GoldBean MCP Server

io.github.wuzenghai616-langPublished by GitHub account wuzenghai616-langv1.2.0Updated Oct 25, 2026

51 Baidu AI MCP tools: OCR, Vision, LLM, Speech, NLP. Pay-per-call from $0.001.

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Overview

AI-generated overview

A micropaid crypto-data MCP server that charges USDC on Base per request for BTC price, gas forecasts, market sentiment and DeFi metrics.

What you can do
Query free crypto data such as ETH price, gas estimates and service health without payment. Pay per call in USDC to retrieve BTC price, gas forecasts, market sentiment and Fear & Greed Index, DeFi TVL and chain data, blockchain network health, MEV and on-chain tracker reports, and Solana token risk assessments. The README also advertises Baidu AI tools (OCR, vision, LLM, speech, NLP), but the listed endpoints do not include them.
When to use it
Useful when an assistant needs quick crypto market, gas or DeFi reference data and the user is willing to pay small per-call USDC fees instead of signing up for API keys.
Requirements
A local npm package (goldbean-mcp) run over stdio, or the remote MCP endpoint described in the README. Paid calls need USDC on Base and an x402-capable wallet or client; the README mentions Base Sepolia testnet and Base mainnet. Network access to the service and its data sources is required.
Before you install
Paid endpoints cost USDC per call and require a wallet that signs x402 payments, so real funds can be spent; the README also lists a seller wallet address. The service is hosted at a bare IP address, and the README describes a migration from testnet to mainnet. Requests are sent to a third-party server and its data sources.

Installation

In SourceWeft

  1. Open GoldBean MCP Server in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

🫘 GoldBean - x402 Micropaid API Marketplace

[Official MCP Registry] [npm]

Pay per request with USDC on Base. No signup, no API key, no monthly subscription. Every call costs $0.02 USDC via the x402 protocol.

GoldBean is live: http://104.225.233.23:9879

Quick Start

1. Prerequisites

  • USDC on Base (eip155:84532 testnet or eip155:8453 mainnet)
  • A wallet that can sign x402 payments (AgentCash, CDP Wallet, or any EVM wallet)

2. Try a Free Endpoint

bash
curl http://104.225.233.23:9879/health# {"status":"ok","service":"GoldBean","timestamp":"2026-05-15T12:00:00.000Z"}
curl http://104.225.233.23:9879/eth-price# {"usd":"2255.93","change24h":"+0.31%","timestamp":"2026-05-15T12:00:00.000Z"}

3. Call a Paid Endpoint

bash
curl http://104.225.233.23:9879/paid/btc-price# HTTP 402 Payment Required# x402-challenge: {...}

To pay the 402 and get data, you need an x402-capable client:

Using AgentCash:

bash
npx agentcash@latest fetch http://104.225.233.23:9879/paid/btc-price

Using x402-proxy (CLI tool):

bash
npx x402-proxy http://104.225.233.23:9879/paid/btc-price

Using curl with manual payment (advanced):

bash
# Step 1: Request triggers 402curl -s -D - http://104.225.233.23:9879/paid/btc-price
# Step 2: Parse x402-challenge header, sign with your wallet# Step 3: Retry with x402-payment headercurl -H "x402-payment: <signed-payment>" http://104.225.233.23:9879/paid/btc-price

4. MCP Integration

Add to Claude Desktop / Cursor / Cline mcpServers config:

json
{  "mcpServers": {    "goldbean": {      "url": "http://104.225.233.23:9879/mcp"    }  }}

Available Endpoints

Free (no payment needed)

EndpointDescription
GET /Service info & endpoint list
GET /healthHealth check
GET /eth-priceReal-time ETH price (via CoinGecko)
GET /gasETH gas price estimate
GET /cardService card / metadata
GET /mcpMCP protocol manifest

Paid ($0.02 USDC per call)

EndpointDescription
GET /paid/btc-priceReal-time BTC price (via CoinGecko)
GET /paid/gas-forecastGas price forecast
GET /paid/market-intelMarket sentiment & Fear & Greed Index
GET /paid/defi-insightsDeFi TVL & chain data
GET /paid/network-healthBlockchain network health
GET /paid/tracker-reportMEV & on-chain tracker report
GET /paid/sol-token-riskSolana token risk assessment

How x402 Payment Works

Client                          GoldBean Server  │                                   │  ├─ GET /paid/btc-price ─────────────┤  │◄─ 402 Payment Required ───────────┤  │   x402-challenge: {...}           │  │                                   │  ├─ Sign challenge with wallet ──────┤  │   (off-chain, no gas fee)         │  │                                   │  ├─ GET /paid/btc-price ─────────────┤  │   x402-payment: <signed>          │  │◄─ 200 OK ─────────────────────────┤  │   {"usd":"68000.00",...}          │  │                                   │

The facilitator (x402.org) handles settlement. Your wallet sends USDC only when challenge is accepted. No recurring charges.

Data Sources

  • CoinGecko API — Real-time cryptocurrency prices
  • Etherscan API — Gas price oracle
  • Alternative.me — Fear & Greed Index

Seller Info

  • Seller wallet: 0xB5f5CBe48E0595C044Bc626f278F757463eAc2Ce (Base)
  • Network: eip155:84532 (Base Sepolia testnet) → migrating to eip155:8453 (Base mainnet)
  • Facilitator: https://x402.org/facilitator
  • Price: $0.02 USDC per paid call

Architecture

┌─────────────┐     x402 protocol      ┌──────────────┐│   Client    │ ◄─────────────────────► │   VPS (USCA) ││ (curl/Agent)│     HTTP + 402 flow     │  GoldBean 🫘 │└─────────────┘                         │  :9879       │       │                                └──────┬───────┘       │         ┌──────────────┐              │       └────────►│    Email     │◄─────────────┘                 │  (Gmail)     │  Monitor alerts                 │   Monitor    │                 └──────────────┘

Development

bash
# Servercd /opt/goldbeannpm install express axios @x402/express @x402/core @x402/evmnode server.js
# Monitorpython3 /opt/goldbean/chain_monitor.py

Ecosystem

Built on Bandwagon VPS (USCA-2). Part of the x402 ecosystem.

Source: README.md at commit 7bcbd3e

Tools

0
SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

1
  1. v1.2.0LatestSep 16, 2026

Score

50% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 days25 pts

    Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.

  • Auth declared10 pts

    Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.

  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts