Call when an agent needs raw Base logs for one contract, with optional topic0-topic3, a capped block range, and an optional event signature for decoding. Public mainnet.base.org windows stay small and HTTP 429 is not billed. Read-only. Send JSON fields address (string), topic0 (string), event (string). Exact $0.005 USDC on Base. Try unpaid POST /v1/sandbox/base-events first.

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