> ## Documentation Index
> Fetch the complete documentation index at: https://docs.reducto.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Glossary

> Key terms and concepts in Reducto

## A

<Accordion title="Agentic Mode">
  An enhancement that uses vision language models (VLMs) to review and correct parsing output. Available for three scopes: `text` (handwritten content, signatures), `table` (complex table structures), and `figure` (charts and diagrams). Adds latency and credits but improves accuracy for difficult documents. See [Agentic Modes](/configs/parse/agentic-modes).
</Accordion>

<Accordion title="Async Endpoint">
  API endpoints that return immediately with a `job_id` instead of waiting for processing to complete. Examples: `/parse_async`, `/extract_async`. Use these for large documents, batch processing, or when you want webhook notifications. See [Async Processing](/workflows/async-overview).
</Accordion>

## B

<Accordion title="Bounding Box (bbox)">
  Coordinates describing where a block appears on a page. All values are normalized to \[0, 1] relative to page dimensions. Fields: `left`, `top`, `width`, `height`, `page`, `original_page`. See [Response Format](/parse/response-format#bounding-box-coordinates).
</Accordion>

<Accordion title="Block">
  The atomic content element in Reducto's output. Every paragraph, table, header, figure, list item, etc. is a separate block with its own type, content, bounding box, and confidence score. Blocks are grouped into chunks.
</Accordion>

## C

<Accordion title="Chunk">
  A group of related blocks returned by Parse. Chunking mode determines how blocks are grouped. Each chunk has `content` (raw Markdown), `embed` (optimized for vector embeddings), and `blocks` (individual elements with metadata). See [Chunking Methods](/configs/parse/chunking-methods).
</Accordion>

<Accordion title="Confidence Score">
  A measure of parsing accuracy. String confidence is `"high"` or `"low"`. Granular confidence provides numeric scores (0-1) in `parse_confidence` and `extract_confidence` fields.
</Accordion>

<Accordion title="Content Field">
  The `content` field in a chunk contains the raw Markdown representation of extracted text. Tables appear in their original format (HTML/Markdown). Use for display purposes.
</Accordion>

<Accordion title="Credits">
  The billing unit for Reducto API usage. Different endpoints and configurations consume different credit amounts. See [Credit Usage](/reference/credit-usage).
</Accordion>

## E

<Accordion title="Embed Field">
  The `embed` field in a chunk is optimized for vector embeddings. When `embedding_optimized: true`, tables are converted to natural language summaries that embed better than raw Markdown. Use for vector databases and semantic search.
</Accordion>

<Accordion title="Extract">
  The `/extract` endpoint pulls structured data from documents according to a JSON schema you define. Returns typed fields with values and citations. Different from Parse, which returns the full document content.
</Accordion>

## F

<Accordion title="Force URL Result">
  Setting `force_url_result: true` makes the API always return results as a URL pointing to JSON, rather than inline in the response. Useful for consistent handling or very large documents. See [Processing Settings](/configs/parse/ocr-settings#force-url-result).
</Accordion>

## J

<Accordion title="Job ID">
  A unique identifier returned when you submit an async request or complete any API call. Format: UUID like `7600c8c5-a52f-49d2-8a7d-d75d1b51e141`. Used to retrieve results, check status, or chain endpoints.
</Accordion>

<Accordion title="jobid:// URL">
  A special URL format (`jobid://abc123`) that lets you reference a previously parsed document without re-uploading or re-parsing it. Use with Extract or Split to avoid duplicate processing.
</Accordion>

## O

<Accordion title="OCR System">
  The text extraction engine. `standard` (default) is the best multilingual OCR system. `legacy` only supports Germanic languages and exists for backwards compatibility. See [OCR Settings](/configs/parse/ocr-settings).
</Accordion>

## P

<Accordion title="Parse">
  The `/parse` endpoint extracts text, tables, figures, and structure from documents. Returns chunks and blocks with positional metadata. The foundation for most Reducto workflows.
</Accordion>

<Accordion title="Persist Results">
  Setting `persist_results: true` stores job results indefinitely (requires Studio). Without this, results are deleted after 12 hours per the zero data retention (ZDR) policy.
</Accordion>

<Accordion title="Pipeline">
  A saved configuration in Reducto Studio that bundles parsing, extraction, or other operations into a single API call. Call via `/pipeline` endpoint with a `pipeline_id`.
</Accordion>

<Accordion title="Priority">
  Async jobs can be submitted with `priority: true` to process ahead of non-priority async jobs. Sync requests are always prioritized over async.
</Accordion>

## R

<Accordion title="reducto:// URL">
  A special URL format (`reducto://abc123`) returned by the `/upload` endpoint. Use this to reference uploaded files in subsequent API calls without re-uploading.
</Accordion>

## S

<Accordion title="Schema">
  A JSON Schema definition used with the Extract endpoint to specify what data to pull from documents. Defines field names, types, and structure.
</Accordion>

<Accordion title="Split">
  The `/split` endpoint divides documents into logical sections based on natural language descriptions you provide. Returns page ranges for each section with confidence scores.
</Accordion>

<Accordion title="Studio">
  [Reducto Studio](https://studio.reducto.ai/) is the web interface for configuring pipelines, viewing results, managing API keys, and monitoring usage. Pipelines created in Studio can be called via the API.
</Accordion>

<Accordion title="Sync Endpoint">
  API endpoints that block until processing completes and return the full result. Examples: `/parse`, `/extract`. Best for interactive applications with smaller documents.
</Accordion>

## U

<Accordion title="Upload">
  The `/upload` endpoint accepts direct file uploads and returns a `reducto://` URL for use in other API calls. Use for local files rather than URLs.
</Accordion>

<Accordion title="URL Result Type">
  When a Parse response is too large for inline delivery, `result.type` is `"url"` and you must fetch the content from `result.url`. The threshold is approximately 6MB response size.
</Accordion>

## Z

<Accordion title="Zero Data Retention (ZDR)">
  Reducto's default data policy. Uploaded documents and job results are deleted within 12 hours. Enable `persist_results: true` to keep results longer (requires Studio opt-in).
</Accordion>