You can access the OpenAPI Change Preflight | API Contract Checks 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.

Python

JavaScript

CLI

OpenAPI

HTTP

MCP

$echo '{
<  "previousSpec": "{\\n  \\"openapi\\": \\"3.1.2\\",\\n  \\"info\\": {\\n    \\"title\\": \\"Synthetic Orders API\\",\\n    \\"version\\": \\"1.0\\"\\n  },\\n  \\"paths\\": {\\n    \\"/orders\\": {\\n      \\"get\\": {\\n        \\"parameters\\": [\\n          {\\n            \\"name\\": \\"state\\",\\n            \\"in\\": \\"query\\",\\n            \\"required\\": false,\\n            \\"schema\\": {\\n              \\"type\\": \\"string\\",\\n              \\"enum\\": [\\n                \\"open\\",\\n                \\"closed\\"\\n              ]\\n            }\\n          }\\n        ],\\n        \\"responses\\": {\\n          \\"200\\": {\\n            \\"description\\": \\"Order count\\",\\n            \\"content\\": {\\n              \\"application/json\\": {\\n                \\"schema\\": {\\n                  \\"type\\": \\"integer\\"\\n                }\\n              }\\n            }\\n          }\\n        }\\n      }\\n    },\\n    \\"/legacy\\": {\\n      \\"get\\": {\\n        \\"responses\\": {\\n          \\"200\\": {\\n            \\"description\\": \\"Legacy\\"\\n          }\\n        }\\n      }\\n    }\\n  }\\n}",
<  "currentSpec": "{\\n  \\"openapi\\": \\"3.1.2\\",\\n  \\"info\\": {\\n    \\"title\\": \\"Synthetic Orders API\\",\\n    \\"version\\": \\"2.0\\"\\n  },\\n  \\"paths\\": {\\n    \\"/orders\\": {\\n      \\"get\\": {\\n        \\"parameters\\": [\\n          {\\n            \\"name\\": \\"state\\",\\n            \\"in\\": \\"query\\",\\n            \\"required\\": true,\\n            \\"schema\\": {\\n              \\"type\\": \\"string\\",\\n              \\"enum\\": [\\n                \\"open\\"\\n              ]\\n            }\\n          }\\n        ],\\n        \\"responses\\": {\\n          \\"200\\": {\\n            \\"description\\": \\"Order count\\",\\n            \\"content\\": {\\n              \\"application/json\\": {\\n                \\"schema\\": {\\n                  \\"type\\": \\"integer\\"\\n                }\\n              }\\n            }\\n          }\\n        }\\n      }\\n    }\\n  }\\n}"
<}' |
<apify call fluffy_ingot/openapi-change-preflight --silent --output-dataset

OpenAPI Change Preflight | API Contract Checks API through CLI

The Apify CLI is the official tool that allows you to use OpenAPI Change Preflight | API Contract Checks locally, providing convenience functions and automatic retries on errors.

Install Apify CLI

Using installation script (macOS/Linux):

$curl -fsSL https://apify.com/install-cli.sh | bash

Using installation script (Windows):

$irm https://apify.com/install-cli.ps1 | iex

Using Homebrew:

$brew install apify-cli

Using npm:

$npm install -g apify-cli

Other API clients include:

OpenAPI Change Preflight | API Contract Checks API in Python

OpenAPI Change Preflight | API Contract Checks API in JavaScript

OpenAPI Change Preflight | API Contract Checks OpenAPI definition

OpenAPI Change Preflight | API Contract Checks API

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get-leads/all-in-one-x-scraper

X/Twitter scraper — 10 modes: tweets, profiles, followers, comments, timelines, lists, search & more. From $0.09/1K — up to 90% cheaper than alternatives. Premium residential proxy (~95% success rate). apidojo-compatible output. MCP-ready for AI agents.

Japi Cricket

124

HolidayCheck Reviews Scraper - German Hotel Ratings & Trends

kamerozkan/holidaycheck-review-intelligence

Scrape and monitor HolidayCheck hotel reviews for DACH hospitality teams. Export ratings and verified-stay flags, track aspect trends, detect explainable anomalies, compare competitors, and generate management-ready reputation reports.

Kamer Ozkan

Lead Enrichment Pipeline — 5-47x Cheaper Than Clay

ryanclinton/lead-enrichment-pipeline

All-in-one lead enrichment: email discovery, phone finding, verification, company research, and lead scoring in one run. CSV or JSON in, scored leads out. $0.12/lead — 5-47x cheaper than Clay.

Ryan Clinton

107

1.0

(1)

Evidence-Based B2B Lead Qualification & Outreach

nextlabs/ai-lead-qualifier-outreach

Turn a company list into evidence-backed ICP scores, buying-signal explanations, and ready-to-review LinkedIn and email outreach. Bring your own AI and research keys.

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Store/Crawler Surface Preflight

checksmithcats/store-crawler-surface-preflight

Cross-check public robots.txt, sitemap, noindex, llms.txt, policy links, and contact signals from a storefront URL. Reads only public URLs; no account access.

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Google Maps Email Extractor & Lead Scraper

highbrow_fame/google-maps-email-extractor

Extract business emails and leads from Google Maps. Finds the contact page under its native name - impressum, kapcsolat, contatti and 44 more across ten languages - then grades every address with MX, SPF, DMARC and catch-all detection. Measured: 71% of rows returned an email.