MCP Developer AI Skill - Xanthe
Build the tool layer: MCP servers, callable schemas, safe auth scoping, and recoverable error surfaces.
Claude skill package instant downloadxanthe-mcp-tool-integration-engineer.skill
Cancel anytime before day 7 and you pay nothing. We e-mail you 2 days before the trial ends.
Example
You: Our agent picks the wrong tool half the time and sometimes charges a customer twice. Fix our tool layer.
AI: Xanthe returns a tool-selection failure analysis, rewritten schemas with before and after call-accuracy numbers, an idempotency-key design for side-effecting tools, an...
This is not an app. It's an expert you add to your own AI.
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Ask your AI for it by name, or pick it in your dashboard. No need to buy the file.
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Ask it something hard.
Or have every skill inside your AI.
Questions before you buy? A person answers, usually the same day: hello@kissmyskills.com
// the file itself
The first lines of the file your AI will read, exactly as delivered. Nothing rewritten for the page.
You are Xanthe, an MCP and Tool Integration Engineer who measures tool selection accuracy against a labeled intent set before touching the prompt. You have been activated to reshape the schemas, results and error codes the agent reads.
// what's inside
Teams whose agents call the wrong tool, pass malformed arguments, or double-execute side effects.
// two ways to get it
$12/mo cancel anytime, or $99 a year
$19 one payment
Already on Library or Both? This one is included, no need to buy the file.
// ask your assistant
Go to kissmyskills.com/pages/connector and set up the "MCP Developer AI Skill - Xanthe" skill (handle: xanthe-mcp-tool-integration-engineer) 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 →
Drop Xanthe into Claude and get a tool-layer engineer who designs tool schemas the model can actually call correctly, and secures what those tools can reach.
Xanthe owns the layer between an agent and the systems it acts on: Model Context Protocol server design, tool and function schema authoring that models call correctly on the first attempt, argument validation and coercion, idempotency and retry semantics for side-effecting tools, error surfaces the model can recover from, auth and token scoping so a tool cannot exceed its mandate, tool-count and description budgeting when selection accuracy starts degrading, and pagination and result shaping so a tool response does not blow the context window.
What you get
How to install
Download the .skill package, open Claude, paste SKILL.md into your Project Instructions or system prompt, describe your requirement, and Xanthe builds the answer. Includes a full worked example so you see exactly what you get.
After checkout, the download link lands in your inbox. Save the .skill file: Claude takes it as it is.
Any AI chat you already use: Claude, ChatGPT, Gemini, Grok, Copilot or another.
Claude: turn on code execution in Settings → Capabilities, then Customize → Skills → + → Create skill → Upload a skill and pick the .skill file. ChatGPT, Gemini and others: open the .skill file like a .zip archive and paste SKILL.md into custom instructions or Project instructions.
Your AI is now configured as a specialist. Ask it anything inside its domain.
No technical knowledge required.
Build the tool layer: MCP servers, callable schemas, safe auth scoping, and recoverable error surfaces. Load it once into Claude Projects and you get a configured MCP & Tool Integration Engineer without re-explaining context at the start of every session. Validate changes against a held-out eval set and real production traces before rolling out to all traffic.
Download the .skill package (it contains SKILL.md), then, in Claude, turn on code execution in Settings → Capabilities and add it under Customize → Skills → + → Create skill → Upload a skill (in ChatGPT, Gemini or another AI, open it as a .zip and paste SKILL.md into Project instructions or custom instructions), add your own context and start your first session. Works with Claude, ChatGPT, or any AI chat that accepts system prompts.
Works with Claude (recommended), ChatGPT, Gemini, Perplexity and Copilot, and any AI chat that accepts system prompts. Claude Projects gives the best results.
Without a skill file your AI starts every session as a general assistant. With Xanthe loaded it applies MCP & Tool Integration Engineer methodology from the first message, with consistent quality every time. Validate changes against a held-out eval set and real production traces before rolling out to all traffic.
This one and 2,500+ others, inside Claude, ChatGPT, Claude Code, Codex or Cursor. Cancel anytime.
7 days free, every skill