Apache POI

Apache POI is a Java API for manipulating various file formats based upon the Office Open XML standards (OOXML) and Microsoft's OLE2 Compound Document format (OLE2). It supports reading and writing Excel, Word, PowerPoint, Visio, and Outlook files.

Apache POI publishes 4 API contracts indexed on the APIs.io network, including Conversion API, Excel API, PowerPoint API, and 1 more. Tagged areas include Document Processing, Excel, Java, Microsoft Office, and PowerPoint.

The Apache POI catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

Apache POI’s developer surface includes documentation and 11 more developer resources.

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26.8/100 thin ▬ flat Agent 17/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemium

1 published contract 7 Features 4 Use Cases

Document Processing Excel Java Microsoft Office PowerPoint Word Apache Open Source

Kin Score

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

Composite quality — 26.8/100 · thin

Contract Quality 9.1 / 19

Developer Ergonomics 1.4 / 15

Access Clarity 1.2 / 15

Operational Transparency 2.1 / 10

Contract Governance 2.5 / 9

Discoverability 4.3 / 8

Regulatory Posture 2.5 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 17/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 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 0 / 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
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
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

11 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 7.9 — up to +18.4 composite points
Developer Ergonomics scores 9.5 — up to +18.1 composite points
Contract Quality scores 48.4 — up to +12.9 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/apache-poi/apis.yml: open an issue on github.com/api-evangelist/apache-poi 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	-	-	-

OPEN COLLECTION

Apache POI API pricing

Not yet checked against Apache POI's own pricing page. Compiled by API Evangelist on 2026-05-04; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free freemium	Free
Professional paid	Free
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Free Tier Default: 10 requests per minute
Free Tier Monthly Quota: 1000 requests per month
Professional Tier Default: 100 requests per minute

Compiled by API Evangelist, not yet checked against Apache POI's documentation. All 5 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Apache Poi Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Apache Poi Rate Limits

5 limits

RATE LIMITS

Service Levels 1

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

Apache POI

SLA

FinOps 1

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

Apache Poi Finops

FINOPS

Features 7

Notable capabilities this provider offers.

Excel HSSF/XSSF

Read and write Excel files in legacy XLS (HSSF) and modern XLSX (XSSF) formats

Word HWPF/XWPF

Read and write Word documents in legacy DOC (HWPF) and modern DOCX (XWPF) formats

PowerPoint HSLF/XSLF

Create and manipulate PowerPoint presentations in PPT and PPTX formats

Formula Evaluation

Evaluate Excel formulas and compute cell values programmatically

Streaming API

Low-memory streaming API (SXSSF) for writing large Excel files

Chart Support

Create and modify charts in Excel workbooks and PowerPoint slides

Digital Signatures

Sign Office documents with digital signatures using OOXML standards

Scroll for all 7

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Apache Poi Context

16 classes · 31 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

Apache POI — jsonschema rules

5 rules · 3 warnings 2 info

SPECTRAL

Apache POI API Rules

7 rules · 1 errors 5 warnings 1 info

SPECTRAL

5 properties

JSON STRUCTURE

Scroll for all 16

2 fields

EXAMPLE

Apache Poi Workbook Request Example

3 fields

EXAMPLE

Scroll for all 16

Security Posture 2

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

Apache Poi Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Apache Poi Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

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

Apache Poi Agentic Access

11 operations · 5 acting

AGENTIC

Use Cases 4

What developers build with this provider.

Report Generation

Generate Excel and Word reports programmatically from application data

Data Import/Export

Import data from Excel spreadsheets and export results back

Template Processing

Fill Office document templates with dynamic data

Document Conversion

Convert between legacy Office formats and modern OOXML formats

Integrations 4

Pre-built integrations with other platforms and tools.

