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  "domain": "agent-economy",
  "title": "Stablecoin routing for AI agent transactions · which stablecoin actually settles agent payments",
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  "frontmatter": {
    "title": "Stablecoin routing for AI agent transactions · which stablecoin actually settles agent payments",
    "aliases": [
      "stablecoin routing agent transactions",
      "USDC vs USDT vs L2-native stablecoin agent settlement",
      "Circle CCTP agent stack",
      "paymaster gasless agent transactions",
      "agent multi-chain UX stablecoin",
      "cross-chain abstraction agent payments",
      "settlement finality agent transactions"
    ],
    "domain": "agent-economy",
    "type": null,
    "created": "2026-05-25",
    "last_updated": "2026-05-25",
    "last_tended": "2026-05-25",
    "review_by": "2026-11-25",
    "confidence": "likely",
    "tags": [
      "agent-economy",
      "stablecoin",
      "routing",
      "usdc",
      "usdt",
      "base-usdc",
      "op-stack",
      "arbitrum",
      "cctp",
      "paymaster",
      "erc-4337",
      "erc-7702",
      "gasless",
      "cross-chain",
      "settlement-finality"
    ],
    "status": "active",
    "canonical_anchor": null,
    "related": [],
    "note": null,
    "sources": [
      "https://www.x402.org/",
      "https://docs.cdp.coinbase.com/",
      "https://docs.privy.io/",
      "https://www.circle.com/en/cross-chain-transfer-protocol",
      "https://developers.circle.com/cctp",
      "https://eips.ethereum.org/EIPS/eip-4337",
      "https://eips.ethereum.org/EIPS/eip-7702",
      "https://eips.ethereum.org/EIPS/eip-7715",
      "https://docs.base.org/",
      "https://docs.arbitrum.io/",
      "https://docs.optimism.io/",
      "https://github.com/google-agentic-commerce/AP2",
      "https://www.federalreserve.gov/",
      "https://www.fsa.go.jp/en/",
      "https://www.fca.org.uk/"
    ]
  },
  "summary": "When an AI agent pays for an API call, a tool invocation, or a downstream agent service, the actual on-the-wire settlement asset in mid-2026 is USDC on Base for the dominant share, USDC on other L2s (Arbitrum, Optimism, Polygon PoS, Solana) for chain-specific use cases, USDT on Tron / Ethereum L1 fo",
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    "Stablecoin routing for AI agent transactions · which stablecoin actually settles agent payments",
    "TL;DR",
    "Wiki route",
    "Which stablecoin · 2026 mid-year settlement mix",
    "Settlement finality requirements",
    "Cross-chain abstraction · how multi-chain agent UX works",
    "Gasless agent transactions · paymaster mechanics",
    "Circle CCTP v2 · the cross-chain backbone",
    "x402 + USDC · the dominant agent-payment HTTP stack",
    "Issuer-aligned vertical stacks"
  ],
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