--- id: video/K8nFVw5M-Po type: video title: "Business Central Under the Hood Special Edition: The Future of AL with Vibe Coding" summary: "Vibe coding for AL in VS Code agent mode: demos of generating AL objects from natural language and specifications, context and model choices, MCP servers, and the stated roadmap for compile, publish and test tools. Presented as usable for production-grade coding as a productivity tool." tier: official language: en tags: - vibe coding - ai-assisted development - agent mode - github copilot - al code generation - specification-driven development - context management - extension development - validation logic - table extensions - prompt engineering - compiler tools system: development review: state: reviewed by: opus at: "2026-10-07T22:55:27.162Z" flags: [] generated: at: "2026-10-07T22:55:27.215Z" pipeline: 0.2.0 prompts: extract-video: 1 summarize-video: 2 input_hash: bf4e2cc9cae8e49d04cb0387304bb036b117989e0009407f4d965ed3ae443560 evidence: - kind: video url: https://www.youtube.com/watch?v=K8nFVw5M-Po&t=166s title: "GPT-5 Preview Model Selection: preview" date: "2025-09-12T14:00:27.000Z" commit: null t: 166 quote: I like the GT5 preview right now uh because that's one of the newest models - kind: video url: https://www.youtube.com/watch?v=K8nFVw5M-Po&t=57s title: "Business Central Under the Hood Special Edition: The Future of AL with Vibe Coding" date: "2025-09-12T14:00:27.000Z" commit: null t: 57 quote: basically it's just uh using AI to help you code, right? So help you get started with your coding and get get things going. - kind: video url: https://www.youtube.com/watch?v=K8nFVw5M-Po&t=86s title: "Business Central Under the Hood Special Edition: The Future of AL with Vibe Coding" date: "2025-09-12T14:00:27.000Z" commit: null t: 86 quote: we're taking it one step further using the agent mode in in VS code here or in other tools and we are letting the - kind: video url: https://www.youtube.com/watch?v=K8nFVw5M-Po&t=166s title: "Business Central Under the Hood Special Edition: The Future of AL with Vibe Coding" date: "2025-09-12T14:00:27.000Z" commit: null t: 166 quote: I like the GT5 preview right now uh because that's one of the newest models you can choose from a lot of other models - kind: video url: https://www.youtube.com/watch?v=K8nFVw5M-Po&t=510s title: "Business Central Under the Hood Special Edition: The Future of AL with Vibe Coding" date: "2025-09-12T14:00:27.000Z" commit: null t: 510 quote: going in and manipulating small details that are in your existing application that maybe has a lot of years on it or complex design, - kind: video url: https://www.youtube.com/watch?v=K8nFVw5M-Po&t=647s title: "Business Central Under the Hood Special Edition: The Future of AL with Vibe Coding" date: "2025-09-12T14:00:27.000Z" commit: null t: 647 quote: that's where you get to the true vibe coding where you don't need to look at the actual code. You talk about the spec. - kind: video url: https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1519s title: "Business Central Under the Hood Special Edition: The Future of AL with Vibe Coding" date: "2025-09-12T14:00:27.000Z" commit: null t: 1519 quote: compile is one of them. We also are thinking maybe we should add the ability to publish it and we're looking into test execution. - kind: video url: https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1543s title: "Business Central Under the Hood Special Edition: The Future of AL with Vibe Coding" date: "2025-09-12T14:00:27.000Z" commit: null t: 1543 quote: We are actually working on that right now. So that's in the scope right now. - kind: video url: https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1566s title: "Business Central Under the Hood Special Edition: The Future of AL with Vibe Coding" date: "2025-09-12T14:00:27.000Z" commit: null t: 1566 quote: So what we are working alo on also is adding MCP servers. So the model context protocol for giving the agents more context to - kind: video url: https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1583s title: "Business Central Under the Hood Special Edition: The Future of AL with Vibe Coding" date: "2025-09-12T14:00:27.000Z" commit: null t: 1583 quote: It's basically a standard um it's an open source standard right uh and it's um it's it's mostly a discovery mechanism that allows agents - kind: video url: https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1698s title: "Business Central Under the Hood Special Edition: The Future of AL with Vibe Coding" date: "2025-09-12T14:00:27.000Z" commit: null t: 1698 quote: we are thinking about adding even more like the one we have for business central is more about getting access to the customer data - kind: video url: https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1845s title: "Business Central Under the Hood Special Edition: The Future of AL with Vibe Coding" date: "2025-09-12T14:00:27.000Z" commit: null t: 1845 quote: Is that something that uh you you would recommend people use also for production uh production grade coding? Yes. Yeah, absolutely. - kind: video url: https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1867s title: "Business Central Under the Hood Special Edition: The Future of AL with Vibe Coding" date: "2025-09-12T14:00:27.000Z" commit: null t: 1867 quote: This is a productivity tool. It will help you do all the tedious, the scaffolding, all the the things that you have to do - kind: video url: https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1916s title: "Business Central Under the Hood Special Edition: The Future of AL with Vibe Coding" date: "2025-09-12T14:00:27.000Z" commit: null t: 1916 quote: different tools you should try you should try which one actually works for you there's a bit of a of you know a taste - kind: video url: https://www.youtube.com/watch?v=K8nFVw5M-Po&t=2022s title: "Business Central Under the Hood Special Edition: The Future of AL with Vibe Coding" date: "2025-09-12T14:00:27.000Z" commit: null t: 2022 quote: if if you're just working on creating permission sets this might replace that but i think we as developers are links: learn: [] objects: - object/table/18 features: [] topics: [] localizations: [] videos: [] posts: [] guidelines: [] video_id: K8nFVw5M-Po channel: yt-microsoft source_name: Microsoft Dynamics 365 Business Central (YouTube) url: https://www.youtube.com/watch?v=K8nFVw5M-Po published_at: "2025-09-12T14:00:27.000Z" duration_s: 2117 captions: full audience: - developer - functional consultant - decision maker chapters: - t: 0 title: Introduction to Vibe Coding - t: 72 title: Vibe Coding vs GitHub Copilot and Agent Mode - t: 114 title: "Hello World Demo: Adding Shoe Size to Customer" - t: 270 title: Vibe Coding Capabilities and AL Support - t: 354 title: Validation Example and Developer Mindset - t: 442 title: Real World Application and Scenario Selection - t: 556 title: Context and Specification Approach - t: 637 title: Property Rental Specification Example and Agent Reasoning - t: 890 title: Agent specification generation for property management - t: 1009 title: Agent code generation and vibe coding approach - t: 1104 title: Iterative vibe coding versus traditional coding - t: 1240 title: Production code quality, debugging, and compiler enhancements - t: 1553 title: Model Context Protocol, configuration, and future of vibe coding features: - name: Vibe Coding with Agent Mode status: unclear t: 72 verified: false status_source: video - name: GPT-5 Preview Model Selection status: preview t: 154 verified: true status_source: video - name: Automatic ID Range Resolution status: unclear t: 186 verified: false status_source: video - name: Checkpoint and Rollback System status: unclear t: 391 verified: false status_source: video - name: Context-Aware Code Generation status: unclear t: 556 verified: false status_source: video - name: Specification-First Development Approach status: unclear t: 637 verified: false status_source: video - name: Agent Question Generation status: unclear t: 814 verified: false status_source: video - name: Business Central Product Knowledge Integration status: unclear t: 830 verified: false status_source: video - name: AI Prompt Refinement status: unclear t: 794 verified: false status_source: video - name: Agent Code Generation status: unclear t: 1009 verified: false status_source: video - name: Iterative Vibe Coding Workflow status: unclear t: 1104 verified: false status_source: video - name: AL Compiler Integration with Agents status: unclear t: 1323 verified: false status_source: video - name: Agent Compilation Tool status: unclear t: 1489 verified: false status_source: video - name: Agent Publish and Test Execution Tools status: unclear t: 1519 verified: false status_source: video - name: Model Context Protocol Integration status: unclear t: 1553 verified: false status_source: video - name: Business Central Documentation MCP Server status: unclear t: 1614 verified: false status_source: video - name: Environment Metadata MCP Server status: unclear t: 1698 verified: false status_source: video - name: Custom MCP Servers status: unclear t: 1751 verified: false status_source: video - name: Chat Configuration and Custom Instructions status: unclear t: 1773 verified: false status_source: video - name: Vibe Coding for Production status: unclear t: 1845 verified: false status_source: video - name: Multiple AI Model Support status: unclear t: 1905 verified: false status_source: video objects_mentioned: - table Customer - other app JSON - table Customer table - other properties leases - page pages - codeunit code units quotes: - t: 57 text: basically it's just uh using AI to help you code, right? So help you get started with your coding and get get things going. check: exact - t: 86 text: we're taking it one step further using the agent mode in in VS code here or in other tools and we are letting the check: exact - t: 166 text: I like the GT5 preview right now uh because that's one of the newest models you can choose from a lot of other models check: exact - t: 510 text: going in and manipulating small details that are in your existing application that maybe has a lot of years on it or complex design, check: exact - t: 647 text: that's where you get to the true vibe coding where you don't need to look at the actual code. You talk about the spec. check: exact - t: 1519 text: compile is one of them. We also are thinking maybe we should add the ability to publish it and we're looking into test execution. check: exact - t: 1543 text: We are actually working on that right now. So that's in the scope right now. check: exact - t: 1566 text: So what we are working alo on also is adding MCP servers. So the model context protocol for giving the agents more context to check: exact - t: 1583 text: It's basically a standard um it's an open source standard right uh and it's um it's it's mostly a discovery mechanism that allows agents check: exact - t: 1698 text: we are thinking about adding even more like the one we have for business central is more about getting access to the customer data check: exact - t: 1845 text: Is that something that uh you you would recommend people use also for production uh production grade coding? Yes. Yeah, absolutely. check: exact - t: 1867 text: This is a productivity tool. It will help you do all the tedious, the scaffolding, all the the things that you have to do check: exact - t: 1916 text: different tools you should try you should try which one actually works for you there's a bit of a of you know a taste check: exact - t: 2022 text: if if you're just working on creating permission sets this might replace that but i think we as developers are check: fuzzy --- # Business Central Under the Hood Special Edition: