTTP/HTTPS downloads with URL templating
6	s3	S3/MinIO (experimental)
7	pipx	Python CLIs in isolated environments
8	npm	Node packages
9	go	Go packages (requires compilation)
10	cargo	Rust packages (requires compilation)
11	gem	Ruby gems
12	dotnet	.NET tools (experimental)
13	conda	Conda packages (experimental)
14	spm	Swift packages (experimental)
15	vfox	vfox plugins (cross-platform, Windows)
16	asdf	asdf plugins (legacy, no Windows)

TOML Syntax for Tools

[tools]
# Simple version
node = "22"
python = "3.12"
ruby = "latest"

# Multiple versions
python = ["3.12", "3.11"]

# With options
node = { version = "22", postinstall = "corepack enable" }
python = { version = "3.11", os = ["linux", "macos"] }
ripgrep = { version = "latest", os = ["linux", "macos"] }

# Explicit backend
"aqua:BurntSushi/ripgrep" = "latest"
"github:cli/cli" = "latest"
"npm:prettier" = "latest"
"pipx:psf/black" = "latest"
"cargo:eza" = "latest"
"go:github.com/DarthSim/hivemind" = "latest"

Version formats:

Format	Example	Description
Exact	`"20.0.0"`	Specific version
Prefix	`"20"`	Latest matching prefix
Latest	`"latest"`	Most recent stable
`ref:<SHA>`	`"ref:abc123"`	Compile from git ref
`path:<PATH>`	`"path:/opt/node"`	Use custom binary
`sub-<N>:<BASE>`	`"sub-1:latest"`	N versions behind base

Per-Tool Options

Every tool supports these options regardless of backend:

Option	Type	Description
`version`	string	Tool version
`os`	string[]	Restrict to OS: `"linux"`, `"macos"`, `"windows"`
`install_env`	table	Environment variables during installation
`postinstall`	string	Command after installation. `MISE_TOOL_INSTALL_PATH` available.

Backend-Specific Configuration

GitHub Backend Options

[tools."github:cli/cli"]
version = "latest"
asset_pattern = "gh_*_linux_x64.tar.gz"  # Match specific release asset
bin = "gh"                                 # Rename binary
filter_bins = "gh"                         # Only expose specific bins
no_app = true                              # Skip macOS .app bundles

HTTP Backend

[tools."http:my-tool"]
version = "1.0.0"
[tools."http:my-tool".platforms]
macos-x64 = { url = "https://example.com/tool-macos-x64.tar.gz", checksum = "sha256:..." }
linux-x64 = { url = "https://example.com/tool-linux-x64.tar.gz", checksum = "sha256:..." }

URL template variables: {{ version }}, {{ os() }}, {{ arch() }}, {{ os_family() }} OS/arch remapping: {{ os(macos="darwin") }}, {{ arch(x64="amd64") }}

Cargo Backend

[tools]
"cargo:eza" = "latest"
"cargo:cargo-edit" = { version = "latest", features = "add" }

Settings: cargo.binstall = true (use precompiled binaries, default), cargo.binstall_only = false.

Pipx Backend

[tools]
"pipx:black" = "latest"
"pipx:harlequin" = { version = "latest", extras = "postgres,s3" }
"pipx:ansible" = { version = "latest", uvx = false }  # Disable uv

Shims and Aliases

Shims location: ~/.local/share/mise/shims

# Shim mode (non-interactive shells)
eval "$(mise activate zsh --shims)"  # in ~/.zprofile

# PATH mode (interactive shells)
eval "$(mise activate zsh)"          # in ~/.zshrc

Best practice: Use both — shims in profile for non-interactive, PATH activation in rc for interactive.

Tool aliases (remap to different backend):

[tool_alias]
node = 'asdf:company/our-custom-node'

[tool_alias.node.versions]
lts = '22'

Shell aliases:

[shell_alias]
ll = "ls -la"
gs = "git status"

CLI Commands for Tools

mise use node@22            # Install + activate + write to mise.toml
mise use -g node@22         # Write to global config
mise install node@20        # Install without activation
mise install                # Install all configured tools
mise ls                     # List installed
mise ls-remote node         # List available versions
mise which node             # Show real binary path
mise x python@3.12 -- script.py  # Run with specific tool
mise reshim                 # Rebuild shims
mise registry               # List all available tools

Environment Configuration

Basic Variables

[env]
NODE_ENV = 'production'
DEBUG = 'app:*'
PORT = 3000

# Unset a variable
UNWANTED_VAR = false

mise set NODE_ENV=development   # Set via CLI
mise set                        # View all
mise unset NODE_ENV             # Remove
mise env                        # Export all
mise env --json                 # Export as JSON
mise env --dotenv               # Export as dotenv

