# sonar-duplication

> Claude/Codex skill by [@sonarsource](https://omgskills.com/library/sonarsource/index.md) · 113 stars · Updated 2026-10-22

Find files with code duplications in a SonarQube project and inspect duplication blocks for a file (project key optional when MCP integration already defines the default project)

Tags: agent, ai, sonarqube

## Install

```sh
git clone https://github.com/SonarSource/sonarqube-agent-plugins /tmp/sonarqube-agent-plugins && ln -s /tmp/sonarqube-agent-plugins/skills/sonar-duplication ~/.claude/skills/sonar-duplication
```

## From README

SonarQube — Duplication List files that contain duplicated code in a SonarQube project, then drill into duplication blocks for a specific file when needed. Prerequisites This skill requires the SonarQube MCP Server to be configured and the tools mcpsonarqubesearchduplicatedfiles and mcpsonarqubegetduplications to be available in your session. Before proceeding, verify the tools are accessible. If they are not, try the sonar api CLI fallback in Step 3 before giving up — don't invent other CLI commands (e.g. sonar mcp call or sonar duplication do not exist). If the CLI fallback also fails (for example sonar not installed/authenticated, or no project key can be resolved), narrow down the cause — check whether the sonarqube MCP server is enabled in this agent's configuration. Not enabled / not registered → recommend running the sonar-integrate skill. Enabled but its tools are still unavailable → configuration is correct but the server failed to start.

## Links

- HTML page: https://omgskills.com/library/sonarsource/sonarqube-agent-plugins/skills/sonar-duplication/
- GitHub: https://github.com/SonarSource/sonarqube-agent-plugins
- Author: [@sonarsource](https://omgskills.com/library/sonarsource/index.md)

## More from this repo

- [sonar-analyze](https://omgskills.com/library/sonarsource/sonarqube-agent-plugins/skills/sonar-analyze/index.md) — Used to analyze a file for quality and security issues using SonarQube
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