RustSchema

A VS Code extension for JSON Schema validation, powered by the Rust engine jsonschema by Stranger6667.

Validates your JSON files automatically as you work. No configuration needed if your file includes a $schema key.

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Install

One command

curl -L https://github.com/adityakumar37/rustschema/releases/download/v0.0.1/rustschema-0.0.1.vsix -o rustschema.vsix && code --install-extension rustschema.vsix

Manual

1. Go to Releases
2. Download rustschema-0.0.1.vsix
3. Run:

code --install-extension rustschema-0.0.1.vsix

From Source

git clone https://github.com/adityakumar37/rustschema
cd rustschema
npm install
npm run compile

Press F5 in VS Code to run.

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Requirements

Install Rust and jsonschema-cli before using the extension.

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
cargo install jsonschema-cli

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Usage

Auto Detection

Add a $schema key to your JSON file:

{
  "$schema": "./schema.json",
  "name": "John",
  "age": 25
}

RustSchema reads the key, finds the schema, and validates automatically on open and save.

Manual Trigger

Press Cmd + Shift + P → type RustSchema: Validate JSON against Schema

Settings

If you prefer not to add $schema to your files, set a global schema path:

1. Open Settings (Cmd + ,)
2. Search rustschema
3. Set RustSchema: Schema Path to the path of your schema relative to the workspace root

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Example

schema.json

{
  "type": "object",
  "properties": {
    "name": { "type": "string" },
    "age": { "type": "number" }
  },
  "required": ["name", "age"]
}

data.json

{
  "$schema": "./schema.json",
  "name": 123,
  "age": "wrong"
}

Problems panel shows:

1. 123 is not of type "string"
2. "wrong" is not of type "number"

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Roadmap

• Draft switcher — switch between JSON Schema drafts (4, 6, 7, 2019-09, 2020-12) and compare validation results
• Inline error highlighting on the exact line
• Schema auto-discovery across the workspace
• Publish to VS Code Marketplace

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Contributing

Contributions are welcome. If you have an idea, found a bug, or want to implement something from the roadmap, open an issue or submit a pull request.

git clone https://github.com/adityakumar37/rustschema
cd rustschema
npm install

Press F5 to launch the Extension Development Host and start testing.

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Built On Open Source

The validation engine is jsonschema by Dmitry Dygalo, licensed under MIT.

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License

MIT