DeltaBot Utility Suite

DeltaBot Utility Suite is a hosted MCP service with 25 deterministic utility tools. Each tool is paid per call through Base-USDC x402; the buyer's MCP client needs its own x402-capable wallet to approve a paid call.

This repository contains a credential-free local stdio bridge. It connects supported MCP clients to a DeltaBot server you choose; it does not contain a seller wallet, buyer key, Railway credential, or local copy of the paid tools. It is not published on npm; npx installs it straight from this repository.

Getting started

You need an MCP client and, for paid calls, an x402-capable wallet holding Base USDC; listing the tools needs no wallet. Clients with Streamable HTTP support need nothing else (see below). Stdio-only clients need Node.js 18 or later and the npx command shown in Connect from a stdio-only client.

To run the bridge from a clone instead:

git clone https://github.com/gkaragioul/deltabot-utility-suite.git
cd deltabot-utility-suite
npm ci
npm test

Then configure the client to run node with the absolute path of bin/deltabot-utility-suite.mjs as its only argument, and set DELTABOT_SERVICE_URL (see below). Once connected, the client lists the 25 tools; calling one returns an x402 payment request that your wallet must approve before the tool runs.

Related MCP server: @melis-ai/x402-tools-mcp

Choose a server: DELTABOT_SERVICE_URL

There is no default server. The bridge reads the MCP endpoint from the DELTABOT_SERVICE_URL environment variable and, when it is not set, exits with:

the hosted DeltaBot service is offline; set DELTABOT_SERVICE_URL to a server you trust

Only use a server you trust: it decides which tools exist and what each paid call asks your wallet to approve. Clients with Streamable HTTP support can connect to that server's MCP endpoint directly instead of using the bridge.

Connect from a stdio-only client

Configure the client to run this command:

{
  "command": "npx",
  "args": ["-y", "github:gkaragioul/deltabot-utility-suite"],
  "env": { "DELTABOT_SERVICE_URL": "https://your-trusted-server.example/mcp" }
}

The command downloads the bridge from this repository and starts it as a local stdio bridge to the server in DELTABOT_SERVICE_URL. Tool discovery is free; a paid tool call receives its Base-USDC x402 payment request from that server and can only proceed after the buyer pays with their own compatible wallet.

Registry metadata

server.json is prepared for the official MCP Registry. It names the npm package @gkaragioul/deltabot-utility-suite, which has not been published, and declares DELTABOT_SERVICE_URL as a required variable. It lists no hosted remote, because the original service is offline. The project is not listed in the Registry.

Verification

While the service was online, the bridge was verified against the live hosted endpoint with MCP initialize and tools/list; no on-chain payment was made. On 26 September 2026 the npx install from GitHub worked, but the hosted endpoint returned 404 "Application not found".

Disclaimer

This bridge is provided as is, without warranty of any kind, under the MIT License, and the hosted service comes with no guarantee of availability or correct results. Use both at your own risk. Paid calls spend real Base USDC from your own wallet and on-chain payments generally cannot be reversed, so review each payment request before approving it. You are responsible for how you use the tools and their output.