check-jsonschema

A pre-commit hook for checking files against a JSONSchema. The schema may be specified as a local or remote (HTTP or HTTPS) file.

Remote files are automatically downloaded and cached if possible.

Supported Hooks

The most generic hook is this one:

check-jsonschema: Validate JSON or YAML files against a jsonschema on disk or fetched via HTTP(S)

These hooks check known files against schemas provided by Schemastore:

check-github-workflows: Validate GitHub Workflows in .github/workflows/
check-github-actions: Validate GitHub Actions in .github/actions/ or the action.yml at the repo root
check-travis: Validate Travis config

These hooks check known files against schemas provided by other sources:

check-azure-pipelines: Validate Azure Pipelines config against the schema provided by Microsoft

Example Usage

Validate GitHub Workflows with Schemastore

You can use the schemastore github workflow schema to lint your GitHub workflow files. This hook is so useful, it's built in as a pre-set. All you need to add to your .pre-commit-config.yaml is this:

- repo: https://github.com/sirosen/check-jsonschema
  rev: 0.3.0
  hooks:
    - id: check-github-workflows

Applying an arbitrary schema to files

There is a more general hook available for running any jsonschema against a file or set of files. For example, to implement the GitHub workflow check manually, you could do this:

- repo: https://github.com/sirosen/check-jsonschema
  rev: 0.3.0
  hooks:
    - id: check-jsonschema
      name: "Check GitHub Workflows"
      language: python
      files: ^\.github/workflows/
      types: [yaml]
      args: ["--schemafile", "https://json.schemastore.org/github-workflow"]

Standalone Usage

You can also pip install check-jsonschema to run the tool manually.

For full usage info:

check-jsonschema --help

defrank / check-jsonschema