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Aug 7, 2026 8 min

Why Your API Should Speak JSON Schema

from The API Podcast with Fexingo: REST, GraphQL, and Modern Web APIs Hosted by Fexingo

JSON Schema is quietly becoming the contract layer for modern APIs, and in this episode Lucas and Luna break down why it matters right now. They start with a concrete case: a fintech team using JSON Schema to validate payment payloads before they ever hit the database, cutting bad requests by 30 percent. From there they unpack how JSON Schema gives you a single source of truth that powers validation, documentation, and mock servers — and how it complements OpenAPI rather than replacing it. They also dig into the trade-offs: the learning curve, the verbosity, and the risk of schema drift when teams treat it as paperwork instead of code. Along the way they mention real-world tools like Ajv, the JSON Schema Test Suite, and the emerging JSON Schema 2020-12 draft. If you've ever wondered why your API docs drift from reality, or how to make your contracts testable, this one's for you. #JsonSchema #ApiDesign #ApiValidation #OpenApi #ApiContract #DeveloperTools #Ajv #ApiDocumentation #MockServers #ApiTesting #TechPodcast #SoftwareEngineering #WebDevelopment #ApiDevelopment #FexingoBusiness #BusinessPodcast #Technology #ApiPodcast Keep every episode free: buymeacoffee.com/fexingo

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This episode was published on August 7, 2026.

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