mcp-builder

Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK).

mcptools mixed

install · efd09da

# CLI (primary)

$ autovault add jack-arturo/skillissue@efd09da503770bce1de134fc485f62e65f1d38c3:skills/mcp-builder/SKILL.md --sync-profiles

# MCP tool call

add_skill({ source: "github", identifier: "jack-arturo/skillissue@efd09da503770bce1de134fc485f62e65f1d38c3:skills/mcp-builder/SKILL.md" })

→ vault validates · signs · syncs agent skill dirs

source: jack-arturo/skillissue

Why it exists

We kept shipping 1:1 API wrappers that rotted in agent context. This skill encodes the resist-bloat rules Jack runs house-wide.

History

Origin

Mixed lineage with Anthropic-style guidance; house amendments on tool count ceilings and description craft.

How Jack actually uses it

Before adding any MCP tool — extend parameters first, compose client-side second, new tool last.

What it is not

Not a generic tutorial. It's the house runbook for this machine and these agents.

mcp-registry-maintainer

Package

Version 1.0.0 · install pin efd09da · SSOT skills/mcp-builder/ on GitHub