What is logicapps-lint?

logicapps-lint is a command line tool that checks Azure Logic Apps workflow definitions for problems before you deploy them. It is an unofficial, independent project not affiliated with Microsoft. The idea behind it is that Logic Apps Standard workflows can fail late, after deployment, in the portal, or only when they actually run, and this tool tries to catch static, visible issues in the workflow files before that happens. The linter checks a very long list of things, including malformed workflow JSON files, unknown action or trigger types, missing required fields on control structures like Foreach, Until, Scope, If, and Switch, invalid expression syntax, broken references between actions, cyclical or unreachable execution paths, invalid retry policies and time duration formats, and missing or malformed connection and parameter files used by Standard Logic Apps projects. It intentionally does not try to fully replicate how the Azure runtime behaves, validate connector schemas, infer expression types, or validate an actual deployment. You can install it through Homebrew on macOS and Linux, download a prebuilt archive for macOS, Linux, or Windows from the project's releases page, or build it from source using Rust 1.88 or later. Once installed, you run it by pointing it at a project folder, a single workflow file, or an ARM template file, and it recursively finds workflow files to check. The tool offers some flexibility in how strict it is. You can downgrade specific diagnostic codes to warnings, suppress them entirely, or turn on a strict mode that enforces the published schema literally instead of tolerating case variations that the actual Logic Apps runtime accepts. The project is dual licensed under MIT or Apache 2.0, so it can be used, modified, and redistributed under either license at your choice.