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mistral-mcp

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Full Mistral AI MCP server — OCR, Voxtral audio, Codestral FIM, durable workflows, document extraction — for Claude Code, Cursor, Windsurf, Zed, Mistral Connectors

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# mistral-mcp

> **MCP server for Mistral AI — chat, OCR, audio (Voxtral), code (Codestral), vision, agents, batch, and durable workflows.**
> Plug into Claude Code, Cursor, Zed, Windsurf, or Claude Desktop in one command.
>
> _Version française : [README.fr.md](./README.fr.md)_

[![npm version](https://img.shields.io/npm/v/mistral-mcp?color=brightgreen)](https://www.npmjs.com/package/mistral-mcp)
[![CI](https://github.com/Swih/mistral-mcp/actions/workflows/ci.yml/badge.svg)](https://github.com/Swih/mistral-mcp/actions/workflows/ci.yml)
[![Glama MCP score](https://glama.ai/mcp/servers/Swih/mistral-mcp/badges/score.svg)](https://glama.ai/mcp/servers/Swih/mistral-mcp)
[![license](https://img.shields.io/badge/license-MIT-black)](https://raw.githubusercontent.com/Swih/mistral-mcp/main/LICENSE)
![MCP spec](https://img.shields.io/badge/MCP%20spec-2025--11--25-purple)

---

## What this is

`mistral-mcp` exposes the full Mistral AI API as a set of MCP tools, resources, and prompts. An MCP client (Claude Code, Cursor, etc.) can call `mistral_ocr` to extract text from a PDF, `voxtral_transcribe` to transcribe a meeting recording, or `workflow_execute` to start a durable multi-step process — all without leaving the agent loop.

**Unique to Mistral and not available from other MCP servers:**
- `mistral_ocr` — Mistral Document AI: structured text + bbox annotations from any PDF or image
- `voxtral_transcribe` — Voxtral: transcription with optional speaker diarization
- `codestral_fim` — Codestral fill-in-the-middle (FIM) for inline code completion
- `workflow_execute / status / interact` — Temporal-backed durable execution with human-in-the-loop signals
- French-optimized models (`mistral-large-latest`, `mistral-medium-latest`) and curated French prompts

**What this server does not expose:** fine-tuning, user management, non-FR/EN prompts.

---

## Why this matters for European teams

`mistral-mcp` is designed for teams that want to use Mistral capabilities inside MCP clients (Claude Code, Cursor, Zed, Windsurf, Claude Desktop) while keeping control over deployment, API keys, cache behavior, and tool exposure.

This can be useful for European organisations evaluating AI stacks under GDPR, DORA, sector-specific constraints (HDS, EBA), or internal sovereignty requirements.

**What this project provides:**

- self-hosted MCP server, no mandatory SaaS proxy
- bring-your-own Mistral API key (BYOK) — Mistral states API data is not used to train its models
- lean `core` profile and focused `metier-docs` profile to limit tool exposure
- `process_document` cache configurable per-call and via `MISTRAL_MCP_CACHE_DIR`
- ID document cache bypass enabled by default, even when `kind:"auto"` resolves to `id_document`
- Streamable HTTP + bearer auth path for controlled / on-prem deployments
- French-first prompts and skills (meeting minutes, legal summary, invoice reminder, commit message, email reply)
- free Experiment tier on the Mistral side covers most evaluation needs (~1B tokens/month)

**What this project does NOT claim:**

- it is not a GDPR, DORA, HDS, or ISO certification, and it does not replace a DPIA, vendor review, security audit, or legal assessment
- Mistral provider terms, data residency, subprocessor list, retention settings, and incident handling must be reviewed separately at [mistral.ai/terms](https://mistral.ai/terms) and [legal.mistral.ai](https://legal.mistral.ai)
- this repo is community-maintained, not an official Mistral integration; nothing here modifies Mistral's contractual data terms with you

In practice, `mistral-mcp` reduces the integration surface you have to assess. It does not replace the legal/compliance work itself.

