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appler1009

Meta MCP Search

by appler1009
OverviewSchemaRelated ServersScoreDiscussions
TypeScript
Hybrid

Meta MCP Search

A single MCP server exposing search_tool that routes to 1000+ local MCP tools via semantic search.

Features

  • Semantic Search: Uses gte-small embeddings (8-bit quantized, multi-threaded) via @xenova/transformers for fast, accurate tool discovery

  • Hybrid Search: Cosine similarity on query vs tool name + description

  • MCP Protocol: Full implementation of Model Context Protocol with stdio transport

  • Dual Usage: Can be used as an MCP server or imported directly as a TypeScript module

Installation

npm install meta-mcp-search

Usage

As MCP Server (stdio) - Quick Start

The easiest way to run the MCP server is with npx:

npx meta-mcp-search

Or if installed globally:

npm install -g meta-mcp-search
meta-mcp-search

The server will:

  1. Load tools from config.json or tools-manifest.json in the current directory

  2. Build embeddings for all tools

  3. Listen on stdio for MCP requests

As Imported Module

import { MetaMcpSearch, searchToolsDirect } from 'meta-mcp-search';

// Option 1: Create instance and use directly
const metaMcp = new MetaMcpSearch({
  configPath: './tools-manifest.json'
});
await metaMcp.init();

const tools = await metaMcp.search('send a message to slack');
console.log(tools);

// Option 2: Quick search function
const tools = await searchToolsDirect('list files in google drive', {
  configPath: './config.json'
});

Direct Function Calls

import { 
  SearchEngine, 
  loadToolsFromConfig,
  initSearchEngine,
  searchTools 
} from 'meta-mcp-search';

// Load tools
const tools = await loadToolsFromConfig('./tools-manifest.json');

// Initialize search engine
await initSearchEngine(tools);

// Search
const results = await searchTools('create a github issue', 5);

Configuration

config.json Format

{
  "mcpServers": {
    "google-drive": {
      "command": "node",
      "args": ["./servers/google-drive/dist/index.js"],
      "tools": [
        {
          "name": "google_drive_list",
          "description": "List files in Google Drive",
          "inputSchema": {
            "type": "object",
            "properties": {
              "folderId": { "type": "string" }
            },
            "required": ["folderId"]
          }
        }
      ]
    }
  }
}

tools-manifest.json Format

{
  "version": "1.0.0",
  "tools": [
    {
      "name": "google_drive_list",
      "description": "List files in Google Drive",
      "inputSchema": {
        "type": "object",
        "properties": {
          "folderId": { "type": "string" }
        },
        "required": ["folderId"]
      },
      "serverKey": "google-drive"
    }
  ]
}

API Reference

MetaMcpSearch

Main class for the meta MCP search functionality.

const metaMcp = new MetaMcpSearch(options?: MetaMcpSearchOptions);
await metaMcp.init();
await metaMcp.search(query: string, limit?: number);
await metaMcp.start(); // Start MCP server

SearchEngine

Low-level search engine class.

const engine = new SearchEngine();
await engine.init(tools);
const results = await engine.search(query, limit);

loadToolsFromConfig(path?: string)

Load tools from configuration file.

const tools = await loadToolsFromConfig('./config.json');

MCP Tool: search_tool

The server exposes a single tool:

Input Schema:

{
  "type": "object",
  "properties": {
    "query": {
      "type": "string",
      "description": "Natural language query describing what you want to accomplish"
    },
    "limit": {
      "type": "number",
      "default": 8,
      "description": "Maximum number of results to return"
    }
  },
  "required": ["query"]
}

Output:

[
  {
    "name": "slack_send_message",
    "description": "Send a message to a Slack channel",
    "inputSchema": { ... },
    "serverKey": "slack",
    "score": 0.89
  }
]

Development

# Build
npm run build

# Development (watch mode)
npm run dev

# Clean build artifacts
npm run clean

# Run tests
npm test

# Run tests with coverage
npm run test:coverage

Publishing to npm

This package is published to npm. To publish a new version:

# 1. Make sure you're logged in to npm
npm login

# 2. Update the version in package.json
npm version patch  # or minor, or major

# 3. Build and test
npm run build
npm test

# 4. Publish
npm publish

The prepublishOnly script will automatically run clean and build before publishing.

Requirements

  • Node.js >= 18.0.0

  • npm

License

MIT

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