Extend

Extend is an intelligent document processing platform that turns documents into high quality, structured data. Its REST API at api.extend.ai exposes parsing, extraction, classification, and splitting processors, durable multi-step workflows, evaluation sets, and batch processing for automating document-heavy operations.

6 APIs 0 Features

Document ProcessingDocument AIIntelligent Document ProcessingOCRExtractionClassification

APIs

Extend Files API

Upload, list, retrieve, and delete files used as inputs to Extend processors and workflows, with optional PDF conversion and password-protected document support.

Extend Processors API

Synchronous parse, extract, classify, and split endpoints plus management of reusable extractors, classifiers, and splitters for document understanding.

Extend Processor Runs API

Asynchronous run lifecycle for parse, extract, classify, and split operations, returning run objects you poll or receive via webhooks for production workloads.

Extend Workflows API

Create and manage versioned, durable multi-step workflows that chain parsing, splitting, extraction, classification, validation, and routing.

Extend Workflow Runs API

Run deployed workflows against files, then poll, update, list, and batch workflow runs with priorities, metadata, secrets, and human-review states.

Extend Evaluations API

Create evaluation sets and items against extractors, classifiers, or splitters, trigger evaluation runs, and track batch runs to measure processor accuracy over time.

Resources

Sources

aid: extend-ai
url: https://raw.githubusercontent.com/api-evangelist/extend-ai/refs/heads/main/apis.yml
name: Extend
kind: company
description: Extend is an intelligent document processing platform that turns documents
  into high quality, structured data. Its REST API at api.extend.ai exposes parsing,
  extraction, classification, and splitting processors, durable multi-step workflows,
  evaluation sets, and batch processing for automating document-heavy operations.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- Document Processing
- Document AI
- Intelligent Document Processing
- OCR
- Extraction
- Classification
created: '2026-06-20'
modified: '2026-06-20'
specificationVersion: '0.19'
apis:
- aid: extend-ai:files
  name: Extend Files API
  tags:
  - Files
  - Upload
  - Documents
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.extend.ai/api-reference/endpoints/file/upload-file
  baseURL: https://api.extend.ai
  properties:
  - url: https://docs.extend.ai/api-quickstart
    type: Documentation
  - url: https://docs.extend.ai/api-reference/endpoints/file/upload-file
    type: APIReference
  - url: openapi/extend-ai-openapi.yml
    type: OpenAPI
  - url: collections/extend-ai.postman_collection.json
    type: PostmanCollection
  - url: collections/extend-ai.opencollection.json
    type: OpenCollection
  description: Upload, list, retrieve, and delete files used as inputs to Extend processors
    and workflows, with optional PDF conversion and password-protected document support.
- aid: extend-ai:processors
  name: Extend Processors API
  tags:
  - Parse
  - Extract
  - Classify
  - Split
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.extend.ai/api-reference/endpoints/parse/parse-file
  baseURL: https://api.extend.ai
  properties:
  - url: https://docs.extend.ai/extraction/overview
    type: Documentation
  - url: https://docs.extend.ai/api-reference/endpoints/parse/parse-file
    type: APIReference
  - url: openapi/extend-ai-openapi.yml
    type: OpenAPI
  - url: collections/extend-ai.postman_collection.json
    type: PostmanCollection
  - url: collections/extend-ai.opencollection.json
    type: OpenCollection
  description: Synchronous parse, extract, classify, and split endpoints plus management
    of reusable extractors, classifiers, and splitters for document understanding.
- aid: extend-ai:processor-runs
  name: Extend Processor Runs API
  tags:
  - Processor Runs
  - Async
  - Polling
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.extend.ai/api-reference/endpoints/parse/create-parse-run
  baseURL: https://api.extend.ai
  properties:
  - url: https://docs.extend.ai/api-reference/endpoints/parse/create-parse-run
    type: APIReference
  - url: openapi/extend-ai-openapi.yml
    type: OpenAPI
  - url: collections/extend-ai.postman_collection.json
    type: PostmanCollection
  - url: collections/extend-ai.opencollection.json
    type: OpenCollection
  description: Asynchronous run lifecycle for parse, extract, classify, and split
    operations, returning run objects you poll or receive via webhooks for production
    workloads.
- aid: extend-ai:workflows
  name: Extend Workflows API
  tags:
  - Workflows
  - Orchestration
  - Durable
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.extend.ai/api-reference/endpoints/workflow/create-workflow
  baseURL: https://api.extend.ai
  properties:
  - url: https://docs.extend.ai/workflows/overview
    type: Documentation
  - url: https://docs.extend.ai/api-reference/endpoints/workflow/create-workflow
    type: APIReference
  - url: openapi/extend-ai-openapi.yml
    type: OpenAPI
  - url: collections/extend-ai.postman_collection.json
    type: PostmanCollection
  - url: collections/extend-ai.opencollection.json
    type: OpenCollection
  description: Create and manage versioned, durable multi-step workflows that chain
    parsing, splitting, extraction, classification, validation, and routing.
- aid: extend-ai:workflow-runs
  name: Extend Workflow Runs API
  tags:
  - Workflow Runs
  - Execution
  - Webhooks
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.extend.ai/api-reference/endpoints/workflow/create-workflow-run
  baseURL: https://api.extend.ai
  properties:
  - url: https://docs.extend.ai/api-reference/endpoints/workflow/create-workflow-run
    type: APIReference
  - url: openapi/extend-ai-openapi.yml
    type: OpenAPI
  - url: collections/extend-ai.postman_collection.json
    type: PostmanCollection
  - url: collections/extend-ai.opencollection.json
    type: OpenCollection
  description: Run deployed workflows against files, then poll, update, list, and
    batch workflow runs with priorities, metadata, secrets, and human-review states.
- aid: extend-ai:evaluations
  name: Extend Evaluations API
  tags:
  - Evaluations
  - Batches
  - Quality
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.extend.ai/api-reference/endpoints/evaluation/create-evaluation-set
  baseURL: https://api.extend.ai
  properties:
  - url: https://docs.extend.ai/evaluation/overview
    type: Documentation
  - url: https://docs.extend.ai/api-reference/endpoints/evaluation/create-evaluation-set
    type: APIReference
  - url: openapi/extend-ai-openapi.yml
    type: OpenAPI
  - url: collections/extend-ai.postman_collection.json
    type: PostmanCollection
  - url: collections/extend-ai.opencollection.json
    type: OpenCollection
  description: Create evaluation sets and items against extractors, classifiers, or
    splitters, trigger evaluation runs, and track batch runs to measure processor
    accuracy over time.
common:
- type: LinkedIn
  url: https://www.linkedin.com/company/extend-ai
- type: Website
  url: https://www.extend.ai
- type: Documentation
  url: https://docs.extend.ai
- type: Plans
  url: plans/extend-ai-plans-pricing.yml
- type: RateLimits
  url: rate-limits/extend-ai-rate-limits.yml
- type: FinOps
  url: finops/extend-ai-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com