#!/usr/bin/env node
/**
* Smart AI Bridge v2.0.0 - Modular MCP Server
*
* Thin entry point that wires together:
* - Tool definitions (tools/tool-definitions.js)
* - Handler factory (handlers/index.js)
* - Backend registry (backends/backend-registry.js)
* - Intelligence layer (intelligence/index.js)
* - StdioServerTransport (MCP SDK)
*/
import { Server } from '@modelcontextprotocol/sdk/server/index.js';
import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js';
import {
CallToolRequestSchema,
ErrorCode,
ListToolsRequestSchema,
McpError,
} from '@modelcontextprotocol/sdk/types.js';
import { CORE_TOOL_DEFINITIONS } from './tools/tool-definitions.js';
import { HandlerFactory } from './handlers/index.js';
import { BackendRegistry } from './backends/backend-registry.js';
import { sanitizeForJSON } from './json-sanitizer.js';
import { PlaybookSystem } from './intelligence/playbook-system.js';
import { MultiAIRouter } from './router.js';
const VERSION = '2.0.0';
console.error(`Smart AI Bridge v${VERSION} starting...`);
// ── Initialize backend registry ──────────────────────────────────
const backendRegistry = new BackendRegistry();
console.error(`Backends initialized: ${backendRegistry.getAvailableBackends?.() || 'registry ready'}`);
// ── Initialize router ────────────────────────────────────────────
const router = new MultiAIRouter(backendRegistry);
// ── Initialize intelligence layer ────────────────────────────────
const playbook = new PlaybookSystem();
// ── Build handler context ────────────────────────────────────────
const handlerContext = {
router,
server: {
backendRegistry,
VERSION,
},
playbook,
backendRegistry,
};
const handlerFactory = new HandlerFactory(handlerContext);
// ── Create MCP server ────────────────────────────────────────────
const server = new Server(
{
name: 'smart-ai-bridge',
version: VERSION,
description: 'Smart AI Bridge - Multi-AI orchestration MCP server with modular handler architecture'
},
{
capabilities: {
tools: {},
logging: {}
}
}
);
// ── ListTools handler ────────────────────────────────────────────
server.setRequestHandler(ListToolsRequestSchema, async () => {
const tools = CORE_TOOL_DEFINITIONS.map(def => ({
name: def.name,
description: def.description,
inputSchema: def.schema
}));
console.error(`[SAB] ListTools: ${tools.length} tools available`);
return { tools };
});
// ── Build tool-name → handler-name mapping ───────────────────────
const toolToHandler = new Map();
for (const def of CORE_TOOL_DEFINITIONS) {
toolToHandler.set(def.name, def.handler);
}
// ── CallTool handler ─────────────────────────────────────────────
server.setRequestHandler(CallToolRequestSchema, async (request) => {
const { name, arguments: args } = request.params;
const startTime = Date.now();
console.error(`[SAB] CallTool: ${name}`);
const handlerName = toolToHandler.get(name);
if (!handlerName) {
throw new McpError(
ErrorCode.MethodNotFound,
`Unknown tool: ${name}. Available: ${[...toolToHandler.keys()].join(', ')}`
);
}
try {
const result = await handlerFactory.execute(handlerName, args || {});
const elapsed = Date.now() - startTime;
console.error(`[SAB] ${name} completed in ${elapsed}ms`);
// Normalize result format
const content = typeof result === 'string'
? result
: typeof result === 'object' && result !== null
? (result.content || JSON.stringify(sanitizeForJSON(result), null, 2))
: String(result);
return {
content: [{
type: 'text',
text: content
}]
};
} catch (error) {
const elapsed = Date.now() - startTime;
console.error(`[SAB] ${name} failed after ${elapsed}ms: ${error.message}`);
if (error instanceof McpError) {
throw error;
}
return {
content: [{
type: 'text',
text: JSON.stringify({
error: error.message,
tool: name,
elapsed_ms: elapsed
})
}],
isError: true
};
}
});
// ── Connect transport ────────────────────────────────────────────
const transport = new StdioServerTransport();
await server.connect(transport);
console.error(`Smart AI Bridge v${VERSION} connected via stdio`);
console.error(`Tools: ${toolToHandler.size} | Backends: 6`);
