┌──────────────────┐
  data engineer ──▶ │  LLM client      │   Claude Code / Claude Desktop / any MCP client
                    │  + skills        │   ← skills/ supply the method
                    └────────┬─────────┘
                             │ MCP (stdio or streamable-http)
                    ┌────────▼─────────┐
                    │  this server     │   17 tools, 2 prompts
                    └────────┬─────────┘
                             │ HTTP  GET /api/v1/...
                    ┌────────▼─────────┐
                    │ Spark History    │   your existing one, or the bundled demo
                    │ Server           │
                    └────────┬─────────┘
                             │ reads
                    ┌────────▼─────────┐
                    │ event logs       │   s3://…, hdfs://…, file://…
                    └──────────────────┘

git clone https://github.com/ukonduru91/spark-history-mcp.git
cd spark-history-mcp
docker compose up --build

./start_local_spark_history.sh          # macOS / Linux / Git Bash
.\start_local_spark_history.ps1         # Windows PowerShell

git clone https://github.com/ukonduru91/spark-history-mcp.git
cd spark-history-mcp
npm install
npm run build
npm start

node scripts/mcp-cli.mjs list-tools
node scripts/mcp-cli.mjs call list_applications '{"limit": 5}'

export SHS_SERVERS__LOCAL__URL=http://spark-history.internal:18080
export SHS_SERVERS__LOCAL__DEFAULT=true

servers:
  prod:
    url: "https://spark-history.company.com:18080"
    default: true          # used when a tool call omits `server`
    verify_ssl: true
    ssl_ca_cert: "/etc/ssl/custom-ca/ca-bundle.pem"   # private CA
    timeout: 30            # seconds
    auth:
      username: admin
      password: ${SPARK_PASSWORD}   # see the note below
      # token: <bearer token>       # or a bearer token instead

  staging:
    url: "https://spark-history-staging.company.com:18080"

ssh -D 8157 -N user@bastion    # SOCKS5 proxy on :8157

{
  "mcpServers": {
    "spark-history": {
      "command": "node",
      "args": ["/absolute/path/to/spark-history-mcp/dist/index.js"],
      "env": {
        "SHS_MCP__TRANSPORT": "stdio",
        "SHS_SERVERS__PROD__URL": "https://spark-history.company.com:18080",
        "SHS_SERVERS__PROD__DEFAULT": "true"
      }
    }
  }
}

claude mcp add spark-history \
  --env SHS_MCP__TRANSPORT=stdio \
  --env SHS_SERVERS__PROD__URL=https://spark-history.company.com:18080 \
  --env SHS_SERVERS__PROD__DEFAULT=true \
  -- node /absolute/path/to/spark-history-mcp/dist/index.js

SHS_MCP__TRANSPORT=streamable-http SHS_MCP__ADDRESS=0.0.0.0 npm start

mcp:
  transport_security:
    enable_dns_rebinding_protection: true
    allowed_hosts: ["spark-mcp.internal:*"]
    allowed_origins: ["https://spark-mcp.internal"]

# per project
mkdir -p .claude/skills
cp -r skills/spark-rca skills/spark-optimization .claude/skills/

# or for every project
mkdir -p ~/.claude/skills
cp -r skills/spark-rca skills/spark-optimization ~/.claude/skills/

src/
  index.ts                 CLI entry, transport selection (stdio | streamable-http)
  config/config.ts         YAML + .env + SHS_* resolution and precedence
  core/
    app.ts                 MCP request handlers; maps results to content blocks
    validation.ts          pydantic-compatible argument validation and messages
    json.ts                Python-compatible JSON rendering
    pyfloat.ts             int/float fidelity across the JSON round-trip
    pyrepr.ts              Python repr() for validation messages
    errors.ts              error text shaping
  api/
    httpClient.ts          HTTP transport, ApiException taxonomy, auth, TLS, SOCKS
    sparkClient.ts         Spark REST facade: pagination, attempts, status filters
  models/
    generated.ts           model shapes, generated from the upstream OpenAPI models
    deserialize.ts         from_dict / model_dump equivalents
    mcpTypes.ts            curated LLM-facing output models
  tools/tools.ts           the 17 tools
  prompts/prompts.ts       the 2 prompts
  schemas/generated.ts     tool + prompt catalogue (names, descriptions, schemas)

docker build -t spark-history-mcp .
docker run -p 18888:18888 \
  -e SHS_SERVERS__PROD__URL=https://spark-history.company.com:18080 \
  -e SHS_SERVERS__PROD__DEFAULT=true \
  -e SHS_MCP__ADDRESS=0.0.0.0 \
  spark-history-mcp

env:
  - name: SHS_MCP__TRANSPORT
    value: streamable-http
  - name: SHS_MCP__ADDRESS
    value: "0.0.0.0"
  - name: SHS_SERVERS__PROD__URL
    value: http://spark-history-server.spark.svc.cluster.local:18080
  - name: SHS_SERVERS__PROD__DEFAULT
    value: "true"
  - name: SHS_SERVERS__PROD__AUTH__TOKEN
    valueFrom:
      secretKeyRef: { name: spark-history-auth, key: token }

npm install
npm run build        # compile to dist/
npm run dev          # run from source, no build step
npm test             # unit tests
npm run typecheck    # tsc --noEmit