Apache Tika

POI is used by Tika for Office document text extraction

Spring Framework

Integrate POI with Spring Boot for web-based document generation

Maven Central

Available as org.apache.poi artifacts on Maven Central

Apache Commons

Uses Commons Collections and Commons Math for data structures

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

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

SpectralRules

SpectralRules

Vocabulary

Vocabulary

JSONLD

JSONLD

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

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 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: apache-poi
name: Apache POI
description: Apache POI is a Java API for manipulating various file formats based upon the Office Open XML standards (OOXML)
  and Microsoft's OLE2 Compound Document format (OLE2). It supports reading and writing Excel, Word, PowerPoint, Visio, and
  Outlook files.
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/apache-poi.png
tags:
- Document Processing
- Excel
- Java
- Microsoft Office
- PowerPoint
- Word
- Apache
- Open Source
tags_raw:
- Document Processing
- Excel
- Java
- Microsoft Office
- PowerPoint
- Word
- Apache
- Open Source
- Open-Source
created: '2026-03-16'
modified: '2026-09-16'
url: https://raw.githubusercontent.com/api-evangelist/apache-poi/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- aid: apache-poi:apache-poi-conversion-api
  name: Apache POI Conversion API
  description: The Conversion API from Apache POI — 1 operation(s) for conversion.
  humanURL: https://poi.apache.org/components/index.html
  tags:
  - Conversion
  properties:
  - type: OpenAPI
    url: openapi/apache-poi-conversion-api-openapi.yml
  - type: Documentation
    url: https://poi.apache.org/components/index.html
  - type: Documentation
    url: https://poi.apache.org/components/
- aid: apache-poi:apache-poi-excel-api
  name: Apache POI Excel API
  description: The Excel API from Apache POI — 4 operation(s) for excel.
  humanURL: https://poi.apache.org/components/index.html
  tags:
  - Excel
  properties:
  - type: OpenAPI
    url: openapi/apache-poi-excel-api-openapi.yml
  - type: Documentation
    url: https://poi.apache.org/components/index.html
  - type: Documentation
    url: https://poi.apache.org/components/
- aid: apache-poi:apache-poi-powerpoint-api
  name: Apache POI PowerPoint API
  description: The PowerPoint API from Apache POI — 2 operation(s) for powerpoint.
  humanURL: https://poi.apache.org/components/index.html
  tags:
  - PowerPoint
  properties:
  - type: OpenAPI
    url: openapi/apache-poi-powerpoint-api-openapi.yml
  - type: Documentation
    url: https://poi.apache.org/components/index.html
  - type: Documentation
    url: https://poi.apache.org/components/
- aid: apache-poi:apache-poi-word-api
  name: Apache POI Word API
  description: The Word API from Apache POI — 2 operation(s) for word.
  humanURL: https://poi.apache.org/components/index.html
  tags:
  - Word
  properties:
  - type: OpenAPI
    url: openapi/apache-poi-word-api-openapi.yml
  - type: Documentation
    url: https://poi.apache.org/components/index.html
  - type: Documentation
    url: https://poi.apache.org/components/
maintainers:
- FN: Kin Lane
  email: info@apievangelist.com
common:
- type: Plans
  url: plans/apache-poi-plans-pricing.yml
- type: RateLimits
  url: rate-limits/apache-poi-rate-limits.yml
- type: FinOps
  url: finops/apache-poi-finops.yml
- type: Website
  url: https://apache.org
- type: AgenticAccess
  url: agentic-access/apache-poi-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/apache-poi-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/apache-poi-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/apache/poi
- type: Documentation
  url: https://poi.apache.org/
- type: SpectralRules
  url: rules/apache-poi-spectral-rules.yml
- type: Vocabulary
  url: vocabulary/apache-poi-vocabulary.yaml
- type: JSONLD
  url: json-ld/apache-poi-context.jsonld
- type: Features
  data:
  - name: Excel HSSF/XSSF
    description: Read and write Excel files in legacy XLS (HSSF) and modern XLSX (XSSF) formats
  - name: Word HWPF/XWPF
    description: Read and write Word documents in legacy DOC (HWPF) and modern DOCX (XWPF) formats
  - name: PowerPoint HSLF/XSLF
    description: Create and manipulate PowerPoint presentations in PPT and PPTX formats
  - name: Formula Evaluation
    description: Evaluate Excel formulas and compute cell values programmatically
  - name: Streaming API
    description: Low-memory streaming API (SXSSF) for writing large Excel files
  - name: Chart Support
    description: Create and modify charts in Excel workbooks and PowerPoint slides
  - name: Digital Signatures
    description: Sign Office documents with digital signatures using OOXML standards
- type: UseCases
  data:
  - name: Report Generation
    description: Generate Excel and Word reports programmatically from application data
  - name: Data Import/Export
    description: Import data from Excel spreadsheets and export results back
  - name: Template Processing
    description: Fill Office document templates with dynamic data
  - name: Document Conversion
    description: Convert between legacy Office formats and modern OOXML formats
- type: Integrations
  data:
  - name: Apache Tika
    description: POI is used by Tika for Office document text extraction
  - name: Spring Framework
    description: Integrate POI with Spring Boot for web-based document generation
  - name: Maven Central
    description: Available as org.apache.poi artifacts on Maven Central
  - name: Apache Commons
    description: Uses Commons Collections and Commons Math for data structures

Apache POI API — frequently asked questions

Does Apache POI have an API?

Yes. APIs.io lists 4 APIs from Apache POI, including Apache POI Conversion API, Apache POI Excel API and Apache POI PowerPoint API, and 1 more.

Is there an OpenAPI specification for the Apache POI API?

Yes. APIs.io indexes 4 OpenAPI specifications for Apache POI, each linked for download from this page.

How much does the Apache POI API cost?

APIs.io lists 3 pricing plans for Apache POI, with each plan's price, limits and inclusions under Pricing on this page.

Is the Apache POI API ready for AI agents?

Apache POI has a Kin Score of 26.8 out of 100 (thin) and an Agent Readiness score of 16.6 (agent-aware), scored by API Evangelist on 2026-11-06.

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