Catch Config Errors Before They Ship

Enforce strict JSON schemas across all environments. Prevent runtime crashes, catch typos instantly, and guarantee configuration consistency at scale.

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Interactive Demo

See It In Action

Toggle between valid and invalid configurations to see real-time schema validation in action.

schema.json
                            
                            
                        

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "required": ["app_name", "version", "features"],
  "properties": {
    "app_name": {
      "type": "string",
      "pattern": "^[a-z0-9-]+$"
    },
    "version": {
      "type": "string",
      "pattern": "^\\d+\\.\\d+\\.\\d+$"
    },
    "features": {
      "type": "object",
      "properties": {
        "realtime_sync": { "type": "boolean" },
        "max_retries": { "type": "integer", "minimum": 1, "maximum": 10 }
      }
    }
  }
}
                    

config.json
                            
                            Validation Passed
                        

{
  "app_name": "payment-service",
  "version": "2.1.0",
  "features": {
    "realtime_sync": true,
    "max_retries": 5
  }
}
                    
⚠️ Line 2: Missing required property 'app_name'
⚠️ Line 3: Property 'version' must match pattern '^\\d+\\.\\d+\\.\\d$'
⚠️ Line 6: Property 'max_retries' must be between 1 and 10

🛡️

Strict Type Enforcement

Never ship a string when an integer is expected. Our validator catches type mismatches before deployment.

🔍

Custom Pattern Matching

Enforce naming conventions, URL formats, and environment-specific rules with regex validation.

🔄

CI/CD Integration

Block deployments that fail schema checks. Native support for GitHub Actions, GitLab CI, and Jenkins.

📐

Conditional Validation

Define rules that only apply in certain environments. Production gets stricter checks than staging.

⚡

Real-time IDE Linting

VS Code, JetBrains, and Neovim extensions provide instant feedback as you type configurations.

📊

Drift Detection

Automatically flag configurations that have drifted from their validated schema over time.

SDK & Integrations

Works With Your Stack

Validate configurations directly in your application code with our lightweight SDKs.

Node.js

npm install @appconfig/validator

Python

pip install appconfig-validator

go get github.com/appconfig/validator

Rust

cargo add appconfig-validator

Kotlin

implementation 'io.appconfig:validator'

CLI

npx appconfig validate ./config

Never Ship Broken Configs Again

Join 10,000+ teams using schema validation to eliminate configuration-related incidents. Start validating today.

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