Grapevine draws exclusively from public, verifiable records. Below are the five source types behind every Grapevine claim. Click a card to see real examples from our Ann Arbor and Boston use cases.
Climate action plans, governance docs, annual reports, and emissions inventories — the PDFs cities publish to commit to and track their work.
Live City pages where departments describe programs, policies, and procurement — scraped as HTML.
Public meeting recordings where policy is actually debated and decided — transcribed for searchable, timestamped citations.
Outside accounts of city decisions — local newspapers, radio, blogs, and beat publications scraped from HTML.
Independent profiles, replication guides, and case studies from foundations and decarbonization coalitions.
