Apache HttpComponents

Apache HttpComponents is a set of Java HTTP components, including a feature-rich HTTP client (HttpClient 5.x) and HTTP server components. It provides connection pooling, async I/O, TLS/SSL support, authentication, cookie management, and content negotiation for Java applications making HTTP requests.

Apache HttpComponents publishes 2 APIs on the APIs.io network: Configuration API and Requests API. Tagged areas include Apache, HTTP Client, Java, Open-Source, and SDK.

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

Apache HttpComponents’ developer surface includes documentation, getting-started guide, engineering blog, and 11 more developer resources.

🌐 Visit website 📡 Source on GitHub

35.9/100 thin ▬ flat Agent 17/100 agent aware self hosted · Apache-2.0 Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemium

1 APIs 8 Features 5 Use Cases

Apache HTTP Client Java Open-Source SDK

Kin Score

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

Composite quality — 35.9/100 · thin

Contract Quality 10.9 / 20

Developer Ergonomics 5.0 / 16

Access Clarity 2.5 / 16

Operational Transparency 2.2 / 10

Contract Governance 2.8 / 10

Discoverability 4.7 / 8

Open Source Surface 5.0 / 10

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

Open Source Surface applies to this provider. This product is open source and we read its repository directly, so Open Source Surface carries 10 points of the composite. It is scored from what the repository actually publishes — a security policy, a contribution guide, a release history, a code of conduct — read live from the provider rather than inferred from our own catalog pointers. This facet adds; nothing was taken away to make room for it. An open-source project is not excused from the commercial facets, because exemption would strip it of the points it does earn. If we have the wrong repository, or this product is not open source, say so on your provider repo and we will drop the facet rather than have you publish against 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 80 points between them, because the conditional facet above carries the other 20. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 80% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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/apache-http: 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.

Apache HttpComponents Java SDK

Maven artifact for Apache HttpComponents HttpClient 5.x providing full HTTP client functionality including fluent API, async client, and reactive streams support.

Apache HttpComponents Configuration API

Client configuration operations

Apache HttpComponents Requests API

HTTP request execution operations

Open Collections 4

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

API Collection

OPEN COLLECTION

Apache HttpComponents Client API

OPEN COLLECTION

Apache HttpComponents Client Configuration API

OPEN COLLECTION

Apache HttpComponents Client Configuration Requests API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Apache Http Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Apache Http Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Apache Http Finops

FINOPS

Features 8

Notable capabilities this provider offers.

Connection Pooling

Configurable connection pool with per-route and total connection limits for efficient HTTP connection reuse.

Async HTTP Client

Non-blocking async HTTP client based on Java NIO for high-concurrency request execution.

TLS/SSL Support

Full TLS/SSL support with customizable trust stores, client certificates, and hostname verification.

Authentication Framework

Pluggable authentication framework supporting Basic, Digest, NTLM, and Bearer token schemes.

Cookie Management

RFC-compliant cookie management with customizable cookie stores and policies.

Proxy Support

HTTP, HTTPS, and SOCKS proxy support with proxy authentication.

Content Negotiation

Built-in content encoding, compression (gzip/deflate), and charset negotiation.

Fluent API

High-level fluent API for simplified one-liner HTTP request execution.

Scroll for all 8

Semantic Vocabularies 1

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

Apache Http Client Context

17 classes · 0 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

Apache HttpComponents API Rules

5 rules · 3 warnings 2 info

SPECTRAL

Apache HttpComponents API Rules

13 rules · 3 errors 8 warnings 2 info

SPECTRAL

JSON Schema 4

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

ConnectionConfig

5 properties

JSON SCHEMA

HttpRequest

5 properties

JSON SCHEMA

HttpResponse

5 properties

JSON SCHEMA

ProxyConfig

5 properties

JSON SCHEMA

JSON Structure 4

JSON Structure definitions describing this provider's data shapes.

Http Client Connectionconfig Structure

5 properties

JSON STRUCTURE

Http Client Httprequest Structure

5 properties

JSON STRUCTURE

Http Client Httpresponse Structure

5 properties

JSON STRUCTURE

Http Client Proxyconfig Structure

5 properties

JSON STRUCTURE

Examples 4

Example request and response payloads for these APIs.

