AsterPay

EUR settlement and crypto data API for AI agents. Convert USDC to EUR via SEPA Instant. Access 16 pay-per-call endpoints for market data, AI tools, and crypto analytics.

AsterPay — EUR Settlement for AI Agents

What it does

Gives your OpenClaw agent access to AsterPay's API — 16 endpoints for crypto market data, AI tools, and EUR settlement estimates. All endpoints use the x402 pay-per-call protocol (USDC on Base). Several endpoints are free.

How to use

AsterPay runs as an MCP server. Add it to your OpenClaw configuration:

Option 1: Via mcporter (recommended)

Tell your OpenClaw agent:

Install the AsterPay MCP server: npx -y @anthropic-ai/mcp-remote@latest https://x402-api-production-ba87.up.railway.app/mcp

Option 2: Manual config in clawdbot.json

Add to your clawdbot.json:

{
  "mcpServers": {
    "asterpay": {
      "command": "npx",
      "args": ["-y", "@anthropic-ai/mcp-remote@latest", "https://x402-api-production-ba87.up.railway.app/mcp"]
    }
  }
}

Option 3: Local MCP server

npm install -g @asterpay/mcp-server

Then in clawdbot.json:

{
  "mcpServers": {
    "asterpay": {
      "command": "asterpay-mcp-server"
    }
  }
}

Available tools

Free (no payment required)

Tool	Description
discover_endpoints	List all available API endpoints with pricing
settlement_estimate	Get USDC → EUR conversion estimate with real-time rates
check_token_tiers	View $ASTERPAY token discount tiers (up to 60% off)
check_wallet_tier	Check your wallet's token balance and discount tier

Market Data (paid via x402)

Tool	Cost	Description
get_crypto_price	$0.001	Real-time price, market cap, 24h volume
get_ohlcv	$0.005	OHLCV candlestick data for charting
get_trending	$0.002	Currently trending tokens

AI Tools (paid via x402)

Tool	Cost	Description
ai_summarize	$0.01	Summarize any text
ai_sentiment	$0.01	Sentiment analysis (positive/negative/neutral)
ai_translate	$0.02	Translate text to any language
ai_code_review	$0.05	Code review with security analysis

Crypto Analytics (paid via x402)

Tool	Cost	Description
wallet_score	$0.05	Wallet reputation and risk score
token_analysis	$0.10	Token security audit (honeypots, rug pulls)
whale_alerts	$0.02	Large crypto movements

Utilities (paid via x402)

Tool	Cost	Description
generate_qr_code	$0.005	QR code generation
take_screenshot	$0.02	Webpage screenshots
generate_pdf	$0.03	HTML to PDF conversion

Example prompts

• "What's the current price of Ethereum?"
• "How much EUR would I get for 1000 USDC?"
• "Analyze the sentiment of this article about Bitcoin"
• "Check if this token contract is safe: 0x..."
• "Show me whale alerts on Base network"
• "What are the trending cryptocurrencies right now?"

How x402 payments work

Paid endpoints return a 402 Payment Required response with payment details. To pay:

1. Install x402 fetch: npm install @x402/fetch
2. Configure a wallet with USDC on Base network
3. The SDK handles payment automatically per API call

Free endpoints (settlement_estimate, discover_endpoints, token tiers) work without any wallet.

About AsterPay

AsterPay is the EUR settlement layer for AI agent commerce:

• USDC → EUR via SEPA Instant in under 10 seconds
• Listed in Coinbase x402 ecosystem — only EU EUR provider
• MiCA-compliant via licensed European partners
• ERC-8004 registered — Agent #16850 on Base
• Certified on Arc Index — on-chain NFT verification

Website: https://asterpay.io Docs: https://asterpay.io/docs API: https://x402-api-production-ba87.up.railway.app GitHub: https://github.com/timolein74/asterpay-api PyPI: pip install asterpay npm: @asterpay/mcp-server

Guardrails

• Never send more USDC than explicitly approved by the user
• Always show the settlement estimate before initiating any conversion
• Do not store or log wallet private keys
• Respect x402 payment confirmations — do not retry failed payments without user consent