Contact
Press & research inquiries: [email protected]
Corrections: same address — see the corrections policy.
Operator: Enerlio GmbH — full legal details in the Impressum.
Developers & agent builders: no key, no signup — start at the quickstart.
FACTANKER Pro, bulk feeds and data licences: [email protected] — see the five Pro products and prices. We answer within one working day; early access is set up by hand until the payment page is live.
Crawler operators: [email protected] (also named in robots.txt).
Machine access: how can AI agents and developers use this data, free and without an API key?
Every figure shown here about Contact can also be queried live: FACTANKER runs an MCP server at https://factanker.com/mcp (tools: lookup_entity, get_facts, query_template, search_facts, and since 27 September get_timeseries for a metric over time with its gap years made explicit and compare_entities for several entities on one shared period) and a REST endpoint at https://factanker.com/api/get_facts. Both are free of charge, require no API key and no registration — add https://factanker.com/mcp as a connector in Claude, ChatGPT or Copilot. Every answer carries its source document and a citation reference. Setup: /quickstart.
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