Thymeleaf

Thymeleaf is a modern server-side Java template engine for both web and standalone environments, capable of processing HTML, XML, JavaScript, CSS, and plain text. Its primary goal is to bring elegant natural templates to development workflows — HTML pages that can be correctly displayed in browsers as static prototypes while also working as dynamic server-side templates. With over 3,000 GitHub stars, Thymeleaf 3.1 offers deep Spring Framework integration via the Spring Standard Dialect using Spring EL, extensive tool support for Eclipse and IntelliJ IDEA, and an extensible dialect system. It is widely used in Spring Boot web applications as the standard server-side rendering solution.

Thymeleaf publishes 3 APIs on the APIs.io network. Tagged areas include HTML, Java, Open Source, Server Side Rendering, and Spring.

The Thymeleaf catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Thymeleaf’s developer surface includes documentation and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub

32.3/100 thin ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1

AccessFreemium

3 APIs

HTMLJavaOpen SourceServer Side RenderingSpringSpring BootTemplate EngineThymeleafWeb Development

Kin Score

Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1

Composite quality — 32.3/100 · thin

Contract Quality 4.4 / 25

Developer Ergonomics 1.7 / 20

Commercial Clarity 7.9 / 20

Operational Transparency 4.8 / 13

Governance 7.0 / 12

Discoverability 6.5 / 10

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 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/thymeleaf: 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 3

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

Rate Limits 1

Documented rate limits and quota policies.

Thymeleaf Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

JSON Schema 1

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

Examples 1

Example request and response payloads for these APIs.

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

JSONSchema

JSONSchema

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

JSONStructure

JSONStructure

JSONLDContext

JSONLDContext

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Issue Tracker

Issue Tracker

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Maven

Maven

Spring Boot Starter

Spring Boot Starter

Source (apis.yml)