Http Client Connectionconfig Example

5 fields

EXAMPLE

Http Client Httprequest Example

5 fields

EXAMPLE

Http Client Httpresponse Example

5 fields

EXAMPLE

Http Client Proxyconfig Example

5 fields

EXAMPLE

Security Posture 2

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

Apache Http Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Apache Http Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

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

Apache Http Agentic Access

3 operations · 3 acting

AGENTIC

Use Cases 5

What developers build with this provider.

REST API Client Integration

Consume REST APIs from Java applications with connection pooling and retry logic.

Web Scraping

Crawl and fetch web content with cookie handling and redirect following.

Microservices HTTP Communication

Make service-to-service HTTP calls with connection reuse and timeout configuration.

Authentication Token Refresh

Implement OAuth2 token refresh flows using the authentication interceptor framework.

File Upload and Download

Stream large file uploads and downloads via multipart or chunked transfer encoding.

Integrations 4

Pre-built integrations with other platforms and tools.

Spring Framework

Spring RestTemplate and WebClient use Apache HttpComponents as a configurable HTTP backend.

Apache CXF

Apache CXF JAX-RS client uses HttpComponents for HTTP transport in web service calls.

Elasticsearch Java Client

Elasticsearch Java client uses HttpComponents for transport-layer HTTP communication.

Apache Solr

Apache Solr Java client (SolrJ) uses HttpComponents for Solr HTTP API calls.