The Future of AL with Vibe Coding > Vibe coding for AL in VS Code agent mode: demos of generating AL objects from natural language and specifications, context and model choices, MCP servers, and the stated roadmap for compile, publish and test tools. Presented as usable for production-grade coding as a productivity tool. [Watch on YouTube](https://www.youtube.com/watch?v=K8nFVw5M-Po) · Microsoft Dynamics 365 Business Central (YouTube) · 2025-09-12 · 35:17 · tier official · reviewed (checked by Opus) ## Overview The session explains vibe coding as using AI, through agent mode in VS Code, to generate AL code from natural language requests and written specifications. It starts with a small demo that adds a shoe size field to the Customer table, where the agent reads app.json to pick the right ID range, then moves to a property rental example. There the agent asks clarifying questions, writes a specification and generates tables, pages, codeunits and permissions. The presenters cover how to give the agent context (file references, symbols, readme files, chat instructions), how to pick among models such as GPT-5 preview, and how compiler diagnostics feed into generation. They also describe MCP servers, including a Business Central documentation server, and say that compile, publish and test tools and an environment metadata MCP server are still being worked on. ## Key points - Agent mode in VS Code reads app.json to resolve ID ranges and creates table extensions, page extensions and other scaffolding from a natural language request. - The agent can be asked to produce 10 or more clarifying questions and then a specification before it writes code; specs can be saved in files. - Context can be narrowed with file references, symbols, documentation and readme files, and chat instructions or prompt files can hold company coding rules and naming conventions. - Generated code can contain errors and may not follow guidelines perfectly. The agent has no compile method to call and relies on diagnostics produced while it builds, so error messages sometimes have to be fed back by hand. - Checkpoints let you review each stage and restore an earlier one if the agent goes off track. - A Business Central documentation MCP server was shown, and you can add your own MCP servers. An environment metadata MCP server, a compile tool, and publish and test tools were described as planned or in development. - The presenters recommend it for production-grade coding as a productivity tool for scaffolding and tedious tasks. It is harder to use on complex existing applications with many years of development. ## Chapters - [0:00](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=0s) Introduction to Vibe Coding - [1:12](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=72s) Vibe Coding vs GitHub Copilot and Agent Mode - [1:54](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=114s) Hello World Demo: Adding Shoe Size to Customer - [4:30](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=270s) Vibe Coding Capabilities and AL Support - [5:54](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=354s) Validation Example and Developer Mindset - [7:22](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=442s) Real World Application and Scenario Selection - [9:16](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=556s) Context and Specification Approach - [10:37](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=637s) Property Rental Specification Example and Agent Reasoning - [14:50](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=890s) Agent specification generation for property management - [16:49](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1009s) Agent code generation and vibe coding approach - [18:24](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1104s) Iterative vibe coding versus traditional coding - [20:40](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1240s) Production code quality, debugging, and compiler enhancements - [25:53](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1553s) Model Context Protocol, configuration, and future of vibe coding ## Features | Feature | Status | At | Evidence | |---|---|---|---| | Vibe Coding with Agent Mode | status not stated, demoed | [1:12](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=72s) | | | GPT-5 Preview Model Selection | preview, demoed | [2:34](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=154s) | "I like the GT5 preview right now uh because that's one of the newest models" ([2:46](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=166s)) | | Automatic ID Range Resolution | status not stated, demoed | [3:06](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=186s) | | | Checkpoint and Rollback System | status not stated, demoed | [6:31](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=391s) | | | Context-Aware Code Generation | status not stated, demoed | [9:16](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=556s) | | | Specification-First Development Approach | status not stated, demoed | [10:37](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=637s) | | | Agent Question Generation | status not stated, demoed | [13:34](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=814s) | | | Business Central Product Knowledge Integration | status not stated, demoed | [13:50](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=830s) | | | AI Prompt Refinement | status not stated, demoed | [13:14](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=794s) | | | Agent Code Generation | status not stated, demoed | [16:49](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1009s) | | | Iterative Vibe Coding Workflow | status not stated, demoed | [18:24](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1104s) | | | AL Compiler Integration with Agents | status not stated, demoed | [22:03](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1323s) | | | Agent Compilation Tool | status not stated | [24:49](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1489s) | | | Agent Publish and Test Execution Tools | status not stated | [25:19](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1519s) | | | Model Context Protocol Integration | status not stated, demoed | [25:53](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1553s) | | | Business Central Documentation MCP Server | status not stated, demoed | [26:54](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1614s) | | | Environment Metadata MCP Server | status not stated | [28:18](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1698s) | | | Custom MCP Servers | status not stated, demoed | [29:11](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1751s) | | | Chat Configuration and Custom Instructions | status not stated, demoed | [29:33](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1773s) | | | Vibe Coding for Production | status not stated | [30:45](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1845s) | | | Multiple AI Model Support | status not stated, demoed | [31:45](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1905s) | | ## AL objects mentioned As heard in the captions. A name that matches one object page by exact type and name links to it; the others stay as named. - [table 18 "Customer"](../objects/table/18.md) at [2:24](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=144s) - other "app JSON" at [3:16](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=196s) - table "Customer table" at [14:03](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=843s) - other "properties leases" at [15:38](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=938s) - page "pages" at [17:28](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1048s) - codeunit "code units" at [17:28](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1048s) Not found in BC28-30: table "Customer table", page "pages", codeunit "code units". ## Quotes - [0:57](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=57s) "basically it's just uh using AI to help you code, right? So help you get started with your coding and get get things going." - [1:26](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=86s) "we're taking it one step further using the agent mode in in VS code here or in other tools and we are letting the" - [2:46](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=166s) "I like the GT5 preview right now uh because that's one of the newest models you can choose from a lot of other models" - [8:30](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=510s) "going in and manipulating small details that are in your existing application that maybe has a lot of years on it or complex design," - [10:47](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=647s) "that's where you get to the true vibe coding where you don't need to look at the actual code. You talk about the spec." - [25:19](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1519s) "compile is one of them. We also are thinking maybe we should add the ability to publish it and we're looking into test execution." - [25:43](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1543s) "We are actually working on that right now. So that's in the scope right now." - [26:06](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1566s) "So what we are working alo on also is adding MCP servers. So the model context protocol for giving the agents more context to" - [26:23](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1583s) "It's basically a standard um it's an open source standard right uh and it's um it's it's mostly a discovery mechanism that allows agents" - [28:18](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1698s) "we are thinking about adding even more like the one we have for business central is more about getting access to the customer data" - [30:45](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1845s) "Is that something that uh you you would recommend people use also for production uh production grade coding? Yes. Yeah, absolutely." - [31:07](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1867s) "This is a productivity tool. It will help you do all the tedious, the scaffolding, all the the things that you have to do" - [31:56](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1916s) "different tools you should try you should try which one actually works for you there's a bit of a of you know a taste" - [33:42](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=2022s) "if if you're just working on creating permission sets this might replace that but i think we as developers are" ## Disclaimers in the video - [2:46](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=166s) preview: I like the GT5 preview right now uh because that's one of the newest models - [24:13](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1453s) other: there is no compile method for the agent to call it relies on the diagnostics to be produced while it's building - [25:08](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1508s) coming-later: We need to give the agent more tools compile is one of them We also are thinking maybe we should add the ability to publish - [28:18](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1698s) coming-later: we are thinking about adding even more like the one we have for business central is more about getting access to the customer data right but we need to add an MCP server that gives you access to the the environment metadata - [28:39](https://www.youtube.com/watch?v=K8nFVw5M-Po&t=1719s) coming-later: we want to broaden that out so you can actually develop even more with this metadata MCP server Presenters (as heard): Stefan, unknown speaker 1, unknown speaker 2.