Special Directives (`env._`)

`_.path` — Prepend to PATH

[env]
_.path = ["tools/bin", "{{config_root}}/scripts"]
_.path = { path = ["{{env.GEM_HOME}}/bin"], tools = true }  # Lazy eval

`_.file` — Load from .env/json/yaml files

[env]
_.file = '.env'
_.file = ['.env', '.env.local', '.env.{{env.MISE_ENV}}']
_.file = { path = ".secrets.yaml", redact = true }

`_.source` — Source shell scripts

[env]
_.source = "./setup-env.sh"
_.source = { path = "my/env.sh", tools = true }

Profiles (`MISE_ENV`)

Profiles enable environment-specific config files:

MISE_ENV=staging mise run deploy

This loads mise.staging.toml in addition to mise.toml. Config file order:

mise.toml (base)
mise.staging.toml (profile overlay)
mise.staging.local.toml (local overrides, gitignored)

Important: MISE_ENV cannot be set in mise.toml — it must be in .miserc.toml, an env var, or CLI flag because it determines which config files to load.

Required and Redacted Variables

[env]
# Required — error if not set
DATABASE_URL = { required = "Set postgres connection string" }

# Redacted — hidden from output
API_KEY = { value = "secret_key_here", redact = true }
redactions = ["*_TOKEN", "SECRET_*", "API_*"]

Templates (Tera)

mise.toml values support Tera templates:

[env]
PROJECT_DIR = "{{config_root}}"
LOG_FILE = "{{config_root}}/logs/{{now() | date(format='%Y-%m-%d')}}.log"
NODE_PATH = "{{env.npm_config_prefix}}/lib/node_modules"

Available template variables:

Variable	Description
`env.*`	Current environment variables
`config_root`	Directory containing mise.toml
`cwd`	Current working directory
`mise_bin`	Path to mise binary
`mise_pid`	Process ID
`xdg_cache_home`	XDG cache directory
`xdg_config_home`	XDG config directory
`xdg_data_home`	XDG data directory
`xdg_state_home`	XDG state directory

Key Tera functions:

Function	Description
`exec(command="cmd")`	Execute shell command, return stdout
`arch()`	System architecture
`os()`	Operating system
`os_family()`	OS family (unix/windows)
`num_cpus()`	CPU count
`now()`	Current datetime
`get_env(name, default)`	Get env var with fallback
`chomp(str)`	Remove trailing newline

Key Tera filters:

Filter	Description
`lower`, `upper`, `capitalize`	Case transforms
`trim`, `replace(from, to)`	String manipulation
`split(pat)`, `join(sep)`	Array operations
`basename`, `dirname`, `extname`	Path operations
`hash`, `hash_file`	SHA256/BLAKE3 hashing
`absolute`, `canonicalize`	Path resolution
`kebabcase`, `snakecase`, `uppercamelcase`	Case conversion

Shell-style variable expansion (requires env_shell_expand = true):

[settings]
env_shell_expand = true

[env]
LD_LIBRARY_PATH = "$MY_LIB:$LD_LIBRARY_PATH"

Hooks and Watchers

Hook Types

Hook	Trigger	Requires `mise activate`?
`cd`	Directory changes	Yes
`enter`	Enter a project (once)	Yes
`leave`	Leave a project (once)	Yes
`preinstall`	Before tool installation	No
`postinstall`	After tool installation	No

Syntax

[hooks]
cd = "echo 'changed directory'"
enter = "echo 'entered project'"
leave = "echo 'left project'"
preinstall = "echo 'about to install'"
postinstall = "echo 'installed'"

# Multiple hooks
enter = ["echo 'first'", "echo 'second'"]

# Shell hooks (execute in current shell context)
[hooks.enter]
shell = "bash"
script = "source completions.sh"

Watch Files

[[watch_files]]
patterns = ["src/**/*.rs"]
run = "cargo fmt"

Sets MISE_WATCH_FILES_MODIFIED env var. Requires watchexec.

Hook Environment Variables

All hooks receive: MISE_ORIGINAL_CWD, MISE_PROJECT_ROOT, MISE_PREVIOUS_DIR (cd hooks). Postinstall receives: MISE_INSTALLED_TOOLS (JSON array), MISE_TOOL_NAME, MISE_TOOL_VERSION, MISE_TOOL_INSTALL_PATH.

