--- title: Building AI Features with the OpenAI Responses API in... description: A guide to integrating the OpenAI Responses API into ASP.NET Core applications. Covers project setup, creating a dedicated AI service, exposing API endpoints,... canonical: https://daily.dev/posts/building-ai-features-with-the-openai-responses-api-in-asp-net-core-wbgjbysma twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Building AI Features with the OpenAI Responses API in ASP.NET Core | daily.dev og:description: A guide to integrating the OpenAI Responses API into ASP.NET Core applications. Covers project setup, creating a dedicated AI service, exposing API endpoints,... og:url: https://daily.dev/posts/building-ai-features-with-the-openai-responses-api-in-asp-net-core-wbgjbysma og:image: https://api.daily.dev/og/posts/wBGJbYsMA.png og:image:alt: Building AI Features with the OpenAI Responses API in ASP.NET Core og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Building AI Features with the OpenAI Responses API in ASP.NET Core **[C\# Corner](https://daily.dev/sources/csharpcorner)** · 4 min read · 1 upvotes · 0 comments ## Summary A guide to integrating the OpenAI Responses API into ASP.NET Core applications. Covers project setup, creating a dedicated AI service, exposing API endpoints, and a practical customer support example. Also includes best practices for securing API keys, validating input, handling errors, and caching responses. The unified Responses API supports chatbots, summarization, content generation, translation, and more from a single endpoint. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [The Core Building Blocks Explained](https://daily.dev/posts/the-core-building-blocks-explained-1o2g8pooq) · .NET Blog · 2 upvotes · 0 comments - [The Unexpected AI Stack: C\# \+ .NET \(Part 3\)](https://daily.dev/posts/the-unexpected-ai-stack-c-net-part-3--silxqutsc) · ITNEXT · 0 upvotes · 0 comments --- Tags: [#ai](https://daily.dev/tags/ai), [#openai](https://daily.dev/tags/openai), [#bots](https://daily.dev/tags/bots), [#c#](https://daily.dev/tags/c#), [#aspnet](https://daily.dev/tags/aspnet) [View this post on daily.dev](https://daily.dev/posts/building-ai-features-with-the-openai-responses-api-in-asp-net-core-wbgjbysma) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Building AI Features with the OpenAI Responses API in ASP.NET Core","url":"https://daily.dev/posts/building-ai-features-with-the-openai-responses-api-in-asp-net-core-wbgjbysma","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/building-ai-features-with-the-openai-responses-api-in-asp-net-core-wbgjbysma"},"datePublished":"2026-07-20T06:47:08.138Z","dateModified":"2026-09-13T19:15:45.048Z","description":"A guide to integrating the OpenAI Responses API into ASP.NET Core applications. 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