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The crosschain.agents schema provides analytics for the x402 micropayment protocol across all supported chains. x402 enables AI agents and developers to pay for API calls with USDC — no API key, no registration, just a wallet.

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Available Tables

TableDescription
x402_transfersIndividual x402 token transfer events across all chains
x402_metrics_dailyDaily aggregated metrics by chain and facilitator
x402_overviewLifetime and rolling window (7d/30d/90d) metrics
x402_serversServer registry — maps payment addresses to service origins, categories, and accepted tokens
x402_facilitatorsFacilitator registry across all chains

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Data Schema

crosschain.agents.x402_transfers
crosschain.agents.x402_servers
crosschain.agents.x402_metrics_daily
crosschain.agents.x402_overview
crosschain.agents.x402_facilitators

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Key Concepts

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Facilitators

Facilitators are entities that process x402 payments on behalf of users. Each facilitator has:
  • A unique identifier (e.g., coinbase, polygon)
  • One or more wallet addresses per chain
  • Supported tokens (typically USDC)
  • Access type (public, gated, or gated_paid)

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Transfer Context

In x402 transfers:
  • from_address - The buyer (paying for API access)
  • to_address - The seller (API provider receiving payment)
  • transaction_from_address - The facilitator processing the payment

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Sample Query

SELECT 
  chain,
  activity_date,
  SUM(total_volume_usd) AS total_volume_usd,
  SUM(transfer_count) AS total_transfers
FROM crosschain.agents.x402_metrics_daily
WHERE activity_date >= CURRENT_DATE - INTERVAL '7 days'
GROUP BY chain, activity_date
ORDER BY activity_date DESC;