Osf Data Marketplace

This connects Claude to a marketplace for verified public domain datasets from US government and scientific sources, charging per record via USDC cryptocurrency on the x402 protocol. You'd reach for this when you need programmatic access to authoritative datasets with built-in payment rails, like census data, climate measurements, or research publications that you want to query without bulk downloading. The streamable HTTP transport suggests it handles large dataset responses efficiently. The pay-per-record model makes sense for exploratory data analysis where you don't know upfront how much data you'll need, though the crypto payment requirement means you'll need a wallet setup before Claude can actually fetch anything.