MCP 服务器

solanaprox-mcp

Description: Pay-per-request access to Claude and GPT models via Solana USDC using a Phantom wallet address. No accounts, no API keys — wallet-native authentication.

README

SolanaProx MCP Server

Pay for AI inference with Solana. No API keys. Your wallet is your identity.

Connect Claude Desktop, Cursor, or any MCP-compatible AI tool to SolanaProx — pay per request using USDC or SOL directly from your Phantom wallet.

What is SolanaProx?

SolanaProx is an AI API gateway where your Phantom wallet is your account. Deposit USDC or SOL, make AI requests, pay per use. No signups. No subscriptions. No API key management.

Your Phantom Wallet → SolanaProx → Claude / GPT-4
       ↑                                    ↓
   USDC balance                        AI response

Quick Start

1. Install the MCP server

npx solanaprox-mcp

2. Add to Claude Desktop

Edit ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "solanaprox": {
      "command": "npx",
      "args": ["solanaprox-mcp"],
      "env": {
        "SOLANA_WALLET": "YOUR_PHANTOM_WALLET_ADDRESS"
      }
    }
  }
}

3. Add to Cursor

Edit ~/.cursor/mcp.json:

{
  "mcpServers": {
    "solanaprox": {
      "command": "npx",
      "args": ["solanaprox-mcp"],
      "env": {
        "SOLANA_WALLET": "YOUR_PHANTOM_WALLET_ADDRESS"
      }
    }
  }
}

4. Deposit USDC

Visit solanaprox.com, connect your Phantom wallet, and deposit USDC or SOL.

That's it. Claude can now make AI requests that pay automatically from your balance.

Tools

`ask_ai`

Send a prompt to Claude or GPT-4. Cost deducted automatically from wallet balance.

Input:
  prompt      (required) — your question or task
  model       (optional) — claude-sonnet-4-20250514 (default) | gpt-4-turbo
  max_tokens  (optional) — 1-4096, default 1024
  system      (optional) — system prompt for context

`check_balance`

Check your current USDC/SOL balance on SolanaProx.

Input:
  wallet  (optional) — defaults to configured SOLANA_WALLET

`estimate_cost`

Estimate request cost before making it.

Input:
  prompt      (required)
  model       (optional)
  max_tokens  (optional)

`list_models`

List all available models and pricing.

Pricing

Model	Input	Output
Claude Sonnet 4	$3.60/1M tokens	$18.00/1M tokens
GPT-4 Turbo	$12.00/1M tokens	$36.00/1M tokens

Cached responses receive a 50% discount.

Typical request costs:

Short question/answer: ~$0.001–0.003
Code review (500 lines): ~$0.01–0.03
Long document analysis: ~$0.05–0.15

Use Cases

Personal AI assistant with micropayments

Pay only for what you use. No $20/month subscription burning while you sleep.

Autonomous AI agents

AI agents that pay for their own inference — no hardcoded API keys, no human in the loop.

// Agent pays autonomously on every request
const res = await fetch("https://solanaprox.com/v1/messages", {
  method: "POST",
  headers: {
    "Content-Type": "application/json",
    "X-Wallet-Address": process.env.SOLANA_WALLET,
  },
  body: JSON.stringify({
    model: "claude-sonnet-4-20250514",
    max_tokens: 1024,
    messages: [{ role: "user", content: prompt }],
  }),
});

Solana app integration

Let your app's users pay for AI features directly from their Phantom wallet. No backend payment processing required.

Environment Variables

Variable	Required	Description
`SOLANA_WALLET`	✅	Your Phantom wallet address
`SOLANAPROX_URL`	❌	Override API URL (default: https://solanaprox.com)

Standalone Agent Example

git clone https://github.com/solanaprox/mcp-server
cd mcp-server
npm install

# Run the research agent
SOLANA_WALLET=your_wallet node agent-example.js research "Solana DeFi trends 2026"

# Check balance
SOLANA_WALLET=your_wallet node agent-example.js balance

# Quick demo
SOLANA_WALLET=your_wallet node agent-example.js

Integration Examples

LangChain (Python)

Coming soon — or use the REST API directly.

Direct REST API

# Check balance
curl https://solanaprox.com/api/balance/YOUR_WALLET

# Make AI request
curl -X POST https://solanaprox.com/v1/messages \
  -H "Content-Type: application/json" \
  -H "X-Wallet-Address: YOUR_WALLET" \
  -d '{
    "model": "claude-sonnet-4-20250514",
    "max_tokens": 1024,
    "messages": [{"role": "user", "content": "Hello!"}]
  }'