Mistral Vibe is a command-line coding assistant that lets users converse with a codebase and use natural language to explore or change projects. Developers use it for file editing, code searching, version-control tasks, and shell commands through Mistral’s models. Its catalogue add-ons provide skills and instructions for customizing the assistant’s workflows.
Borrowing it
Nothing to install: this file belongs to mistralai/mistral-vibe. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/mistralai/mistral-vibe/main/.agents/skills/vibe-python-style/SKILL.mdgit clone --depth 1 https://github.com/mistralai/mistral-vibeWrote 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/mistralai/mistral-vibe/vibe-python-style)<a href="https://agentmods.dev/skills/mistralai/mistral-vibe/vibe-python-style"><img src="https://agentmods.dev/badge/skills/mistralai/mistral-vibe/vibe-python-style/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/mistralai/mistral-vibe/vibe-python-style"><img src="https://agentmods.dev/badge/skills/mistralai/mistral-vibe/vibe-python-style.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
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 →
- medium Rogue Agent · line 23 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.
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 | $0.00056 | $0.01129 |
| Opus 5.5 | $0.00022 | $0.00452 |
| Sonnet 5.5 | $0.00011 | $0.00226 |
| Haiku 4.5 | $0.00006 | $0.00113 |
Grade A, and why
vibe-python-style 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 1mo 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 — 60 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Vibe Python Style
Conventions for writing Python in the Vibe codebase. Apply whenever writing, reviewing, or refactoring Python code.
Style
- Prefer
match/caseover longif/elifchains. - Use the walrus operator
:=only when it shortens code and improves clarity. - Be a never-nester: early returns and guard clauses over nested blocks.
- Modern type hints only: built-in generics (
list,dict) and|unions. Never importOptional,Union,Dict,Listfromtyping. - Use
pathlib.Path(andanyio.Pathin async paths) instead ofos.path. - Use f-strings, comprehensions, and context managers; follow PEP 8.
- Enums:
StrEnum/IntEnumwithauto()and UPPERCASE members. For type-mixing, the mix-in type comes beforeEnumin the bases. Add methods or@propertyrather than parallel lookup tables. - Write declarative, minimalist code: express intent, drop boilerplate.
- Never call a private method from outside of its class in production code. Accessing private methods in tests is acceptable.
- Avoid comments and docstrings, except for when there's a hard to spot corner case
Typing & imports
- Pyright is strict and gates CI; fix types at the source.
- No relative imports —
ban-relative-imports = "all". Alwaysfrom vibe.core.x import …. - No inline
# type: ignoreor# noqa. Fix with refined signatures (TypeVar, Protocol),isinstanceguards,typing.castwhen control flow guarantees the type, or a small typed wrapper at the boundary.
TYPE_CHECKING and lazy imports
Moving imports under if TYPE_CHECKING: or into function bodies cuts startup time but risks runtime NameError. Before merging any import-deferral change, run:
- Ruff
TC004(pre-commit hook) — per-file: flagsTYPE_CHECKING-only names referenced at runtime. uv run python scripts/check_import_contracts.py— runtime cross-file: imports everyfrom <mod> import <name>acrossvibe/andtests/to verify it resolves; also rebuilds Pydantic models to catch lazily-failing field types. Catches cross-file re-exportsTC004misses. Missing non-vibe deps are non-blocking warnings.uv run scripts/suggest_lazy_imports.py— informational: reports deferral candidates (TC001–TC003+ single-function heuristic). Not gated.
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.
- 1mo ago First seen · 60 lines · 56 tokens per session scan A 1998a7f0dc9f
vibe-python-style is a skill published in the GitHub repository mistralai/mistral-vibe (5,193 stars, last pushed 2d ago), licensed Apache-2.0. It adds 56 tokens to every session and 1,129 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-30.
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