Get my first live price with Blocksize.

Claude

1. Add https://mcp.blocksize.info/anthropic/mcp/ as a custom connector.
2. Sign in with Blocksize.
3. Ask: Use Blocksize to get the latest BTC-USD VWAP and include the source timestamp.

The successful get_vwap call uses one included data credit and reports the remaining balance.

Cursor

{
  "mcpServers": {
    "blocksize-live": {
      "url": "https://mcp.blocksize.info/cursor/mcp/"
    }
  }
}

Complete OAuth, then ask: Use Blocksize get_vwap for BTC-USD and report the source timestamp.

ChatGPT

Add https://mcp.blocksize.info/mcp/server/ for discovery and endpoint construction. Preview the response shape without live data or payment:

curl -sS \
  'https://mcp.blocksize.info/v1/samples/market-data?service=vwap&symbol=BTCUSD'

The preview is synthetic and not for trading. Follow its attributed paid_endpoint, then inspect the standard x402 v2 challenge:

curl -i -sS \
  'https://mcp.blocksize.info/v1/vwap/btc-usd'

Use an official x402 client to sign an advertised requirement and retry with PAYMENT-SIGNATURE. Raw identity headers do not grant production credits; included credits use authenticated connector identities.