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flarcoflarco
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Add MCP publishing workflow, validation script, and server configuration
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‎.github/workflows/publish-mcp.yml‎

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name: Publish to MCP Registry
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on:
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workflow_dispatch:
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inputs:
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version:
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description: 'Version to publish'
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required: true
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type: string
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jobs:
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# from https://github.com/domdomegg/time-mcp-pypi/blob/master/.github/workflows/ci.yml
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publish:
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needs: ci
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runs-on: ubuntu-latest
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timeout-minutes: 15
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permissions:
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contents: write # Required for creating GitHub releases
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id-token: write # Required for MCP registry OIDC authentication
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env:
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CI: true
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steps:
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- name: Checkout ${{ github.sha }}
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uses: actions/checkout@v4
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- name: Set up Python 3.13
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uses: actions/setup-python@v4
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with:
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python-version: '3.13'
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- name: Extract version
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id: version
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run: echo "VERSION=${{ github.event.inputs.version }}" >> $GITHUB_OUTPUT
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- name: Install dependencies
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run: pip install build
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- name: Update project version
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run: |
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sed -i 's/{{VERSION}}/${{ steps.version.outputs.VERSION }}/g' server.json
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- name: Install MCP Publisher
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run: |
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curl -L "https://github.com/modelcontextprotocol/registry/releases/download/v1.0.0/mcp-publisher_1.0.0_$(uname -s | tr '[:upper:]' '[:lower:]')_$(uname -m | sed 's/x86_64/amd64/;s/aarch64/arm64/').tar.gz" | tar xz mcp-publisher
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- name: Login to MCP Registry
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run: ./mcp-publisher login github-oidc
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- name: Publish to MCP Registry
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run: ./mcp-publisher publish
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# - name: Create GitHub Release
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# uses: softprops/action-gh-release@v2
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# with:
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# files: dist/*
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# generate_release_notes: true
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# env:
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# GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

‎.gitignore‎

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Pipfile
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.DS_Store
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VERSION
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VERSION
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.mcpregistry_github_token
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.mcpregistry_registry_token
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mcp-key.pem

‎README.md‎

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## MCP
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To Login:
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```
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mcp-publisher login dns --domain slingdata.io --private-key $(openssl pkey -in mcp-key.pem -noout -text | grep -A3 "priv:" | tail -n +2 | tr -d ' :\n')`
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```
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To Publish:
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```
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mcp-publisher publish
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```
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mcp-name: io.slingdata/sling-cli

‎scripts/validate-mcp.sh‎

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#!/bin/bash
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# filepath: scripts/validate-mcp.sh
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set -e
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echo "🔍 Validating MCP server configuration..."
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# Check if Python is available
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if ! command -v python3 &> /dev/null && ! command -v python &> /dev/null; then
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echo "⚠️ Python not found. MCP server requires Python >=3.8"
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else
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echo "✅ Python found"
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fi
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# Check if pip is available
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if ! command -v pip3 &> /dev/null && ! command -v pip &> /dev/null; then
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echo "⚠️ pip not found. Required for installing Sling package"
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else
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echo "✅ pip found"
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fi
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# Check if ajv-cli is installed for schema validation
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if ! command -v ajv &> /dev/null; then
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echo "Installing ajv-cli for JSON schema validation..."
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if command -v npm &> /dev/null; then
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npm install -g ajv-cli
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else
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echo "⚠️ npm not found. Skipping schema validation."
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echo " Install Node.js and npm to validate server.json schema"
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exit 0
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fi
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fi
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# Download the MCP server schema
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echo "📥 Downloading MCP server schema..."
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curl -s -o /tmp/server-schema.json https://static.modelcontextprotocol.io/schemas/2025-09-16/server.schema.json
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# Validate the server.json file
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echo "✅ Validating server.json against schema..."
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if ajv validate -s /tmp/server-schema.json -d server.json; then
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echo "✅ server.json is valid!"
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else
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echo "❌ server.json validation failed!"
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exit 1
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fi
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# Test Sling installation and MCP command
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echo "🧪 Testing Sling installation..."
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if command -v sling &> /dev/null; then
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echo "✅ Sling CLI found"
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# Test MCP command
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echo "🧪 Testing MCP command..."
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if timeout 3s sling mcp --help &> /dev/null; then
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echo "✅ Sling MCP command works!"
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else
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echo "⚠️ Could not test 'sling mcp' command (this is normal if no help flag exists)"
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fi
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else
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echo "⚠️ Sling CLI not found. Testing pip installation..."
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# Try to install sling temporarily for testing
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if command -v pip3 &> /dev/null; then
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echo "🧪 Testing pip installation of sling package..."
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pip3 show sling &> /dev/null && echo "✅ Sling package is already installed" || echo "ℹ️ Sling package not installed (users will install via: pip install sling)"
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fi
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fi
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echo ""
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echo "🎉 Validation complete!"
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echo ""
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echo "📋 Installation instructions for users:"
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echo " pip install sling"
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echo " # Then the MCP server can be started with: sling mcp"

‎server.json‎

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{
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"$schema": "https://static.modelcontextprotocol.io/schemas/2025-09-16/server.schema.json",
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"name": "io.slingdata/sling-cli",
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"version": "1.4.24",
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"description": "Sling CLI MCP server for data pipeline and replication management",
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"homepage": "https://github.com/slingdata-io/sling",
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"sourceUrl": "https://github.com/slingdata-io/sling",
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"license": "MIT",
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"licensePath": "LICENSE",
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"vendor": {
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"name": "SlingData",
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"url": "https://slingdata.io"
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},
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"runtime": {
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"name": "python",
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"version": ">=3.8"
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},
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"commands": {
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"default": {
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"command": "sling",
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"args": ["mcp"]
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}
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},
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"installation": {
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"pip": {
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"package": "sling"
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}
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},
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"packages": [
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{
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"registryType": "pypi",
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"identifier": "sling",
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"version": "1.4.23",
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"transport": {
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"type": "stdio"
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}
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}
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],
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"categories": [
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"data-processing",
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"data-wrangling",
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"developer-tools"
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],
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"keywords": [
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"data",
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"query",
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"SQL",
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"pipeline",
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"replication",
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"etl",
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"database"
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]
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}

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