Powerdrill

Executes structured queries against Powerdrill datasets through the Model Context Protocol (MCP) server interface, translating natural language or structured requests into dataset-specific query operations. The MCP server acts as a bridge between AI clients (Claude, other LLMs) and Powerdrill's data layer, handling request routing, parameter validation, and response serialization through standardized MCP tool schemas.

Automatically discovers Powerdrill dataset schemas (fields, types, constraints) and registers them as callable MCP tools with proper type hints and documentation. The server introspects available datasets at startup or on-demand, generating MCP tool definitions that include field metadata, query capabilities, and parameter constraints, enabling LLMs to understand what data is queryable without hardcoded knowledge.

Translates natural language requests from LLMs into executable Powerdrill queries by mapping semantic intent (e.g., 'show me sales over $1000') to dataset-specific query parameters (filters, aggregations, projections). The MCP server leverages the LLM's own reasoning to interpret natural language in context of available dataset schemas, then constructs properly-typed query objects that Powerdrill's backend can execute.

Enables querying and combining data across multiple Powerdrill datasets through MCP tool invocations that support cross-dataset joins and aggregations. The server coordinates multiple dataset queries and performs client-side or server-side aggregation/joining based on Powerdrill's capabilities, allowing LLMs to reason about relationships between datasets without manual data pipeline construction.

Handles pagination and streaming of large query results through MCP tool invocations, allowing LLMs to iteratively fetch dataset rows without loading entire result sets into memory. The server implements cursor-based or offset-based pagination, enabling analysis of datasets larger than typical context windows through multi-turn interactions where the LLM requests subsequent pages as needed.

Caches query results in memory or persistent storage to avoid redundant Powerdrill API calls when the same query is executed multiple times within a session or across sessions. The server implements cache key generation from query parameters, TTL-based expiration, and optional persistence to disk, enabling faster response times for repeated analyses and reducing load on the Powerdrill backend.

Validates query parameters before execution and provides detailed error messages when queries fail, helping LLMs understand why a query was invalid and how to correct it. The server implements schema validation, type checking, and constraint verification, returning structured error responses that include the specific validation failure, affected fields, and suggested corrections.

Enforces Powerdrill dataset access controls at the MCP server level, ensuring that only authorized queries are executed based on user credentials and dataset permissions. The server validates user identity, checks dataset-level and field-level access permissions, and prevents unauthorized data access before queries reach the Powerdrill backend.

Monitors query execution performance (latency, data scanned, rows returned) and provides optimization suggestions to LLMs when queries are slow or inefficient. The server tracks metrics like query duration, result set size, and filter selectivity, then recommends optimizations such as adding filters, using aggregations instead of raw data, or breaking large queries into smaller chunks.