For AI agents: a documentation index is available at the root level at /llms.txt and /llms-full.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.
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DocumentationAPI ReferenceModel VersioningChangelog
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May 20, 2026
May 20, 2026

Generate extractor JSON schemas via the REST API when you create an extractor

For API version 2026-02-09, you can optionally pass generate on POST /extractors instead of supplying config. Provide one to five sample inputs as Extend file IDs or file URLs and Extend will generate a JSON extraction schema from those examples and return the extractor with the schema applied. Optionally add generate.instructions (up to 2,500 characters) to provide additional context about the document type or requirements for how values should be extracted. You cannot combine generate with cloneExtractorId or config.

  • generate.files: 1–5 entries, each a file { id } or { url }.
  • generate.instructions: optional free-text guidance to steer schema generation.
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