NL Analytics MCP Server for Apache Druid

# Streamable HTTP (Docker) Examples This folder contains Docker-focused examples for running the Druid MCP Server with the Streamable HTTP transport (MCP 2025-06-18). Clients connect over HTTP to a single /mcp endpoint. We focus on environment variable configuration. No Java/JAR commands are required. ## Quick use with MCP client Point your MCP client to this config file: - [mcpservers-streamable-http.json](mcpservers-streamable-http.json) This tells your client to connect to the Streamable HTTP endpoint. You must run the server container separately (see below). ### Optional: Enable OAuth2 protection 1) Start the server with OAuth2 enabled: ```bash docker run --rm -p 8080:8080 \ -e SPRING_PROFILES_ACTIVE=http \ -e DRUID_ROUTER_URL=http://host.docker.internal:8888 \ -e DRUID_COORDINATOR_URL=http://host.docker.internal:8081 \ -e DRUID_AUTH_USERNAME=admin \ -e DRUID_AUTH_PASSWORD=password \ iunera/druid-mcp-server:1.6.0 ``` 2) Obtain a token using client-credentials grant (default client: `oidc-client` / `secret`): ```bash export MCP_OAUTH_TOKEN=$(curl -s -XPOST "http://localhost:8080/oauth2/token" \ --data grant_type=client_credentials \ --user "oidc-client:secret" | jq -r ".access_token") ``` The provided `mcpservers-streamable-http.json` will forward the token using the `Authorization: Bearer` header. Streamable HTTP endpoint will be available at: - http://localhost:8080/mcp Adjust -p 8080:8080 if you need a different port.