EPISODE · Jun 8, 2026 · 10 MIN
How API Spec Languages Reduce Integration Errors
from The Developer Tools Podcast with Fexingo: APIs, Infrastructure, and Software for Engineers · host Fexingo
Lucas and Luna dive into how OpenAPI, AsyncAPI, and gRPC's protobuf specs can catch integration errors before they hit production. They examine a case where a fintech startup's manual documentation led to a $2 million settlement loss, and how adopting a machine-readable spec language could have prevented it. They also discuss the trade-offs between spec-first and code-first approaches, and why even mature teams sometimes skip specs under deadline pressure. No abstract theory—just concrete examples of spec languages reducing bugs, improving developer experience, and saving money. If you've ever argued about whether to document your API before writing code, this episode is for you. #OpenAPI #AsyncAPI #gRPC #Protobuf #APISpec #IntegrationErrors #DeveloperExperience #Fintech #SettlementLoss #SpecFirst #CodeFirst #APIDocumentation #Business #Technology #FexingoBusiness #BusinessPodcast #DeveloperToolsPodcast #APIs Keep every episode free: buymeacoffee.com/fexingo
What this episode covers
Lucas and Luna dive into how OpenAPI, AsyncAPI, and gRPC's protobuf specs can catch integration errors before they hit production. They examine a case where a fintech startup's manual documentation led to a $2 million settlement loss, and how adopting a machine-readable spec language could have prevented it. They also discuss the trade-offs between spec-first and code-first approaches, and why even mature teams sometimes skip specs under deadline pressure. No abstract theory—just concrete examples of spec languages reducing bugs, improving developer experience, and saving money. If you've ever argued about whether to document your API before writing code, this episode is for you. #OpenAPI #AsyncAPI #gRPC #Protobuf #APISpec #IntegrationErrors #DeveloperExperience #Fintech #SettlementLoss #SpecFirst #CodeFirst #APIDocumentation #Business #Technology #FexingoBusiness #BusinessPodcast #DeveloperToolsPodcast #APIs Keep every episode free: buymeacoffee.com/fexingo
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How API Spec Languages Reduce Integration Errors
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