aid: thymeleaf
name: Thymeleaf
description: Thymeleaf is a modern server-side Java template engine for both web and standalone environments, capable of processing
  HTML, XML, JavaScript, CSS, and plain text. Its primary goal is to bring elegant natural templates to development workflows
  — HTML pages that can be correctly displayed in browsers as static prototypes while also working as dynamic server-side
  templates. With over 3,000 GitHub stars, Thymeleaf 3.1 offers deep Spring Framework integration via the Spring Standard
  Dialect using Spring EL, extensive tool support for Eclipse and IntelliJ IDEA, and an extensible dialect system. It is widely
  used in Spring Boot web applications as the standard server-side rendering solution.
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
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/thymeleaf.png
tags:
- HTML
- Java
- Open Source
- Server Side Rendering
- Spring
- Spring Boot
- Template Engine
- Thymeleaf
- Web Development
url: https://raw.githubusercontent.com/api-evangelist/thymeleaf/refs/heads/main/apis.yml
created: '2026-03-16'
modified: '2026-05-03'
specificationVersion: '0.19'
apis:
- aid: thymeleaf:thymeleaf-core
  name: Thymeleaf Core
  description: 'The core Thymeleaf template engine library providing HTML, XML, TEXT, JavaScript, and CSS template mode processing.
    Includes the Standard Dialect with th:text, th:each, th:if, th:unless, th:switch, th:href, th:src, th:action, th:object,
    th:field expressions and the Standard Expression Syntax using ${...} variable expressions, *{...} selection expressions,
    #{...} message expressions, @{...} URL expressions, and ~{...} fragment expressions.'
  humanURL: https://www.thymeleaf.org/
  baseURL: https://www.thymeleaf.org/
  tags:
  - HTML
  - Java
  - Open Source
  - Template Engine
  - Thymeleaf
  properties:
  - type: Documentation
    url: https://www.thymeleaf.org/doc/tutorials/3.1/usingthymeleaf.html
  - type: GettingStarted
    url: https://www.thymeleaf.org/doc/tutorials/3.1/usingthymeleaf.html#a-first-taste-of-thymeleaf
  - type: GitHub
    url: https://github.com/thymeleaf/thymeleaf
  - type: Maven
    url: https://mvnrepository.com/artifact/org.thymeleaf/thymeleaf
  - type: ChangeLog
    url: https://github.com/thymeleaf/thymeleaf/releases
  version: 3.1.5.RELEASE
- aid: thymeleaf:thymeleaf-spring-integration
  name: Thymeleaf Spring Integration
  description: The Thymeleaf Spring integration module (thymeleaf-spring6) providing deep integration with Spring Framework
    including the SpringStandardDialect using Spring EL, SpringTemplateEngine auto-configuration, Spring MVC view resolver
    integration, Spring Security dialect, form binding support, internationalization with Spring MessageSource, and Spring
    Boot starter.
  humanURL: https://www.thymeleaf.org/doc/tutorials/3.1/thymeleafspring.html
  baseURL: https://www.thymeleaf.org/
  tags:
  - Java
  - Spring
  - Spring Boot
  - Spring MVC
  - Template Engine
  properties:
  - type: Documentation
    url: https://www.thymeleaf.org/doc/tutorials/3.1/thymeleafspring.html
  - type: GitHub
    url: https://github.com/thymeleaf/thymeleaf-spring
  - type: Maven Spring6
    url: https://mvnrepository.com/artifact/org.thymeleaf/thymeleaf-spring6
  - type: Maven Spring Boot Starter
    url: https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-thymeleaf
  - type: Spring Security Extras
    url: https://github.com/thymeleaf/thymeleaf-extras-springsecurity
- aid: thymeleaf:thymeleaf-extras
  name: Thymeleaf Extras and Dialects
  description: Additional Thymeleaf dialect extensions including the Java 8 Time dialect for date/time formatting, the Spring
    Security dialect for security tag support, and community-maintained dialects such as the Layout Dialect for page-level
    layout management.
  humanURL: https://www.thymeleaf.org/
  tags:
  - Dialects
  - Extensions
  - Java
  - Template Engine
  - Thymeleaf
  properties:
  - type: GitHub Java8 Time Extras
    url: https://github.com/thymeleaf/thymeleaf-extras-java8time
  - type: GitHub Spring Security Extras
    url: https://github.com/thymeleaf/thymeleaf-extras-springsecurity
  - type: Layout Dialect
    url: https://ultraq.github.io/thymeleaf-layout-dialect/
common:
- type: DomainSecurity
  url: security/thymeleaf-domain-security.yml
- type: Website
  url: https://www.thymeleaf.org/
- type: Documentation
  url: https://www.thymeleaf.org/doc/tutorials/3.1/usingthymeleaf.html
- type: GitHubOrganization
  url: https://github.com/thymeleaf
- type: Maven
  url: https://mvnrepository.com/artifact/org.thymeleaf/thymeleaf
- type: Issue Tracker
  url: https://github.com/thymeleaf/thymeleaf/issues
- type: Spring Boot Starter
  url: https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-thymeleaf
- type: JSONSchema
  url: https://raw.githubusercontent.com/api-evangelist/thymeleaf/refs/heads/main/json-schema/thymeleaf-template-schema.json
- type: JSONStructure
  url: https://raw.githubusercontent.com/api-evangelist/thymeleaf/refs/heads/main/json-structure/thymeleaf-template-structure.json
- type: JSONLDContext
  url: https://raw.githubusercontent.com/api-evangelist/thymeleaf/refs/heads/main/json-ld/thymeleaf-context.jsonld
- type: Integrations
  url: https://www.thymeleaf.org/ecosystem
integrations:
- name: Thymeleaf
- name: example
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Thymeleaf

Kin Score

APIs 3

Thymeleaf Core

Thymeleaf Spring Integration

Thymeleaf Extras and Dialects

Pricing Plans 1

Thymeleaf Plans Pricing

Rate Limits 1

Thymeleaf Rate Limits

FinOps 1

Thymeleaf Finops

Semantic Vocabularies 1

Thymeleaf Context

Spectral Rules 1

Thymeleaf API Rules

JSON Schema 1

Thymeleaf Template Configuration

JSON Structure 1

Thymeleaf Template Structure

Examples 1

Thymeleaf Spring Boot Example

Security Posture 1

Thymeleaf Domain Security

Resources