Unauthenticated preview endpoint

A key-free API route that returns real records without registration - exemplified by Comtrade's /public/v1/preview/ path and the key-free Eurostat, OECD and World Bank endpoints - standing in contrast to sibling final-data routes that demand credentials.

In this catalog it appears concretely: - UN Comtrade Plus TradeFlow long_description — "The site exposes a free unauthenticated public preview endpoint at comtradeapi.un.org/public/v1/preview/". - UN Comtrade Plus TradeFlow acquisition_notes — "Free path: GET ... No key needed for preview". - Eurostat Data Browser acquisition_notes — "fetched key-free in one per_page=20000 API call".

Access method sets your maintenance bill. Delivery routes change, layouts drift and scrapers rot quietly; whoever operates your pipeline inherits all of it, which is why access should be priced alongside the license itself.

The failure mode is concrete: a source can carry the Unauthenticated preview endpoint label while differing from what you need on exactly the dimension that matters — The site exposes a free unauthenticated public preview endpoint at comtradeapi.un.org/public/v1/preview/. Comparing two sources on that line usually settles the choice faster than any feature matrix.

You rarely have to take a vendor's word for it. 82.4% of the 1,744 datasets Datadory catalogs are free to access, and UN Comtrade Plus TradeFlow long_description lets you inspect the real artifact before any budget is committed.

Treat every claim of this attribute as testable:

1. Open UN Comtrade Plus TradeFlow long_description and confirm its record — "The site exposes a free unauthenticated public preview endpoint at comtradeapi.un.org/public/v1/preview/" — against the files you actually receive. 2. Open UN Comtrade Plus TradeFlow acquisition_notes and confirm its record — "Free path: GET ... No key needed for preview" — against the files you actually receive. 3. Open Eurostat Data Browser acquisition_notes and confirm its record — "fetched key-free in one per_page=20000 API call" — against the files you actually receive. 4. Pin down update cadence in writing.

Adjacent concepts worth reading next: - census data integration key required - ocp apim subscription key - SDMX REST API - World Bank indicator query parameters