Joeven — Learn Autonomous AI Agents

← LessonModel Context Protocol (MCP)Joeven

Python loads on first run

import json

FILES = {"README.md": "Joeven MCP classroom server"}
TICKETS = {"9182": {"title": "Runner OOM", "state": "open"}}

SERVERS = {
    "files": {
        "read_file": lambda path: {"text": FILES.get(path, ""), "missing": path not in FILES},
    },
    "tickets": {
        "get_ticket": lambda ticket_id: TICKETS.get(ticket_id, {"error": "not_found"}),
    },
}

def rpc(method, params=None):
    params = params or {}
    if method == "tools/list":
        listing = []
        for server, tools in SERVERS.items():
            for name in tools:
                listing.append({"server": server, "name": name})
        return {"result": listing}
    if method == "tools/call":
        server = params.get("server")
        name = params.get("name")
        tools = SERVERS.get(server) or {}
        if name not in tools:
            return {"error": {"code": -32601, "message": "Unknown tool"}}
        args = params.get("arguments") or {}
        return {"result": tools[name](**args)}
    return {"error": {"code": -32601, "message": "Unknown method"}}

print("list:", json.dumps(rpc("tools/list")))
print("call:", rpc("tools/call", {"server": "tickets", "name": "get_ticket", "arguments": {"ticket_id": "9182"}}))
print("nope:", rpc("tools/call", {"server": "tickets", "name": "delete_prod", "arguments": {}}))
print("bad method:", rpc("tools/explode", {}))

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