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kotlin-ktor-patterns

Implement Ktor server patterns for HTTP APIs with JWT auth and Koin DI.

1|Updated Mar 3, 2026
Search Tags:#integration testing#dependency injection#kotlin#websockets#ktor#jwt authentication#kotlinx serialization
One-click install
npx skills add https://github.com/samymity/bridge-ventures-backend --skill kotlin-ktor-patterns-samymity
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: kotlin-ktor-patterns
Source: https://github.com/samymity/bridge-ventures-backend/tree/main/.claude/skills/kotlin-ktor-patterns
Command: npx skills add https://github.com/samymity/bridge-ventures-backend --skill kotlin-ktor-patterns-samymity

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill solves the challenge of designing maintainable Ktor server applications by providing a cohesive set of practical patterns for routing, plugins, DI, serialization, auth, error handling, WebSockets, and integration testing.

Core Features & Use Cases

  • Routing DSL & Route Organization: Define grouped REST endpoints (including authenticated sub-routes) using Ktor’s routing DSL for clean structure.
  • Ktor Plugins Setup: Configure ContentNegotiation with kotlinx.serialization, JWT authentication, StatusPages-based error handling, and CORS for production-friendly defaults.
  • Koin Dependency Injection: Wire repositories and services via Koin modules and use inject() directly inside routes, including test-friendly module swapping.
  • WebSockets Support: Add WebSocket endpoints with connection management and broadcast-style message handling.
  • testApplication Integration Testing: Validate endpoints (including protected routes) using Ktor’s testApplication with deterministic client setup.

Quick Start

Ask the assistant to generate a complete Ktor module layout for an HTTP API using routing DSL, JWT auth, StatusPages, CORS, Koin DI, kotlinx.serialization, plus a small testApplication-based integration test suite.

Frequently Asked Questions about kotlin-ktor-patterns

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
What's the best way to structure a Kotlin Ktor server for maintainable REST APIs?▼

To structure a maintainable Ktor server, group REST endpoints using Ktor's routing DSL and configure essential plugins like ContentNegotiation, StatusPages, and CORS. This pattern enforces clean route organization and production-friendly defaults for your Kotlin HTTP APIs.

How do I set up JWT authentication in a Kotlin Ktor application?▼

To set up JWT authentication in a Ktor application, install the JWT auth plugin and define authenticated sub-routes using the routing DSL. This approach protects specific REST endpoints while keeping the overall API route structure clean.

Can I use Koin for dependency injection in Ktor and still write integration tests?▼

Yes, you can wire repositories and services via Koin modules and use inject() directly inside routes. This pattern supports testable Koin modules, allowing you to swap dependencies for deterministic testApplication integration testing.

How do I add WebSocket endpoints to a Kotlin Ktor server?▼

To add WebSocket endpoints to a Ktor server, use Ktor's routing DSL to define the WebSocket routes and implement connection management for broadcast-style message handling within your Kotlin application.

Does Ktor testApplication support integration testing for JWT protected routes?▼

Yes, Ktor's testApplication supports integration testing for JWT protected routes. You can validate endpoints using deterministic client setup alongside test-friendly Koin modules to ensure reliable and isolated integration tests.

How do I configure ContentNegotiation with kotlinx serialization in Ktor?▼

To configure ContentNegotiation with kotlinx serialization in Ktor, install the ContentNegotiation plugin and register the kotlinx.serialization JSON converter. This enables automatic serialization and deserialization for your HTTP API request and response bodies.

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