{"openapi":"3.1.0","info":{"title":"Energy Intelligence API","version":"1.0.0","description":"Read Great Britain electricity carbon intensity, regional figures, generation mix, and forecasts from the Carbon Intensity API. Paid with x402 exact USDC on Base. No account is required.","contact":{"email":"support@brainiac.software"},"x-guidance":"BRAINIAC.software is a pay-per-call API for software agents. No account or API key is required.\nPayment uses the x402 protocol with exact USDC on Base (chain id 8453). Each POST operation has a fixed USD price.\nHow to call an operation:\n1. POST JSON matching the requestBody. Invalid input returns 400 with no payment challenge.\n2. A valid unpaid call returns 402 with the exact amount and payTo.\n3. Pay and retry with payment-signature. Payment settles only if the operation returns 2xx. A 4xx/5xx is not charged.\nInclude an Idempotency-Key header of 64 hex characters from 32 random bytes. 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