#!/usr/bin/env node
/**
* Skill Jack MCP - "I know kung fu."
*
* MCP server that jacks Agent Skills directly into your LLM's brain.
*
* Usage:
* skill-jack-mcp /path/to/skills
* SKILLS_DIR=/path/to/skills skill-jack-mcp
*/
import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import * as path from "node:path";
import {
discoverSkills,
generateInstructions,
createSkillMap,
} from "./skill-discovery.js";
import { registerSkillTool } from "./skill-tool.js";
/**
* Get the skills directory from command line args or environment.
*/
function getSkillsDir(): string | null {
// Check command line argument first
const args = process.argv.slice(2);
if (args.length > 0 && args[0] && !args[0].startsWith("-")) {
return path.resolve(args[0]);
}
// Fall back to environment variable
const envDir = process.env.SKILLS_DIR;
if (envDir) {
return path.resolve(envDir);
}
return null;
}
async function main() {
const skillsDir = getSkillsDir();
if (!skillsDir) {
console.error("Usage: skill-jack-mcp <skills-directory>");
console.error(" or: SKILLS_DIR=/path/to/skills skill-jack-mcp");
process.exit(1);
}
console.error(`Discovering skills from: ${skillsDir}`);
// Discover skills and generate instructions
const skills = discoverSkills(skillsDir);
console.error(`Found ${skills.length} skill(s): ${skills.map((s) => s.name).join(", ") || "none"}`);
const instructions = generateInstructions(skills);
const skillMap = createSkillMap(skills);
// Create the MCP server
const server = new McpServer(
{
name: "skill-jack-mcp",
version: "1.0.0",
},
{
capabilities: {
tools: {},
},
instructions,
}
);
// Register the skill tool
registerSkillTool(server, skillMap);
// Connect via stdio transport
const transport = new StdioServerTransport();
await server.connect(transport);
console.error("Skill Jack ready. I know kung fu.");
}
main().catch((error) => {
console.error("Fatal error:", error);
process.exit(1);
});
