Galactic Bridge

Name: Galactic Bridge
Author: mckellen-eth

by mckellen-ethversion 0.1.1i★ –iRuns on your computer

Registry nameio.github.mckellen-eth/galactic-bridge-mcp

Install

Overview

Description from the maker (original English)

Find LayerZero OFT bridge routes by contract address across 14 EVM networks.

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: Other
You need to fill in: GB_PRIVATE_KEY

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).
You fill in yourself: GB_PRIVATE_KEY

Values marked secret are keys to your account. Never share them or paste them into a chat.

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": {
    "galactic-bridge": {
      "command": "npx",
      "args": [
        "-y",
        "galactic-bridge-mcp"
      ],
      "env": {
        "GB_PRIVATE_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add galactic-bridge --env GB_PRIVATE_KEY=your-value -- npx -y galactic-bridge-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "galactic-bridge": {
      "command": "npx",
      "args": [
        "-y",
        "galactic-bridge-mcp"
      ],
      "env": {
        "GB_PRIVATE_KEY": "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.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "galactic-bridge": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "galactic-bridge-mcp"
      ],
      "env": {
        "GB_PRIVATE_KEY": "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.

Values you fill in

GB_PRIVATE_KEY secret env
OPTIONAL. Set to enable the execute_bridge tool (signs and broadcasts). Leave unset for safe, read-only mode.

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 mckellen-eth, 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 Otheri

More stars than 0% of the other 32706 servers in this category
Published to the registry more recently than 55% of the other 32706 servers in this category
Basic checks equal to or better than 100% of the other 32706 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 Galactic Bridge 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?

You need to fill in: GB_PRIVATE_KEY

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 (0.1.1) 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: Spec Driven Development, Remote Desktop Commander, Kanal Varna — drains, leaks & plumbing (Varna, BG)

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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.

Galactic Bridge MCP

An MCP server that lets AI agents and MCP clients (Claude Desktop, Cursor, …) use Galactic Bridge to find LayerZero OFT bridge routes by token contract address and build ready-to-sign cross-chain transactions across 14 EVM networks — including tokens that aren't listed on aggregators like Stargate.

By default this server is read-only. It finds routes and builds transactions, but it never holds a key and never signs anything — a human or wallet does that. Auto-signing is an optional add-on you turn on yourself (see the bottom).

What it does

It talks only to the public Galactic Bridge API — the same endpoints the website calls. It does not run on the bridge's servers and changes nothing there.

Tools

Tool	What it does
`list_supported_networks`	The 14 networks, with chain key, chainId, LayerZero eid and native symbol.
`scan_token_networks`	Given a token address, every network it exists on and its OFT contract on each.
`find_bridge_route`	Resolves a route between two networks: OFT contract, whether the direction is enabled right now, the fee, and — with `amount` + `recipient` — a ready-to-sign transaction (plus an ERC-20 approval when the token bridges through a separate adapter).

find_bridge_route never signs or sends. It returns transaction objects ({ to, data, value, chainId }) for you to review and sign in your own wallet.

Install

Requires Node.js 18+.

Claude Desktop

Add to your claude_desktop_config.json:

"mcpServers": { "galactic-bridge": { "command": "npx", "args": ["-y", "galactic-bridge-mcp"] } } }

Cursor / other MCP clients

Point the client at the command npx -y galactic-bridge-mcp (stdio transport).

From source

git clone https://github.com/mckellen-eth/galactic-bridge-mcp.git

cd galactic-bridge-mcp npm install npm run build node dist/index.js

Example

"Bridge 50 of token 0x90e7…d9e1 from BNB Chain to Arc, to my address 0xABC…"

The agent calls find_bridge_route and gets back a ready transaction plus the fee. You review it and sign in your wallet. If the token uses a separate adapter, you'll also get an approval transaction to sign first.

Safety

No keys by default. The read-only tools never see a private key.
You sign. Transactions are returned for review; your wallet signs them.
Fees and decimals are read live, so amounts are exact. Directions that a token has disabled are reported instead of returning a transaction that would revert.

Always verify a transaction before signing. This software is provided as-is, with no warranty (MIT).

Optional: auto-signing (advanced)

You can let the server sign and broadcast transactions itself by setting a private key in your environment. This moves real funds irreversibly and is off by default. Only enable it if you understand the risk, and use a dedicated hot wallet that holds no more than you can afford to lose.

"mcpServers": { "galactic-bridge": { "command": "npx", "args": ["-y", "galactic-bridge-mcp"], "env": { "GB_PRIVATE_KEY": "0xyourHotWalletKey" } } } }

When GB_PRIVATE_KEY is set, an extra tool appears — execute_bridge — which builds, signs and broadcasts the bridge transaction (and the approval first, if needed). It needs the optional ethers package (npm install ethers) and, for networks without a built-in public RPC, an override like GB_RPC_BSC=….

Without GB_PRIVATE_KEY, none of this loads and the server stays read-only.

Configuration

Variable	Purpose
`GB_API_URL`	Override the bridge API base URL (default `https://galacticbridge.app`).
`GB_PRIVATE_KEY`	Opt in to auto-signing. Unset = read-only.
`GB_RPC_`	RPC URL used by auto-signing for that chain (e.g. `GB_RPC_ARC`).

Galactic Bridge

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

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 Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

Kanal Varna — drains, leaks & plumbing (Varna, BG)

README from the maker

Galactic Bridge MCP

What it does

Tools

Install

Claude Desktop

Cursor / other MCP clients

From source

Example

Safety

Optional: auto-signing (advanced)

Configuration