Apache Tomcat website screenshot

Apache Tomcat

Apache Tomcat is an open-source implementation of the Java Servlet, JavaServer Pages (JSP), Java Expression Language, and Java WebSocket technologies. It provides a pure Java HTTP web server and servlet container for hosting Java web applications. Tomcat exposes management APIs via the Manager application (HTTP text protocol), JMX for monitoring, and a Virtual Host Manager for configuration management. It is maintained by the Apache Software Foundation and is one of the most widely deployed Java application servers.

Apache Tomcat publishes 3 APIs on the APIs.io network: applications API, server API, and sessions API. Tagged areas include Application Server, Java, JSP, Open-Source, and Servlet.

Apache Tomcat’s developer surface includes authentication, documentation, developer portal, getting-started guide, release notes, support, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub
40.6/100 developing ▬ flat Agent 20/100 agent aware open core · Apache-2.0 Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
AccessFreemiumSelf serve⚡ Free to try
1 APIs 7 Features 4 Use Cases
Application ServerJavaJSPOpen-SourceServletWeb Server

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 40.6/100 · developing
Contract Quality 9.4 / 20
Developer Ergonomics 7.6 / 16
Access Clarity 4.2 / 16
Operational Transparency 4.1 / 10
Contract Governance 0.0 / 10
Discoverability 4.7 / 8
Open Source Surface 7.5 / 10
Create-or-Update Ergonomics 0.0 / 10
Agent readiness — 20/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 0 / 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
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-tomcat: 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 5

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

Apache Tomcat Manager API

The Tomcat Manager application provides an HTTP text protocol API for deploying, undeploying, starting, stopping, and reloading web applications remotely. Key endpoints include:...

Apache Tomcat JMX API

The Tomcat JMX API exposes management and monitoring beans for Connectors, Engines, Hosts, Contexts, Sessions, DataSources, thread pools, and memory via Java Management Extensio...

Apache Tomcat applications API

Manage deployed web applications

Apache Tomcat server API

Server, JVM, and SSL/TLS information

Apache Tomcat sessions API

Inspect and expire HTTP sessions

Open Collections 5

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

API Collection

OPEN COLLECTION

Apache Tomcat Manager Text applications API

OPEN COLLECTION

Apache Tomcat Manager Text applications server API

OPEN COLLECTION

Apache Tomcat Manager Text applications sessions API

OPEN COLLECTION

Apache Tomcat Manager Text API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Apache Tomcat Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Apache Tomcat Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Apache Tomcat Finops

FINOPS

Features 7

Notable capabilities this provider offers.

Servlet Container

Jakarta Servlet 6.0 (formerly Java EE) compliant servlet container.

JSP Engine

JavaServer Pages compiler and runtime engine for dynamic HTML generation.

WebSocket Support

Jakarta WebSocket 2.1 implementation for full-duplex browser-server communication.

HTTP/2 Support

HTTP/2 multiplexing and server push via APR/Native connector.

SSL/TLS Termination

Built-in SSL/TLS support via JSSE or APR/OpenSSL connectors.

Connection Pooling

DBCP2-based database connection pool management via JNDI DataSource.

Clustering

Session replication across Tomcat cluster nodes via DeltaManager or BackupManager.

Scroll for all 7

Security Posture 3

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

Apache Tomcat Authentication

http · 1 scheme

SECURITY

Apache Tomcat Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Apache Tomcat Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

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

Apache Tomcat Agentic Access

19 operations · 1 acting

19 operations · 1 acting

AGENTIC

Use Cases 4

What developers build with this provider.

Java Web Application Hosting

Deploy and host Java Servlet/JSP web applications.

API Gateway Backend

Host REST API backends built with Spring MVC, JAX-RS, or plain servlets.

Microservices Container

Embedded Tomcat in Spring Boot for microservices deployment.

Legacy Application Migration

Host Java EE applications during cloud migration.

Integrations 5

Pre-built integrations with other platforms and tools.

Spring Boot

Embedded Tomcat as the default servlet container in Spring Boot applications.

Apache HTTP Server

mod_jk and mod_proxy_ajp for load balancing between Apache httpd and Tomcat.

