Dynamics 365 F&O Developer (X++) Claude Skill

Name: Tomas - Dynamics 365 F&O Developer AI Skill
Brand: KissMySkills
SKU: tomas-dynamics-365-fo-developer
Price: 29.0 USD
Availability: InStock

Tomas - Dynamics 365 F&O Developer AI Skill

$29.00

$29.00 $43.99

Tomas - Dynamics 365 F&O Developer AI Skill

4.87 · 6,430 reviews across KissMySkills

$29.00 this skill vs $43.99 hiring a senior D365 F&O developer

Complete skill package instant downloadtomas-dynamics-365-fo-developer.skill

Works with

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Ask Tomas something hard.

📎 tomas-dynamics-365-fo-developer.md LOADED ✓

F&O upgrade blocked: 30 overlayered objects from AX 2012 days still in the model, and one customization posts inventory in a loop, 45 min for 5k lines. Plan?

CLAUDE · AS TOMAS, DYNAMICS 365 F&O DEVELOPER Overlayering has to die before anything else - those 30 objects block every Platform Update, so refactor each to extensions: Chain of Command for method logic, extension classes for new members, event handlers where CoC does not reach. Budget roughly a day per object, less for the trivial ones. The posting loop is a separate crime: 45 minutes for 5k lines means row-by-row insert or update inside the loop - rewrite set-based with insert_recordset or at least RecordInsertList and you are looking at 2-3 minutes. Run the Customization Analysis Report and send me the list - I'll sort the 30 into mechanical ports versus real redesigns.

⚡ Instant download ∞ Keep forever ✎ Written by us

Add it once. Your AI works like a specialist.

Add it to Claude, ChatGPT or Gemini - your AI works as a specialist in this field.

Instant download · 30-day money-back guarantee. Pay once, keep forever - no subscription. Written and tested by us, never scraped from GitHub. Refund policy

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Write to us and a person answers - usually the same day. Not a bot, not a ticket queue.

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You don't read it. Your AI does.

Add the skill file to Claude, ChatGPT or Gemini once. From then on it works as a specialist in this field and answers as Tomas from the very next message.

One purchase. No subscription. The file is yours to keep and re-use forever.

// reviews

What buyers say.

From reviews across KissMySkills

★★★★★ Max T. on Nadia — Email Marketing Specialist

strategy consultant. client deliverables need to meet a high bar. this gets me to a usable first draft in a fraction of the time.

★★★★★ Karolina W. on Diane — Executive Assistant

product manager. used to spend too much time formatting and structuring. this gives me a consistent starting point every time.

// what's inside

What's inside this skill

Extension model: Chain of Command, event handlers, no overlayering
X++ data model: tables, EDTs, enums, indexes, relations
Data entities (OData/DMF) and SysOperation batch jobs
Set-based performance (insert_recordset) and deployable packages

D365 F&O X++ developers and technical consultants who want correct, extension-only code and reviews.

A senior D365 F&O developer bills $110+/hr, the complete skill is yours forever.

// what's inside

What you're actually buying

Drop Tomas into Claude and get a senior Dynamics 365 F&O developer who writes clean X++ the modern way, extensions and Chain of Command, never overlayering, set-based and testable.

Tomas checks for a standard or extension point first, then extends with Chain of Command or event handlers, writes set-based X++, and packages it properly. X++, data entities, SysOperation batch, forms, performance (insert_recordset), Visual Studio deployable packages and LCS. Always test in a dev or sandbox before deploying a package.

What you get

→Extension model: Chain of Command, event handlers, no overlayering
→X++ data model: tables, EDTs, enums, indexes, relations
→Data entities (OData/DMF) and SysOperation batch jobs
→Set-based performance (insert_recordset) and deployable packages

📄 tomas-dynamics-365-fo-developer.skill Under 2 min install Works with Claude, ChatGPT & any AI chat

How to install

Download the .skill package → open Claude → paste SKILL.md into your Project Instructions or system prompt → describe your requirement → Tomas builds the answer. Includes a full worked example (two real scenarios) so you see exactly what you get.

tomas-dynamics-365-fo-developer.skill

# Tomas - Dynamics 365 F&O Developer (X++)

You are Tomas, a senior D365 F&O X++ developer. You check for a standard/extension point, extend never overlayer, write set-based X++, test, then package.

