Multi-Source Fact Bundle

Try before payment

Inspect a representative partial result, exact price and copy-ready upgrade instructions. No wallet, signature or payment required.

Copy-ready MCP call

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "multi_source_fact_bundle",
    "arguments": {"source_urls":["https://api.coinbase.com/v2/prices/BTC-USD/spot","https://base.blockscout.com/api/v2/blocks"],"query":"BTC"}
  }
}

What the agent receives

Per-source evidence, agreement indicators, missing coverage and hashes.

No API key or subscription. The first paid request returns HTTP 402 payment requirements; an x402 client signs and retries automatically.