mise

mise is a skill for Claude Code from basher83/lunar-claude. It costs 27 tokens per session (3,568 once invoked), scanned A, original, MIT.

Guidance for configuring mise, a tool-version manager and task runner that can replace separate version managers, Makefiles, and shell scripts.

In plain words
What is it for?
Use it to define mise configuration for tools, tasks, hooks, presets, and language-specific development environments.
Why use it?
It helps keep tool versions, project commands, environment variables, and setup rules in one project configuration file.

Skill for Claude Code

Written for Claude Code: when-to-use in frontmatter. Also seen: mentions Claude Code.

Part of the repo-forge plugin — 1 skill, 1 command shipped together

Good fit Use it to define mise configuration for tools, tasks, hooks, presets, and language-specific development environments.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/basher83/lunar-claude/mise
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add basher83/lunar-claude --skill mise
Clone the repo
git clone --depth 1 https://github.com/basher83/lunar-claude

Made for: Claude Code.

Or install repo-forge, the plugin that ships this one along with the rest of its 1 skill, 1 command.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for mise

README.md
[![agentmods](https://agentmods.dev/badge/skills/basher83/lunar-claude/mise/github.svg)](https://agentmods.dev/skills/basher83/lunar-claude/mise)
Your own site
<a href="https://agentmods.dev/skills/basher83/lunar-claude/mise"><img src="https://agentmods.dev/badge/skills/basher83/lunar-claude/mise/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for mise

Your own site · 80×15
<a href="https://agentmods.dev/skills/basher83/lunar-claude/mise"><img src="https://agentmods.dev/badge/skills/basher83/lunar-claude/mise.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,568 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 3 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Privilege Escalation · line 214
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • medium Tool Misuse · line 210
    Tool defaults are unsafe or overly permissive (e.g. disabled TLS verification, no authentication, world-writable permissions). Unsafe defaults widen the attack surface.
    Fix: Override unsafe defaults with secure settings (verify=True, auth required, restrictive permissions). Review and harden all tool configurations.
  • medium Rogue Agent · line 217
    Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.
    Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00027 $0.03568
Opus 5 $0.00014 $0.01784
Sonnet 5 $0.00005 $0.00714
Haiku 4.5 $0.00003 $0.00357

Measured 6d ago against content hash 8623357cad7b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

mise scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/devops/repo-forge/skills/mise/SKILL.md · 391 lines

How it starts

The opening of the file, as written. The whole thing — 391 lines — stays where its author put it; the contents beside it link to each section on GitHub.

mise

mise is a polyglot tool version manager and task runner. A single mise.toml replaces Makefiles, shell scripts, and language-specific version managers (nvm, pyenv, rustup). It manages tool versions, defines project tasks, and sets environment variables from one configuration file.

Config File Structure

Order sections canonically for consistency:

min_version = "2024.9.5"

[env]
DATABASE_URL = "postgres://localhost/myapp_dev"

[tools]
python = "3.12"

[tasks]
test.run = "pytest"

[settings]
auto_install = true
not_found_auto_install = true
task_run_auto_install = true

Use min_version to enforce a minimum mise version. Recognized top-level sections: [env], [tools], [tasks], [settings], [plugins], [tool_alias], [task_config], [vars].

Tool Version Management

Pin every tool to a concrete semver ("0.15.16"), never "latest" or "lts". Where a repo extends basher83/renovate-config, the mise preset auto-merges tool bumps — but only for semver-pinned entries. "latest" is invisible to renovate's mise manager, so it silently strands a tool at whatever version installed first; a semver pin gets the same currency plus renovate visibility and rollback. ("latest" once froze hk at 1.36.0, three minors past the 1.40.0 fix for its config-cache round-trip bug.) Produce pins by resolve-then-pin: mise use --pin <tool> resolves the current version and writes it exactly, and global MISE_PIN=1 makes that the default; bare mise use <tool> writes the unpinnable "latest" under mise's fuzzy default. Do not phrase this guidance as "resolve live" or "never hardcode" — agents read that as "use latest"; name the --pin mechanism explicitly. The format table below catalogs what mise accepts; this policy governs what to write.

Specify tools in the [tools] section. mise installs and activates them automatically.

[tools]
node = "22"                   # Major version prefix
python = "3.12.2"             # Exact version
go = "latest"                 # Latest stable
erlang = "lts"                # LTS channel

Read the full file on GitHub · 391 lines

Files

What ships with it

7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 391 lines · 27 tokens per session scan A 8623357cad7b

Subscribe to this mod's changes

mise is a skill published in the GitHub repository basher83/lunar-claude (23 stars, last pushed today), licensed MIT. It adds 27 tokens to every session and 3,568 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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