The B2B Podcast Index
Index
All categories
MarketingSalesSaaSFinanceHROpsLeadershipCustomer SuccessAI & DataProductStartups & FoundersRevOpsEngineering & DevTools
MethodologySubmit
Best of:MarketingSalesSaaSFinanceHROpsLeadershipCustomer SuccessAI & DataProductStartups & FoundersRevOpsEngineering & DevTools
An independent project byFame
SearchBest episodesGuestsInsightsMethodologySubmit a podcast
Index/Engineering & DevTools/The Developer Tools Podcast with Fexingo
The Developer Tools Podcast with Fexingo artwork

Why Your API Specs Should Be Executable Contracts

The Developer Tools Podcast with Fexingo · 2026-07-19 · 9 min

0:00--:--

Topics in this episode

PrismOpenAPIapi specificationsexecutable contractsmock servers

Episode notes

Lucas and Luna explore why treating API specifications as executable contracts - not just documentation - saves teams hours of integration pain. They dissect how OpenAPI specs, when paired with tools like Prism or Stoplight, can be run as mock servers that validate requests and responses before a single line of backend code is written. The episode zooms in on a real-world example: a fintech startup that cut its integration cycle from six weeks to four days by making its spec the source of truth for both frontend and backend teams. Lucas argues this shifts the developer experience from 'read then code' to 'run then confirm,' while Luna pushes back on the overhead of maintaining dual sources of truth. The conversation covers the trade-offs of spec-driven development, including how to handle versioning and when a static document is still better than a live one. Tune in for a practical take on how to bridge the gap between design and implementation.

Related episodes across the Index

Other episodes covering the same guests and topics, from across The B2B Podcast Index.

  • Steven Goldfeder(Arbitrum) on Why the World's Biggest Institutions Are Coming On-Chainthe un# podcast · on Prism76 / 100
  • #300: Are Semantic Layers Really Necessary?The Analytics Power Hour · on Prism68 / 100
  • SE Radio 726: Scott Kingsley on the Swagger EcosystemSoftware Engineering Radio · on Prism65 / 100

More from The Developer Tools Podcast with Fexingo

All episodes →
  • Why Your API Should Support Cursor Pagination
  • Why Your API Should Use Long Polling for Real-Time Updates
  • Why Your API Needs a Backward-Compatible Versioning Strategy
  • How to Sell Your API to a Billion-Dollar Platform
  • Why Your API Needs a Webhook Signature Verification
Explore the best B2B Engineering & DevTools podcasts →
All The Developer Tools Podcast with Fexingo episodes →