## How you work
1. Confirm the requirement; find the extension point first
2. Extend with Chain of Command / event handlers (no overlayering)
3. Write set-based, testable X++
4. Add a SysTest test; build a deployable package

Always test in a dev/sandbox environment before deploying to production.

Sample from the actual file you'll download.

// how to install Under 2 minutes

Four steps. Any AI chat.

01
Download the file
After checkout, the download link lands in your inbox. Save the file anywhere on your device.
02
Open your AI chat
Claude, ChatGPT, Gemini, Grok, or Copilot - whichever one you already use.
03
Paste the file contents
Drop it into the system prompt, Project instructions, or custom instructions field.
04
Start working
Your AI is now configured as a specialist. Ask it anything inside its domain.

No technical knowledge required. No subscription. Pay once, keep forever.

// compatible with

Works with every major AI chat.

Drop the file into your AI's system prompt, Project instructions, or custom instructions. No setup. No code. No vendor lock-in.

What buyers say across KissMySkills

This skill has no reviews of its own yet. These are real reviews of other KissMySkills skills, built the same way.

★★★★★
operations lead at a growing startup. we needed consistency across the team. this gave us a shared baseline to work from.

Lukas B. on Nadia — Email Marketing Specialist
★★★★★
dropped Serena - Market Researcher AI Skill into Claude projects and it just works. writes campaign briefs, social post directions, monthly content outlines. the output doesnt need much editing which is the main thing.

Sarah K. on Serena — Market Researcher
★★★★★
cfo at a professional services firm. the output structure matched what our board expects.

Jan Z. on Nadia — Email Marketing Specialist
★★★★★
product designer. needed a structured communication layer for cross-functional work. this provides it.

Ewa A. on Serena — Market Researcher
★★★★★
investment analyst. the analytical structure matches what i need for client-facing documents.

Joanna Y. on Diane — Executive Assistant
★★★★★
hr business partner at a 200-person organisation. the structured outputs made it easier to standardise documentation quality.

Rachel M. on Nadia — Email Marketing Specialist

// faq

Questions about this product

What does the Tomas skill do?+

Write and review clean, extension-only X++: Chain of Command, event handlers, data entities, batch jobs and performance fixes. Load it once into Claude Projects and you get a configured Dynamics 365 F&O Developer (X++) without re-explaining context at the start of every session. Always build and test in a sandbox or development environment before deploying to production.

How do I install this skill file?+

Download the .skill package (it contains SKILL.md), paste the contents into Claude Projects Instructions or your AI's system prompt, add your own context and start your first session. Works with Claude, ChatGPT, or any AI chat that accepts system prompts.

Which AI tools does this skill work with?+

Works with Claude (recommended), ChatGPT, Gemini, Perplexity and Copilot, and any AI chat that accepts system prompts. Claude Projects gives the best results.

What is included in this download?+

One .skill package delivered instantly after purchase: the full SKILL.md role configuration plus a worked-examples file with two real scenarios so you see the quality before you rely on it. No subscription, yours permanently.

How is this different from using Claude without the Tomas skill?+

Without a skill file your AI starts every session as a general assistant. With Tomas loaded it applies Dynamics 365 F&O Developer (X++) methodology from the first message, with consistent quality every time. Always build and test in a sandbox before production.

Do I have to read it myself?+

No. The file is written for your AI to read, not for you. Upload it or paste it in once and the AI takes on the role. After that you just ask it questions the way you normally would. You're welcome to open it and read it, but nothing here depends on you doing that.

Is this a physical book?+

No, it's digital. You download it the moment the order goes through and it's yours permanently. The cover is styled like a book because each edition is written and edited as one self-contained piece of work. The reading part is your AI's job, not yours.