Nginx

Nginx reverse proxy for Tomcat with SSL termination and load balancing.

Prometheus

JMX Exporter for exposing Tomcat metrics in Prometheus format.

Docker

Official Docker image for containerized Tomcat deployment.

Resources

Get Started 2

Portal, sign-up, and the first successful call

Portal
Portal
 GettingStarted
GettingStarted

Documentation 2

Reference material describing how the API behaves

ContributionGuide
ContributionGuide
 Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 2

SDKs, sample code, and the tooling you integrate with

CodeOfConduct
CodeOfConduct
 GitHubRepository
GitHubRepository

Access & Security 4

Authentication, authorization, and security posture

SecurityPolicy
SecurityPolicy
 VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 2

Status, limits, changes, and where to get help

ReleaseNotes
ReleaseNotes
 Support
Support

Commercial 2

Pricing, plans, and the legal terms of use

License
License
 TermsOfService
TermsOfService

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: apache-tomcat
name: Apache Tomcat
description: Apache Tomcat is an open-source implementation of the Java Servlet, JavaServer Pages (JSP), Java Expression Language,
  and Java WebSocket technologies. It provides a pure Java HTTP web server and servlet container for hosting Java web applications.
  Tomcat exposes management APIs via the Manager application (HTTP text protocol), JMX for monitoring, and a Virtual Host
  Manager for configuration management. It is maintained by the Apache Software Foundation and is one of the most widely deployed
  Java application servers.
type: Index
deliveryModel:
  model: open-core
  license: Apache-2.0
  open_source: true
  commercial: true
  callable_host: false
  label: Open core · an OSS project plus a commercial hosted product
  confidence: high
  source:
  - license
  - 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: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
position: Consuming
access: 3rd-Party
image: https://tomcat.apache.org/res/images/tomcat.png
tags:
- Application Server
- Java
- JSP
- Open-Source
- Servlet
- Web Server
tags_raw:
- Application Server
- Java
- JSP
- Open Source
- Servlet
- Web Server
created: '2024-01-15'
modified: '2026-04-19'
url: https://raw.githubusercontent.com/api-evangelist/apache-tomcat/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- aid: apache-tomcat:apache-tomcat-manager-api
  name: Apache Tomcat Manager API
  description: 'The Tomcat Manager application provides an HTTP text protocol API for deploying, undeploying, starting, stopping,
    and reloading web applications remotely. Key endpoints include: /manager/text/list (list deployed apps), /manager/text/deploy
    (deploy a WAR file), /manager/text/undeploy, /manager/text/start, /manager/text/stop, /manager/text/reload, /manager/text/sessions
    (session statistics), and /manager/text/serverinfo. Requires manager-script role authentication.'
  humanURL: https://tomcat.apache.org/tomcat-10.1-doc/manager-howto.html
  tags:
  - Administration
  - Deployment
  - Management
  - REST
  properties:
  - type: Documentation
    url: https://tomcat.apache.org/tomcat-10.1-doc/manager-howto.html
- aid: apache-tomcat:apache-tomcat-jmx-api
  name: Apache Tomcat JMX API
  description: The Tomcat JMX API exposes management and monitoring beans for Connectors, Engines, Hosts, Contexts, Sessions,
    DataSources, thread pools, and memory via Java Management Extensions. JMX can be accessed via JConsole, Java VisualVM,
    or remote JMX clients. Prometheus JMX Exporter can expose Tomcat metrics in Prometheus format via HTTP endpoint.
  humanURL: https://tomcat.apache.org/tomcat-10.1-doc/monitoring.html
  tags:
  - JMX
  - Monitoring
  - Management
  - Java
  properties:
  - type: Documentation
    url: https://tomcat.apache.org/tomcat-10.1-doc/monitoring.html
- aid: apache-tomcat:apache-tomcat-applications-api
  name: Apache Tomcat applications API
  description: Manage deployed web applications
