Why API Design Patterns Need Formal Contracts

from The API Podcast with Fexingo: REST, GraphQL, and Modern Web APIs · host Fexingo

Episode 45 of The API Podcast dives into the growing rift between informal design conventions and the push for machine-verifiable API contracts. Lucas and Luna examine how tools like OpenAPI 4.0, AsyncAPI, and JSON Schema enable automated validation, break fewer clients, and catch mismatches before they reach production. Through the example of a mid-size e-commerce platform that cut integration bugs by 67% by adopting contract-driven design, they explore why formal contracts matter even for small teams. The hosts also discuss the tension between speed and safety, and why 'design first' remains more aspiration than reality for most organizations. #API #APIDesign #OpenAPI #AsyncAPI #JSONSchema #WebAPI #REST #GraphQL #DeveloperExperience #Integration #SchemaEvolution #APIContracts #Technology #SoftwareEngineering #FexingoBusiness #BusinessPodcast #TheAPIPodcast #DesignFirst Keep every episode free: buymeacoffee.com/fexingo

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This episode is 10 minutes long.

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This episode was published on June 11, 2026.

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