mcp

A stateless Model Context Protocol server over Streamable HTTP for IFCastle applications: tools only, every answer application/json, no sessions.

It serves the current revision, 2026-07-28 (per-request _meta, server/discover, mirrored headers), and the older era of 2025-11-25 and 2025-06-18 (initialize without a session id) at the same endpoint, choosing the era per request by its body. The host application supplies:

• a BearerAuthenticatorInterface, which turns Authorization: Bearer <token> into the principal tools run as;
• a ToolRegistry of Tool definitions, each with a JSON Schema (the subset SchemaValidator checks) and a handler;
• the Origin values a browser may send.

$server = new McpServer(new ServerInfo('my-app', '1.0'), $tools, $authenticator, ['https://my-app.example']);
$response = $server->handle($httpRequest);   // status, headers, body to send as they are