Configuration and Settings

File Hierarchy

Config files in precedence order (highest first):

mise.local.toml
mise.toml
mise/config.toml
.mise/config.toml
.config/mise.toml
.config/mise/config.toml
.config/mise/conf.d/*.toml (alphabetical)

Global: ~/.config/mise/config.toml System: /etc/mise/config.toml Legacy: .tool-versions (asdf-compatible)

mise searches upward from cwd to root (or MISE_CEILING_PATHS). Merge behavior:

Tools: Additive with overrides
Env vars: Additive with overrides
Tasks: Completely replaced per task name
Settings: Additive with overrides

Key Settings Reference

[settings]
# Execution
jobs = 8                    # Concurrent jobs
experimental = false        # Enable experimental features

# Task defaults
task_output = "prefix"      # prefix|interleave|keep-order|replacing|timed|quiet|silent
task_timeout = "10m"        # Default task timeout
task_timings = true         # Show elapsed time
task_skip = ["slow-task"]   # Tasks to skip
task_skip_depends = false   # Skip dependencies

# Environment
env_shell_expand = true     # Enable $VAR expansion
env_cache = false           # Cache computed environment
env_cache_ttl = "1h"        # Cache TTL

# Tool management
auto_install = true         # Auto-install missing tools
disable_backends = ["asdf"] # Disable backends
pin = false                 # Default --pin for mise use
lockfile = true             # Read/update lockfiles

# Security
paranoid = false            # Extra-secure behavior
gpg_verify = false          # Verify GPG signatures

# Performance
fetch_remote_versions_cache = "1h"  # Version cache
http_timeout = "30s"                # HTTP timeout

# Node-specific
[settings.node]
corepack = false            # Enable corepack
compile = false             # Compile from source

# Python-specific
[settings.python]
uv_venv_auto = false        # Auto-create venv with uv
compile = false             # Compile from source

# Aqua security
[settings.aqua]
cosign = true               # Verify Cosign signatures
slsa = true                 # Verify SLSA provenance

Minimum Version

min_version = '2024.11.1'                               # Hard (errors)
min_version = { soft = '2024.11.1' }                    # Soft (warns)
min_version = { hard = '2024.11.1', soft = '2024.9.0' } # Both

Automatic Environment Variables

Tasks automatically receive:

Variable	Description
`MISE_ORIGINAL_CWD`	Original working directory
`MISE_CONFIG_ROOT`	Directory containing mise.toml
`MISE_PROJECT_ROOT`	Project root directory
`MISE_TASK_NAME`	Current task name
`MISE_TASK_DIR`	Task script directory
`MISE_TASK_FILE`	Full path to task script

Prepare Feature (Experimental)

Ensures dependencies are installed before task execution.

export MISE_EXPERIMENTAL=1
mise prepare

[prepare.npm]
auto = true

[prepare.custom]
sources = ["schema/*.graphql"]
outputs = ["src/generated/"]
run = "npm run codegen"

Built-in providers: npm, yarn, pnpm, bun, go, pip, poetry, uv, bundler, composer.

Monorepo Tasks (Experimental)

# Root mise.toml
experimental_monorepo_root = true

Requires MISE_EXPERIMENTAL=1.

mise //projects/frontend:build    # Absolute path from root
mise :build                       # Task in current config_root
mise '//projects/frontend:*'      # All tasks in frontend
mise //...:test                   # Test task in all projects

Settings:

[settings.task]
monorepo_depth = 5
monorepo_exclude_dirs = ["dist", "node_modules"]
monorepo_respect_gitignore = true

Best Practices

DO

Always use usage field for task arguments
Use ${var?} for required args to fail early
Set description for discoverability
Use sources/outputs for cacheable tasks
Use depends for task ordering
Use confirm for destructive operations
Use choices for stable enums, complete for dynamic/filesystem-derived values
Group related tasks with namespaces (e.g., test:unit, test:e2e)
Use mise.local.toml for personal overrides (gitignored)
Prefer aqua backend for security (cosign/SLSA verification)
Use env._.file for dotenv loading instead of MISE_ENV_FILE
Redact sensitive values with redact = true
Use templates for dynamic values instead of hardcoding paths
Use extends to share config between similar tasks

DON'T

Use $1, $2, $@, $* for arguments
Use $args in PowerShell
Use inline {{arg(name="x")}} syntax (deprecated, removed 2026.11)
Forget to quote glob patterns in sources
Set env vars in env that deps need (they don't inherit — use structured depends with env)
Use raw = true unless interactive input needed
Set MISE_ENV in mise.toml (it determines which files to load)
Manually add executables to shims directory (mise reshim removes them)
Use MISE_RAW=1 without knowing it sets MISE_JOBS=1

