Chunkr

Chunkr is an open-source document intelligence platform that turns complex documents (PDF, Office, images) into RAG- and LLM-ready data. The Chunkr Cloud API at api.chunkr.ai performs layout analysis, OCR, segmentation, and chunking, and runs proprietary in-house vision models; the AGPL-3.0 open-source release (lumina-ai-inc/chunkr) can be self-hosted via Docker.

Chunkr publishes 3 APIs on the APIs.io network: Files API, Health API, and Tasks API. Tagged areas include Document Parsing, OCR, Chunking, RAG, and Document Intelligence.

Chunkr’s developer surface includes authentication, documentation, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub

38.8/100 thin ▬ flat Agent 24/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemiumSelf serve⚡ Free to try

1 APIs

Document Parsing OCR Chunking RAG Document Intelligence

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 38.8/100 · thin

Contract Quality 11.5 / 23

Developer Ergonomics 5.4 / 18

Access Clarity 8.5 / 18

Operational Transparency 4.0 / 12

Contract Governance 0.0 / 11

Discoverability 6.2 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 24/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/chunkr-ai: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 3

Individual APIs this provider publishes, each with its own machine-readable definition.

Chunkr Files API

Upload and manage files referenced by tasks.

Chunkr Health API

Liveness and metadata utilities.

Chunkr Tasks API

Create, poll, list, cancel, and delete parse and extract tasks.

Open Collections 5

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Chunkr Files API

OPEN COLLECTION

Chunkr Files Health API

OPEN COLLECTION

Chunkr Files Tasks API

OPEN COLLECTION

Chunkr API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Chunkr Ai Plans Pricing

6 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Chunkr Ai Rate Limits

4 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Chunkr Ai Finops

FINOPS

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Chunkr Ai Authentication

apiKey · 1 scheme

SECURITY

Chunkr Ai Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Chunkr Ai Trust Center

SOC 2, HIPAA

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Chunkr Ai Agentic Access

16 operations · 6 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

TrustCenter

TrustCenter

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 2

The organization behind the API

LinkedIn

Website

Website

Source (apis.yml)

