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.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/instructions/mistralai/mistral-vibe/agents-md)<a href="https://agentmods.dev/instructions/mistralai/mistral-vibe/agents-md"><img src="https://agentmods.dev/badge/instructions/mistralai/mistral-vibe/agents-md/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/instructions/mistralai/mistral-vibe/agents-md"><img src="https://agentmods.dev/badge/instructions/mistralai/mistral-vibe/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.01818 | $0.01818 |
| Opus 5.5 | $0.00727 | $0.00727 |
| Sonnet 5.5 | $0.00364 | $0.00364 |
| Haiku 4.5 | $0.00182 | $0.00182 |
Grade A, and why
mistral-vibe AGENTS.md scanned grade A with 1 finding 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 4d 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.
Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
| Narration playback, TTS, audio output device following, or the `AudioPlayer`/`DeviceFollower`/`NarrationController` classes | [0017 Narration Playback in the ACP Subprocess](docs/adr/0017-narration-playback-in-subproce How it starts
The opening of the file, as written. The whole thing — 64 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Conventions for AI agents and humans contributing to Mistral Vibe — a CLI coding assistant: a Rust terminal UI over a Python 3.12+ app server managed with uv.
Layout: Unified Harness Core and Runtime are external dependencies that execute and persist sessions; vibe/app_server hosts sessions and exposes product features and RPCs; vibe/core retains shared config, tool, permission and other utilities; vibe/cli-rust is the terminal UI (Rust, Ratatui), a thin client over vibe-app-server; vibe/cli holds the vibe launcher that execs it and the audio helpers vibe/acp uses; vibe/acp bridges to the Agent Client Protocol; vibe/setup holds auth and the Textual onboarding wizard behind vibe-acp --setup. Tests live in tests/ with autouse fixtures in conftest.py and test doubles in tests/stubs/.
Architecture Decisions
Before architecture-affecting changes, read 0002 Ownership Boundaries and the matching ADR below. For new agent capabilities, also read 0018, including its Runtime/Core scope rule. Flag conflicts with ADR direction before implementing. When writing ADRs, follow the write-vibe-adr skill.
| Change area | ADR |
|---|---|
| Architecture principles, module boundaries, startup/runtime speed, simple changes | 0001 Architecture Principles |
| Core/Runtime/app-server ownership, session hosting, adapters, or delivery clients | 0002 Ownership Boundaries |
| Tool contracts, permissions, tool output, UI metadata, or tool adapters | 0004 Typed Permissioned Tools |
| Config models, layering, defaults, migrations, reloads, or runtime overrides | 0005 Layered Configuration |
| Session logging, resume, rewind, transcript metadata, or migrations | 0006 Local Sessions |
| Skills, agents, subagents, hooks, MCP, connectors, custom tools, or discovery | 0007 Extension Mechanisms |
| Adding or changing analytics instrumentation, telemetry events, or event properties | 0008 Feature Instrumentation |
| Client protocol, streaming, cancellation, projections, ordering, callbacks, or transports | 0009 App Server Client Boundary |
Textual Content rendering, styled text, markup parsing, or theme variables in the vibe-acp --setup onboarding wizard |
0010 Textual Content Rendering |
| Slash commands running while busy, side-channel commands, or idle-only settings persistence | 0012 Slash Commands While Busy |
| Queued-prompt selection/edit mode, copy-on-write consumed edits, or promotion-race widget-identity tracking | 0013 Queue Selection and Edit Mode |
| Parsing backend responses, connector/MCP bootstrap fields, or any client/backend wire-contract change that must tolerate self-hosted version skew | 0014 Backend Contract Compatibility |
Outbound TLS connections, certificate roots, or enable_system_trust_store |
0015 Outbound TLS Trust Policy |
| Rust CLI delivery surface, thin-client boundary, unidirectional state, or bounded-resource rules | 0016 Rust CLI Delivery Surface |
Narration playback, TTS, audio output device following, or the AudioPlayer/DeviceFollower/NarrationController classes |
0017 Narration Playback in the ACP Subprocess |
| Adding agent behavior, custom tools, built-in plugins/skills, RPC families, or feature-module dependencies | 0018 Modular App-Server Capabilities |
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.
- 4d ago Changed 7b11d081bd31
- 5d ago Changed · -2 lines · +27 tokens per session 2819bf39ce98
- 15d ago Changed · +8 lines · +287 tokens per session ffdfe0762da2
- 1mo ago Changed · +2 lines · +105 tokens per session 73d97f6e1d54
- 1mo ago Changed · +2 lines · +81 tokens per session 39a33c3e79ef
- 1mo ago First seen · 54 lines · 1,318 tokens per session scan A 521b8d01c9c3
mistral-vibe AGENTS.md is an instructions file published in the GitHub repository mistralai/mistral-vibe (5,193 stars, last pushed 2d ago), licensed Apache-2.0. It adds 1,818 tokens to every session, about $0.0073 per session on Opus 5.5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other instructions, from other repositories
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