  humanURL: https://tomcat.apache.org/tomcat-10.1-doc/manager-howto.html
  tags:
  - Application
  tags_raw:
  - applications
  properties:
  - type: OpenAPI
    url: openapi/apache-tomcat-applications-api-openapi.yml
- aid: apache-tomcat:apache-tomcat-server-api
  name: Apache Tomcat server API
  description: Server, JVM, and SSL/TLS information
  humanURL: https://tomcat.apache.org/tomcat-10.1-doc/manager-howto.html
  tags:
  - Server
  tags_raw:
  - server
  properties:
  - type: OpenAPI
    url: openapi/apache-tomcat-server-api-openapi.yml
- aid: apache-tomcat:apache-tomcat-sessions-api
  name: Apache Tomcat sessions API
  description: Inspect and expire HTTP sessions
  humanURL: https://tomcat.apache.org/tomcat-10.1-doc/manager-howto.html
  tags:
  - Sessions
  tags_raw:
  - sessions
  properties:
  - type: OpenAPI
    url: openapi/apache-tomcat-sessions-api-openapi.yml
common:
- type: Website
  url: https://www.apache.org/
- type: SecurityPolicy
  url: https://github.com/apache/tomcat/blob/main/SECURITY.md
- type: CodeOfConduct
  url: https://github.com/apache/.github/blob/main/.github/CODE_OF_CONDUCT.md
- type: ContributionGuide
  url: https://github.com/apache/tomcat/blob/main/CONTRIBUTING.md
- type: License
  name: Apache-2.0
  url: https://github.com/apache/tomcat/blob/main/LICENSE
- type: AgenticAccess
  url: agentic-access/apache-tomcat-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/apache-tomcat-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/apache-tomcat-domain-security.yml
- type: Authentication
  url: authentication/apache-tomcat-authentication.yml
- type: GitHubRepository
  url: https://github.com/apache/tomcat
- type: Documentation
  url: https://tomcat.apache.org/tomcat-10.1-doc/
- type: Portal
  url: https://tomcat.apache.org/
- type: GettingStarted
  url: https://tomcat.apache.org/tomcat-10.1-doc/setup.html
- type: ReleaseNotes
  url: https://tomcat.apache.org/tomcat-10.1-doc/changelog.html
- type: Support
  url: https://tomcat.apache.org/lists.html
- type: TermsOfService
  url: https://www.apache.org/licenses/
- type: Features
  data:
  - name: Servlet Container
    description: Jakarta Servlet 6.0 (formerly Java EE) compliant servlet container.
  - name: JSP Engine
    description: JavaServer Pages compiler and runtime engine for dynamic HTML generation.
  - name: WebSocket Support
    description: Jakarta WebSocket 2.1 implementation for full-duplex browser-server communication.
  - name: HTTP/2 Support
    description: HTTP/2 multiplexing and server push via APR/Native connector.
  - name: SSL/TLS Termination
    description: Built-in SSL/TLS support via JSSE or APR/OpenSSL connectors.
  - name: Connection Pooling
    description: DBCP2-based database connection pool management via JNDI DataSource.
  - name: Clustering
    description: Session replication across Tomcat cluster nodes via DeltaManager or BackupManager.
- type: UseCases
  data:
  - name: Java Web Application Hosting
    description: Deploy and host Java Servlet/JSP web applications.
  - name: API Gateway Backend
    description: Host REST API backends built with Spring MVC, JAX-RS, or plain servlets.
  - name: Microservices Container
    description: Embedded Tomcat in Spring Boot for microservices deployment.
  - name: Legacy Application Migration
    description: Host Java EE applications during cloud migration.
- type: Integrations
  data:
  - name: Spring Boot
    description: Embedded Tomcat as the default servlet container in Spring Boot applications.
  - name: Apache HTTP Server
    description: mod_jk and mod_proxy_ajp for load balancing between Apache httpd and Tomcat.
  - name: Nginx
    description: Nginx reverse proxy for Tomcat with SSL termination and load balancing.
  - name: Prometheus
    description: JMX Exporter for exposing Tomcat metrics in Prometheus format.
  - name: Docker
    description: Official Docker image for containerized Tomcat deployment.
maintainers:
- FN: Kin Lane
  email: info@apievangelist.com

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