---

## Quick start

**Claude Code** (recommended — auto-installs, prompts for API key, ships 11 skills):
```text
/plugin install mistral-mcp@swih-plugins
```

**Cursor / Zed / Windsurf / Claude Desktop** — add to your MCP settings JSON:
```json
{
  "mcpServers": {
    "mistral": {
      "command": "npx",
      "args": ["-y", "mistral-mcp@latest"],
      "env": { "MISTRAL_API_KEY": "your_key_here" }
    }
  }
}
```

**Manual Claude Code registration:**
```bash
claude mcp add mistral -- npx -y mistral-mcp@latest
```

---

## Profiles

`MISTRAL_MCP_PROFILE` controls how many tools are exposed (default: `core`).

| Profile | Tools | Use when |
|---|---|---|
| `core` (default) | 12 | Daily agentic use — lean context footprint |
| `admin` | 41 | Full Mistral API surface — embeddings, streaming, batch, classify, files, agents, TTS, document extraction, stateful conversations, RAG libraries. Best for debug, CI, scripts. |
| `workflows` | 7 | Pipeline orchestration + connectors only |
| `metier-docs` | 13 | Documents vertical — core + `process_document` macro-tool |

> `full` is accepted as a deprecated alias of `admin` for backward compatibility.

```bash
MISTRAL_MCP_PROFILE=admin npx mistral-mcp
```

---

## Tools

### Core profile (12 tools — always available)

| Tool | What it does |
|---|---|
| `mistral_chat` | Chat completion. Supports all Mistral models, `response_format`, `reasoning_effort` for Magistral. |
| `mistral_vision` | Multimodal chat with images (URL or base64). |
| `mistral_ocr` | Document AI — extract text, bbox, and JSON annotations from PDFs/images. Pass `includeBlocks: true` for OCR 4 paragraph-level blocks (text/title/table/image/equation/... with bounding boxes). |
| `codestral_fim` | Fill-in-the-middle code completion (Codestral model). |
| `voxtral_transcribe` | Audio → text. Pass `diarize: true` for speaker separation. |
| `workflow_execute` | Start a Mistral Workflow (Temporal-backed durable execution). |
| `workflow_status` | Poll a running workflow — returns `RUNNING \| COMPLETED \| FAILED \| ...`. |
| `workflow_interact` | Signal / query a running workflow. Used for human-in-the-loop checkpoints. |
| `connectors_list` | Discover Mistral Connectors (MCP/HTTP integrations) visible to the caller. |
| `connectors_get` | Fetch one connector's public metadata (never credentials). |
| `connectors_list_tools` | List the MCP tools a connector exposes, with their input schema. |
| `connectors_call_tool` | Invoke a connector's tool — real MCP `CallToolResult` passthrough. |

### Documents vertical (`MISTRAL_MCP_PROFILE=metier-docs`)

| Tool | What it does |
|---|---|
| `process_document` | Single-call macro-tool: OCR → classify (kind=auto) → typed extraction → validation → cache. Kinds: `contract` / `invoice` / `id_document` / `generic`. Returns a discriminated union. PII-safe cache (id_document auto-bypass). Configurable `minOcrConfidence`. |

### Admin profile only (+29 tools, set `MISTRAL_MCP_PROFILE=admin`)

| Group | Tools |
|---|---|
| Generation | `mistral_chat_stream`, `mistral_embed`, `mistral_tool_call` |
| Agents | `mistral_agent`, `mistral_moderate`, `mistral_classify` |
| Audio | `voxtral_speak` (TTS) |
| Files | `files_upload`, `files_list`, `files_get`, `files_delete`, `files_signed_url` |
| Batch | `batch_create`, `batch_get`, `batch_list`, `batch_cancel` |
| Sampling | `mcp_sample` (delegates generation to the MCP client's own model) |
| Conversations | `conversation_start`, `conversation_append`, `conversation_get`, `conversation_list`, `conversation_history`, `conversation_delete` — stateful multi-turn agent loops with Mistral's built-in tools (web_search, code_interpreter, image_generation, document_library) |
| Libraries (RAG) | `libraries_list`, `libraries_get`, `libraries_documents_list`, `libraries_documents_upload`, `libraries_documents_status` — discover and feed already-created Mistral Libraries; pair with `conversation_start`'s `documentLibraryIds` to search them |

---

## Resources

| URI | What it returns |
|---|---|
| `mistral://models` | Live model catalog + accepted aliases |
| `mistral://voices` | Live Voxtral TTS voice catalog |
| `mistral://workflows` | Live list of deployed workflows (use `name` as `workflowIdentifier`) |

---

## Prompts

Curated prompts with structured arguments and MCP completion support:

| Prompt | Input | Output |
|---|---|---|
| `french_meeting_minutes` | transcript text | Structured French meeting minutes |
| `french_email_reply` | received email + context | Polished French reply |
| `french_commit_message` | git diff | Conventional Commits message in French |
| `french_legal_summary` | legal document text | Plain-French summary + key clauses |
| `french_invoice_reminder` | debtor, amount, days overdue, tone | B2B dunning letter in French |
| `codestral_review` | git diff | Focused code review (security / logic / style) |

---

## Claude Code skills (11)

Install via the `swih-plugins` marketplace to get these namespaced skills:

**Routing**
- `/mistral-mcp:mistral-router` — picks the right Mistral model + tool for any task

**Code**
- `/mistral-mcp:codestral-review` — fetches the current diff, runs a focused review

**French workflows**
- `/mistral-mcp:french-commit-message` — Conventional Commits message in French
- `/mistral-mcp:french-meeting-minutes` — audio or text → structured French minutes
- `/mistral-mcp:french-invoice-reminder` — B2B dunning letter with controlled tone

**Document & audio processing**
- `/mistral-mcp:contract-analyzer` — OCR → risk-rated clause extraction (JSON)
- `/mistral-mcp:pdf-invoice-extractor` — OCR → structured invoice fields for reconciliation
- `/mistral-mcp:audio-dispatch` — transcribe + diarize → per-speaker action plan

**Human-in-the-loop workflows**
- `/mistral-mcp:contract-review-workflow` — durable contract review with approval gates
- `/mistral-mcp:compliance-audit-workflow` — multi-step audit with mid-run findings + decisions
- `/mistral-mcp:research-pipeline-workflow` — hypothesis-driven research with amendment injection

---

## Install

```bash
# Run directly (no global install)
npx mistral-mcp

# Global install
npm install -g mistral-mcp && mistral-mcp

# Docker
docker build -t mistral-mcp .
docker run -i --rm -e MISTRAL_API_KEY=your_key mistral-mcp

# From source
git clone https://github.com/Swih/mistral-mcp.git
cd mistral-mcp && npm install && npm run build
node dist/index.js
```

---

## Transport

| Mode | How to enable | Default |
|---|---|---|
| **stdio** | Default | `node dist/index.js` |
| **Streamable HTTP** | `MCP_TRANSPORT=http` or `--http` flag | `127.0.0.1:3333/mcp` |

HTTP env vars: `MCP_HTTP_HOST`, `MCP_HTTP_PORT`, `MCP_HTTP_PATH`, `MCP_HTTP_TOKEN` (bearer auth), `MCP_HTTP_ALLOWED_ORIGINS`, `MCP_HTTP_STATELESS=1`.

`/healthz` is public and does not touch the MCP server.

---

## Use as a Mistral Connector (beta)

`mistral-mcp` ships the [Streamable HTTP transport](https://modelcontextprotocol.io/specification/2025-11-25/) and bearer auth that [Mistral Connectors](https://docs.mistral.ai/agents/tools/mcp) require. Deployment guides for Cloudflare Tunnel, Fly.io, and Render are in [`examples/deploy/README.md`](./examples/deploy/).

| Surface | Status |
|---|---|
| Local MCP clients (Claude Code, Cursor, Zed, Windsurf, Claude Desktop) | Stable |
| Streamable HTTP transport + bearer auth | Tested locally (handshake + 401 + initialize verified) |
| Mistral Connector registration via `POST /v1/connectors` | **Setup guide provided — Connectors are a beta feature, the API may change** |
| Connector tool calls in Conversations/Agents | Untested end-to-end (requires public HTTPS deployment) |
| OAuth 2.1 Connector auth | Pending — bearer-only today |

```bash
curl -X POST https://api.mistral.ai/v1/connectors \
  -H "Authorization: Bearer $MISTRAL_API_KEY" \
  -d '{"name":"mistral_self","server":"https://your-deploy/mcp","visibility":"private"}'
```

> Mistral Connectors expose **tools only** today. Resources, prompts, sampling, and elicitation remain available via local clients.

---

## Comparison with other Mistral MCP servers

| Project | Scope | Best for |
|---|---|---|
| **mistral-mcp** | Full Mistral API + Workflows + 11 Claude Code skills | All-in-one self-hosted |
| `mcp-mistral-ocr` (community) | OCR only | Lightweight OCR-only setup |
| Speakeasy `mistral-mcp-server-example` | Generated demo | Reference / SDK template |
| Composio `mistral_ai` toolkit | SaaS-routed Mistral tools | Hosted, no infra |

`mistral-mcp` differentiates by combining OCR, Voxtral diarization, Codestral FIM, and Temporal-backed Workflows in one server, with French-first prompts and a Claude Code plugin marketplace.

---

## Development

```bash
npm run dev      # tsx watch
npm run build    # tsc → dist/
npm run lint     # tsc --noEmit
npm test         # 190+ tests (unit + contract + stdio e2e + live API)
npm run inspector
```

Test pyramid: unit → contract → stdio e2e → live API (requires `MISTRAL_API_KEY`).

---

## License

mistral-mcp

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