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 6 API contracts indexed on the APIs.io network, including Files API, Health API, Tasks API, and 3 more. Tagged areas include Document Parsing, OCR, Chunking, RAG, and Document Intelligence.

The Chunkr catalog on APIs.io includes 1 Spectral governance ruleset.

Chunkr’s developer surface includes authentication, documentation, and 10 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

31.6/100 thin ▬ flat Agent 21/100 agent aware Front door AI 3/6 light Heartbeat 48/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Document Parsing OCR Chunking RAG Document Intelligence

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 31.6/100 · thin

Contract Quality 10.0 / 19

Developer Ergonomics 4.5 / 15

Access Clarity 2.4 / 15

Operational Transparency 1.0 / 10

Contract Governance 1.2 / 9

Discoverability 5.0 / 8

Regulatory Posture 2.5 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 21/100 · 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 0 / 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

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

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.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

8 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 15.8 — up to +16.8 composite points
Developer Ergonomics scores 29.8 — up to +14.0 composite points
Contract Quality scores 53.3 — up to +11.7 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/chunkr-ai/apis.yml: open an issue on github.com/api-evangelist/chunkr-ai to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
RPA and Document AI (RPA marketplaces, intelligent document processing)	undeclared	-	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 6

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.

Chunkr Chunkr API

The Chunkr API API from Chunkr — 0 operation(s) for chunkr api.

Chunkr Extras API

The Extras API from Chunkr — 1 operation(s) for extras.

Chunkr Webhook API

Endpoints for managing webhooks

Open Collections 4

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

Chunkr Files API

OPEN COLLECTION

Chunkr Files Health API

OPEN COLLECTION

Chunkr Files Tasks API

OPEN COLLECTION

Chunkr API

OPEN COLLECTION

Chunkr API pricing

Not yet checked against Chunkr's own pricing page. Compiled by API Evangelist on 2026-06-20 from chunkr.ai/pricing; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free free	Free
Starter subscription	—
Dev subscription	—
Growth subscription	—
Enterprise enterprise	—
Self-Hosted (Open Source) free	—

Plan details, limits and sources →

Rate limits

Monthly Page Allowance: see plan tier pages
Monthly Credit Allowance: see plan tier credits
Concurrent Tasks: see provider documentation tasks

Compiled by API Evangelist, not yet checked against Chunkr's documentation. All 4 limits →

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

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Chunkr

SLA

FinOps 1

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

Chunkr Ai Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Chunkr API Rules

71 rules · 62 errors 3 warnings 6 info

SPECTRAL

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 3

The organization behind the API

BlogRSS

BlogRSS

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
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/chunkr-ai.png
x-docs-platform: mintlify
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-09-21
tags:
- Document Parsing
- OCR
- Chunking
- RAG
- Document Intelligence
created: '2026-06-20'
modified: '2026-10-06'
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
- aid: chunkr-ai:chunkr-ai-chunkr-api-api
  name: Chunkr Chunkr API
  description: The Chunkr API API from Chunkr — 0 operation(s) for chunkr api.
  humanURL: https://docs.chunkr.ai/api-references/tasks/create-parse-task
  baseURL: https://api.chunkr.ai
  tags:
  - Chunkr API
  properties:
  - type: OpenAPI
    url: openapi/chunkr-ai-chunkr-api-api-openapi.yml
- aid: chunkr-ai:chunkr-ai-extras-api
  name: Chunkr Extras API
  description: The Extras API from Chunkr — 1 operation(s) for extras.
  humanURL: https://docs.chunkr.ai/api-references/tasks/create-parse-task
  baseURL: https://api.chunkr.ai
  tags:
  - extras
  tags_raw:
  - Extras
  properties:
  - type: OpenAPI
    url: openapi/chunkr-ai-extras-api-openapi.yml
- aid: chunkr-ai:chunkr-ai-webhook-api
  name: Chunkr Webhook API
  description: Endpoints for managing webhooks
  humanURL: https://docs.chunkr.ai/api-references/tasks/create-parse-task
  baseURL: https://api.chunkr.ai
  tags:
  - Webhook
  properties:
  - type: OpenAPI
    url: openapi/chunkr-ai-webhook-api-openapi.yml
common:
- url: https://chunkr.ai/rss.xml
  type: BlogRSS
- 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

Chunkr API — frequently asked questions

Does Chunkr have an API?

Yes. APIs.io lists 6 APIs from Chunkr, including Chunkr Files API, Chunkr Health API and Chunkr Tasks API, and 3 more.

Is there an OpenAPI specification for the Chunkr API?

Yes. APIs.io indexes 6 OpenAPI specifications for Chunkr, each linked for download from this page.

How do I authenticate with the Chunkr API?

Chunkr uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Chunkr Ai Authentication.

How much does the Chunkr API cost?

APIs.io lists 6 pricing plans for Chunkr, with each plan's price, limits and inclusions under Pricing on this page.

Is the Chunkr API ready for AI agents?

Chunkr has a Kin Score of 31.6 out of 100 (thin) and an Agent Readiness score of 21.3 (agent-aware), scored by API Evangelist on 2026-11-06.

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