This open source repository contains the standard QL libraries and queries that power LGTM, and the other products that Semmle makes available to its customers worldwide.

How do I learn QL and run queries?

LGTM has extensive documentation on getting started writing QL, and also has an interactive query console that allows you to try out your queries on any open-source project that's currently being analysed.

Contributing

We welcome contributions to our standard library and standard checks, got an idea for a new check, or how to improve an existing query? Then please go ahead an open a Pull Request! Before you do though, please take the time to read our contributing guidelines.

License

The lgtm queries are licensed under Apache License 2.0 by Semmle.

Languages

CodeQL 31.7%

Kotlin 27.1%

C# 16.4%

Java 7.5%

Python 4.5%

Other 12.6%