Complete Task Example

[tasks.deploy]
description = "Deploy application to environment"
alias = "d"
depends = ["build", "test"]
usage = '''
arg "<env>" choices "dev" "staging" "prod" help="Target environment"
flag "-f --force" help="Skip confirmation"
flag "--dry-run" help="Preview only"
'''
env = { DEPLOY_TIMESTAMP = "{{now()}}" }
tools = { node = "22" }
sources = ["dist/**/*"]
timeout = "5m"
confirm = "Deploy to {{usage.env}}?"
run = '''
#!/usr/bin/env bash
set -euo pipefail

if [ -n "${usage_dry_run:-}" ]; then
  echo "DRY RUN: Would deploy to ${usage_env?}"
  exit 0
fi

./scripts/deploy.sh "${usage_env?}"
'''

Complete File Task Example

#!/usr/bin/env bash
#MISE description="Run database migrations"
#MISE alias="migrate"
#MISE depends=["db:check"]
#MISE tools={postgresql="16"}
#USAGE arg "<direction>" choices "up" "down" help="Migration direction"
#USAGE flag "-n --count <n>" default="1" help="Number of migrations"
#USAGE flag "--dry-run" help="Preview SQL only"

set -euo pipefail

direction="${usage_direction?}"
count="${usage_count:-1}"

if [ -n "${usage_dry_run:-}" ]; then
  echo "Would run $count migration(s) $direction"
  exit 0
fi

migrate "$direction" -n "$count"

Complete Dev Tools + Env Example

min_version = "2024.11.1"

[settings]
jobs = 8
task_output = "interleave"
task_timings = true
env_shell_expand = true

[tools]
node = "22"
python = { version = "3.12", postinstall = "pip install -r requirements.txt" }
"aqua:BurntSushi/ripgrep" = "latest"
"npm:prettier" = "latest"

[env]
NODE_ENV = "development"
DATABASE_URL = { required = "Set postgres connection string" }
API_KEY = { value = "{{env.API_KEY}}", redact = true }
_.path = ["./node_modules/.bin", "{{config_root}}/scripts"]
_.file = [".env", ".env.local"]

[hooks]
enter = "echo 'Welcome to {{vars.project_name}}'"

[vars]
project_name = "myapp"

[tasks.dev]
description = "Start development server"
depends = ["build"]
tools = { node = "22" }
run = "npm run dev"

[tasks.build]
description = "Build project"
sources = ["src/**/*.ts", "tsconfig.json"]
outputs = ["dist/**/*"]
run = "tsc --build"

[tasks.test]
description = "Run tests"
depends = ["build"]
run = "vitest run"

mise

Mise Comprehensive Skill

Table of Contents

STRICT ENFORCEMENT: Usage Field Required

REQUIRED Pattern

BLOCKED Patterns

Why This is Enforced

Overview

Task Definition Methods

TOML-Based Tasks (in mise.toml)

Simple Tasks

Detailed Tasks

File-Based Tasks (executable scripts)

Task Grouping (Namespaces)

Remote Tasks

Task Arguments - Usage Spec Reference

Positional Arguments (arg)

Flags (flag)

Custom Completions (complete)

Accessing Arguments in Scripts

File Task Headers

Task Configuration Reference

All Task Fields

Core Execution

Metadata

Dependencies

Environment & Tools

Execution Context

Output Control

Caching

Safety

Timeout & Inheritance

Structured run Array

Structured depends with Args/Env

Task Inheritance (extends)

Global Task Configuration

[task_config] Section

[vars] Section

Global Task Settings

Running Tasks (CLI)

Commands

Execution Flags

Parallel Tasks and Wildcards

Default Task

Task Dependencies and Caching

Dependencies

Caching with sources/outputs

Redactions (Experimental)

Dev Tools Management

Backends Overview

TOML Syntax for Tools

Per-Tool Options

Backend-Specific Configuration

GitHub Backend Options

HTTP Backend

Cargo Backend

Pipx Backend

Shims and Aliases

CLI Commands for Tools

Environment Configuration

Basic Variables

Special Directives (env._)

_.path — Prepend to PATH

_.file — Load from .env/json/yaml files

_.source — Source shell scripts

Profiles (MISE_ENV)

Required and Redacted Variables

Templates (Tera)

Hooks and Watchers

Hook Types

Syntax

Watch Files

Hook Environment Variables

Configuration and Settings

File Hierarchy

Key Settings Reference

Minimum Version

Automatic Environment Variables

Prepare Feature (Experimental)

Monorepo Tasks (Experimental)

Positional Arguments (`arg`)

Flags (`flag`)

Custom Completions (`complete`)

Structured `run` Array

Structured `depends` with Args/Env

Task Inheritance (`extends`)

Special Directives (`env._`)

`_.path` — Prepend to PATH

`_.file` — Load from .env/json/yaml files

`_.source` — Source shell scripts

Profiles (`MISE_ENV`)