JSON Schema Contract Change Radar
Pricing
$10.00 / 1,000 completed schema comparisons
Detect JSON Schema contract changes with validated counterexamples. Compare API inputs, MCP tool schemas and event payloads; export JSON evidence and CSV summaries. Supports draft-07 and 2020-12. No-witness results require review and do not prove compatibility.
You can access the JSON Schema Contract Change Radar programmatically from your own applications by using the Apify API. You can also choose the language preference from below. To use the Apify API, you’ll need an Apify account and your API token, found in API & Integrations in Apify Console.
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1from apify_client import ApifyClient2
3# Initialize the ApifyClient with your Apify API token4# Replace '<YOUR_API_TOKEN>' with your token.5client = ApifyClient("<YOUR_API_TOKEN>")6
7# Prepare the Actor input8run_input = {9 "comparisons": [{10 "name": "illustrative-order-minimum",11 "beforeSchema": {12 "$schema": "http://json-schema.org/draft-07/schema#",13 "type": "object",14 "properties": { "quantity": {15 "type": "integer",16 "minimum": 1,17 } },18 "required": ["quantity"],19 "additionalProperties": False,20 },21 "afterSchema": {22 "$schema": "http://json-schema.org/draft-07/schema#",23 "type": "object",24 "properties": { "quantity": {25 "type": "integer",26 "minimum": 2,27 } },28 "required": ["quantity"],29 "additionalProperties": False,30 },31 "candidates": [{ "quantity": 1 }],32 }],33 "maxCandidates": 128,34 "maxWitnesses": 5,35 "maxComparisonTimeMs": 2000,36 "maxRunTimeMs": 60000,37}38
39# Run the Actor and wait for it to finish40run = client.actor("danielmichalek/json-schema-contract-radar").call(run_input=run_input)41
42# Fetch and print Actor results from the run's dataset (if there are any)43print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")44for item in client.dataset(run.default_dataset_id).iterate_items():45 print(item)46
47# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-startThe Apify API client for Python is the official library that allows you to use JSON Schema Contract Change Radar API in Python, providing convenience functions and automatic retries on errors.
Install the apify-client
$pip install apify-clientOther API clients include: