Add DaxFormatter MCP server (typescript/stdio)

Author: albertospelta

.github/dependabot.yml

@@ -19,4 +19,15 @@ updates:
       interval: "weekly"
     open-pull-requests-limit: 10
     assignees:
-    - "albertospelta"
+    - "albertospelta"
+
+  - package-ecosystem: "npm"
+    directory: "/mcp"
+    schedule:
+      interval: "weekly"
+    open-pull-requests-limit: 10
+    assignees:
+    - "albertospelta"
+    groups:
+      dev-dependencies:
+        dependency-type: "development"

.github/workflows/ci-mcp.yml

@@ -0,0 +1,47 @@
+name: ci-mcp
+
+on:
+  pull_request:
+    branches: [master]
+    paths:
+      - mcp/**
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  build-and-test:
+    name: build-and-test
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          persist-credentials: false
+
+      - uses: actions/setup-node@v6
+        with:
+          node-version: "20"
+          cache: npm
+          cache-dependency-path: mcp/package-lock.json
+
+      - name: install
+        working-directory: mcp
+        run: npm ci
+
+      - name: lint
+        working-directory: mcp
+        run: npm run lint
+
+      - name: typecheck
+        working-directory: mcp
+        run: npm run typecheck
+
+      - name: build
+        working-directory: mcp
+        run: npm run build
+
+      - name: test
+        working-directory: mcp
+        run: npm test

.github/workflows/publish-mcp.yml

@@ -0,0 +1,48 @@
+name: publish-mcp
+
+on:
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  id-token: write # npm provenance
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          fetch-depth: 0 # Nerdbank.GitVersioning needs full history
+          persist-credentials: false
+          
+      - uses: actions/setup-dotnet@v5
+        with:
+          global-json-file: global.json
+
+      - name: install
+        working-directory: mcp
+        run: npm ci
+
+      - name: build
+        working-directory: mcp
+        run: npm run build
+
+      - name: test
+        working-directory: mcp
+        run: npm test
+
+      - uses: actions/setup-node@v6
+        with:
+          node-version: "20"
+          registry-url: "https://registry.npmjs.org"
+          cache: npm
+          cache-dependency-path: mcp/package-lock.json
+
+      # `prepack` stamps the Nerdbank.GitVersioning version into package.json; `postpack` resets it.
+      - name: publish
+        working-directory: mcp
+        run: npm publish --provenance --access public
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

mcp/.gitignore

@@ -0,0 +1,4 @@
+node_modules/
+dist/
+coverage/
+*.tsbuildinfo

mcp/README.md

@@ -0,0 +1,65 @@
+# @sqlbi/daxformatter-mcp
+
+A [Model Context Protocol](https://modelcontextprotocol.io) (MCP) server that formats and validates DAX from any MCP-enabled AI client — Claude Code, Claude Desktop, Cursor, VS Code, and others — using the SQLBI DAX Formatter service.
+
+Local **stdio** server, run on demand via `npx`. Requires [Node.js](https://nodejs.org) 18+.
+
+## Installation guide
+
+The server is **local, stdio, anonymous** — no install step, no API key, no login. It exposes one tool, `format_dax`. After connecting, just ask the agent to format DAX.
+
+The registration name below is `DaxFormatter`, matching the remote Streamable HTTP server, so a single name works across both.
+
+### Visual Studio Code
+
+[![Install in VS Code](https://img.shields.io/badge/VS_Code-Install_DAX_Formatter-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://vscode.dev/redirect/mcp/install?name=DaxFormatter&config=%7B%22type%22%3A%22stdio%22%2C%22command%22%3A%22npx%22%2C%22args%22%3A%5B%22-y%22%2C%22%40sqlbi%2Fdaxformatter-mcp%22%5D%7D)
+[![Install in VS Code Insiders](https://img.shields.io/badge/VS_Code_Insiders-Install_DAX_Formatter-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://insiders.vscode.dev/redirect/mcp/install?name=DaxFormatter&config=%7B%22type%22%3A%22stdio%22%2C%22command%22%3A%22npx%22%2C%22args%22%3A%5B%22-y%22%2C%22%40sqlbi%2Fdaxformatter-mcp%22%5D%7D&quality=insiders)
+
+Click a badge to install (VS Code asks for confirmation), or add it from the command line:
+
+```bash
+code --add-mcp '{"name":"DaxFormatter","type":"stdio","command":"npx","args":["-y","@sqlbi/daxformatter-mcp"]}'
+```
+
+### Claude Code (CLI)
+
+```bash
+# add the server (-s user enables it in every project; omit -s for the current project only)
+claude mcp add -s user DaxFormatter -- npx -y @sqlbi/daxformatter-mcp
+
+# verify it was added and check the connection status
+claude mcp get DaxFormatter
+```
+
+### Claude Desktop / other clients (config file)
+
+Add this to the client's MCP configuration file (e.g. `claude_desktop_config.json`, or a `.mcp.json` at the repo root):
+
+```json
+{
+  "mcpServers": {
+    "DaxFormatter": {
+      "command": "npx",
+      "args": ["-y", "@sqlbi/daxformatter-mcp"]
+    }
+  }
+}
+```
+
+No separate install step: `npx` downloads and runs the server on demand.
+
+## What it does
+
+The server exposes a single tool, **`format_dax`** — just ask your assistant to format or check some DAX and it will use it:
+
+- Formats one or more DAX expressions in a single call.
+- Reports syntax errors with their line and column, so the same call both **formats** and **validates** (an expression that can't be parsed comes back unformatted, with the errors).
+- Optional formatting controls: line style, spacing, and the list/decimal separators.
+
+## Privacy
+
+Your DAX is sent to the DAX Formatter web service (`daxformatter.com`), where the formatting happens. If you provide server or database names, they are **SHA-256 hashed** before being sent — they never leave your machine in clear text.
+
+## License
+
+[MIT](https://github.com/sql-bi/DaxFormatter/blob/master/LICENSE.md)

mcp/biome.json

@@ -0,0 +1,23 @@
+{
+  "$schema": "https://biomejs.dev/schemas/1.9.4/schema.json",
+  "organizeImports": { "enabled": false },
+  "linter": {
+    "enabled": true,
+    "rules": { "recommended": true }
+  },
+  "formatter": {
+    "enabled": true,
+    "indentStyle": "space",
+    "indentWidth": 4,
+    "lineWidth": 100
+  },
+  "files": {
+    "ignore": ["dist", "node_modules", "coverage"]
+  },
+  "overrides": [
+    {
+      "include": ["*.json", "*.jsonc"],
+      "formatter": { "indentWidth": 2 }
+    }
+  ]
+}