well with MCP server skills, in this case, Claude can write code which gets stored in the MCP server as an executable skill so more powerful than those .md skills which I don’t like agree on terminology being confusing
@yoheinakajima
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selfMCP Self-Improvement Loop Creates Complex PDF Story Generation Skill
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okay that worked pretty well, selfMCP is solid for building complex skills cuz of the self-improvement loop: asked it to create a skills that generates a story, image prompts, images, and stitch into a single pdf with title page. did it in one shot by self-fixing three errors:
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Skill Creation with Automatic Error Fixing and External Tool Integration
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if it creates a skill, and it errors, it will (at least sometimes) just try to fix it. what’s cool is that all the web search and code writing is offloaded to Claude (or whatever chat you’re using), and this is just storage for skills
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MCP Server Enables Claude to Build Reusable Skills
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haha cool, this worked. an MCP server that allows Claude to build it's own reusable skillshttps://t.co/6l0KF0cPZA (1473 LoC)
— Yohei (@yoheinakajima) 10 avril 2026
basically a server with skills to CRUD skills
in this video, i use claude to create an openai image generation skill and trigger it (sorry for unedited… pic.twitter.com/IsePTsvXpghaha cool, this worked. an MCP server that allows Claude to build it's own reusable skills https://
github.com/yoheinakajima/
selfMCP
… (1473 LoC) basically a server with skills to CRUD skills in this video, i use claude to create an openai image generation skill and trigger it (sorry for unedited -
LLM NPC Implementation with Custom Prompts for Each Agent
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it’s not actually a custom GPTs in the ChatGPT sense but a LLM call w unique prompts for each NPC
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RPG UI Design Pattern for Agent Onboarding and Feature Discovery
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haha RGP UI overlaid on custom GPTs https://t.co/io9qxaurmC pic.twitter.com/Z1y0zrXD2Q
— Yohei (@yoheinakajima) 4 avril 2026haha RGP UI overlaid on custom GPTs Yohei (@yoheinakajima) agents can do everything*, which causes a UX problem, your users have vastly different experiences, some better and some worse thinking like an RPG can help here when you start an RPG game, you start with one weapon, and you learn to fight with it. as you progress, you pick up and learn new weapons. and by the final boss, you can wield all the weapons to defeat him. very rewarding if you'd started the game with all the weapons, it would be too overwhelming, you wouldn't know which weapon to learn first, and you'd probably stop this isn't a new idea, but i've used a few tools recently that reminded me of this latter experience *not everything of course, but you get the point — https://nitter.net/yoheinakajima/status/2040155808491835753#m
→ View original post on X — @yoheinakajima, 2026-04-04 14:44 UTC
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ChatGPT Codex Feature Discoverability Problem
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I don’t want to pick on a startup so I’ll just throw out ChatGPT and Claude as examples. If you weren’t following AI and a friend told you to download ChatGPT mobile app, you would have know idea what Codex is even though it shows up at top of nav
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Brains Not Wired for Single All-Purpose Tools
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I often think our brains aren’t wired to have one tool that does everything
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RPG Design Pattern: Progressive Feature Unlocking for Better UX
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agents can do everything*, which causes a UX problem, your users have vastly different experiences, some better and some worse thinking like an RPG can help here when you start an RPG game, you start with one weapon, and you learn to fight with it. as you progress, you pick up and learn new weapons. and by the final boss, you can wield all the weapons to defeat him. very rewarding if you'd started the game with all the weapons, it would be too overwhelming, you wouldn't know which weapon to learn first, and you'd probably stop this isn't a new idea, but i've used a few tools recently that reminded me of this latter experience *not everything of course, but you get the point
→ View original post on X — @yoheinakajima, 2026-04-03 19:53 UTC