aid: chunkr-ai
url: https://raw.githubusercontent.com/api-evangelist/chunkr-ai/refs/heads/main/apis.yml
name: Chunkr
kind: company
description: Chunkr is an open-source document intelligence platform that turns complex documents (PDF, Office, images) into
  RAG- and LLM-ready data. The Chunkr Cloud API at api.chunkr.ai performs layout analysis, OCR, segmentation, and chunking,
  and runs proprietary in-house vision models; the AGPL-3.0 open-source release (lumina-ai-inc/chunkr) can be self-hosted
  via Docker.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/chunkr-ai.png
tags:
- Document Parsing
- OCR
- Chunking
- RAG
- Document Intelligence
created: '2026-06-20'
modified: '2026-06-20'
specificationVersion: '0.23'
apis:
- aid: chunkr-ai:chunkr-ai-files-api
  name: Chunkr Files API
  description: Upload and manage files referenced by tasks.
  humanURL: https://docs.chunkr.ai/api-references/tasks/create-parse-task
  baseURL: https://api.chunkr.ai
  tags:
  - File
  tags_raw:
  - Files
  properties:
  - type: OpenAPI
    url: openapi/chunkr-ai-files-api-openapi.yml
  - type: Documentation
    url: https://docs.chunkr.ai/pages/get-started/welcome
  - type: APIReference
    url: https://docs.chunkr.ai/api-references/tasks/create-parse-task
  - type: PostmanCollection
    url: collections/chunkr-ai.postman_collection.json
  - type: OpenCollection
    url: collections/chunkr-ai.opencollection.json
  - type: Documentation
    url: https://docs.chunkr.ai/api-references/tasks/create-extract-task
  - type: APIReference
    url: https://docs.chunkr.ai/api-references/tasks/create-extract-task
  - type: Documentation
    url: https://docs.chunkr.ai/api-references/tasks/get-task
  - type: APIReference
    url: https://docs.chunkr.ai/api-references/tasks/get-task
  - type: Documentation
    url: https://docs.chunkr.ai/api-references/files/upload-a-file
  - type: APIReference
    url: https://docs.chunkr.ai/api-references/files/upload-a-file
  - type: Documentation
    url: https://docs.chunkr.ai/api-references/health/health-check
  - type: APIReference
    url: https://docs.chunkr.ai/api-references/health/health-check
- aid: chunkr-ai:chunkr-ai-health-api
  name: Chunkr Health API
  description: Liveness and metadata utilities.
  humanURL: https://docs.chunkr.ai/api-references/tasks/create-parse-task
  baseURL: https://api.chunkr.ai
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/chunkr-ai-health-api-openapi.yml
  - type: Documentation
    url: https://docs.chunkr.ai/pages/get-started/welcome
  - type: APIReference
    url: https://docs.chunkr.ai/api-references/tasks/create-parse-task
  - type: PostmanCollection
    url: collections/chunkr-ai.postman_collection.json
  - type: OpenCollection
    url: collections/chunkr-ai.opencollection.json
  - type: Documentation
    url: https://docs.chunkr.ai/api-references/tasks/create-extract-task
  - type: APIReference
    url: https://docs.chunkr.ai/api-references/tasks/create-extract-task
  - type: Documentation
    url: https://docs.chunkr.ai/api-references/tasks/get-task
  - type: APIReference
    url: https://docs.chunkr.ai/api-references/tasks/get-task
  - type: Documentation
    url: https://docs.chunkr.ai/api-references/files/upload-a-file
  - type: APIReference
    url: https://docs.chunkr.ai/api-references/files/upload-a-file
  - type: Documentation
    url: https://docs.chunkr.ai/api-references/health/health-check
  - type: APIReference
    url: https://docs.chunkr.ai/api-references/health/health-check
- aid: chunkr-ai:chunkr-ai-tasks-api
  name: Chunkr Tasks API
  description: Create, poll, list, cancel, and delete parse and extract tasks.
  humanURL: https://docs.chunkr.ai/api-references/tasks/create-parse-task
  baseURL: https://api.chunkr.ai
  tags:
  - Task
  tags_raw:
  - Tasks
  properties:
  - type: OpenAPI
    url: openapi/chunkr-ai-tasks-api-openapi.yml
  - type: Documentation
    url: https://docs.chunkr.ai/pages/get-started/welcome
  - type: APIReference
    url: https://docs.chunkr.ai/api-references/tasks/create-parse-task
  - type: PostmanCollection
    url: collections/chunkr-ai.postman_collection.json
  - type: OpenCollection
    url: collections/chunkr-ai.opencollection.json
  - type: Documentation
    url: https://docs.chunkr.ai/api-references/tasks/create-extract-task
  - type: APIReference
    url: https://docs.chunkr.ai/api-references/tasks/create-extract-task
  - type: Documentation
    url: https://docs.chunkr.ai/api-references/tasks/get-task
  - type: APIReference
    url: https://docs.chunkr.ai/api-references/tasks/get-task
  - type: Documentation
    url: https://docs.chunkr.ai/api-references/files/upload-a-file
  - type: APIReference
    url: https://docs.chunkr.ai/api-references/files/upload-a-file
  - type: Documentation
    url: https://docs.chunkr.ai/api-references/health/health-check
  - type: APIReference
    url: https://docs.chunkr.ai/api-references/health/health-check
common:
- type: AgenticAccess
  url: agentic-access/chunkr-ai-agentic-access.yml
- type: TrustCenter
  url: security/chunkr-ai-trust-center.yml
- type: DomainSecurity
  url: security/chunkr-ai-domain-security.yml
- type: Authentication
  url: authentication/chunkr-ai-authentication.yml
- type: GitHubOrganization
  url: https://github.com/lumina-ai-inc
- type: LinkedIn
  url: https://www.linkedin.com/company/chunkr
- type: Website
  url: https://chunkr.ai
- type: Documentation
  url: https://docs.chunkr.ai
- type: Plans
  url: plans/chunkr-ai-plans-pricing.yml
- type: RateLimits
  url: rate-limits/chunkr-ai-rate-limits.yml
- type: FinOps
  url: finops/chunkr-ai-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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