prompts/extend.md

Extend

• Runner: scripts/run_extend.py
• Result set: results/extend/<doc_id>.json
• API: Extend (https://api.extend.ai), x-extend-api-version: 2026-02-09

No natural-language prompt

Extend is a configured extraction product, not a chat model, so there is no free-text prompt to commit. The task is expressed entirely through an extractor created from the benchmark schema. The committed configuration is:

• baseProcessor: extraction_performance
• baseVersion: 4.1.1
• parseConfig.engine: parse_performance

Schema handling

schemas/<doc_id>.json is transformed into Extend's accepted schema subset (transform_schema / transform_node):

• strip $schema, examples, default, title, and any x_* keys
• primitives become nullable unions (["string", "null"]); enums gain a null member
• format: "date" becomes extend:type: "date"
• every object sets additionalProperties: false; arrays and nested objects recurse
• the reserved top-level property name id is renamed on the Extend side and mapped back in the output

Run procedure

Each run uploads the source file with a fresh file_id (the first /extract on a file id caches the parse output, so reusing it would silently serve a stale parse) and creates a uniquely named extractor so the current schema is always used. The runner then calls /extract, polls /extract_runs/<id> until PROCESSED, and maps the output back to the original field names. Cost is derived from reported credits at $0.0125/credit.

Run knobs (environment)

• EXTEND_API_KEY (required, for your own Extend workspace)