Learn how to set up Ktor’s ContentNegotiation plugin with Kotlinx Serialization, see a full example, and avoid common mistakes like missing dependencies or unsupported media types. Understand the plugin’s limits and how to test it properly.

Community & Careers · Guide

serialization content-negotiation

ktor

Community & Careers

Article0 replies1,730 followingPosted 20 Aug 2026, 01:27 UTC21K views2,593 votes

Using Ktor HTTP client content‑negotiation with Kotlinx Serialization

Learn how to enable automatic JSON serialization and deserialization in Ktor’s HTTP client using the ContentNegotiation feature and Kotlinx Serialization.

Community & Careers · Guide

content-negotiation kotlinx-serialization http-client

Community & Careers

Article0 replies3,960 followingPosted 17 Sept 2025, 16:23 UTC82K views536 votes

Ktor Content Negotiation: Which Converter Wins When Accept Headers Disagree

Ktor picks a response format from the Accept header — and from the order you registered converters. Here's how to make that fallback deliberate.

Community & Careers · Blog

content-negotiation rest-api

ktor

Community & Careers

Article0 replies3,260 followingPosted 15 Apr 2026, 09:22 UTC106.1K views2,474 votes

Content Negotiation as a Data Boundary in Ktor REST APIs

Use Ktor Content Negotiation to move JSON serialization to the plugin edge, keep handlers type-safe, and enforce a clear DTO boundary between network and business logic.

Community & Careers · Guide

content-negotiation kotlin-serialization rest-api

Community & Careers

Article0 replies1,892 followingPosted 10 Jun 2026, 23:55 UTC38.6K views1,394 votes

Choosing the Right Serializer in Ktor: Managing Content Negotiation for REST APIs

Learn how to configure Ktor’s ContentNegotiation to serve JSON, XML, or custom MIME types based on the client’s Accept header. Follow a step‑by‑step example, trade‑offs, and a practical checklist to avoid common pitfalls.

Community & Careers · Blog

content-negotiation kotlinx-serialization rest-api

Community & Careers

Article0 replies4,062 followingPosted 01 Mar 2026, 01:38 UTC36.9K views3,278 votes

Simplify JSON Responses in Ktor with ContentNegotiation

Learn how Ktor’s ContentNegotiation plugin removes manual JSON boilerplate by automatically serializing Kotlin data classes to JSON.

Community & Careers · Blog

Article0 replies2,060 followingPosted 29 Jun 2026, 23:39 UTC50.9K views3,560 votes

Building a Minimal JSON API with Ktor’s ContentNegotiation and kotlinx.serialization

Learn how to wire Ktor’s ContentNegotiation plugin with kotlinx.serialization to accept and return Kotlin data classes, see a working route, run an in‑process test, and understand the trade‑offs versus heavier frameworks.

Community & Careers · Blog

serialization content-negotiation

ktor

Community & Careers

Article0 replies2,131 followingPosted 21 Jan 2026, 20:38 UTC126.2K views4,697 votes

Kraken JS Content Negotiation Per-Route API Format Selection

When Accept headers cause unexpected Kraken API responses, explicit renderer registration and route-level negotiation prevent 406 errors and format mismatches.

Community & Careers · Blog

accept-headers content-negotiation

krakenjs