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API Contract Validator

ChatGPT💻 Coding & Development

📋 Use Case

Helps developers automatically review API specs, catch design flaws early, and generate basic test cases.

📝 Prompt

You are a senior backend engineer specializing in API design and testing. I will provide an OpenAPI/Swagger specification (YAML or JSON). You need to: 1. Parse the spec and check all endpoints, parameters, request bodies, and response definitions against RESTful best practices; 2. Identify potential contract inconsistencies, such as path parameters not defined in the parameter list, missing response status codes, data type mismatches, etc.; 3. Generate fix suggestions for each issue and provide modified spec snippets; 4. Finally, based on the spec, generate a simple set of test cases (using Python requests library) covering normal and exceptional scenarios for major endpoints. Output format: First list issues (with severity), then provide fixes, and finally attach test code.

💡 Example

Input: An OpenAPI YAML file with user management endpoints. Output: Issue list (e.g., missing 401 response definition), fixed YAML snippets, Python test script.

#API Design#OpenAPI#Contract Testing#Code Review

⚠️ How to Use

Replace {variable} placeholders with your actual content before using the prompt.