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

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 2

Pagination, idempotency, versioning, errors, and events

SpectralRules

SpectralRules

Vocabulary

Vocabulary

Build 3

SDKs, sample code, and the tooling you integrate with

CodeOfConduct

CodeOfConduct

GitHubOrganization

GitHubOrganization

GitHubRepository

GitHubRepository

Access & Security 3

Authentication, authorization, and security posture

SecurityPolicy

SecurityPolicy

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Commercial 1

Pricing, plans, and the legal terms of use

License

License

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: apache-http
name: Apache HttpComponents
description: Apache HttpComponents is a set of Java HTTP components, including a feature-rich HTTP client (HttpClient 5.x)
  and HTTP server components. It provides connection pooling, async I/O, TLS/SSL support, authentication, cookie management,
  and content negotiation for Java applications making HTTP requests.
type: Index
deliveryModel:
  model: self-hosted
  license: Apache-2.0
  open_source: true
  commercial: false
  callable_host: false
  label: Self-hosted open source · you run it yourself
  confidence: high
  source:
  - license
  - openapi
  generated: '2026-08-28'
  method: derived
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: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/apache-http.png
tags:
- Apache
- HTTP Client
- Java
- Open-Source
- SDK
tags_raw:
- Apache
- HTTP Client
- Java
- Open Source
- SDK
created: '2026-03-16'
modified: '2026-05-19'
url: https://raw.githubusercontent.com/api-evangelist/apache-http/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- aid: apache-http:apache-http-java-sdk
  name: Apache HttpComponents Java SDK
  description: Maven artifact for Apache HttpComponents HttpClient 5.x providing full HTTP client functionality including
    fluent API, async client, and reactive streams support.
  humanURL: https://hc.apache.org/httpcomponents-client-5.3.x/dependency-info.html
  tags:
  - Java
  - Maven
  - SDK
  properties:
  - type: Documentation
    url: https://hc.apache.org/httpcomponents-client-5.3.x/dependency-info.html
  - type: SDKs
    url: https://search.maven.org/artifact/org.apache.httpcomponents.client5/httpclient5
    title: Java SDK (Maven Central)
- aid: apache-http:apache-http-configuration-api
  name: Apache HttpComponents Configuration API
  description: Client configuration operations
  humanURL: https://hc.apache.org/httpcomponents-client-5.3.x/
  tags:
  - Configuration
  properties:
  - type: OpenAPI
    url: openapi/apache-http-configuration-api-openapi.yml
  - type: Documentation
    url: https://hc.apache.org/httpcomponents-client-5.3.x/
  - type: JSONSchema
    url: json-schema/http-client-httprequest-schema.json
  - type: JSONLD
    url: json-ld/apache-http-client-context.jsonld
- aid: apache-http:apache-http-requests-api
  name: Apache HttpComponents Requests API
  description: HTTP request execution operations
  humanURL: https://hc.apache.org/httpcomponents-client-5.3.x/
  tags:
  - Requests
  properties:
  - type: OpenAPI
    url: openapi/apache-http-requests-api-openapi.yml
  - type: Documentation
    url: https://hc.apache.org/httpcomponents-client-5.3.x/
  - type: JSONSchema
    url: json-schema/http-client-httprequest-schema.json
  - type: JSONLD
    url: json-ld/apache-http-client-context.jsonld
common:
- type: Website
  url: https://www.apache.org/
- type: SecurityPolicy
  url: https://github.com/apache/httpcomponents-client/blob/master/SECURITY.md
- type: CodeOfConduct
  url: https://github.com/apache/httpcomponents-client/blob/master/CODE_OF_CONDUCT.md
- type: License
  name: Apache-2.0
  url: https://github.com/apache/httpcomponents-client/blob/master/LICENSE
- type: AgenticAccess
  url: agentic-access/apache-http-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/apache-http-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/apache-http-domain-security.yml
- type: Documentation
  url: https://hc.apache.org/
- type: GettingStarted
  url: https://hc.apache.org/httpcomponents-client-5.3.x/quickstart.html
- type: GitHubOrganization
  url: https://github.com/apache
- type: GitHubRepository
  url: https://github.com/apache/httpcomponents-client
- type: SpectralRules
  url: rules/apache-http-spectral-rules.yml
- type: Vocabulary
  url: vocabulary/apache-http-vocabulary.yaml
- type: Features
  data:
  - name: Connection Pooling
    description: Configurable connection pool with per-route and total connection limits for efficient HTTP connection reuse.
  - name: Async HTTP Client
    description: Non-blocking async HTTP client based on Java NIO for high-concurrency request execution.
  - name: TLS/SSL Support
    description: Full TLS/SSL support with customizable trust stores, client certificates, and hostname verification.
  - name: Authentication Framework
    description: Pluggable authentication framework supporting Basic, Digest, NTLM, and Bearer token schemes.
  - name: Cookie Management
    description: RFC-compliant cookie management with customizable cookie stores and policies.
  - name: Proxy Support
    description: HTTP, HTTPS, and SOCKS proxy support with proxy authentication.
  - name: Content Negotiation
    description: Built-in content encoding, compression (gzip/deflate), and charset negotiation.
  - name: Fluent API
    description: High-level fluent API for simplified one-liner HTTP request execution.
- type: UseCases
  data:
  - name: REST API Client Integration
    description: Consume REST APIs from Java applications with connection pooling and retry logic.
  - name: Web Scraping
    description: Crawl and fetch web content with cookie handling and redirect following.
  - name: Microservices HTTP Communication
    description: Make service-to-service HTTP calls with connection reuse and timeout configuration.
  - name: Authentication Token Refresh
    description: Implement OAuth2 token refresh flows using the authentication interceptor framework.
  - name: File Upload and Download
    description: Stream large file uploads and downloads via multipart or chunked transfer encoding.
- type: Integrations
  data:
  - name: Spring Framework
    description: Spring RestTemplate and WebClient use Apache HttpComponents as a configurable HTTP backend.
  - name: Apache CXF
    description: Apache CXF JAX-RS client uses HttpComponents for HTTP transport in web service calls.
  - name: Elasticsearch Java Client
    description: Elasticsearch Java client uses HttpComponents for transport-layer HTTP communication.
  - name: Apache Solr
    description: Apache Solr Java client (SolrJ) uses HttpComponents for Solr HTTP API calls.
- url: https://hc.apache.org/news.html
  type: Blog
maintainers:
- FN: Kin Lane
  email: info@apievangelist.com

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