The AWS CloudFormation Language Server provides auto-completion, validation, navigation, and refactoring for CloudFormation templates. The server implements the Language Server Protocol (LSP) to enable code editors to offer intelligent editing support for JSON and YAML Infrastructure as Code templates.
- Resource Types - Auto-completes AWS resource types with fuzzy matching
- Properties - Context-aware property suggestions for CloudFormation resources
- Intrinsic Functions - Function names and parameter suggestions
- Parameters & References - Template parameters, conditions, and mappings
- Template Sections - Top-level CloudFormation sections
- Syntax - Immediate feedback on JSON and YAML syntax errors
- Schema - CloudFormation resource schema enforcement with regional support
- cfn-lint - Python-based linting with comprehensive rules
- AWS Guard - Policy-as-code validation for security and compliance
- Quick Fixes - Fixes for common template errors
- Extract to Parameter - Refactors hardcoded values into template parameters
- Related Resources - Inserts related AWS resources based on template context
- Diagnostic Actions - Actionable suggestions for validation errors
- Hover Documentation - Contextual help for resources, properties, and functions
- Go-to-Definition - Navigate to CloudFormation reference definitions
- Document Symbols - Template structure navigation and outline view
- Parameter Information - Type and constraint documentation
- Stack Operations - List and manage CloudFormation stacks
- Resource Discovery - Browse available AWS resource types by region
- Template Validation - Server-side template validation using CloudFormation
- Template Deployment - Deploy templates directly from the editor
- Resource State Import - Import existing AWS resources into templates
- Clone Resource - Create new resources using existing resource configurations as reference
- IaC Generator - Scan AWS accounts and generate CloudFormation templates from existing resources
- Artifact Export - Export and upload template artifacts to S3 for deployment
- Validate and Deploy - Validate and deploy templates with a single click
- Open Stack Template - Open managed stack templates for resources
- Multi-Format Support - JSON and YAML CloudFormation template processing
- Partial Parsing - Completion in incomplete or malformed templates
- Regional Schemas - Automatic schema retrieval and caching for different AWS regions
- Tree-sitter Parsing - Fast and accurate syntax parsing
The CloudFormation Language Server collects anonymous usage metrics. See Telemetry for details on what is collected and how to control telemetry settings.
This project is licensed under the Apache License, Version 2.0. See LICENSE for details.
