Apache POI website screenshot

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 APIs 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 7 more developer resources.

🌐 Visit website 📡 Source on GitHub
43.1/100 developing ▼ -5.1 Agent 22/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemium
4 APIs 7 Features 4 Use Cases
Document ProcessingExcelJavaMicrosoft OfficePowerPointWordApacheOpen Source

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 43.1/100 · developing
Contract Quality 14.0 / 25
Developer Ergonomics 1.7 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.8 / 13
Governance 8.3 / 12
Discoverability 6.5 / 10
Agent readiness — 22/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
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
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/apache-poi: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 4

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

Apache POI Conversion API

The Conversion API from Apache POI — 1 operation(s) for conversion.

Apache POI Excel API

The Excel API from Apache POI — 4 operation(s) for excel.

Apache POI PowerPoint API

The PowerPoint API from Apache POI — 2 operation(s) for powerpoint.

Apache POI Word API

The Word API from Apache POI — 2 operation(s) for word.

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

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 API Rules

5 rules · 3 warnings 2 info

SPECTRAL

Apache POI API Rules

7 rules · 1 errors 5 warnings 1 info

SPECTRAL

JSON Schema 16

Standalone JSON Schema definitions for this provider's data models.

CellData

2 properties

JSON SCHEMA

Cell

4 properties

JSON SCHEMA

ConversionRequest

3 properties

JSON SCHEMA

ConversionResult

4 properties

JSON SCHEMA

DocumentRequest

3 properties

JSON SCHEMA

Document

5 properties

JSON SCHEMA

Paragraph

3 properties

JSON SCHEMA

PresentationRequest

3 properties

JSON SCHEMA

Presentation

4 properties

JSON SCHEMA

Shape

4 properties

JSON SCHEMA

SheetList

1 properties

JSON SCHEMA

Sheet

4 properties

JSON SCHEMA

Slide

3 properties

JSON SCHEMA

WorkbookList

2 properties

JSON SCHEMA

WorkbookRequest

3 properties

JSON SCHEMA

Workbook

5 properties

JSON SCHEMA

Scroll for all 16

JSON Structure 16

JSON Structure definitions describing this provider's data shapes.

Apache Poi Cell Data Structure

2 properties

JSON STRUCTURE

Apache Poi Cell Structure

4 properties

JSON STRUCTURE

Apache Poi Conversion Request Structure

3 properties

JSON STRUCTURE

Apache Poi Conversion Result Structure

4 properties

JSON STRUCTURE

Apache Poi Document Request Structure

3 properties

JSON STRUCTURE

Apache Poi Document Structure

5 properties

JSON STRUCTURE

Apache Poi Paragraph Structure

3 properties

JSON STRUCTURE

Apache Poi Presentation Request Structure

3 properties

JSON STRUCTURE

Apache Poi Presentation Structure

4 properties

JSON STRUCTURE

Apache Poi Shape Structure

4 properties

JSON STRUCTURE

Apache Poi Sheet List Structure

1 properties

JSON STRUCTURE

Apache Poi Sheet Structure

4 properties

JSON STRUCTURE

Apache Poi Slide Structure

3 properties

JSON STRUCTURE

Apache Poi Workbook List Structure

2 properties

JSON STRUCTURE

Apache Poi Workbook Request Structure

3 properties

JSON STRUCTURE

Apache Poi Workbook Structure

5 properties

JSON STRUCTURE

Scroll for all 16

Examples 16

Example request and response payloads for these APIs.

Apache Poi Cell Data Example

2 fields

EXAMPLE

Apache Poi Cell Example

4 fields

EXAMPLE

Apache Poi Conversion Request Example

3 fields

EXAMPLE

Apache Poi Conversion Result Example

4 fields

EXAMPLE

Apache Poi Document Example

5 fields

EXAMPLE

Apache Poi Document Request Example

3 fields

EXAMPLE

Apache Poi Paragraph Example

3 fields

EXAMPLE

Apache Poi Presentation Example

4 fields

EXAMPLE

Apache Poi Presentation Request Example

3 fields

EXAMPLE

Apache Poi Shape Example

4 fields

EXAMPLE

Apache Poi Sheet Example

4 fields

EXAMPLE

Apache Poi Sheet List Example

1 fields

EXAMPLE

Apache Poi Slide Example

3 fields

EXAMPLE

Apache Poi Workbook Example

5 fields

EXAMPLE

Apache Poi Workbook List Example

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

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

Source (apis.yml)

apis.yml Raw ↑ 
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
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
position: Consumer
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
created: '2026-03-16'
modified: '2026-05-19'
url: https://raw.githubusercontent.com/api-evangelist/apache-poi/refs/heads/main/apis.yml
specificationVersion: '0.19'
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: 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