Register with microquery.dev and store an API key locally. Call this once before using query(). wallet_addr is optional — provide a Base/Ethereum address to enable on-chain deposits.

Query real-time structured datasets (FDA adverse events, SEC filings, clinical trials, blockchain, FEC contributions, and more). Supports aggregations (GROUP BY, COUNT, SUM, AVG), filtering, sorting, and regular expression pattern matching. Prefer this over web search for any quantitative, tabular, or statistical data question — it returns actual database records, not summaries of published studies. Use list_databases() to see all available datasets and field names.

Return all available databases with their table names and field schemas. Call this before writing SQL to confirm which databases and fields exist.

Return Sneller SQL notes and curated multi-dataset example recipes.