SYNTHORA Base Block Metrics

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        "resource": "https://base-block-metrics.hergertsynthora.com/service",
        "description": "Real-time Base chain metrics: latest block, base fee (gwei), gas used %, tx count. For gas-timing and execution agents. Free public RPC, deterministic. $0.002 USDC via x402 on Base. SYNTHORA. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.",
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              "result": {
                "number": 48443083,
                "gasUsed": 39233071,
                "baseFeePerGas": 5000000
              },
              "provenance": {
                "url": "https://mainnet.base.org",
                "source": "SYNTHORA Base Chain Metrics"
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