JSON Schema Contract Change Radar
Pricing
$10.00 / 1,000 completed schema comparisons
Detect JSON Schema contract changes with validated counterexamples. Compare API inputs, MCP tool schemas and event payloads; export JSON evidence and CSV summaries. Supports draft-07 and 2020-12. No-witness results require review and do not prove compatibility.
You can access the JSON Schema Contract Change Radar programmatically from your own applications by using the Apify API. You can also choose the language preference from below. To use the Apify API, you’ll need an Apify account and your API token, found in API & Integrations in Apify Console.
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1import { ApifyClient } from 'apify-client';2
3// Initialize the ApifyClient with your Apify API token4// Replace the '<YOUR_API_TOKEN>' with your token5const client = new ApifyClient({6 token: '<YOUR_API_TOKEN>',7});8
9// Prepare Actor input10const input = {11 "comparisons": [12 {13 "name": "illustrative-order-minimum",14 "beforeSchema": {15 "$schema": "http://json-schema.org/draft-07/schema#",16 "type": "object",17 "properties": {18 "quantity": {19 "type": "integer",20 "minimum": 121 }22 },23 "required": [24 "quantity"25 ],26 "additionalProperties": false27 },28 "afterSchema": {29 "$schema": "http://json-schema.org/draft-07/schema#",30 "type": "object",31 "properties": {32 "quantity": {33 "type": "integer",34 "minimum": 235 }36 },37 "required": [38 "quantity"39 ],40 "additionalProperties": false41 },42 "candidates": [43 {44 "quantity": 145 }46 ]47 }48 ],49 "maxCandidates": 128,50 "maxWitnesses": 5,51 "maxComparisonTimeMs": 2000,52 "maxRunTimeMs": 6000053};54
55// Run the Actor and wait for it to finish56const run = await client.actor("danielmichalek/json-schema-contract-radar").call(input);57
58// Fetch and print Actor results from the run's dataset (if any)59console.log('Results from dataset');60console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);61const { items } = await client.dataset(run.defaultDatasetId).listItems();62items.forEach((item) => {63 console.dir(item);64});65
66// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docsThe Apify API client for JavaScript is the official library that allows you to use JSON Schema Contract Change Radar API in JavaScript or TypeScript, providing convenience functions and automatic retries on errors.
Install the apify-client
$npm install apify-clientOther API clients include: