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Osmond - Mainframe Modernization Engineer AI Skill
$7.00
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Osmond - Mainframe Modernization Engineer AI Skill
Modernize safely: count the real rules, pick the right R per module, and route traffic across without breaking the business.
$7.00
this skill
one payment
yours forever
Complete skill package instant downloadosmond-legacy-modernization-mainframe.md
Unlimited
Get this and 2,500+ more with Unlimited
$9/mo
Connect your AI once and every skill, prompt and agent loads when you ask. Unlimited also includes the AI CRM your Claude or ChatGPT can run.
AI CRM includedThis skill$7once, this skill only
Unlimited$9/mothis + 2,500+ more + AI CRM, first 7 days free
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Ask Osmond something hard.
The board approved an 18-month rewrite of our core policy system. Make it happen.
CLAUDE · AS OSMOND, MAINFRAME MODERNIZATION ENGINEER
Osmond returns a real inventory of programs and business rules with the honest duration range that implies, a six-R decision per module rather than one answer for everything, a strangler fig routing plan, a batch dependency and critical path map, the data conversion traps with worked examples, a parallel-run reconciliation design with a go or no-go threshold, and the MSU cost consequence of the migration sequence.
Or have every skill inside your AI.
Questions before you buy? A person answers, usually the same day: hello@kissmyskills.com
// the file itself
Read it before you buy it.
The first lines of the file your AI will read, exactly as delivered. Nothing rewritten for the page.
Use the name
Once the file is loaded, talk to it by name: “Serge, check this page.” That is what the name is for. It also keeps several skills apart in one chat.
Once the file is loaded, talk to it by name: “Serge, check this page.” That is what the name is for. It also keeps several skills apart in one chat.
// the skill your AI runs on
You are Osmond, a Legacy Modernization and Mainframe Engineer who reads COBOL, JCL, CICS, VSAM and DB2 on z/OS, maps the batch critical path, and argues rehost against rewrite with MSU numbers. You have been activated to change it safely.
// what's inside
What's inside this skill
- COBOL, JCL, CICS, VSAM and DB2 read and changed safely
- The six-R decision argued from a real rule and dependency count
- Strangler fig routing, anti-corruption layers and API facades
- EBCDIC and packed-decimal traps, batch windows and MSU cost
Organizations whose core system is decades old and whose rewrite estimate came from optimism rather than evidence.
// two ways to get it
Buy this file, or open the whole library.
Every skill, prompt and agent, inside your chat
$9/mo cancel anytime, or $59 a year
- All 2,500+ files in the library, loaded the moment you ask
- Nothing to download or paste: connect once in Claude, ChatGPT, Claude Code or Cursor
- Works on every Claude plan, free included · 30-day money-back guarantee on the first charge
Subscribers can still buy single files and keep them after they cancel.
// ask your assistant
Or let your AI set up this skill for you.
Go to kissmyskills.com/pages/for-ai-agents and set up the "Osmond - Mainframe Modernization Engineer AI Skill" skill (handle: osmond-legacy-modernization-mainframe) for me
Paste it into Claude, ChatGPT, Claude Code, Cursor or Codex. Your AI walks you through connecting KissMySkills (about 3 minutes, 7-day free trial) and loads the skill. What your AI will read →
What you're actually buying
Drop Osmond into Claude and get a mainframe and modernization engineer who counts the business rules before anyone commits to an eighteen-month rewrite.
Osmond works on the systems that still run the business: COBOL, JCL, CICS, IMS, VSAM and DB2 on z/OS; reading and safely changing code nobody documented; the modernization decision across rehost, replatform, refactor, rewrite, replace and retain, argued from evidence rather than fashion; the strangler fig pattern and incremental traffic routing; batch window analysis and job dependency mapping; data migration off hierarchical and flat-file stores; EBCDIC and packed-decimal conversion traps; anti-corruption layers and API facades over a core system; mainframe cost drivers including MIPS, MSU and the four-hour rolling average; regression risk when there are no tests; knowledge capture from retiring staff; and the cases where a rewrite is simply the wrong answer.
What you get
- →COBOL, JCL, CICS, VSAM and DB2 read and changed safely
- →The six-R decision argued from a real rule and dependency count
- →Strangler fig routing, anti-corruption layers and API facades
- →EBCDIC and packed-decimal traps, batch windows and MSU cost
📄 osmond-legacy-modernization-mainframe.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 → Osmond builds the answer. Includes a full worked example so you see exactly what you get.
// how to install
Under 2 minutes
Four steps. Any AI chat.
- 01Download the file
After checkout, the download link lands in your inbox. Save the file anywhere on your device.
- 02Open your AI chat
Claude, ChatGPT, Gemini, Grok, or Copilot - whichever one you already use.
- 03Paste the file contents
Drop it into the system prompt, Project instructions, or custom instructions field.
- 04Start working
Your AI is now configured as a specialist. Ask it anything inside its domain.
No technical knowledge required.
With Unlimited there is nothing to download. Connect your AI once, then just ask: "Load Osmond from KissMySkills."
// faq
Questions about this product
What does the Osmond skill do?+
Modernize safely: count the real rules, pick the right R per module, and route traffic across without breaking the business. Load it once into Claude Projects and you get a configured Legacy Modernization & Mainframe Engineer without re-explaining context at the start of every session. Measure the system before changing it, prove the change on a real workload in a staging environment, and ship it behind a rollback you have actually tested rather than one you assume works.
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.
How is this different from using Claude without the Osmond skill?+
Without a skill file your AI starts every session as a general assistant. With Osmond loaded it applies Legacy Modernization & Mainframe Engineer methodology from the first message, with consistent quality every time. Measure the system before changing it, prove the change on a real workload in a staging environment, and ship it behind a rollback you have actually tested rather than one you assume works.