JSON Contract Smoke Test
Format raw JSON, generate a draft schema, then validate payloads against that schema.
Use case
Use this when onboarding a new endpoint and you want a quick first-pass contract check.
What to expect
Follow the steps from left to right for a quick overview, then use the inline stepper below to run each tool.
Format raw JSON, generate a draft schema, then validate payloads against that schema.
JSON Formatter (Pretty Print)
JSON → JSON
Format JSON
Readable, pretty-printed JSON output.
JSON Schema Generator
JSON → JSON-SCHEMA
Generate schema
Review the result here before moving to the next step.
JSON Schema Validator
JSON / JSON-SCHEMA → JSON
Validate schema
Validation report. The original data value is passed to the next step.
Workflow steps
Workflow shortcut
Next unlocked step: Step 1 · JSON Formatter (Pretty Print)
JSON Formatter (Pretty Print)
Pretty-print JSON with consistent indentation.
JSON input
Paste raw or minified JSON.
Formatted JSON
Readable, pretty-printed JSON output.
Run this step to process the current input and prepare the next workflow stage.
JSON Schema Generator
Generate a draft JSON Schema from sample JSON input.
JSON input
Provide json input for this workflow step.
JSON-SCHEMA output
Review the result here before moving to the next step.
Run this step to process the current input and prepare the next workflow stage.
JSON Schema Validator
Validate JSON data against a provided JSON Schema.
Schema validation input
Provide { "schema": { ...jsonSchema }, "data": <value> }, or paste raw JSON to auto-validate against a generated schema.
Schema validation result
Validation report. The original data value is passed to the next step.
Run this step to process the current input and prepare the next workflow stage.