migrating-newtonsoft-to-system-text-json

Name: migrating-newtonsoft-to-system-text-json
Availability: InStock
Author: Microsoft

Automate .NET project migration from Newtonsoft.Json to System.Text.Json.

19|2|Updated May 13, 2026

Search Tags:#migration #.NET #System.Text.Json #API compatibility #Newtonsoft.Json

Ready to run

npx skills add https://github.com/microsoft/upgrade-agent-plugins --skill migrating-newtonsoft-to-system-text-json

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: migrating-newtonsoft-to-system-text-json
Source: https://github.com/microsoft/upgrade-agent-plugins/tree/main/plugins/upgrade-agent/extenders/upgrade-dotnet/upgrade/skills/lazy/libraries/migrating-newtonsoft-to-system-text-json
Command: npx skills add https://github.com/microsoft/upgrade-agent-plugins --skill migrating-newtonsoft-to-system-text-json

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) components.

What problem does it solve?

This Skill automates the process of migrating .NET projects from Newtonsoft.Json to System.Text.Json, reducing the need for manual updates to package references, code files, and configurations.

Core Features & Use Cases

Automatic Migration: Updates package dependencies and modifies code files for smooth transition.
Case Insensitive Matching: Ensures compatibility with project references and file names.
API Mappings: Offers direct type mappings and guidance for API differences.
Use Case: If your project currently uses Newtonsoft.Json and you need to migrate to System.Text.Json to leverage modern features, this Skill is the solution.

Quick Start

Run the 'migrating-newtonsoft-to-system-text-json' skill in your project to automate the Newtonsoft.Json to System.Text.Json migration.

Frequently Asked Questions about migrating-newtonsoft-to-system-text-json

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

FAQPage Schema

How do I migrate a .NET project from Newtonsoft.Json to System.Text.Json?▼

To migrate from Newtonsoft.Json to System.Text.Json, this skill automates dependency detection and modifies source code without manual intervention. It analyzes project files to update package references and provides direct API type mappings for a smooth transition.

What is the best way to handle API compatibility differences when migrating to System.Text.Json?▼

Handling API compatibility during migration involves using direct type mappings and guidance for API differences. This skill automatically applies case insensitive matching for project references and file names to ensure compatibility and resolve differences.

Does the Newtonsoft.Json to System.Text.Json migration tool modify code files automatically?▼

Yes, the migration tool modifies code files automatically. It detects dependencies and updates package references and source code without manual intervention, ensuring a smooth transition to System.Text.Json for project modernization.

Can I use System.Text.Json migration for projects with case-sensitive file names?▼

Yes, you can migrate projects with case-sensitive file names. The skill ensures compatibility by applying case insensitive matching for project references and file names during the automated migration process.

Why should I migrate from Newtonsoft.Json to System.Text.Json?▼

You should migrate from Newtonsoft.Json to System.Text.Json to leverage modern .NET features and enhance project modernization. This skill reduces the need for manual updates to package references, code files, and configurations.