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.
npx skills add julianobarbosa/claude-code-skills --skill misegit clone --depth 1 https://github.com/julianobarbosa/claude-code-skillsWrote 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.
[](https://agentmods.dev/skills/julianobarbosa/claude-code-skills/mise)<a href="https://agentmods.dev/skills/julianobarbosa/claude-code-skills/mise"><img src="https://agentmods.dev/badge/skills/julianobarbosa/claude-code-skills/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.
<a href="https://agentmods.dev/skills/julianobarbosa/claude-code-skills/mise"><img src="https://agentmods.dev/badge/skills/julianobarbosa/claude-code-skills/mise.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00246 | $0.01942 |
| Opus 5 | $0.00123 | $0.00971 |
| Sonnet 5 | $0.00049 | $0.00388 |
| Haiku 4.5 | $0.00025 | $0.00194 |
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 10d 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.
How it starts
The opening of the file, as written. The whole thing — 132 lines — stays where its author put it; the contents beside it link to each section on GitHub.
mise Skill
mise (pronounced "meez", short for mise-en-place) is a single static binary that does three jobs
that usually take three tools:
| Job | Tools it replaces | Where it lives in config |
|---|---|---|
| Manage tool/language versions per project | asdf, nvm, rbenv, pyenv | [tools] |
| Switch environment variables per directory | direnv, dotenv | [env] |
| Run project tasks | make, npm scripts, just | [tasks.*] + mise run |
Everything lives in one committed mise.toml. This skill enforces a consistent house style so
every project's mise config reads the same way, and treats mise.toml as source-controlled infra:
pinned, reviewable, reproducible.
Before you touch anything
mise.toml can execute code (via [tasks], env._.source, env._.file). Two habits keep that safe
and predictable:
- Verify mise is present and how it's wired: run
mise --versionandmise doctor.doctortells you whether the shell is activated, whether shims are onPATH, and which config files load. Never assume — the #1 class of mise bugs is "tool installed but not found", and it's almost always an activation/shim issue, not a version issue. - Trust before you run: mise refuses to evaluate a config in an untrusted directory. After
creating or editing a
mise.toml,mise trustin that directory (or add the path totrusted_config_paths).
Per the operating rules here: any executable helper you add to a project ships as TypeScript run
with bun, never Python or npm/npx.
Choose a workflow
Route to the workflow file that matches the request. Each is a self-contained recipe — read it, then follow it.
| The user wants to… | Workflow |
|---|---|
| Stand up mise for a repo (tools + env + tasks from scratch) | Workflows/SetupProject.md |
| Add or pin a tool, pick the right backend | Workflows/AddTool.md |
| Define, wire, and run tasks | Workflows/CreateTasks.md |
| Move an existing repo off asdf / nvm / direnv / make | Workflows/MigrateToMise.md |
| Fix "tool not found" / wrong version / activation / trust | Workflows/Troubleshoot.md |
What ships with it
12 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.
- References/CliReference.md 3.5 KB
- References/Configuration.md 3.4 KB
- References/Environments.md 2.6 KB
- References/Tasks.md 3.5 KB
- References/Tools.md 4.2 KB
- Templates.md 3.4 KB
- Tools/lint.ts 6.8 KB runs code
- Workflows/AddTool.md 2.1 KB
- Workflows/CreateTasks.md 2.3 KB
- Workflows/MigrateToMise.md 2.8 KB
- Workflows/SetupProject.md 2.7 KB
- Workflows/Troubleshoot.md 2.6 KB
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.
- 10d ago First seen · 132 lines · 246 tokens per session scan A 695b801eef11
mise is a skill published in the GitHub repository julianobarbosa/claude-code-skills (10 stars, last pushed 14d ago), licensed MIT. It adds 246 tokens to every session and 1,942 once invoked, about $0.0012 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 2026-08-31.
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