Mcpolyglot

Name: Mcpolyglot
Author: ishay60

by ishay60version 0.4.3i★ –iRuns on your computer

Registry nameio.github.ishay60/mcpolyglot

Install

Overview

Description from the maker (original English)

Policy-checked, audited agent access to Postgres, MySQL, SQLite, MongoDB and OpenAPI REST APIs.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Databases & datasets

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
The registry lists no key to fill in.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "mcpolyglot": {
      "command": "npx",
      "args": [
        "-y",
        "@mcpolyglot/cli",
        "serve",
        "--config",
        "your-value"
      ]
    }
  }
}

Run this in your terminal

claude mcp add mcpolyglot -- npx -y @mcpolyglot/cli serve --config your-value

This one needs values on its command line, so copy the settings and fill them in.

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "mcpolyglot": {
      "command": "npx",
      "args": [
        "-y",
        "@mcpolyglot/cli",
        "serve",
        "--config",
        "your-value"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one needs values on its command line, so copy the settings and fill them in.

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "mcpolyglot": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@mcpolyglot/cli",
        "serve",
        "--config",
        "your-value"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account ishay60, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Databases & datasetsi

More stars than 0% of the other 1137 servers in this category
Published to the registry more recently than 61% of the other 1137 servers in this category
Basic checks equal to or better than 100% of the other 1137 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Mcpolyglot safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.4.3) reached the registry 34 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Supabase, MongoDB MCP Server, Elasticsearch MCP Server

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Supabase

by supabase

Supabase’s official server lets AI create tables, query data and review project settings in your Supabase database.

Computer or cloud★ 2,993Apache-2.0Updated yesterday

Install

MongoDB MCP Server

by mongodb-js

MongoDB Model Context Protocol Server

Runs on your computer★ 1,157Apache-2.0Updated 3 days ago

Install

Elasticsearch MCP Server

by cr7258

MCP server for interacting with Elasticsearch

Runs on your computer★ 315Apache-2.0Updated 14 months ago

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

@mcpolyglot/cli

The mcpolyglot command-line interface. Scaffolds a config, validates connectivity, lists tools, and serves the MCP server over stdio or Streamable HTTP.

npx @mcpolyglot/cli init       # interactive wizard

npx @mcpolyglot/cli doctor # validate config, ping sources, list tools npx @mcpolyglot/cli tools # list tools mcpolyglot would expose npx @mcpolyglot/cli serve # start the MCP server (stdio) npx @mcpolyglot/cli serve --http --port 7337 # start over Streamable HTTP

Commands

Command	Purpose
`init`	Interactively scaffold an `mcpolyglot.config.ts` in the current directory.
`doctor`	Load + validate config, resolve secrets, ping each source, list tools.
`tools`	Print every tool mcpolyglot would expose for the current config.
`serve`	Start the server. `--http` flips to Streamable HTTP with bearer auth.
`token`	`token create` mints a per-agent token; `token hash` hashes one.

serve --http prints the bearer token, MCP URL, and /healthz URL on stderr. Pin the token in your config (transport.auth.token) for stable deployments; omit it to mint a fresh token on each start.

Multiple agents over HTTP

Give each agent its own token, sources and scopes. Tokens are stored only as sha256 hashes:

mcpolyglot token create analyst       # prints the token once, its hash, and a config snippet

echo -n "$TOKEN" | mcpolyglot token hash

agents: [

{ id: 'analyst', tokens: [{ hash: ' ', label: '2026-09' }], scopes: ['schema:read', 'tables:read', 'query:raw'], sources: { 'pg.main': { policy: { tables: { users: 'none' } } } }, }, ],

An agent sees only tools of the sources listed under it, and only tools its scopes fully cover. scopes defaults to, and is capped at, the union of those sources' scopes.
A per-agent policy can only narrow the source's policy: per table the most restrictive access wins, deny lists are combined, and caps take the smaller value. An agent can't re-open a table the source hides or gain writes the source doesn't grant. The reverse also holds: a table the agent's policy doesn't list falls to its defaultAccess (at most read), so an agent that should keep a source's write access must list that table as write again. It gets its own connector, so its own DB connection; sources listed without a policy share the main one.
The token decides the audit agentId; the x-mcpolyglot-agent header is ignored when agents is set. Unknown or revoked tokens get 401.
Rotate: add the new hash, move the client over, set revoked: true on the old one (or delete it), restart serve. There is no hot reload.
agents needs bearer auth (not OAuth) and is ignored under stdio (single local user). doctor lists what each agent can and can't use.

Stdio servers must keep stdout clean, so all CLI output goes to stderr.

Docs

Full README → https://github.com/ishay60/mcpolyglot
Architecture → https://github.com/ishay60/mcpolyglot/blob/develop/ARCHITECTURE.md
Examples → https://github.com/ishay60/mcpolyglot/tree/develop/examples

MIT licensed.

Mcpolyglot

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Databases & datasetsi

Common questions

Alternatives

Supabase

MongoDB MCP Server

Elasticsearch MCP Server

README from the maker

@mcpolyglot/cli

Commands

Multiple agents over HTTP

Docs